2 x RTX2080 Ti Build - Open Loop Suggestions

DJAddiktz

DJAddiktz

DJAddiktz

Associate
Joined
8 Oct 2018
Posts
1
Location
Nottingham
Hey all

I've been spec'ing up a build for some time and now the RTX has finally been released, I'm finally going to take the plunge and build my first open loop rig... (some of you will probably think I'm crazy, attempting this for the first time with such a high spec build but I want the challenge as well as a monster setup for 4K).

Based on the components I have already settled on, I am aiming for an Asus Aura Sync RGB compatible build. Almost all the components/peripherals will be RGB however it is mainly the case/cooling setup I'm a little unsure of and need a bit of advice on.

THE BUILD
Case 1 - Phanteks Eclipse 350 X https://www.overclockers.co.uk/phan...gb-midi-tower-case-black-white-ca-07x-pt.html

Or

Case 2 - Thermaltake View 71 RGB Full Tower (https://www.overclockers.co.uk/ther...ming-case-black-tempered-glass-ca-195-tt.html)

I'm thinking case 2 will be the better option due to it being a bigger size which will better accomodate the rads and reservoir, however if anyone thinks it could all fit into an Eclipse 350 X, then please say as I would much prefer a smaller case.

SHOPPING LIST
Intel Asus Prime X-299 Deluxe (Socket 2066)
Intel Core i9-7920x 2.9GHZ (Skylake X, Socket 2066)
Gskill Trident Z RGB 32GB (4x8GB) DDR PC4-25600C14 3200MHZ Quad Channel Kit
Corsair Force MP500 Series 120GB NVME PCIE M.2 SSD (for the OS)
Samsung 860 Pro 512GB 2.5" SATA 6GBPS 3D V-NAND SSD (for applications)
Seagate Barracuda 2TB 7200RPM 64MB Cache HDD (for files)
Asus ROG Thor 850w

MY QUESTIONS
1) What is the best cpu/gpu block material to go with (for performance) out of the many options available... (I'm assuming copper because of its great thermal properties but if any of you think anything different, then I'm open to suggestions)
Copper/plexi, copper/acetal, nickel/acetal, nickel, nickel/plexi etc
2) What size pump/resorvoir is required for a dual GPU open loop with 2 x RTX's, as well as a dual GPU + CPU loop? (I imagine the latter will require larger rad mounts than what the Eclipse is able to provide)
3) Have any of you tried and/or recommend running the CPU off a separate closed loop AIO with 280mm rad, on top of a open loop with 2 x GPU's and a 360mm rad?

I may have some more questions once I have got some answers to the above but any help or advice will most certainly be appreciated!

Kind regards
Max
 
My first thought is that PSU is not going to cope with 2x 2080Tis It would probably handle one, but I just had to replace my Corsair HX850 to get one working with my watercooled 6900k build (went for a 1KW superflower). I would look at a 1200W superflower or maybe more..

As far as water blocks are concerned for the 2080Ti you need to know whether the 2080Tis are reference board design or custom (I don't personally know which are which except for the Founder's Editions which are defacto reference.).

Also I might be overly cautious haveing had an EK Predator leak in the past, but I personally don't trust acetyl covers not to crack and leak if subjected to vibration or sheering forces, and would go for a full metal block, but I know many who would disagree on that. You might also need to be careful mixing metals in your loop.
 
Last edited:
Yup agree with HazardQ get a bigger power supply. Once you overclock all that, would not be suprised to see you get close to 850watts+ under load.

Also Get rid of that 7820x, more so with the Intel 9900k on the horizon, already seeing z390 boards getting leaked. Make more sense to get that platform IMO, Ringbus + 8 cores + soldered die (if rumors are true) and high speeds should make it a monster really.

  • Does not massive loads. Just avoid mixing the copper / brass / nickle etc with Aluminium. In terms of temps those block's in those various finish's will not differ noticeably, go for whichever one looks nice or suits your build.
  • A D5 pump will be what your after. In terms of resivior, it does not matter. Its mostly to help with filling and acting as a location for air to drain from main loop and secondly aesthetics (or first for most).
  • I don't see the point in adding an AIO into the mix with a Open loop. Usually CPU will be cooler then the GPU's so may even help with GPU temps to share that 280mm rad the AIO would have and add it into the GPU loop.
Also (as someone who uses multiple GPU rigs) just hope your aware of scaling with Dual GPU's. If not, suggest you peek at some graphs. Sadly scaling is not always great and some games, even modern titles do not support SLI / multi-GPU period.
 
850w no chance. 1000w i’d say especially when both gpu’s and the cpu are overclocked.

I’d also agree with radox. Ditch the 7920x. I’ve owned one before. Requires delidding to overclock well and will pull 400w+ when overclocked heavily. Get a 9900k instead as it is soldered and massively cheaper.

With regards to custom loop.

Just do one big custom loop. Shouldn’t need any more than a single D5 pump and appropriately sized reservoir.

I’ve ran a cpu block, 2 gpu blocks, 2x 480mm radiators and a single 240mm and never had an issue with flow at a constant inaudible 1800rpm vs 4500ish full speed.

Cpu block go with whatever you think looks best as long as it isn’t aluminium.

In terms of case. I’d go with something better imo. Something larger with better watercooling support.

Lian li dynamic? Phanteks evolve X?

For the two cards and cpu. Especially overclocked. I’d recommend no less than 2x360 good quality reasonably thick radiators.
 
My comments:

1. Bigger PSU, 100% needed - suggest the bigger ASUS 1200w.

2. Case, Phanteks Evolve X - looks amazing quality is great and as above just better designed.

3. Blocks don’t matter much in material so match to style but stay away from aluminium as it’s not going to play with anything else well unless it’s all the EK Alu kit.
 
My input,

1) I'd definitely recommend a bigger PSU, 1200w minimum imo.
2) Case wise, the glass cases look great but hinder airflow quite a bit. I'd had good temps with
BeQuiet 900 Pro - large enough for a 360 + 420 rad - looks pretty - can open the front door for more airflow
Corsair 900D - Masssive cases, great airflow - not overly pretty
ThermalTake X71 - not the prettiest - very good to build in, cheap enough and great airflow
3) I'd put it all in one loop, Im an EK fan so D5 pump res combo, 1 x 360PE + 1 x 420CE plus fans for intake. Size of the res doesn't matter, the 100/140s are nice. smaller the res, the longer it takes to fill.
 
You must log in or register to reply here.
Back
Top Bottom