How exactly do you overclock a graphics card?

SlyReaper

SlyReaper

SlyReaper

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I've got a Radeon HD3850 Pro. A very nice card. But having had it more than 2 weeks, I've gotten itchy fingers again. I want to overclock it.

There's a utility in Catalyst Control Centre allowing my to raise the core speed from 720MHz to 730MHz, memory clock from 900 to 950. But I want more. I'm familiar with overclocking my CPU by raising the FSB speed. I guess that the way to increase graphics card performance would be to increase PCI bus speed. Trouble is, I have no way of knowing the BASE PCI bus speed. In BIOS, it just says AUTO without telling me what it's set at.

Any pointers?
 
SlyReaper said:
I've got a Radeon HD3850 Pro. A very nice card. But having had it more than 2 weeks, I've gotten itchy fingers again. I want to overclock it.

There's a utility in Catalyst Control Centre allowing my to raise the core speed from 720MHz to 730MHz, memory clock from 900 to 950. But I want more. I'm familiar with overclocking my CPU by raising the FSB speed. I guess that the way to increase graphics card performance would be to increase PCI bus speed. Trouble is, I have no way of knowing the BASE PCI bus speed. In BIOS, it just says AUTO without telling me what it's set at.

Any pointers?
Click to expand...

Not true, changing the bus speed can mess up a lot. Changing the core and memory is pretty much all there is to it. Theres no BIOS involved in GPU overclocking.
 
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