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DDR3 1333 or DDR3 1600 for Phenom II 1090T?

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neo668

Member
Joined
Apr 10, 2011
Location
Hong Kong
Hello all.

I'm helping my friend upgrade his system and since his mobo chipset is almost the same as mine I thought I'd experiment a bit.

I want to see if my unknown brand - Magic Pro - is any match for the mighty Asus (M4A88TD-V EVO/USB3). The Magic Pro has an AMD 890GX/SB850 chipset while the Asus has an AMD 880G/SB850. I'll be fitting out both our systems with almost identical components.

I'll be installing a 1090T in both systems. My question is about ram. Can I use DDR3 1600 ram for our systems? I know that AMD only supports DDR3 1333. The specs of the motherboards say the following:

Asus - DDR3 2000(O.C.)/1333/1066 Hz ECC, Non-ECC, Un-buffered Memory.

Magic Pro - DDR3 DIMM slots, up to DDR3 1333/1600 (OC) memory setting.

I'm thinking of getting 8GB of G.Skill RipjawsX F3-12800CL9D-8GBXM (4GB x 2). G.Skill says that the RipjawsX were specifically made for Sandy Bridge. Will The RipjawsX work on our AMD systems?

Thank you.
 
Should work great.
The only 1600mhz ram I've run into that had issues was cas6 stuff, some PhII cpus dont like 1600mhz at less than cas7.
 
Thanks Bob.

I understand that getting 1600 instead of the supported 1333 is to allow overclocking.
 
Doesn't really matter either way for OCing, the 1090t has an unlocked multiplier so you aren't forced to change HTRef (and hence ram) speeds at all.
 
Thanks again Bob. If that's the case I'll just get the 1333 and save the difference.

Much appreciated.
 
For performance, AMD systems typically prefer the 1333 flavor w/ low timings. While DDR3-1600 usually works well with the Thubans (they have a most robust IMC), I'd rather stick with 1333 and pay for some CL7 stuff. My ripjaws work great!
Ultimately, are you going to notice it from day to day? Probably not..
 
If you can find some decently cheap 1600-7-7-7 ram, that's what I'd go for. That should work fine with your thuban, and will definitely beat 1333-7-7-7 (now 1333-6-6-6 on the other hand, maybe not).

Really though, the odds of you noticing the difference between 1066-9-9-9 ram and 1866-7-7-7 ram are rather minimal.
Personally I'd go for 1333-7-7-7, 1600-8-8-8, or 1600-7-7-7, or something along those lines. (To be 100% honest, I'm currently running a 2000-9-11-9 kit at 1800-8-9-9 on my 965BE while I wait for a 2000-8-8-8 kit to show up. Do as I say not as I do, or something. Benching is different :rock:)
 
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