How GPU-Z Gets Graphic Card Information

[Jason S.]

Hello all,

I'm wondering how the GPU information are retrieved.

Is there a database inside GPUZ and just does mapping via PCI vendor/device IDs or
it reads those displayed information, like memory type, default clock rate from graphic
card directly?


Does anyone know how GPUZ works?

Thanks for any possible answer.

 

[cool_recep]

Search for MFC...You can find something...related to retriewing low level info..

 

[W1zzard]

the mapping of devices and vendors is done with predefined table
memory type, clocks etc are read from the card directly

 

[Mussels]

the mapping of devices and vendors is done with predefined table
memory type, clocks etc are read from the card directly

'magic'

 

[btarunr]

In exceptional cases GPU-Z reads from the driver (Shader clock)

I remember Solaris17 once clocked his shader to some 5GHz or something using Riva Tuner and GPU-Z was actually reporting his shader clock to be that 5 GHz (whatever he set in Rivatuner) It was when he used the Rivatuner hardware monitor, he realised that his shader clockgen didn't change at all.