needing explanation: GPU clock versus VGA core clock

[vois2]

Hi everyone. Thanks to helpful advise from folks at Subsim.com I've removed my Ati RADEON x300se and replaced it with a BFG 6600 GT OC. Now, that BFG card comes overclocked out of the box, which leads me to this question:

When I check graphics clock speeds in Everest Home and PCMark05, I get different numbers. Can someone explain this to me please? Specifically, I don't understand the difference in the two reports below, regarding memory clock.

Here are the specifics:
P4 630 HT , 1 gig RAM , 6600 GT overlocked to 525 MHz

Everest Home readings:
Graphics Processor Properties GPU Clock 526 MHz
Memory Clock 526 MHz
RAMDAC Clock 400 MHz

Everest Home
Memory Bus Properties Real Clock 526 MHz
Effective Clock 1053 MHz

Yet PCMark05 reports these:
VGA Memory Clock 1.1 GHz
VGA Core Clock 299.3 MHz

Thanks in advance!

[Kapitan]

erk beyond me

[tycho102]

The Nvidia cards clock down during 2D, and clock up in 3D. The memory stays the same, but the core clocks up and down.

Have you downloaded Coolbits? You should set your own clocks with that card.

[XabbaRus]

You have an AGP and PCI-Express slot ?

Wow

I only have a PCI-Express slot with the same Radeon Card you took out.

I haven't had any problems with the card and performance is fine for even IL-2 FB full video settings.

Sure I'll get and X800 when I can afford it though (Read Never)

[vois2]

Originally Posted by tycho102

The Nvidia cards clock down during 2D, and clock up in 3D. The memory stays the same, but the core clocks up and down.

Have you downloaded Coolbits? You should set your own clocks with that card.

Thanks, tycho. I'll try the coolbits program. BFG has already overclocked the 6600 GT card out-of-the-box, to 525 MHz as opposed to spec 500 MHz. But I guess I can use Coolbits to tweak it up a bit more.

[vois2]

Originally Posted by XabbaRus

You have an AGP and PCI-Express slot ? Wow

Both the Radeon x300se *and* the BFG 6600 GT OC cards are PCI-Express.

Originally Posted by XabbaRus

I only have a PCI-Express slot with the same Radeon Card you took out. I haven't had any problems with the card and performance is fine for even IL-2 FB full video settings.

I played games with the x300se for 6 months, and it was 'fine' also but runs at MUCH slower speeds than the 6600 GT. It's a whole different ball of wax gaming with the 6600 GT, compared to the very low level x300se. It caused 3dMark05 to jump from lower 1100s scores, to upper 3700s scores. In Silent Hunter III, the graphics spin around the bridge of the conning tower like a freak on acid.