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CPU and RAM Compatibility

Hello everyone, I am working on my first build and I am a little confused when it comes to choosing RAM for my specific CPU.

The CPU I'm going with is the i7 2600k

Now Intel's site lists that the processor accepts memory type DDR3- 1066/1333, but on this website, in other posts I've seen different memory types recommended for this processor.

As you can see that post recommends RAM at higher frequencies than what Intel lists as compatible.


I am looking at building a high end gaming system and need help selecting the best, top-of-the-line RAM for my system. What do you guys recommend?
5 answers Last reply Best Answer
More about compatibility
  1. look at the ram supported by the motherboard you choose, not the processor. Most motherboards support 1333 or 1600, and there is only ~5-10% performance difference between the 2.
  2. Ok so with this mobo (ASUS Maximus IV Extreme-Z), Newegg says it accepts DR3 2200(O.C.)/1866(O.C.)/1600/1333. You're saying that the 2200(O.C.) would work with the CPU just fine?
  3. Best answer
    if your cpu supports ddr3 1333/1600. its likely your motherboard can support much higher frequencies. but 1s you go faster than the cpu 1600 your unlikley to see any performance gains in real world apps. i found its best just to use the fastest ram your cpu supports. which as it stands is 1600
    the real difference can be found in latencies, though you can buy ddr3 1600 c9 very cheaply.
    but ddr3 160 c7 is very expensive...
    if you buy 2200+ c9 ram which costs a little more than 1600 c9 but not as expensive as 1600 c7, you can then run that at 1600 c7 and save a few bux.
    not only that the ram will be more efficient and boost system performance by a good 5-7 percent. across the board.
  4. Best answer selected by austindk.
  5. Ah ok thank you. That makes sense. One more question though...Intel lists the compatibility at ddr3 1066/1333. Would you still recommend the 1600 or down to the 1333?
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