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#1071
The BIOS has to have a setting for it, usually called DRAM frequency or by boosting the base clock frequency. Then you may have to loosen timings, make the numbers bigger by one, ex: from 10-11-11 to 11-12-12, and maybe a voltage increase of 0.05V or 0.10V.
Messing with it can make it non-booting though so you'd have to turn the PSU off and re-try.
Overclocking the RAM on my Gigabyte board wasn't too difficult. It has dual BIOS, the user has access to the primary BIOS only so if the settings cause a no-boot situation, the board will use the secondary BIOS to boot, allowing the user to change his settings.
In the first picture, CPU Host Frequency = FSB.
In the second picture, System Memory Multiplier (MCH Strapping) sets the RAM speed relative to the FSB.
Memory Frequency is showing the default frequency (800) and the actual frequency (1099).
In my case, I got lucky and the standard timings (5, 5, 5, 18) work fine.
I could probably tweak it a bit more but there's only so much performance to be found in obsolete hardware.
Kent
John, sometimes overclocked RAM actually performs worse than at stock settings. A lot depends on each CPU and chipset combination.
That is true.
If you can find the sweet spot, however, it will make a noticeable difference.
For example, running IBT standard, I got this:
FSB 400MHz CPU Multi 9.5 RAM Multi 2.00 = test run time 257.85 sec
FSB 400MHz CPU Multi 9.5 RAM Multi 2.66 = test run time 241.26 sec
RAM timing remained the same, 5, 5, 5, 18.
Currently running:
FSB 412MHz CPU Multi 9.5 RAM Multi 2.66 = test run time 233.36 sec
System gets unstable (IBT fails) if the FSB is raised above 415MHz. Fails to boot if the CPU or RAM multi is raised. This is as good as it gets...
Hum have set the timing to 6 6 6 17 and I don't see any appreciable difference the WEI for example is just the same on 5.9. Mind you I didn't touch the volts on that setting.
Put a Crucial M500 SSD in this weekend & what was once the lowest subscore is now the highest :)