(4k) RTX 3090*4! It is a Luxury in Dreams
This computer first wanted to install air -cooled heat dissipation.
Later, because the original graphics card was too thick and could not be installed,
it was replaced as a split -type water cold.
Single water and cold hardware needed more than 20,000 bucks.
Water cooling was a full set of imported EK+BP
There are detailed water -cooled configuration forms in the video.
This computer is productive for productivity, deep learning,
not playing games
[Because it is deep learning, so the graphics card connection can be run by 4 graphics cards.
If it is playing games, the bridge is required.
However, the bridge of the 30 series graphics card is only dual card]
There are three requirements for this computer:
strong performance,
holding heat dissipation, high safety
[The appearance does not matter, because it is placed in the computer room]
All RGBs of this computer are synchronized with light,
and all lights can be controlled and closed with one click.
#pcbuild #rog #pc#gamingPC#rtx3090 “We emphasized the compliance of video content while also ensuring the safety of the filming process.”
Mom, this is for study
U guys getting pc for studies 😐
R U KIDDING ME?????? FOR STUDY??😐
😂😂😂👌yess
So I can do my homework faster
🤣
Aint seeing a gaming pc, this is a gaming server
Ai workstation basically any work related tasks
Definitely the only reason for this would be ai work Station a gaming server would need a server grade cpu to be able to support several different instances of virtual machines. However that is really the only difference between this set up and a true gaming server is the cpu used and of course motherboard. For a gaming server you would want a top of the line xeon or even better threadripper at minimum. The thing I don't get though is that it seems like it would be way more beneficial for ai workstations to use dedicated ai graphics cards. I'm wondering if this unit is maybe doing some ai stuff involving video and photos or graphics and hence the need for all the other none ai associated cores in the rtx 3090 gpus? Really wish this channel was in English and did some explaining cause you very rarely see builds like this even on youtube. I've only seen about four building like this using these newer rtx cards in nvlink situations and typically they're all saying they're doing so for ai workloads so it's most likely also the case here.
"Server" would be a little humble in this case.
No one man should have all that power 😂 clean build skilled builder
Its nice that you included a benchmark, I wish more custom build videos showed their scores at the end.
How do I find my score
Mostly they do. U just a gay
This man no need a girlfriend anymore.
🤣
yea he can spend time with his weeb ass figurines...
He can render one in real time
He can stick his in that silly ROG logo it’s everywhere
This is cheaper anyway
Probably the most bad-ass space heater I've ever seen!!! And probably one of the most expensive as well.
not to mention the electricity bill behind that space heater too.
12:21 50c at full load
@@BajaToxic It's still wattage being emitted into the room....you actually think the temperature itself is actually raising the temperature of the room? So if I took a grain of rice and heated it at 200C, my room will be 40C in no time? XD
@@InsuredFrames Most average PC run at 70c+ all the time and no one complain it warm the room.You forget there's aircond or fan running too.
@@BajaToxic Like InsuredFrames mentioned, it's the wattage emitted vs the temp at which the GPU is running..Emitting 1000watts of heat over 500watts is double the heat being dumped into the room. The actual temp matters but significantly less.
I love how you pause the video at certain points of attention, enjoyable to watch
I can say this with confidence, this is probably a dream build of mine. Amazing video!
It's useless and waste of money until & unless you got some nefarious plans ahead
se ci lavori si ma per giocare soldi buttati
Great! Now make a build with 4x 4090’s
No SLI support though
@@svartdraken will the feature eventually come or it will just never happan?
@@giannoklein2046 no they just abandoned it. I guess it makes sense but having the option would’ve been nice
@@svartdraken SLI Support what? NVLink is not needed anymore. Come out of your cave. PCIe5 gets better than NVLink speeds so they removed it.
@@svartdraken As I saw in this video the guy also skipped SLI bridges i think :)
Omg what a nice setup brings back memories from 2009/10. Good to see setups like this in 2022.
haha, first thing I thought of was maxishine's tri sli evga hydro copper 580 build.
@@lachlanhamersley5394 i was think og the 9800 gtx or the duel 9800 cards
yeah i haven't seen a multi gpu build in years. last time i seen one was 2016-2017
@@wisdomfox857 sli 295s which were duel 280s. I miss those days, the card art and even some cool motherboard designs like the Gigabyte Assassin board.
@@UR5TEPDAD1 yap but now we have gpu thicker and taller then a ps5
I work at a uni research lab, and we do ML stuff. Our 2 3090 setup lasted us for a while until training one the models appeared to have an estimated duration of 15 days lol. We're gonna ask the prof for 3-4 more gpus
it is beautiful A technical point, when you install four graphics cards, it means that the performance of the cards in the graphics software is important The pcie motherboard is version 3 and the cards are version 4. You can see in the V-Ray benchmark how much higher efficiency the pcie 4 cards have on the pcie 4 motherboards. By spending the same amount, you could buy 3rd or 5th generation Amd Threadripper which have pcie4
Beautiful. I haven’t seen such precise work. Great job.
That was the cleanest build ever. Kudos to you dude. This video is an absolute treat!
Nb
Que PC gamer incrível, um PC gamer desse é meu sonho de consumo.
Não é pc gamer....
Você não ia usar nem 5%😅
@@STRIKERZADA então é o que??
leia a descrição....@@DouglasRDJ
New sub. This was so aesthetically pleasing to watch. And I love the vibes.
Outstanding ! I wish one day to be able to do my own similar custom build :)
I9+4090 water-cooled computer installation process kzhead.info/sun/jcuCZ62giJ94fYE/bejne.html
Йййййййййййййййййййййййййййййййййййййййй1ййййй11й
I mean, if you want to flex with that computer build and those 4x 3090s, don't use ugly Noctua fans. It ruins the aesthetic.
Фу-фу-фу - какой же дерьмовый шуруповерт Вы использовали! Смотреть противно, не то что держать в руках... )
Why is the hot heat from the radiator blowing into the case? Aren't the fans supposed to blow outside of the case normally?
Could've bought an industrial data processing GPU from NVIDIA but I see that you are cheap. NASA called. They scoffed at your puny processors.
Was this built for Weta Digital to work on Avatar 2?!?!? What a beast of a machine!!! I can only imagine the render speeds of this bad boy
Wow incredible build 🤩
O processo de montagem é simplesmente fantástico de assistir.
Sim
44 C under load, that's impressive!!! Well done!!
This is the craziest build I've ever seen!!
it looks sooo awesome, really loving it! But sad to see that it's not really increasing any speed. Even my single 6950XT makes better scores in Timespy. Probably also because of the 5800X3D. But hey such a fancy build
he probably has 4* 4090 by now
A 5800X3D would be bad for this build. The build needs more PCIe lanes than a normal gaming CPU. That score would be low on a single 6950XT as well. Its that bendmark was multi gpu the score would be much higher. I don't believe the build is for gaming, not saying he cant with that hardware. The 3090 has more VRAM than the RX 6950XT and thats what is needed as well. Rendering and AI workloads. This build would be cheaper. CPU might not matter too much.
@@GodKitty677 Yeah about PCIe-Lanes and the things with doing creative stuff besides gaming, you are totally right. This thing surely is not made for gaming alone, would be stupid.
Thats really crazy , but absolutly awesome :-)
awesome build man!!!!!
You know, this much system is just overkill for me (Im happy with my 7950x/4090) but I would ABSOLUTELY LOVE to build it. Not to own, just for the experience of building such a beauty/
This will have like almost no effect effect boost for gaming, BUT for work..this is a PERFECT workstation, ai, projects, etc!!
With That PC Now I Can Finally Render My Scene 🤗🔥
Você tem redundância de fontes ou uma é apenas para as placas de vídeo?
The next task is to build yourself a small arc reactor to power that thing. Great build, my man, but I think we're all going to need a crysis benchmark to see what it's made of.
Simply WOW!!!
Obra de ARTE, dos tempos modernos ❤️
Essa configuração é totalmente overkill para mim, nenhuma das minhas atividades no PC faria essa máquina usar mais de 10% do seu potencial mas eu ainda gostaria de ter um PC assim por um dia, apenas pela experiência, esses SSD's combinados com 256GB de RAM devem ser insanos, o PC deve voar baixo, isso que eu nem contei o i9 com as RTX's, um sonho.
Mano, eu nem sabia q um pc podia ter mais de uma fonte pra tu ter ideia kkkkkkk
Uma configuração tão parruda pra perder pra um PC com apenas 1 placa de video 🤣🤣🤣🤣
@@NaskPaje em jogos "perde" sim, mas apenas porque os jogos não dão suporte a esse tipo de configuração, mas para renderização ou alguma atividade que use bastante GPU, não tem nem comparação.
please correct me if I'm wrong but isn't SLI support for 30 and 40 series cards practically dismal? wouldn't, say, 4 1080's or 4 2060's actually produce better results?
Would be nice to have more high speed pcie lanes. I think a thread ripper build would have been better suited. And how are the gpus cooled? In line? If that’s the case the last one will probably boil the water 😂🔥🔥🔥… edit. Now I see the top two and bottom two are synched. That should work out well. 3 radiators for the set..and now I see the cpu is a 10980… I guess all my points were so damn obvious to build around… duh. The mobo with 8 ram slots and 7 pcie slots should have given it away. A beautiful setup! The last of the nvlink!!
PC DOS SONHOS! ❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤
concordo
Pra mim que sou pobre só a 3090 já era o sonho mesmo 😂😂😂
@@pedrohaa2012 Sim eu tambem estou pobre e esse pc do video é exagerado, pois 1 rtx 3090 já é suficiente!
Like the enterprise drive. Hard to fill those. Gotta have that ssd for fast gaming as platter access would be a bottleneck.
Maybe I'm mistaken; but having don't you need an SLI bridge for multi-gpu builds like this
bro called me poor in 180 different ways😭😭☠☠
At least you are not the only one bro 😭😭😭 wtf for me it's not a pc it's a whole server
Im just happy to buy my new 3060 tomorrow
cant wait to see this pc performance in 5 years
uch, the way he bends the MB when installing DDR. Nice setup.
Honestly how I feel owning a shit ton of parts of no reason. I do have to buy another board to support multiple gpus with the full bandwidth. However, for now I just use another motherboard or the pcie gen 1x 4.0 for computation. it sure feels satisfying being able to generate 3kw of computation though it still pales in comparison to the finely made super computers. But, with this addiction. With great power, comes great computation.
Now I'm waiting for 4090*4 :)
I wish there would be sli/nvlink support
@@x32i77 I don't, sli will make some rich and stupid customers confused and will take away some of that quadro shine away lol
You're badshit insane!
@@x32i77 pcie gen5 is capable of being equivalent to nvlink, said nvidia
@@user-wr5we2xg6h doesn't change the fact that we will never see sli again
красота, о таком ПК остаётся только мечтать)).
Ты охуеешь когда придёт время платить электричку (если тебе для игрулек только) Если для работы, то поебать (но проводка и розетка нужна хорошая ))))
Почему мечтать если уже процы на али дешевеют i9-7900x стоит 150$ 10 ядер 20 потоков на 2066 как на видео. Осталось только мат. плат дождаться Китай и всё 2011-3 сокет не нужен станет)) Оперативка также дешевеет DDR4 так что год два и он доступный станет как в своё время 2011 сокет.
@@alexs9607 Только зачем? Если есть i5 12400f с меньшим нагревом и примерно той же производительностью )))
Does it make a difference that you split up the loop between the GPUS or is it purely aesthetics?
Can't cool efficiently I'm guessing with 4 cards together
Now you can make model of cucumbers live aerodynamics at 60mph
Весь бюджет магазина "ДНС" в одном ролике, но это действительно очень круто
Да ладно, тыщ за 500 уложиться можно, если не ещё дешевле
Интересно сколько в кс фпс будет
@@geoph 50
ДНс один из самых богатых дядек в России Он себе может 100 таких позволить и даже не почувствует чееееееееееееееееллллллллллллллллл
I built an almost identical build when x299 first came out /w four ekwb cooled 1080 strix oc cards five (?) years ago. The Corsair case was the size of a small refrigerator, which allowed two separate water loops /w EK-CoolStream CE 560's. Saw it on a YT build video months before and found one in that was returned. Ended up spending a month building the thing, it was a pain since the two loops even /w connectors made the hard line cuts/bends a pain. Ended up with an Asus Rampage VI Extreme gen 1 that I eventually found out had a manufacturing defect that would cause lockups. Why did you choose the x.299 chipset? With the AI/ML GPU offloading won't it be CPU constrained with the GPU loads? Not familiar with the bar-metal requirements since we generally use cloud based AMI on AWS for our processing. Nice build though, nice to see people still spending the time doing it themselves. :)
Why were you building a rig with multiple 1080s? Like what was the use case I'm just wondering? From what I know most people doing this with rtx cards and aren't using server spec cpus are doing this for ai workloads. If using a server cpu there's a possibly of making a cloud gaming server also. But multiple 1080s is a weird set up since there's no ai rt cores so you wouldn't be using it for ai workloads I wouldn't think, we're you doing some super intensive video production or animation workloads? I'm just wondering because I'm still in the learning phase when it comes to the different use cases of gpus. I personally have a machine still running a 1080ti myself and it's been for a long time one of my favorite gaming set ups up until the 40series came out there was literally no reason for me to upgrade since the 1080ti still outpaced a rtx 3060 but now with the 40 series the cheapest 40 series would beat my 1080 ti so I finally had a reason to go for a upgrade. Going to get a 4080 pretty soon or possibly a 4070 super not entirely sure yet as I like to buy used and get good deals. Got my i7 8700k and 1080ti pc fully set up and working for $300 back in the day when it was likly worth over 1500 since then I told myself I'll never buy new again. First pc I bought where I felt I didn't get taken advantage of for once.
@@SpreadingKnowledgeVlogs I was watching a youtube video, maybe on jayz2cents where he built that massive Corsair case I called " the refrigerator." While walking in Fry's here in Houston, I saw the exact same case someone from California returned, and bought it. It took a year to finish since I was building it for vm's, crypto, gaming, etc. With the diminishing returns of SLI that's the only real use case. I ultimately replaced all four 1080ti oc founders with two 2080's. I ended up tearing it down since it seemed like a good idea at the time, but it was larger than a small refrigerator. It wouldn't fit under my desk and if I put it on my , it was a frig, lol. Now, I have an msi meg z790 ace now with 192gb of ram, a 4090ti oc, and a i9-14900k. Loving pci 5 and the Crucial pci 5 2tb nvme drives that scream! :) Good luck in your journey, remember it's a marathon and not a race. I've been building computers in some form or fashion since 1980 when I was nine.
@kvizena those crucial pcie gen 5 drives are insane!!!! The heat sinks on those things is daunting. I run crucial and samsung drives in my pc as well. I'm actually running nvme expansion cards in my pcie x4 and x8 slots. I have so many drives hooked up to my current pc it's kinda crazy. I unfortunately have a older set up so pcie gen 3 but still that works well for my needs. I want to eventually set all my drives into a raid 0 set up and see what kind of speeds I can get. I have several sata drives as well. Pc games take up so much damn hd space and I can't stand anything slower then Sata 3 speeds when having to transfer data around. Thankfully the only drive I have slower then sata 3 is my main back up drive for everything that runs off usb 3.2 which is slow but that's OK since it's not really running anything besides backing up stuff in the background.
Can you tell me the brand and model of the computer case? I need a computer urgently.
If you're going over the top anyways, why not get something like a Samsung 990 PRO M.2 ssd?
I can only imagine the cpu bottleneck in this situation
thats what in saying
if the CPU has the lanes it wont bottle neck. nothing but a bench mark will use all 4 once you do real world things your just wasting money using almost nothing.
@@channelofstuff6662 yeah, there are people that are not only gaming.
It’ll be fine! that core is xtreme series it’s a little old but pretty good, It has 18 cores with 36Threads. Im pretty sure there are newer and better cpu’s out there like the i9-13900k, which has 20 cores with 32T but runs in a faster frequency.
@@channelofstuff6662 you could use all 4 in touchdesigner or Magic Music Visualizer. They both let you keep assets in the vram for immediate access. This pc could probably run the Deadmau5 cube V3 show.
Folding at home running on this machine would be crazy :D
Deepfakes as well as blender animations.
deepmind probably killed folding at home. at least not one will be folding proteins.
The sharpness of the knife was the coolest part of the vid tbh
O cara simplesmente fez a máquina do tempo
Crazy PC! Very nice!
Man imagine how badass it would be to play Bejeweled on this, or Doom II. 🤩🤩🤩🤩
Or minecraft! 🤩
@@MintCubaN why would he need all these parts for that
I know it's too late. But please tell me the name of the knife as in the video. I liked it for the collection
Does this have any improvement in performance compared to a single 3090? If i am not mistaken, I heard that simply stacking two GPUs will not help gaming performance but may help in rendering. Just curious since I don't really know what setup I should go for since I am planning on building a new PC again.
dual gpu griefs game feel since every other frame is made by each gpu. helps perf somewhat but harms the input delay by making it very inconsistent
copper plate on the backside or memory chips. would really cool them right down. 10% to 20% gains too
People think one 3090 is overkill but look at this guy no words😢😢
It's not an overkill for his use case, I would say 2-4 high end consumer GPUs is the budget option.
@@TheGargalon Incorrect. A Tesla V100 has 3 times the floating point calculations and more Vram. This is an epic mispend. By the time you add the watercooling loop, electricity and PSU costs, 2 x teslas would be double the performance and more efficient.
@@BenState Which floating point exactly? The guy wrote that his use case is AI, and assuming he means generative AI training and inference, we are only looking at single precision performance, and the 3090 is twice as powerful and MUCH cheaper (if you can even find V100s now). You would get a V100 only if you need double precision, which is almost never used in AI. So "incorrect" back @ you.
@@TheGargalon Lol, you have no idea, stop reading redit. plenty of V100s available, and the 3090 is not twice as powerful. Lol.
@@BenState Go check the numbers for FP16, FP32 and FP64 processing power for both cards, read my previous message slowly, then come back to have an argument. So far there is no point arguing with you.
Хороший такой обогреватель на 3,2 кВт👍 Бублик крутится-калории мутятся 🤣
Ну это при максимальной нагрузке, а в простое он 100 ватт берёт не больше, в игре 1 киловатт, его загрузить мог только майнинг который умер
Мне видеокарта бабу заменила
i would like to know how many cost every component... you should do a video on it also... it is for have a idea.
Oh yeah… I once built a system with 4x RTX4090 too. It was so fast that Windows click the Start button first before I reach for the mouse.
Ahahha that's good one
🤣🤣🤣🤣
You’re electric bill and psu must be insane
@@stanleybochenek1862 derp
What gpu water coolers did u go with. I need 2
A monster for AI home lab. Congrats! 👏👏👏👏👏👏👏👏
How did you set your PSU? Do you have any issues with gpu recognition when starting PC up?
just use another, and hope to remember to manually turn it off and on.
Beautiful rig for 3D render. Why not a Xeon? I don't think the i9 supports all the necessary full bandwith pci channels. I hope to see from you a new rig with 2 RTX 6000 Ada.
good server chips are very expensive, much more expensive than HEDT ones.. Data centers can pay those prices, but if you're just a guy with a workload that needs that type of rig, you're better off with smth like current gen threadripper pro, those beasts have 128 4.0 lanes, you can have something crazy like 4x data center grade 32x gpus running full bandwidth..
@@vinylSummer You need such a throughput only if your tasks require extensive RAM GPU RAM exchange. AI or Rendering worlds do not require such a bandwith. It is ok to wait until a scene description or AI model initial values are uploaded to every GPU and then the math started producing minimal data to put back to RAM. PCIE-E x4 or x8 is ok for this.
There are no xeon compatible motherboards with 4 PCI-E x16 slots (I mean slot dimensions, not the PCI-E lines). There is a number of motherborads with a lot of x1-x4 slots, but for such a rig you will get the problem placing all GPUs in a case and water cool them at the same time.
WHY have all those 3090s without sli what are you gonna do run multi games and renders on each card or is this for virtual machine?
he is using it for deep learning, it is written in the description
What a crazy build
This system could theoretically run cyberpunk at native 8k @ 32 fps with psycho raytraicing if Nvidia would support 4 way nvlink and if CD project red would optimise the vram usage to 24 gb
@Xicore Money must not be an Issue eh?
@@xUltraShadow yeah theoretically 2x 4090 so 4k 144 should not be a problem
Weird choice of course but an awesome build
currently jelk maxing to this, also i heard its a hidden rule to place the ram in every other slot until filled if not it leads to damage or am i the only one?
I now have an rtx 4080 in connection with a 5950x CPU, basically that's enough for me!! but it's still nice to look at
Love ❤️ your setup. So how does it work with the four 3090? Is it only for 3d working and render or does it even work with gaming?
You can't use multiple cards in games
Wish you showed some gaming benchmarks, very cool
XDD
that pc is not for gaming, because 99% of games can run only in 1 gpu
@@bvironnn yes, very few game can run on SLI
games will use 1 gpu and the rest will afk
@@bolsterwow hahahaha useles afk gpu
Finally you can play in Cyberpunk on ultra settings with ray tracing with comfortable 60 fps
Respect bro 👍
Don't worry all starts with this PC, you will get a better one :)
xD
Yeah, a newbie build for sure
Thats like having rtx 4090 but without size problems
Melting problems
Бюджетная сборка за 30к🤩
Тут в этот бюджет влез только Б.П .
where are the NV-links ? what advantages are there with 4 cards ?
I have the exact same question
Such power. The gpu's at max draw likely eat around 1300w. Incredible work bro.
Just that? I thought would be like 2500w
Dude has 2 1600 psu installed
Thanks for contributing to the extremely high GPU prices! Other than that, cool build!
high??they are half the price of a year ago...
i9 10th XE has only 48pcie lanes so gpus are working only @x8 I guess, only half speed data transfer between ram and cpu, I would have used threadriper as it has 128 pcie lanes it will be enough for 4 gpus x16*4 wuold be 64 and still 64 left for many nvme disks etc.
Really nice build but I guess I'm missing something. I'm confused about why there's 4 really expensive GPUs with only ONE average display and I guess I'm a bit more confused that no one else has mentioned that.
Im uncertain how having the fans push hot air in the case is going.
Nice build, what is best 4090 to buy to watercool with an ek block?
No simply get the MSI suprim liquid x cooled aio card
don't buy a 4090 to begin with lol...wait 6 months and it'll drop by $400-500 cause nobody is buying them
@@funtourhawk pre orders are already sold out, i dont think you know what ur talking about. All you guys say the same thing about every generation.
Rog strix
@@funtourhawk1 year later and the 4090 is $1000
its the best rig for playing solitaire. thumbs up
Это отлично, но насколько я знаю объединённый режим работы ещё с 3060 убрали. Тогда смысл в данных видеокартах? На 4 монитора?
Finally a PC with the power of a single 4090
all others 3 are mining))))
and a third of a Tesla V100
I would be very interested in RTX 4090 vs 4x RTX 3090 performance comparison please.
watch gamers nexus's video about it
@@ballsconsumer77 RTX4090 wins... several games not a hav good optimization for a mult gpus
@@germano3571 oh didnt notice he said 4x 3090, yeah barely any games support SLI let alone optimized for it
esteticamente hermoso pero de que sirven 4 graficas si solo se usara 1? hay algo en lo que se puedan aprovechar?
Nada es solo showoff
would any games or programs actually support of utilize all of them
Now that space can fit a whopping ONE 4090!!
Two Suggestions. 1. After one item displaying, fast forward to the same items you are showing, 2. This beast must have been tested on some games.
MUST NOT be tested in games. Just two sticks of 16 GB of RAM and a RTX 3090 will last him for a very long time, so tests should take place in benchmarks or very demanding ones for rendering programs
Just incredible build my friend! If I ever become a rich man, you will be who I call to build my dream system. Just amazing video on so many different levels! Bravo! Great CONTENT!!!!
even the knife looks aesthetic! o.O
I really don't understand the cpu choice...why the old 10980xe?? There are a lot of better choices out there now for workstation use
Because of 48 Pcie lanes
@@x32i77 Threadripper (non pro) has 64 PCIe 4.0 lanes, that is virtually 128 lanes of PCIe 3.0 (10th gen is stuck at 3.0). Ryzen 7000 has 28 PCIe 5, which even if we consider them as 4.0 (because GPUs are still all on 4.0) is enough for full bandwidth to 4 3090.
@@flashxcate hmm 🧐 you are right
@@flashxcate Threadripper costs quite a bit more so that might be the reason.
@@MistyKathrine Read my comment above. Also a 16core threadripper cost less than 600$ and is vastly superior and offers an upgrade path.
that's an insane workstation, you gotta be processing some insane shit or compensating for something insanely small to get it.
Watch yt videos
@@SiuuuuTaNoodle in 1080p x 720
It's made for deep learning
@@TheGargalon If it was he'd use Tesla V100s or similar. This guy doesn't have a clue.