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NVIDIA's shady trick to boost the GeForce 9600 GT

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Soldato
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http://www.techpowerup.com/reviews/NVIDIA/Shady_9600_GT/4.html

On "normal" VGA cards, when you increase the PCI-Express bus frequency you increase the theoretical bandwidth available between card and the rest of the system, but do not affect the speed the card is running at. On the GeForce 9600 GT, a 10% increase in PCI-Express frequency will make the card's core clock run 10% faster!
Click to expand...
The automatic increase of 25 MHz on the PCI-Express bus frequency yields an increase of 25% or 162.5 MHz over the stock clock (assuming a 650 MHz clock board design). With a final clock of 812.5 MHz you can bet this card will perform much better, when used by an unsuspecting user, on an NVIDIA chipset motherboard with LinkBoost.
Click to expand...
It is certainly nice for NVIDIA to see their GeForce 9600 GT reviewed on NVIDIA chipsets with LinkBoost enabled where their card leaves the competition behind in the dust (even more). Also it could send a message to customers that the card performs considerably better when used on an NVIDIA chipset? Actually this is not the case, the PCI-Express frequency can be adjusted on most motherboards, you will see these gains independent of Intel/AMD CPU architecture or Intel/NVIDIA/AMD/VIA chipset.
Click to expand...


pciaa3.jpg

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Explains the 780i results > http://en.expreview.com/2008/02/23/geforce-9600gt-review/?page=12
 
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So if you use an Intel mobo with 9600GT you'll need to increase PCI-E frequency by 25mhz in order to have similar performance as a nvidia chipset with linkboost!? That is a very high speed for PCI-E isn't it? I once tried 120Mhz on PCI-E and couldn't boot into windows as it correupted the HDD.

Maybe someone with 9600GT can test this?
 
So in other words all it does is er... work with a feature that Nvidia have been advertising openly for a while now? Shady. Not.
 
ok, in that case, if you clocked the gfx card by 25%, would that give you the same performance as using link boost to clock it by 25%?
 
It's a feature... that's simply what it does... you don't have to manually do anything as it's all done for you... geddit?
 
It is a bit weird, we had this on the nvidia chipset 650i and I wondered what is the point when pci-e frequency does not limit the cards anyway.

Anyway I have pci-e at 130mhz and its always been fine. I dont use sata or onboard raid though, ide is fine

If its automatic no hassle overclocking and it works, be happy I reckon :)
 
Heard all this before, asus got blame last time for features in bios set to auto by default that gave gains in benches..

Anyone who overclocks will turn all them settings to Manual and Kill Peglink etc totally.
 
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