Memory not performing as it should on A10

David_502

Reputable
Nov 6, 2016
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0
4,520
My friend has a second computer his partner uses, an AMD A10 7860k on a Gigabyte F2A68HM-HD2 motherboard.
He has 2x4GB of G Skill 2133MHz DDR3 on this board and userbenchmark.com and Passmark both report it's running way below the speed it should be.
The system has a Geforce 750Ti.
It's running on the appropriate XMP profile in BIOS and he's run multiple tests with the APU enabled and disabled. Even forcing the APU to on and setting the memory buffer to 32MB results in absolutely no change to memory performance.
I have a feeling this is definitely related to the APU using the system memory as video memory but everything we've tried hasn't worked.
Any help or information would be greatly appreciated!
 

ritchiedrama

Commendable
Jan 31, 2017
33
0
1,540


The timings are all correct and also match what it says on the stick of ram.

I have noticed two things;

Once I remove the 750ti and use the APU again - CPU on userbenchmark increases and the ram "performs as expected"

 

ritchiedrama

Commendable
Jan 31, 2017
33
0
1,540
I also just tried some brand new Kingston HyperX Fury, same issue, and its the exact same 12.4gb/s and 8.47 gb/s on multi and single core, and this ram is 1866mhz, not 2133, so there is a setting somewhere, or something messing this up.
 

David_502

Reputable
Nov 6, 2016
16
0
4,520
We're also having the same issue with my own partner's computer, she has an A8 7650k on the A68H chipset, an MSI board with 8GB of Crucial 1600MHz DDR3.
I've benched it with auto memory settings and manual memory speed, voltage and timing settings.

Could it be that the AMD systems just aren't utilizing the memory as well as Intel systems do? I know the benchmarks are for the exact module but they don't take into account what the rest of the system is.

Even with the APU completely disabled memory performance just isn't anywhere close to what it is when the same memory is put in an Intel system.