Ddr3 RAM not working correctly

[beamed24]

Hello All,

So I have a question.....

I have 4 sticks of Corsair XMS3 DHX 240-Pin DDR3 SDRAM DDR3 1600 (2gb each)

When I run CPU-Z, it says that one of my RAM sticks has a different part number than the other three. Also, I sometimes get an error in memtest86 version 2.11

Anybody have any idea as to why the single stick shows up with a different part number? The casing says it is the same part, and they came in packages of two, so I am clueless.

 

[gamerk316]

Probably a higher model stick that failed quality testing, and was simply downclocked a bit. If you get a memtest error, I'd just get a replacement.