Memory timings

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jhafner

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Jul 24, 2011
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hello;

does lowering memory multiplier to 800mhz without lowering timings a bad thing?

and what is the best timings for 800mhz multiplier?

thanks in advance for your help.

regards...
 
Solution
By 800MHz, do you mean DDR3-1600, or DDR3-800? Some motherboard BIOS' and such (CPUz does this too) report DDR3-1600 as 800MHz because the clock frequency of DDR memory (excluding GDDR5) is half of it's transfer rate, 1600MT/s, and memory manufacturers and such simply call it as 1600MHz to make it easier to understand.

If you mean lowering DDR3-1600 to DDR3-800 (actual frequency is now 400MHz and transfer rate is now 800MT/s), then don't do that. Like nna2 said, that would be detrimental to performance regardless of the timings because the bandwidth would then be insufficient.
By 800MHz, do you mean DDR3-1600, or DDR3-800? Some motherboard BIOS' and such (CPUz does this too) report DDR3-1600 as 800MHz because the clock frequency of DDR memory (excluding GDDR5) is half of it's transfer rate, 1600MT/s, and memory manufacturers and such simply call it as 1600MHz to make it easier to understand.

If you mean lowering DDR3-1600 to DDR3-800 (actual frequency is now 400MHz and transfer rate is now 800MT/s), then don't do that. Like nna2 said, that would be detrimental to performance regardless of the timings because the bandwidth would then be insufficient.
 
Solution
Running memory outside of recommended settings is often a bad idea unless you know exactly what you are doing. It's worth mentioning that most DRAM modules have profiles for several JEDEC standard settings and some modules have additional high performance profiles available which can require overclocking the memory controller.

Many monitoring programs such as CPU-Z, CPUID and HWInfo32/64 can read the profiles stored on each memory module and tell you what each one is capable of. I personally recommend HWInfo64 but it can be a bit hard to read
 
+1 ;)
 
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