ungovernable :
Sorry, missed that post
The memory you referenced is 1.65v ram. That is the upper limit of voltage before you permanently damage your cpu.
The ram should operate properly using 1.5v, but will probably do so at a lower speed than 1600. That is not a biggie for performance.
So if i understand correctly, i will not be able to run this memory kit at 1600mhz because it could damage my CPU ?
So i guess i should also buy a new memory kit...
i have read that Sandy Bridge is incompatible with corsair memory, so i'm thinking of getting that :
http://www.newegg.ca/Product/Product.aspx?Item=N82E16820231416
It will also work with my motherboard and CPU ?
1.65v ram should be OK, I just wanted to warn you that anything higher is a risk.
The current Intel nehalem and sandy bridge cpu's have an excellent integrated ram controller. It is able to keep the cpu fed with data from any speed ram.
The difference in real application performance or FPS between the fastest and slowest ram is on the order of 1-3%.
Synthetic benchmark differences will be impressive, but are largely irrelevant in the real world.
Fancy heat spreaders are mostly marketing too.
Only if you are seeking record level overclocks should you consider faster ram or better latencies.
Read this Anandtech article on memory scaling:
http://www.anandtech.com/show/4503/sandy-bridge-memory-scaling-choosing-the-best-ddr3/1
---------------bottom line------------
DDR3 1600 is the sweet spot.
You want documented ram compatibility. If you should ever have a problem, you want supported ram.
Otherwise, you risk a finger pointing battle between the ram and motherboard support sites, claiming "not my problem".
One place to check is your motherboards web site.
Look for the ram QVL list. It lists all of the ram kits that have been tested with that particular motherboard.
Sometimes the QVL list is not updated after the motherboard is released.
For more current info, go to a ram vendor's web site and access their ram selection configurator.
Enter your motherboard, and you will get a list of compatible ram kits.
While today's motherboards are more tolerant of different ram, it makes sense to buy ram that is known to work and is supported.
As to mixed ram:
Ram is sold in kits for a reason.
Ram from the same vendor and part number can be made up of differing manufacturing components over time.
Some motherboards can be very sensitive to this.
Although, I think the problem has lessened with the newer Intel chipsets. Still,
it is safer to get what you need in one kit.