Multi GPU advice

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donny5150

Active member
Hi all,

Im looking to get a machine with as much GPU oomph as possible, while still being stable.
The purpose of the machine would be for 3D rendering (Octane and Redshift), so the GPU/s is the main importance for this build.

The budget is around £5K.
I was looking at the following spec:

3960X 24 core Threadripper
Whatever motherboard will work really
2 x 2080Ti
64GB or 128GB Ram
1TB M2 Hard Drive

My questions are:

- We've got a Titan XP lying around at work here and I was thinking of putting that into the system too if possible?
- How many GPUs can I squeeze into a box?

Im happy to take pointers and change anything up if anyone has any suggestions.

Thanks for any advice...

ps, SLI won't be required
 
Oussebon

Oussebon

Multiverse Poster
Depends on the size of the box and the motherboard PCIe slot placement I guess.

And the size of the graphics cards i.e. whether those 2080 tis are dual or triple slotters.

This is one where PCS's configurators aren't very helpful sadly.

If you try to spec up a threadripper system with 3 GPUs, it insists all 3 GPUs must be the same model, which of course for Octane rendering they do not. However, the 3rd and 4th GPU menus only include the Quadros and AMD workstation cards - not 2080 ti GPUs. And those are all dual slotters whereas the 2080 tis PCS use may be 2.5/3 slots. So the configurator is about as helpful as a chocolate teapot there.

There are 4 motherboards. The ASUS® PRIME TRX40-PRO and ASUS® ROG STRIX TRX40-E GAMING we can rule out because of the PCIe x16 slot placement - you won't be able to fit any 3 GPUs in if they are dual slot.

The Zenith and the Gigabyte have the same PCIe x16 slot layout (as far as I can tell), and either should fit the same GPUs.

I believe that even if the 2080 tis from PCS are 2.5/3 slotters, you should be able to have 2 of them and your Titan XP. e.g. 2080 ti in the top slot, your Titan XP in the 3rd slot and 2080 ti (2-3 slots) in the 4th (lowest) x16 slot. Something like that.

I'm not sure whether the top PCIe slot lines up with the 1st or the 2nd PCIe bracket in the PC case. I think it might line up with the 2nd bracket. However as long as the case has 8 PCIe brackets, that should still be fine.

I'd suggest the 750D and its 9 PCIe brackets (which if nothing else hopefully means a smidge of space under the bottom GPU). There's also the Fracal XL R2, but the only AIO water coolers on sale with the Threadripper CPUs are 360mm and the case doesn't support them... only 240, maybe 280 depending on the radiator...

The Cooler Master Wraith Ripper is okay
www.techspot.com

Third-Gen Threadripper Lands: AMD Threadripper 3970X & 3960X Review

The latest 32-core and 24-core high-end desktop CPUs from AMD have now landed. And yes, we've benchmarked the heck out of them. The Threadripper 3970X is a...
www.techspot.com www.techspot.com
but if you have 3 GPUs in there as well an AIO seems all but necessary.
 
Oussebon

Oussebon

Multiverse Poster
So this is what I ended up with

Case
CORSAIR OBSIDIAN SERIES™ 750D FULL TOWER CASE
Processor (CPU)
AMD Ryzen Threadripper 3960X 24 Core CPU (3.8GHz - 4.5GHz, 142MB CACHE)
Motherboard
Gigabyte TRX40 AORUS PRO WIFI: ATX, USB 3.2 - RGB Ready
Memory (RAM)
64GB Corsair VENGEANCE DDR4 3200MHz (4 x 16GB)
Graphics Card
11GB NVIDIA GEFORCE RTX 2080 Ti - HDMI, 3x DP GeForce - RTX VR Ready!
2nd Graphics Card
11GB NVIDIA GEFORCE RTX 2080 Ti - HDMI, 3x DP GeForce - RTX VR Ready!
1st Storage Drive
6TB SEAGATE BARRACUDA SATA-III 3.5" HDD, 6GB/s, 5400RPM, 256MB CACHE
1st M.2 SSD Drive
1TB SAMSUNG 970 EVO PLUS M.2, PCIe NVMe (up to 3500MB/R, 3300MB/W)

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Choose from 6 Incredible Ubisoft Titles FREE with select SAMSUNG SSDs!
DVD/BLU-RAY Drive
NOT REQUIRED
Power Supply
CORSAIR 1600W PRO SERIES™ TITANIUM AX1600i DIGITAL MODULAR PSU
Power Cable
1 x 1 Metre UK Power Cable (Kettle Lead)
Processor Cooling
CoolerMaster MasterLiquid ML360 RGB TR4 High Performance Liquid Cooler
Thermal Paste
STANDARD THERMAL PASTE FOR SUFFICIENT COOLING
Sound Card
ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD)
Wireless/Wired Networking
10/100/1000 GIGABIT LAN PORT (Wi-Fi NOT INCLUDED)
USB/Thunderbolt Options
MIN. 2 x USB 3.0 & 2 x USB 2.0 PORTS @ BACK PANEL + MIN. 2 FRONT PORTS
Operating System
Windows 10 Home 64 Bit - inc. Single Licence [KUK-00001]
Operating System Language
United Kingdom - English Language
Windows Recovery Media
Windows 10 Multi-Language Recovery Image - Unlimited Downloads from Online Account
Office Software
FREE 30 Day Trial of Microsoft® Office® 365 (Operating System Required)
Anti-Virus
BullGuard™ Internet Security - Free 90 Day License inc. Gamer Mode
Browser
Microsoft® Edge (Windows 10 Only)
Warranty
3 Year Platinum Warranty (3 Year Collect & Return, 3 Year Parts, 3 Year labour)
Delivery
STANDARD INSURED DELIVERY TO UK MAINLAND (MON-FRI)
Build Time
Standard Build - Approximately 7 to 9 working days
Price: £5,071.00 including VAT and Delivery

Unique URL to re-configure: https://www.pcspecialist.co.uk/saved-configurations/amd-trx40-pc/XNw6qWyxy0/
 
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