View Full Version : GTX 275 > GTX 285 at lower resolutions
velozzity
06-19-09, 09:50 AM
My question is simply, Is the gtx 275 a faster solution at lower resolutions. Im curious because I recently sent back a 285ftw for overheating and I see in all the reviews that the 275ftw runs about 8 - 10c cooler plus it's clocked slightly higher than the 285 ftw.
My reasoning behind this is simple, at lower resolutions I am under the assumption that the memory is less important, so If the 275ftw has higher clocks (and uses the exact same gpu), should it outperform the gtx 285ftw or be the equivalent until you reach higher resolutions which are more frame buffer limited. any input would be greatly appreciated.
thideras
06-19-09, 09:58 AM
At lower resolutions, the CPU is going to be the limiting factor; so the GPU won't matter, they should be the same.
necrokiller
06-19-09, 10:03 AM
Depends how low of a resolution you're talking about. Uptil 1280x1024 and even 1440x1050 they'll both perform exactly the same...and you'll see the faster card shine at higher resolutions. The 285 is only 3-4fps faster than the 275 in the first place. But according to the benches ive seen, the 285 will be faster by a couple of frames, if not the same, as compared to 275 at lower resolution of 1280x1024.
At lower resolutions, the CPU is going to be the limiting factor; so the GPU won't matter, they should be the same.
Actually in Crysis, the 275 outperformed the 285 at lower resolutions when AA and AF were enabled...which was strange to me.
http://ixbtlabs.com/articles3/i3dspeed/0409/itogi-video-cr3-wxp-aaa-1280-pcie.html
jokers_greg
06-19-09, 10:35 AM
Actually in Crysis, the 275 outperformed the 285 at lower resolutions when AA and AF were enabled...which was strange to me.
http://ixbtlabs.com/articles3/i3dspeed/0409/itogi-video-cr3-wxp-aaa-1280-pcie.html
That's typical of crysis, it doesn't know what it wants.
necrokiller
06-19-09, 10:39 AM
That's typical of crysis, it doesn't know what it wants.
Hahaha
velozzity
06-19-09, 11:12 AM
Well technically what I was saying is the evga gtx 275ftw is faster clocked on the core and shaders and uses the exact same gpu only difference is the memory bus width and another 128mb of ram so I was wondering if i have a 1440x900 res monitor and maybe will go with the 1600x1080 which would be better a 285ftw or a 275ftw. Also I have read various reports of overheating problems with the 285ftw because it seems they cant support the high overclock but the 275 it is unknown right now.
deathman20
06-19-09, 01:27 PM
For such a low res I'd stay stick with the GTX275. If you where going for a 1920x1200 res, I'd say consider the GTX285. For the difference though they are exactly the same card, except the 275 will be slower when it requires more memory bandwidth.
GTX285 FTW is hotter due to higher voltages they are putting into it. If its an EVGA one its .1V higher if not mistaken (1.15V default, 1.22V ?, 1.25V FTW) at least with EVGA cards. As temp wise, I can run mine at or above FTW speeds and its not really warm, mid 70's loaded in games with 65% fan speed.
Really they are the same die if not mistaken just 1 less memory chip on the board... so for it going faster and being cooler seems odd.
The 275's all use B3 revision cores from what I have seen. If the 285's were still using B2 or older, there may be some yield improvement that may explain the thermal difference.
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