ATI Radeon HD 4000 Series discussion

[Calmatory]

Technically it is. Eric Demers posted this



So it sounds like cache can cause performance to scale greater than linearly

I stand corrected, but this only applies to Crossfire scaling.

So it goes like this: If clockspeed(or amount of cards, processors, memory etc.) increases by 100%, performance can't increase by more than 100% UNLESS the internal efficiency of the chip increases aswell (In this case the additional cache increased the internal efficiency of crossfire, thus the +100% increase in performance).

[alexio]

I stand corrected, but this only applies to Crossfire scaling.

So it goes like this: If clockspeed(or amount of cards, processors, memory etc.) increases by 100%, performance can't increase by more than 100% UNLESS the internal efficiency of the chip increases aswell (In this case the additional cache increased the internal efficiency of crossfire, thus the +100% increase in performance).

It does not only apply to multi-GPU solutions If you increase the performance/size/speed of some part of the GPU (or other complex micro processor for that matter) you can get more than linear scaling. In most cases this is only theoretically, but it can happen.