Does the core clock impact when memory correction sets in?

[Freddy1765]

I'm about to buy a 7850, and I obviously plan on OC'ing it.
I've already read loads of posts about it, but there is one thing I'm still wondering about:
Does core clock influence optimal memory clock, or is it possible to simply run a benchmark at stock core, and only increase memory clocks until the score begins to decrease, then up core clock at that particular memory frequency?

And one other thing, which would be more beneficial in terms of performance, and which clock needs more volts?

 

[blastingcap]

I'm about to buy a 7850, and I obviously plan on OC'ing it.
I've already read loads of posts about it, but there is one thing I'm still wondering about:
Does core clock influence optimal memory clock, or is it possible to simply run a benchmark at stock core, and only increase memory clocks until the score begins to decrease, then up core clock at that particular memory frequency?

And one other thing, which would be more beneficial in terms of performance, and which clock needs more volts?

At anything less than 2560x1440 I would always prefer faster core to faster memory. Even at 2560x1440 I would probably still prefer core to memory as it is likelier to be the bottleneck. And yes core and memory can hurt each other in the sense that they both give off heat, so turning memory down for instance, means less heat and perhaps a smidge more overclocking headroom for the GPU if their cooler cools both.

 

[Concillian]

There is some interaction between the core and memory clocks.

I think part of the issue is the power draw through the 6-pin. since core is generally more important than memory, most will leave mem stock, then pump core, then get whatever they can from memory.

 

[Freddy1765]

Ah I see. I'll definitely keep that in mind when I start fiddling with the card.
Thanks to the both of you!

 

[Lonyo]

I would guess the best plan of attack is to do what you said, increase mem clock until scores decrease to find your max mem, then increase your core clock to find max.
Then when you set max memory and max core, decrease memory to see if scores increase or decrease, to check whether your memory has become impacted by core increase.