Originally posted by starshipeleven
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The article you see should already hint that faster RAM helps, and that does so more detectably than CPU performance (which is probably like 1-2%), the issue is that even with an OC the iGPU remains starved for memory.
Meanwhile, if you check Phoronix articles with AMD APUs tested with different memory speeds, the performance gain is directly proportionate to the memory speed across each frequency increase. This suggests those GPUs were completely bottlenecked.
If the bottleneck was the GPU itself, adding faster RAM would not have helped much (like overclocking RAM for CPU loads).
Keep in mind, depending on the test you do, faster RAM will just about always improve performance. However, that doesn't mean the RAM is significantly bottlenecking the processor in real-world tests.
In other words, if a 66% RAM frequency increase results in a roughly 66% performance increase, the processor is starving for bandwidth. But when either a 38% or 66% increase results in a 10% performance increase, the RAM isn't enough of a bottleneck to worry about.
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