What ram is better ?

Solution
The third kit is rated for higher speeds than the other two. Whether it retains the advantage if you overclock is hard to know for certain, but I'd say it's highly likely.

But if you're looking for bang for the buck, the price matters too. I don't think you get much of an advantage from the $145 RAM. I'd recommend either of the cheaper kits when it comes to performance per dollar.
The third kit is rated for higher speeds than the other two. Whether it retains the advantage if you overclock is hard to know for certain, but I'd say it's highly likely.

But if you're looking for bang for the buck, the price matters too. I don't think you get much of an advantage from the $145 RAM. I'd recommend either of the cheaper kits when it comes to performance per dollar.
 
Solution

chrisaus87

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May 31, 2013
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Thanks for the info , i am going to do something like this when i can and make my own rad box and overclock the cpu and my 7970 :) hopefully can get a stable 5 keen for water cooling. ill probably go with the 3rd kit its still within my price range.

 

spawnkiller

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Jan 23, 2013
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on the AMD side, the faster the better (opposed to Intel faster than 1600 CL9 that don't make any difference in real world)

i wouls suggest (if you can afford it) the Corsair Dominator.

If you can't afford, both of the other kit are the same as 1866 CL9 is equivalent to 1600 CL8 (i would pick the cheapest one so the G.Skill Ripjaw)
 

Cheapest one. The extra speed is hardly noticeable. And most applications are NOT sensitive to RAM speed so it's even more useless. The DOMINATOR series by Corsair is a total waste of money.
 

1866 CL9 is faster than 1600 CL8. 16.6% more bandwidth, 3.5% lower latency.
 

spawnkiller

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Jan 23, 2013
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on what kind of config, cause i've tested with a 3770k Oc @ 4.83Ghz and 1600CL8 and 1866CL9 we're like below 5% difference in both bandwith and latency (while 2133 crush both and by far !!)
 

On any config that can keep up with the memory. It's just a matter of doing the math.