System Memory Bandwidth Performance

System Memory Bandwidth Performance

As explained - Intel has a couple of certified partners for memory to get some sweet XMP (Xtreme Memory Profiles) 2.0 profiles going. We test memory both at the default SPD/JEDEC 2133 MHz for DDR4 and then with XMP 2.0 enabled at 3600 MHz.

Default 2133 MHz 

What you will notice are pretty standard dual-channel read and write numbers. These are the default SPD timings. So if you do nothing and do not activate your XMP profile in the BIOS, this is what you get. You are basically hovering in the 30~32 GB/s range. Things, however, will get more crazy quickly, behold the DIMMs below:

The DDR4 memory kit is rated at 3600 MHz. That, my friends, is configured by enabling XMP in the BIOS and that's it. All of a sudden, the memory bandwidth numbers will change fairly dramatically:
  

Above - Default clock frequency on CPU / 3600 MHz on DDR4

Hello, 50K GB/sec ranges. So if you like to go a little crazier on the actual memory bandwidth, purchase some nice compatible faster XMP ready memory and enable that XMP profile in the BIOS. Compared to the 3000 MHz kit of this memory, the difference was like 20 bucks. However, faster memory is relative though, your overall PC experience will not be much faster, yet memory intensive applications like, say, transcoding or a CPU limited game, that's where you could see little gains.