9800GT v2
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9800GT v2
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Send message Joined: 24 Dec 08 Posts: 738 Credit: 200,909,904 RAC: 0 Level  Scientific publications       |
I got myself another Palit 9800GT card today. Interesting that it looks totally different to the card I got about 3 months ago (also a Palit 9800GT). I was told that its a 2nd generation one. It has a somewhat larger heatsink/fan combo and according to vtune is running about 8 degrees warmer than the previous model. I don't expect it will be any quicker though. I'll post some pics on my blog in the next couple of days, so people can compare them. I might also have some wu completed to compare times against. BOINC blog |
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Send message Joined: 24 Dec 08 Posts: 738 Credit: 200,909,904 RAC: 0 Level Scientific publications |
1st wu returned from the newer card and it looks like it might be a bit faster. Comparing a 2478 credit wu between both of my gpu-capable machines below. Both have same version of drivers (180.48) and are supposedly running at stock speeds. Luke (new 9800GT) Elapsed time = 42,236 secs Time step = 84.472 ms Qui-Gon (old 9800GT) Elapsed time = 48,426 secs Time step = 96.853 ms That would look like approximately a 12% speed increase. Pics are on my blog if anyone wants to take a look. I have updated the driver on new machine tonight to 182.06, (after this wu was done) so we'll see if that makes any difference. More samples needed to get a clearer picture. BOINC blog |
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Send message Joined: 21 Oct 08 Posts: 144 Credit: 2,973,555 RAC: 0 Level  Scientific publications 
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Try running GPU-Z on the machine to identify differences in the cards. I suspect that the newer card my be on the smaller 55nm die and the older card on a 65nm (especially since the shader clocks are identical). |
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Send message Joined: 24 Dec 08 Posts: 738 Credit: 200,909,904 RAC: 0 Level Scientific publications |
Try running GPU-Z on the machine to identify differences in the cards. I suspect that the newer card my be on the smaller 55nm die and the older card on a 65nm (especially since the shader clocks are identical). GPU-Z screen shots on my blog. According to it they are both 65nm cards. The only difference I can see is the BIOS version. I have updated the drivers for the old card to the latest (182.06) tonight. Once the old card has processed a few wu I might be able to compare and see if its the driver that makes it faster. BOINC blog |
 Send message Joined: 17 Aug 08 Posts: 2705 Credit: 1,311,122,549 RAC: 0 Level  Scientific publications |
Looks like cost-optimized power ciruitry. If you take enough WU samples you should get similar performance.. they're the same chips, after all. I wouldn't expect a revolution in bios programming with a minor version update and after such a *long* time. MrS Scanning for our furry friends since Jan 2002 |
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