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How does ram speed affect APU ?

I know 1600 vs 1866 almost no difference in fps, only on professional programs, photoshop, video editing and so on, but there is video where ram speed affects really much on APU is that true ? about 10 more fps on every tier
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More about ram speed affect apu
  1. Your FPS is effected by ... your processor, video card and ram!
    APUs have the video on chip! so that kind of negates that aspect of the equation!
    Your ram speed is the ability of data to move from memory to processor and back again or to a device!
  2. Generally in a desktop, you won't notice RAM frequencies higher than 1600mhz. Passed that, very few programs benefit from it. In this scenario, the PC has a discrete graphics card with its own RAM, also known an VRAM. Graphics chips benefit greatly from higher frequencies, so VRAM tends to run at these higher frequencies. Techquickie on YouTube has a great explanation of this.

    In an APU, you have a processor and graphics chip built into one piece of hardware. Since graphics chips benefit from higher frequency RAM, and desktop applications that are more CPU intensive don't really care in the grand scheme of things, it is better to have higher frequency RAM matched with APUs.

    So basically if you have a CPU with a discrete video card, you won't really see a benefit from frequency as much as you will timings, but on an APU you will see a much larger performance gain from frequency.
  3. Best answer
    APUs on-chip video and processing power is directly connected with RAM, so a higher DRAM Frequency means the entire system is improved.
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