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What is Intel XMP

post #1 of 4
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What is Intel XMP and how does this impact on the performance of the PC in games and in general?
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post #2 of 4
Intel XMP is just a profile stored on your memory that you can use to automatically select the optimal settings for your RAM. If you're using DDR3 memory it will default to 1333MHz, 1.5V and I can't remember the timings off the top of my head. However, most kits are rated for at least 1600MHz, enabling XMP will set it to that rating.
http://www2.corsair.com/training/xmpandmemperf/index.htm
Pretty cool little presentation.
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post #3 of 4
The advertised speed rating for "performance" memory (about any memory with heatsinks on it) usually refers to the XMP profile, which can be 20% to 60% faster than the JEDEC profile. That's not to say you can get anywhere close to 60% higher overall computer speed by using the XMP settings, and Anandtech found a best-case improvement of just 21% in frame rates with memory that was 80% faster: review

Because XMP profiles are determined by module makers, not chip makers, the standards for them aren't as strict. After all if chip makers thought their chips would be reliable at the faster XMP timings they'd rate their chips for those speeds to get higher prices for them. Most module makers don't even have the same expensive test equipment that the chip makers use. However many experts disagree with my contention that XMP is less reliable, although they're not from the chip business.
Edited by larymoencurly - 2/9/13 at 9:13pm
post #4 of 4
Intel XMP = women PM'X smile.gif only headache

I'm just trolling under 2" of snow smile.gif
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