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AMD APUs and more ram

Go to solution Solved by Sophia_Borjia,

Amd apu maxs out at 16gb used with 32+ system ram.  Not sure how fps would be affected, it won't be comparable to discrete gpu with 16 gb.  

Hi just a quick question. I read a lot about APUs and how ram speed influences their performance but how about quantity? If I were to add 16, 64, 128 GB RAM would performance increase on par with a dedicated GPU or at least significantly?

Thanks

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No. Integrated GPUs are too slow to benefit from additional memory. In most cases the amount of memory you can dedicate to an iGPU is limited (for that very reason).

 

The speed is primarily dictated by the speed of the GPU core. Its speed may be limited by how fast it can access memory, so faster memory helps up to a certain point. Beyond that point, additional memory speed is not going to improve performance since the GPU core can't make use of it.

 

Similarly, speed may be limited when the data that is needed doesn't fit into its memory. So stuff needs to be swapped in and out of memory a lot. Once you have enough memory to hold everything you need, additional memory has no benefits.

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3 hours ago, Eigenvektor said:

No. Integrated GPUs are too slow to benefit from additional memory. In most cases the amount of memory you can dedicate to an iGPU is limited (for that very reason).

 

The speed is primarily dictated by the speed of the GPU core. Its speed may be limited by how fast it can access memory, so faster memory helps up to a certain point. Beyond that point, additional memory speed is not going to improve performance since the GPU core can't make use of it.

 

Similarly, speed may be limited when the data that is needed doesn't fit into its memory. So stuff needs to be swapped in and out of memory a lot. Once you have enough memory to hold everything you need, additional memory has no benefits.

Thanks

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Amd apu maxs out at 16gb used with 32+ system ram.  Not sure how fps would be affected, it won't be comparable to discrete gpu with 16 gb.  

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