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RAM running at wrong speeds with UCC?

post #1 of 4
Thread Starter 
I've got 2x2GB of Mushkin DDR3 1333 RAM running on an AsRock 870 Extreme3 (AM3) motherboard. The RAM is rated: 7-7-7-20 and 1.7-1.8V.

I used the UCC feature of the board to unlock my X3 to an X4, which works fine. Another feature of the UCC is to OC the rest of the system. I checked BIOS and CPU-Z - both show the CPU running at 3.2GHz, which is fine.
However...the RAM reads as follows in GPU-Z:
DRAM Frequency -- 573.3MHz
FSB : DRAM -- 3:8
The CL, tRCD, tRP, and tRAS were at 8-8-8-20, but I put it to 7-7-7-20 when I got the parts (a few months ago - I just noticed this).

573.3 x2 = 1146.6 --- this is LOWER than the RAM is rated at default settings. I went into the BIOS, and sure enough, the RAM was set to that speed. The next setting up is 730 or so. I tried this setting, but my system wouldn't run for more than 5 minutes.

When in the BIOS, I noticed that the voltage was at 1.701. I upped this to 1.71 then 1.729 when running at the next MHz setting, but it didn't help.

Note that my BIOS is sort of hijacked by the UCC feature - it provides its own tab called OC Tweaker. This is probably why the default setting of 666MHz for the RAM is not there.

Anything I can do about this? I just discovered this and am not pleased with it angrysmiley.gif
post #2 of 4
Try upping the RAM voltage even more. After all it is 1.7-1.8V. Looks like it's Samsung HCF0 ICs or Micron D9 probably, they're designed for those kinds of voltages and completely safe.
post #3 of 4
Thread Starter 
You, sir, are full of win (hopefully). More stable than previous at 1.799V, but will test for several hours to make sure.
post #4 of 4
Thread Starter 
What kind of cap am I looking at for safe voltage levels? It's still crashing (albeit much later than 5 min) at 1.86V.
Edited by JoeWalsh - 2/21/11 at 12:17pm
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