Corsair Vengeance 8gb 1600 low profile (CAS 9, 1600 mhz, DDR3, 1.5V) http://www.newegg.com/Product/Product.aspx?Item=20-233-186
It is not on the official CPU support list for the AsRock Z68 Extreme3 Gen3:http://www.asrock.com/mb/memory.asp?Model=Z68%20Extreme3%20Gen3
Are they compatible?
Yes it is compatible, it just mean that the RAM was not certified(Corsair didn't pay for the cert. process). It was also released after the mobo was. And nobody has all the RAM certified, as they make too many to list them all
I recommend CORSAIR Vengeance 99% of the time, quality RAM
and low profile
with XMP profile
. And if u will get an aftermarket CPU cooler, low profile is the worry free remedy with perfect fit with any large cooler.
CORSAIR Vengeance 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600http://www.newegg.com/Product/Product.aspx?Item=N82E16820233196
Vengeance Low Profile heat spreaders have a reduced height of 1.03" (26.25mm). They're designed for high-performance systems with extra-large CPU coolers, small form factor system builds, or any other space-constrained application where standard Vengeance memory might not fit.