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What ram to buy?

Last response: in Memory
July 12, 2011 8:00:49 PM

Im orering the parts for my first build today, I thought ram was ram, im somewhat confused I understand I can use the 1600 ddr3 which is what I want, but I cant figure out the x-x-x-xx numbers I would like a good ram for the following mb and processor, im gonna buy 2x4gb going to be used for a gaming machine if that matters in choice

Asrock p67 extreme 4

i5 2500k processor

More about : ram buy

July 12, 2011 8:19:40 PM

Those numbers are timings, the lower the better. For 1600 ram you should get 9 or less - also called CL9.
The sandy bridge motherboards need 1.5v ram or lower as i recall.

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a c 347 } Memory
July 12, 2011 8:22:15 PM

The "x-x-x-xx" refers to the CAS Timings, and for Gaming 1600 CAS 8-8-8-24 or 1600 9-9-9-24 is nearly identical, but lower CAS = Faster and higher Frequency = Faster so High Frequency with Low CAS is the 'fastest'. The LGA 1155, other than some off the wall tests e.g. Multi-Threading tests, the ideal is DDR3 1600 CAS 8 or CAS 9 @ 1.50v for the Sandy Bridge.

My personal favorites are $80 G.SKILL Ripjaws X Series 8GB (2 x 4GB) DDR3 1600 Model F3-12800CL8D-8GBXM 8-8-8-24-2N ->

Problem, the $60 G.SKILL Ripjaws X Series 8GB (2 x 4GB) DDR3 1600 Model F3-12800CL9D-8GBXL is just as good. Problem 2 Kits of F3-12800CL9D-8GBXL (4x4GB) often end-up running at 1333 MHz.

Therefore, if 4x4GB might come down the line then IMO $75 Corsair CMZ8GX3M2A1600C9B makes a good 2 sets of 2x4GB ->

Nice article ->
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July 12, 2011 8:36:19 PM

Thanks a ton guys for the fast responses :) 
July 13, 2011 1:24:38 AM

Best answer selected by Aces0vr8s.