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Timings and volts

post #1 of 6
Thread Starter 
i have PC ddr2 8000 running at 460mhz with a 921 bus speed at 1:2.the native timings are 5 5 5 15 at 500mhz but im running them at 4 4 4 12 is this ok? seems to be not that stable when runnung 3dmark 05 i get a reboot after its almost done.also the volts for the ram is states 2.3 volts i have it at 2.05 volts.should i up the volts to the max? or wait to get the 500mhz? O this the GEIL DDR2 pc 8000
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post #2 of 6
Run Memtest86 to assess the stability of your RAM. It will identify if there are problems with your current configuration or will rule out the RAM being the cause of your instabilities. Also run Prime95 to assess overall system stability. If Memtest passes and Prime95 fails, the most common issue is the CPU settings (frequency/voltage combination or frequency in excess of the CPU's max).

If your RAM is the issue, it doesn't hurt to bump the vdimm (RAM voltage) a notch or two at a time just so long as you stay below the warranty limit for your particular RAM. It sounds like you just need to do a bit of testing and then perform a bit of trial and error to get the most out of your gear. All in all, it sounds like you're on the right path.
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post #3 of 6
Thread Starter 
well i ran mem test and it ran first test passed ran for 19mins.i also played BF2 online for about 2 hrs no reboots i upped the voltage 1.48 now on cpu.well just wonderingis 4 4 4 12 better then 5 5 5 15 thats realy what the ? is also what sould the write recovery time be? mine is at 4 4 4 12 then 4? thanks i just upped u again
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post #4 of 6
yes 4 4 4 12 is better, the lower the better try and get them as low as possible
    
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post #5 of 6
Yes, 4-4-4-12 is definitely better than 5-5-5-15, but I suspect that the real world difference is pretty small. If you can squeeze a higher frequency out of your system with looser timings, you'll likely see better performance than at a lower frequency with tighter timings.

I did a bit of research on write recovery time, and lower is theoretically better. However, some tests have been done that show no performance increase by dropping the timings down a notch. The one article suggested 2T for DDR266 and 3T for DDR400. Since you're using DDR2-1000, 4T or 5T is probably just about right.
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post #6 of 6
Thread Starter 
thanks to all
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