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AMD Bulldozer FX8150 - DDR3 1600MHz versus 1866MHz Memory

Posted: Thu Oct 20, 2011 8:31 am
by Apoptosis
Dan asked me what the memory bandwidth looks like on the AMD FX-8150 'Bulldozer' CPU, so I did some quick tests for him this morning on the test bed that I have up and running.
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Running at 1600MHz w/ CL9 timings and a 1T command rate I was able to reach 17.9GB/s
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When the memory bumped up to 1866MHz w/ identical CL9 timings and a 1T command rate I was able to reach 19.3GB/s. This is an 8% performance increase in memory bandwidth by going up just 266Mhz.