GTX 295 & GTX 285 Graphics Cards

21. Blu-Ray Playback23. Conclusion


Overclocking/Thermal Performance

Nvidia may have restricted the specifications of the GTX 295 to 576/999MHz out of the box but that does not stop end users from overclocking the cards themselves. Using the Nvidia System Tools software we can add a performance section to the control panel and through that increase the speed of each card. This also applies to the GTX 285 which can be overclocked in the same way, through the increases are likely to be smaller on these enhanced models.

 
Stock
Maximum Overclock
BFG 285
702/1332
753/1405
Zotac 285
702/1296
745/1388
Zotac 295
576/999
680/1245
BFG 295
576/999
686/1240

Our final overclocks are shown above and the main talking point has to be how close each group of cards is when overclocked. The two 285 models are within a few MHz of each other in both core and memory speed with the GTX 295s less than 20MHz apart, at most. The clock speed increases translate into the following performance.

Temperatures
A particularly strong point for Nvidia in recent times has been thermal performance and noise levels, the GTX range run cooler than the Radeon 4800 series and do so with low fan speeds and minimal noise levels. The new 285 and 295 continue this tradition with the lower specification model running to the same temperature levels as the GTX 280 and the new dual GPU product exceeding all of our expectations. The comparison between the GTX 295 and 4870 X2 really does show how badly cooled the ATI part is.

 
Idle (°C)
Load (°C)
BFG 285
54
76
Zotac 285
53
75
Zotac 295
53
71
BFG 295
53
71
GTX 280
55
75
4870 X2
87
98
4870 1GB
75
82

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