Upgraded CPU, suddenly two sticks of ram aren't compatible

unbwogable

Commendable
Jul 23, 2016
2
0
1,510
Had two sticks of this memory installed (1866 mhz ddr 3) along with two of these. Correct me if I'm wrong, it appears the only difference is the color. My motherboard is an ASRock 970A-G/3.1. 1000W psu, CPU is Athlon II quad core 3 GHz (adx640wfk42gm) running Windows 7 64 bit. No problem at all until I swapped the CPU for a Athlon 8 core 3.5 GHz (FD8320FRHKBOX) and suddenly it will only POST if I pull one stick (leaving 3), but will give me a blue screen in windows. If I remove the other stick, it boots fine no issues.

Doesn't matter which 2 sticks are installed or in what slots. I tried the like models in the dual channels, putting the like models side by side, I even swapped back to the CPU that works and tried the steps outlined here to test the memory. No issues, passed with flying colors. Any ideas?
 
Solution
No guarantees when mixing packages of DRAM, even if they are the same exact model. Also, they might play in one rig and not another, or after a hardware change like a CPU. I'd start with one set and raise the DRAM voltage + 0.05 and set the CPU/NB voltage to 1.25 (feeds the MC (memory controller)) then add the other two sticks. Might also want to try at 1600 9-9-9-27 to get them to play or even 1333, what was the old CPU and what is the new?

Tradesman1

Legenda in Aeternum
No guarantees when mixing packages of DRAM, even if they are the same exact model. Also, they might play in one rig and not another, or after a hardware change like a CPU. I'd start with one set and raise the DRAM voltage + 0.05 and set the CPU/NB voltage to 1.25 (feeds the MC (memory controller)) then add the other two sticks. Might also want to try at 1600 9-9-9-27 to get them to play or even 1333, what was the old CPU and what is the new?
 
Solution

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