魔王撒旦
Little detail is known about the new 55nm 'refresh' of the G92 core that is being used on the GeForce 9800 GTX+, so it's tough to know what exactly NVIDIA did. Our sources inside NVIDA claim that they did nothing more than shrink down the G92 and didn't do too much polishing. We've asked NVIDIA to provide some power specifications for the new core and haven't been given anything solid yet. The ballpark figure that we were tossed is that the GeForce 9800 GTX+ TDP is within 10-15W of the standard GeForce 9800 GTX and that it is certainly below 180W. The one area that is still unknown is overclocking performance. The original GeForce 9800 GTX was found to be a good overclocker when we last looked at it in April 2008. Let's take a look and see what this new card can really do when pushed to the limits. Overclocking The Card
With the new 55nm core the default clock speeds on the core and shaders are higher, but the memory cock frequency remains the same. The question that many are wanting to know is how far can this core go with the new die shrink. It seems some are expecting the die shrink to really raise the bar! The highest settings we could get stable with the GeForce 9800 GTX+ were 855MHz on the core and 2200MHz on the shaders. That is 55MHz higher on the core and 175MHz higher on the shaders than what we could reach on the old 65nm G92 core. For those that like percentages the overclock is roughly 6% higher on the core and 8% more on the shaders, which is significant, but nothing over the top. Usually with die shrinks overclocking performance stays close to the same, even more so when no major architecture changes are made.
The core on the GeForce 9800 GTX+ does overclock better than the original GeForce 9800 GTX cards and to top it off it has different branded GDDR3 memory that also overclocks better!
The test system was running Windows Vista Ultimate 64-bit with all available Microsoft updates including the hotfixes required for enthusiast video cards to run correctly. ATI CATALYST 8.5 drivers was used on the Radeon HD 3870 X2 graphics card and ATI CATALYST 8.6 drivers were used on the nw Radeon HD 4850 graphics card. NVIDIA Forceware 175.16 WHQL drivers were used on all GeForce graphics cards except for the GeForce GTX 280 series cards as they used Forceware 177.34 drivers and the GeForce 9800 GTX+ that used Forceware 177.39 graphics drivers. All results shown in the charts are averages of at least three runs from each game or application used
Component
Brand/Model
Live Pricing
Processor
Intel Core 2 Quad QX9770
Click Here
Motherboard
Gigabyte X38-DQ6
Memory
4GB Corsair PC2-9136C5
Video Cards
See Above
Hard Drive
Western Digital SATA RaptorX
Cooling
Corsair Nautilus 500
Power Supply
Corsair HX620W
Operating System
Windows Vista Ultimate
查看详细资料
TOP