800 Mhz DDR2 as 667? + overclock help!

December 8, 2011 at 12:23:06
Specs: Windows 7 64-bit, 2.81Ghz/4 GB
Hey guys, I built this PC about 4 years ago with 2 gigs of PC2 6400 (800 MHz) and just put in another 2 gigs (also 800 MHz) since they were cheap on newegg. When I boot up my PC and see the BIOS detect the RAM with all four sticks in it displays "667 MHz, dual channel, 128-bit" I can't figure out why the four sticks won't run together at 800 MHz unless it's because they're different brands. When I have just the two OCZ sticks or just the two Kingston sticks the BIOS will detect it correctly as 800 MHz.

My other problem is with overclocking. This is a whole new thing for me so can I get some help with it?

Here's some product info:

RAM OCZ: http://www.ocztechnology.com/ocz-dd...
RAM Kingston: http://www.newegg.com/Product/Produ...
Mobo: http://www.gigabyte.us/products/pro...
CPU: AMD Athlon 64 X2 Dual Core Processor 5600+ 2.81 GHz

And CPU-Z screen shots for CPU, Memory, SPD slot 1 (OCZ), SPD slot 3 (Kingston):


Also, not sure if this has anything to do with the RAM not running at 800 MHz, but if you notice the CAS latency for the OCZ is 5 while the Kingston sticks have CAS latency 6.


See More: 800 Mhz DDR2 as 667? + overclock help!

December 8, 2011 at 14:39:06
Take a closer look at CPUZ. Your RAM isn't even running at 667MHz, it's running at 625MHz (312.7MHz frequency). You need to manually configure the BIOS settings. Do NOT simply accept the defaults.

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December 8, 2011 at 15:54:34
What should I configure in the bios? There's no options for the RAM except to turn up the voltage...the only other things I can do is mess with the CPU freq, and the multiplier.

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December 8, 2011 at 16:22:53
I just looked at the BIOS chapter of your motherboard manual & it shows Timing Mode, Memory Clock, CAS# latency, DDR2 voltage. You need to highlite DRAM Configuration & press ENTER. Timing Mode has to be set to Manual. You also need to disable Spread Spectrum, lock the PCIe at 100MHz, & disable "Top Performance". Unless you have a Black Edition CPU, you will not be able to increase the multiplier (ratio) above it's default setting. You can increase the CPU Frequency, but I don't know how much you'll get out of it without the ability to limit the HT frequency.

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December 8, 2011 at 20:18:36
I don't know what manual you were looking at but none of those options show up in my BIOS nor in the manual that I'm looking at.

Here's the manual from gigabyte's website which shows what I see in my BIOS:


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December 8, 2011 at 21:46:13
"I don't know what manual you were looking at..."

I clicked on the link you provided in the original post & downloaded the manual from there. Which BIOS version are you running? F11J? If not, maybe you should update. Do you have EasyTune installed? If you can't overclock via the BIOS, maybe EasyTune has what you need. Is your board revison 1.0 or 2.0?

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December 8, 2011 at 23:28:37
That was my mistake, I really thought I had a rev 1.0 board but it turns out I have a rev 2.0 board which doesn't have the "DRAM Configuration" option. And yes, I have the most up to date drivers:


The screenshot indicates that I have beta drivers so I updated again, just in case, using the @BIOS utility on the website and when I booted up again CPU-Z still indicated that I had Beta F11J BIOS, so I believe these are the latest ones (10/22/2008). I'm gonna try EasyTune (even though I've heard software overclocking sucks) and see if it has anything I need now, update in a bit.

So EasyTune5 displays the following:


I am unable to change the memory freq but I can change the FSB. After doing so and applying the changes by pressing the GO button the memory freq changes as well. I can only do this so long as my computer will just freeze up at a certain point so I won't be able to just up the FSB until my memory freq hits 400 MHz....any other suggestions?

Can I do anything with Memset?: http://www.tweakers.fr/memset.html

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December 9, 2011 at 18:56:48
So I just went into BIOS and apparently they hid the menu for the special features like manually setting the DRAM configuration and disabling the Spread Spectrum. Hitting ctrl+F1 opened up a new menu, Advanced Chipset Features, and I was able to do these things. I followed your above advice, riider, and finally got my RAM running at 800 MHz (for some reason I couldn't set it to CL6 so I stuck with CL5).

I still don't see "Top Performance" though I found it in one of the screenshots in my manual =\

Also, can I not just decrease my HT multiplier to limit the HT freq?

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