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Tom's Hardware > Forum > Overclocking > Memory > [Solved] 1333 RAM running at 750MHz

[Solved] 1333 RAM running at 750MHz

Forum Overclocking : Memory [Solved] 1333 RAM running at 750MHz

Best answer from suteck.

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I recently got my PC and I overclocked my CPU to 3.6GHz. Upon later inspection of CPU-Z, I noticed that my RAM was running at a bit more than half the frequency it was supposed to run at. In AMD Overdrive, I can bring up the HT Ref Clock to the max (400 MHz) which would bring up my RAM frequency to roughly 1333 MHz. If I lowered the CPU multiplier to 9x, then I also get my CPU frequency at 3.6, like I want it. However, my PC crashes after even a slight increase to HT Ref Clock. Later I went to the BIOs and looking at RAM timings, I realized my RAM was running at DDR3-800, which I brought up to DDR3-1333. However this accomplished nothing as it was still running at 750 MHz.
Here is my CPU-Z Validation
http://valid.canardpc.com/show_oc.php?id=2120202
Anybody know how to fix this? Right now I'm just experimenting in the BIOS but nothing seems to help. :(

Reply to CrazyTurkishBoy
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CrazyTurkishBoy wrote :

I recently got my PC and I overclocked my CPU to 3.6GHz. Upon later inspection of CPU-Z, I noticed that my RAM was running at a bit more than half the frequency it was supposed to run at. In AMD Overdrive, I can bring up the HT Ref Clock to the max (400 MHz) which would bring up my RAM frequency to roughly 1333 MHz. If I lowered the CPU multiplier to 9x, then I also get my CPU frequency at 3.6, like I want it. However, my PC crashes after even a slight increase to HT Ref Clock. Later I went to the BIOs and looking at RAM timings, I realized my RAM was running at DDR3-800, which I brought up to DDR3-1333. However this accomplished nothing as it was still running at 750 MHz.
Here is my CPU-Z Validation
http://valid.canardpc.com/show_oc.php?id=2120202
Anybody know how to fix this? Right now I'm just experimenting in the BIOS but nothing seems to help. :(



I just noticed the same thing and was looking into the issue myself.

Reply to boris20
Best answer

I believe what you're looking at is the single ram speed. Since it is ddr, (double data rate), your actual speed is 1500MHz = 750 X 2. Go into the cpu-z and under the memory tab look at the dram frequency - It should say 750.0 MHz. If that's the case you are running as stated above ^ ^ 1500MHz.


Message edited by suteck on 11-27-2011 at 09:41:27 PM
------------------------------ http://valid.canardpc.com/cache/banner/2339018.png

Read & Follow this Thread "System won't boot" and "no video output" checklist
http://www.tomshardware.com/forum/261145-31-perform
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