What's the real GeForce 7800GTX Clock Speed?

[balilu]

Hilbert from Guru3D and Unwinder (Rivatuner programmer) have discovered some unusual reports about the Geforce 7800GTX core clock. They found out that when you start a 3d Application such as a game the Core Clock jumps from 430 to 468 which is about a 40mhz increase. also if the vga is overclocked at 450 or any other clock it will increase by approximatley 40mhz.

Read Here:

After investigating it myself it seems that the minute you startup a 3D application, the GPU core frequency jumps towards 468 MHz (should be 430), a ~40 MHz difference is reported with any GeForce 7800 GTX.

I just verified it, during some new test sessions with core clock monitoring we noticed that the G70 although clocked at 430 standard will in 3D applications immediately jump towards 468 MHz. Even overclocked at 480 Mhz the clock will jump towards 522 MHz, again that ~40 MHz difference. What is going on in that G70 GPU huh ??

After puzzling this and actually noticing that ASUS even has a marketing phrase for this called "geometric clock delta", they are actually advertising a 470 MHz product under that name with 'geometric clock delta' advertised.

This can be an issue towards companies which make there products factroy overclocked such as BFG and Gainward because companies such as Asus are advertising that their products are factory overclocked @ 470mhz which in reality is only 430mhz and that could be as a disadvantage for companies such as bfg and also they are misleading customers.

Source: Guru3D

 

[FarFarAway]

Yes I noticed that my card was reading a very high core in the 3Dmark '05 test. Maybe this is why??

http://service.futuremark.com/compare?3dm05=990195

Core Clock 534 MHz

 

[balilu]

yeah i hink

 

[NickS]

So the new cores have built in dynamic OC/ing! =]

 

[FalconFX]

hmm my "old" 6800 U oiverclocks itself automatically in games but only about 20 MHZ so I dont realy think that is something new. Is it ?

 

[PV5150]

MSI's drivers have a dynamic overclocking facility built into them. Is there anything in the 'Nvidia properties' that shows this kempez?

 

[FarFarAway]

MSI's drivers have a dynamic overclocking facility built into them. Is there anything in the 'Nvidia properties' that shows this kempez?

Not that I can see mate, but I haven't really looked properley. I have used a proggie to monitor the core during my games and this is indeed true. It throttles up 40MHz

 

[PV5150]

Hmmm that's really interesting kempez, I might have a bit of a google after tea and see what I can dig up

 

[FarFarAway]

Hmmm that's really interesting kempez, I might have a bit of a google after tea and see what I can dig up

Cool well let me know as it seems mine does this. Not that I'm bothered!!

 

[PV5150]

Roger that, will do!!! I can understand why it doesn't bother ya

 

[balilu]

it's supposed to happen to all 7800gtx cards