GPU Choice?

Questions and Answers : GPU applications : GPU Choice?
Message board moderation

To post messages, you must log in.

AuthorMessage
Profile Galacticminor

Send message
Joined: 28 Apr 02
Posts: 7
Credit: 9,526,884
RAC: 11
United Kingdom
Message 1788125 - Posted: 17 May 2016, 9:13:10 UTC

Good Morning,

Wanted to get some opinions...

I'm looking to upgrade my Dual Xeon server. Currently I have a pair of Nvidia GT640s in there which are doing a fairly good job. I'm looking to swap these out for faster cards, and given that the new Nvidia cards are on the horizon (GTX 1080/GTX 1070) I'm considering my options. Which would you choose out of:

Option1:
-Get a pair of Used Nvidia GTX 980s (not TI) - roughly 9.2 Terraflops

Option 2:
-Keep one of the Nvidia GT 640s and get one Nvidia 1070 - roughly 7 Terraflops


The slots on my motherboard are Dual PCI 2.0 (one 8x, one 4x) but for the purposes of workunits, I don't believe that the slot speed really matters too much considering all it does is copy the work unit to the GPU memory and work on it from there.

I have a 750W PSU which is up to the task of driving two GPUs - Ideally I don't want to spend more than £270 Max, so I'm kind of banking on the cost of the 980 falling when the new 1070/1080 comes out (Happy to buy used if they are still under warranty).

regards

Andrew
ID: 1788125 · Report as offensive
rob smith Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer moderator
Volunteer tester

Send message
Joined: 7 Mar 03
Posts: 20460
Credit: 416,307,556
RAC: 380
United Kingdom
Message 1788126 - Posted: 17 May 2016, 10:04:53 UTC

Mixing classes of GPU can lead to all sorts of strange effects - if you went to a GTX1070 and a GTX640 you could well run into driver problems as the 1070 is a Pascal and the 640 is a Maxwell...

From the released price information I doubt that a GTX1070 would fall into your budget, I would guess they will be nearer the £300 at launch. You'll probably have more luck getting a couple of GTX980s within your budget - a quick look suggests they currently just outside, but will almost certainly drop a bit as early adopters dump some.
Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?
ID: 1788126 · Report as offensive

Questions and Answers : GPU applications : GPU Choice?


 
©2022 University of California
 
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.