What kind of reported main memory bandwidths do you get on your quad-channel systems... ?
Here I'm seeing memtest86 (v5.1.0) bandwidth of only ~17 GB/s on a 3.9 GHz i7-4820K, Intel X79 chipset, UEFI, speedstep is off, memory is four 4GB DDR3 DIMMs (16GB total) with identical 9-9-9-24-2N timings running at 1600 MHz. The motherboard has 8 DIMM slots. With single DIMMs in each memory channel (quad-channel mode) the memtest86 bandwidth is ~17 GB/s. Isn't that very slow? I also tested putting two DIMMs in just two channels (dual-channel mode) and the reported bandwidth remained about ~17 GB/s. I was expecting it to be half...
Is it possible that memtest86 v5.1.0 UEFI can generally not reach over ~20 GB/s on Core i7?
Here I'm seeing memtest86 (v5.1.0) bandwidth of only ~17 GB/s on a 3.9 GHz i7-4820K, Intel X79 chipset, UEFI, speedstep is off, memory is four 4GB DDR3 DIMMs (16GB total) with identical 9-9-9-24-2N timings running at 1600 MHz. The motherboard has 8 DIMM slots. With single DIMMs in each memory channel (quad-channel mode) the memtest86 bandwidth is ~17 GB/s. Isn't that very slow? I also tested putting two DIMMs in just two channels (dual-channel mode) and the reported bandwidth remained about ~17 GB/s. I was expecting it to be half...
Is it possible that memtest86 v5.1.0 UEFI can generally not reach over ~20 GB/s on Core i7?
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