Which Memtest to use with Haswell CPU?

I have a Core i5 4670K Haswell processor running on a Z87X-UD3H motherboard and would like to enable XMP.

I would like to know which memtest I should use to check for any errors once XMP is enabled. There are two options on this site and I don't really know the difference between them:

Memtest86+ 5.01
Memtest86 Free Edition 5.00

I am leaning towards Memtest86+ but it says it only has preliminary support for Haswell. Would that be a problem?

 

Everything I've read says that either of the two you mention are the best freeware memory testers. One site says that Memtest86+ is the best. There is, of course, Windows built-in memory test if you want a second opinion after running either Memtest. Also, you're testing the RAM and not the CPU so, Haswell shouldn't make a difference.

 

I agree. Go with Memtest86+ and it should matter what processor you have installed.