It's hard to play it safe when it comes to RAM compatibility and these 875/865 boards. There's all kinds of memory glitches with these chipsets. That Kingston should work just finebut unfortunately there's no guarantee, and with te 875PBZ you don't even have the option to give it a little more Vdimm to help stabilize it. Intel has a memory compatibility chart for the 875PBZ, look at that for a list of tested RAM. That's probably your best guarantee of choosing the correct RAM. I recommend running Memtest86 to check your RAM & MoBo before you even try and load the OS.