Hmm, That probably will need 27pcs of RTX3080 on the rig which is not that bad for the space it will take compare to low tier GPUs, Only problem is cost.

Have you ever thought of transferring all that heat produced by these GPUs if we were to custom waterlooped them to warm up the water for the entire house. Who needs water heater right

hi bro, u got download the GPUZ to check your 3090 memory temperature? i owned a R12 3080 and without opening it out to add thermal paste is impossible to mining it at temperature below 110 for the memory alone. The case design and the fan design make the card heat up so fast.... mining eth for 15min will have your card over 110 and have the card automatic throttle. Only after adding thermal paste to the DDR Ram directly only able to bring it below 100.

As for 3090 i owned a Zotac 3090, the heat for the card mainly comes from the back DDR rom as it does not have cooling fan on it, even with added and upgraded thermal pad plus thermal paste the thing can run up till 106 degree, only solution is either u got waterblock cooling or u add fans to the back of the 3090. That alone will bring the temperature down till 90 something.

So as now you combine r12 with 3090 (dell oem card really have bad cooling design) it will be very hot and i can imagine it will be pretty difficult to bring down the temp of the back.

Where you put the 3090?

I saw this guy placed two 3090s in his R12 but the hashrate like RTX3080 only, mayb stock one before OC?


RTX3090 price/hashrate or even power/hashrate ratio is not that efficient compare to 3080 right?


By looking at the MOBO, R12 has potential to be connected to a lot of GPUs



Dell already somehow "bifurcated" its Gen4.0 16X PCIE slots to 8X and 8X by making two physical (or mechanical) 16X slots which most Z490 or even Z590 mobo from other brands cant match. So to do NVlink / Sli/ CrossfireX is much more simpler without spending more money on that expensive Bifucate adapter which still we are not sure whether is gen4 or just gen3.

The mobo also has two PCIE 4X slots which theoritically can add 4 more GPUs to each slot with external risers -usb-4x PCIE connector. That already 8 GPUs which is not included the aforementioned two 16x PCIEs. Compare to other brand Mobo, most has extra PCIE X1 size but only imited to one GPU. Gigabyte or Asrock mATAX mobo never specify that they support bifurcation only Asrok mITX specifically mentioned supporting Bifurcation but then it will separate its 16X PCIE mechanical lane and 16X Electrical to 8x and 8x and you have to buy that expensive adapter.

I think R12 is a good buy, once the heat issue solved with waterlooped then it's one hell of a gaming/ mining/workstation all in one rig.

my R12 is for home gaming working and just the spare time do mining only. My RTX 3090 is install on another rig.

And the Dell 3090 is a really poor design one, fitting 2 into that casing alone is just pure waste of time. It may only make the gpu hotter and throttle more.... u will be lucky if it could even perform like a single 3080 in the end.

For efficient sake.... nothing beats RTX 3060ti that is if u could still find some out there that is available and no LHR.

it will be a complicated design with fins built into your heater tank and high chances of leak and very difficult for maintenance. if algae happens you are in trouble. it can be done but remember thermal equilibrium, i dont like the idea of water cool cards running at 55C and above. we design water to be 120C so whenever you switch on the tap can always enjoy 38C good warm temperature for bath tub or pure enjoyment. sometimes higher temp for the water vapor effect.

you need one pipe design for in and out for connection to your water heater tank, preferably use thicker copper than usual. secondly from your wall to your gpu racks can use quick release. depending on volume and height difference you might need a booster pump that can handle coolant and not leak. and hopefully your heat sink in the tank will not corrode or covered with any other dirt that comes with incoming water.

last but not least the temperature once reach 50C in your water heater tank your gpu will be running at 60C or more, i havent put into equations to calculate but roughly there. dont forget your walls will be warm all the time also.

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R12 mobo is not greatly exceptional as any x570 can do same or better especially mid to high end boards.
Cross fire doesnt need any adapter for all boards, nvlink is require if only you wanted to run 3090+3090 in a very stable manner for example AI, rendering etc. dual sli can be done w/o nvlink but performance isnt great.

and the amount of gpu is limited by your cpu on windows os, linux is the way to go if you want to build more than 8 gpu. intel processors can handle less bus lanes compared to ryzen, even your mobo has a lot of lanes, there is only so little you can use them in a stable manner.

3090 is space efficient compared to price and performance ratio. depends on your current size and priority. my 3090 running at 40 to 45% efficiency compared to 3080 50%, 3070 50 to 56%, 3060ti 49 to 55%.

if you do not plant to run rtx 30 series on pcie 1x is doable, else your system will be unstable on windows os.

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if you have space, fill up the gap and make your pcb and backplate contact while adding small fins usually for robotics on your back plate, it works. of course make better ventilation of the case or just run the pc wil all panels open, bare case would be another option.

Will it affect the hashrate if the PCIE slot is running gen 3 or 4? I mean if i were to google hashrate for certain GPU, i will find various number some high and some low, even when they're sharing the same settings. of coz they didnt mention their rig specs. One thing for sure if i were to use eGPU via thunderbolt, the hashrate definitely lower than direct PCIE connection on a PC even with the similar recommended OC, PL, MC, CC, with those who got it high hashrate.

No, it wont. nor matter what gen, your card will run at its hash rate with specific oc settings. GPU can be plugged onto pci-e risers and run at 1x. The hash rate depends on your overclocked settings, voltage, etc. Most motherboards with 5 to 6 slots pci e with extra 1/2 nvme. U can get 6 to 8 GPUS working with these motherboards. Change it to pci e gen 1 / 2 if u are building a dedicated, mining rig. Run your monitor using iGPU, running it on your discrete graphics card will reduce the hash rate as u put on load on the GPU.

This post has been edited by wongtheboy92: Jul 9 2021, 05:56 PM

gen 3/4 doesnt matter. i run them on gen 2 and enabled mining on bios for msi boards.

is mining via egpu viable ? i never tried egpu thunder bolt before frankly speaking.

like what wong said, check your OC settings again for best hash rates.
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Prices of gpu might rise back after august. its not crippling as people thought its happening in china.
lhr cards are good with alts and cheap for now, can consider to build alt specific with good ROI with LHR now.
Once london fork is rolled out, market will adjust itself for eth mining. cards will be expensive again.

This post has been edited by jett138: Jul 10 2021, 11:53 PM

Did you guys changing thermal pads on the GPU?
Im facing difficulties of selecting thermal pads thickness for Dell RTX3090
Anyone aware the thickness that i've to buy?

My kandang vs other people ladang. So sad.


1. Low hashrate via eGPU tb3
2. Unstable you see red notice and reboot.
3. Lolminer 3060 imporvement no longer working, changed to Gminer.

i don't think card will be expensive again, if u buy on august, u have less than 6 months to get back your ROI as ETH will go to POS. then there will be no mining for ETH anymore

get 3070ti, mine raven coin. about 3.9 usd/ day = better ROI than eth. conflux can reach about 4 usd at times. now about 2.8 usd/day. OC depending on you. 3080ti can get real low also.
Eth already no longer the most profitable algo for some cards. 3070ti can get for 3.4 / 3.5k / pcs more can get about 3.3 to 3.1 range. distributors have alot of stock on hand, give them a call and nego for an offer.

i find LHR cards are such a bargain to mine alts, after august shall monitor how the market might react after eip1559 where eth will lose another 30% on your mining profits makes it to about 2.xx usd/day
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gpu are not asics, if you are getting the ethash asics then yes, you only have about 6 months for POS. then later change to etc.

cards will maintain above msrp, might not be as crazy as before. still price will dip a little and rise back for various scenario of supply and demand

Which distributor?

any recommended pool for raven coin farming?

all of them, you are aware its the same bunch of people right.
as long as you are buying b2b not b2c.

am on 2miner, will try others once a few more rigs are online and monitor for a month.

do u guys mine and keep or sell once withdraw from pool?

every week sell partially for upkeep and ROI, convert to other defi about 30% gaining daily 2 to 0.2% daily is actually not too bad as long as the token / pair doesnt tank more than your interest.

some times purposely sell to short the market and buy back.
set your own strategy, make exit plan if you strictly mine eth only.

Asus, Gigabyte, MSI never state LHR on their boxes. So good luck guys

i think by this moment, not much people will specifically build for eth alrd. not knowing what will happen after eip1559 and remaining time till pos.

raven network has more hashrate growth

I took out the stock 3080 coz too hot to mine inside the shell even with the panel open. Replace it with the nerfed 3060 and set the max setting to hit 50Mhs.



Result : Unstable, miner restart, cclk -502 mem 1500 (Sweet sports for r15 for 3060 is -502/1400 49Mhs-ish

Waiting for thermal pad to apply to 3080, PCdepot is not selling, even the paste (Thermal Grease) is RM25