DDR2 DRAM Frequency Limit

HardwareExtreme · Feb 28, 2017

Hello everyone,
So I was overclocking my Dell Optiplex 960 which has a Q6600, and in CPU-Z the DRAM Frequency was about 380mHz. As of right now, when I overclocked it from its normal 2.4gHz to 3.0gHz the DRAM Frequency went up as well with the FSB since they are tied. I am using setFSB. Right now, it is at 501 MHz stable. However, what is the max number this can go to without going unstable? This is some OEM Hynix RAM. I was wondering since I want to try and hit 3.2GHz with this processor, and that will take it well over 500MHz.

Supahos · Feb 28, 2017

Can you not change the strap?

HardwareExtreme · Feb 28, 2017

How can I do that? The BIOS does not allow overclocking, and I am using a software program called setFSB to overclock. Is there a piece of software that can do this?

Elysian890 · Feb 28, 2017

DDR2 should go up to 1066MHz (533) if the modules and board can handle that frequency, if you hit 533 but get unstability try adjusting clocks and latency manually from BIOS

HardwareExtreme · Feb 28, 2017

I'm going to try and take this thing to 3.2GHz. However, this is an OEM machine as I said before and I can't adjust anything about the memory frequency or strap in the BIOS.

bgunner · Feb 28, 2017

DDR2 memory controllers are good for up to 1066 MHz which would read 533 in CPU-Z.

Can your ram reach this and be stable? There is no way to tell this. Every chip will overclock differently so no one can say. You will need to try it and test to find out the limits of your hardware. This is a big part of overclocking, lots of time spent testing just to find out you went to far or not far enough.

HardwareExtreme · Feb 28, 2017

Ok, system froze at 344MHz (multiplier is 9), which was a memory frequency of 511.7 MHz. I will see if I can adjust the settings in the bios, but I dont think I can. This means that I can only reach about 3.1GHz before I freeze.

The system FSB was like 1364 mHz, and the memory was 511 Mhz on the last stable overclock, which was 3070 MHz. Would it probably be RAM or the main FSB that is causing my system to freeze?

I also have an Intel DG33TL Motherboard with EXACTLY THE SAME PLL as my 960, so i may try overclocking on this board, since i can cool it a little better.

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DDR2 DRAM Frequency Limit

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