GPU card update?

Author	Message
Jack Lightholder Send message Joined: 22 May 10 Posts: 17 Credit: 139,881,493 RAC: 0	Message 56245 - Posted: 20 Nov 2012, 17:40:13 UTC Hi all, I have been crunching with a GTX 260 for the past two years but think it is finally time to upgrade. I settled (pending community input) on a GTX 660ti. GTX 660 ti model: http://www.microcenter.com/product/397952/02G-P4-3660-KR_NVIDIA_GeForce_GTX_660_Ti_2048MB_GDDR5_PCIe_30_x16_Video_Card Will this card meet the requirements for crunching Milkyway@Home & is it by best option in the 200-300 price range? Thanks! ID: 56245 · Rating: 0 · rate: / Reply Quote

JHMarshall Send message Joined: 24 Jul 12 Posts: 40 Credit: 7,123,301,054 RAC: 0	Message 56248 - Posted: 20 Nov 2012, 21:29:34 UTC - in response to Message 56245. Hi all, I have been crunching with a GTX 260 for the past two years but think it is finally time to upgrade. I settled (pending community input) on a GTX 660ti. GTX 660 ti model: http://www.microcenter.com/product/397952/02G-P4-3660-KR_NVIDIA_GeForce_GTX_660_Ti_2048MB_GDDR5_PCIe_30_x16_Video_Card Will this card meet the requirements for crunching Milkyway@Home & is it by best option in the 200-300 price range? Thanks! Jack, The Nvidia cards don't have very good double precision throughput. They are fine single precision crunchers, but MW requires DP calculations. AMD cards are much superior for DP work. I would recommend an HD 7950 for the price range you quoted. Joe ID: 56248 · Rating: 0 · rate: / Reply Quote

Jack Lightholder Send message Joined: 22 May 10 Posts: 17 Credit: 139,881,493 RAC: 0	Message 56249 - Posted: 20 Nov 2012, 23:13:14 UTC - in response to Message 56248. Jack, The Nvidia cards don't have very good double precision throughput. They are fine single precision crunchers, but MW requires DP calculations. AMD cards are much superior for DP work. I would recommend an HD 7950 for the price range you quoted. Joe That's great information thanks. I cant imagine the speed differential I will see going from Nvidia to AMD and a ~1000 benchmark to a ~4000 benchmark. I am already running tasks around 16 mins. Those will be really short WU's. ID: 56249 · Rating: 0 · rate: / Reply Quote

JHMarshall Send message Joined: 24 Jul 12 Posts: 40 Credit: 7,123,301,054 RAC: 0	Message 56250 - Posted: 20 Nov 2012, 23:43:30 UTC - in response to Message 56249. An HD 7950 will run 1 WU in 1 min. They are around $299.99 with mail rebate from Microcenter. Haven't checked prices elsewhere. I run 3 of them spread across 2 systems. They also perform well SP on other projects that have OpenCL WUs such as Einstein. Joe ID: 56250 · Rating: 0 · rate: / Reply Quote

mikey Send message Joined: 8 May 09 Posts: 3319 Credit: 520,256,630 RAC: 20,807	Message 56256 - Posted: 21 Nov 2012, 12:23:17 UTC - in response to Message 56250. An HD 7950 will run 1 WU in 1 min. They are around $299.99 with mail rebate from Microcenter. Haven't checked prices elsewhere. I run 3 of them spread across 2 systems. They also perform well SP on other projects that have OpenCL WUs such as Einstein. Joe AND with an app_info file you can run 2 units at once, PROVIDING you have GOOD cooling!!! ID: 56256 · Rating: 0 · rate: / Reply Quote

Jack Lightholder Send message Joined: 22 May 10 Posts: 17 Credit: 139,881,493 RAC: 0	Message 56262 - Posted: 21 Nov 2012, 20:19:54 UTC - in response to Message 56256. AND with an app_info file you can run 2 units at once, PROVIDING you have GOOD cooling!!! Very interesting...how would I go about doing this? :) ID: 56262 · Rating: 0 · rate: / Reply Quote

swiftmallard Send message Joined: 18 Jul 09 Posts: 300 Credit: 303,562,776 RAC: 0	Message 56266 - Posted: 22 Nov 2012, 0:47:03 UTC - in response to Message 56262. AND with an app_info file you can run 2 units at once, PROVIDING you have GOOD cooling!!! Very interesting...how would I go about doing this? :) You would do this with an app_info file. When you get your new card, ask in this forum for someone to post one and for instructions how to install it. ID: 56266 · Rating: 0 · rate: / Reply Quote