what does memory clock do? (gpu)

it's just the random access memory dedicated for video. i wouldn't leave it at its default setting. when you overclock, only tweak one facet of the GPU at a time so when you start seeing visual artifacts or experience screen freezes, you know which facet needs to be decreased.

also, increase your clock speeds by increments of about 5-10MHz and then test every time before overclocking it more. crysis is a nice benchmark utility as is 3dmark.

it's just the random access memory dedicated for video. i wouldn't leave it at its default setting. when you overclock, only tweak one facet of the GPU at a time so when you start seeing visual artifacts or experience screen freezes, you know which facet needs to be decreased.

also, increase your clock speeds by increments of about 5-10MHz and then test every time before overclocking it more. crysis is a nice benchmark utility as is 3dmark.

mahlerite

i looked up your GPU by the way to see what other users have done with this card.

people are reaching:

675-740MHz for the core clock

970-1000MHz for the memory clock

and one guy told about his shader overclock of 1720MHz

there's also software out there called atitool (don't know if you know about it) that scans for artifacts. if you start seeing yellow dots or lines with that program, it's a sign to decrease one of your settings.

good luck.

yeah AtiTool is really helpful tool for scanning. Ive used it once when i OC'ed my 7800.