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ASUS M5A99X Evo r2.0 Memory Help

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September 11, 2013 2:18:10 PM

I haven't upgraded my personal machines in several years. I'm still running a single core P4 in one and an Athlon 64-X2 4800+ in another. I'm looking to jump up to more current technology, and have pretty well decided on the Asus M5A99x Evo R2.0 MB. I expect to pair it with either an FX-8350 or an FX-8320, depending upon the price difference when I finally get everything else selected.

I'm having trouble choosing the appropriate RAM for this setup, as the timings and speeds are very different from my old rigs. I'm looking to start with 2x4GB DIMMs. I don't expect to overclock, BUT I would like to get the best possible performance from the components I choose. Can you folks assist me in picking out memory that is fast, stable, and doesn't cost a small fortune? My funds are pretty limited and I'm stretching to get the MB and CPU. That being said, I'd rather spend a few extra dollars now on stable RAM than to have to fight it later. Thank you so much for the assistance.

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a b Ĉ ASUS
a c 80 } Memory
September 11, 2013 3:34:49 PM

You can pick from CORSAIR Vengeance, G.SKILL Ripjaws Series, Kingston HyperX, 2X4GB DDR31600MHz CL8 or CL9 or DDR3 1866 MHzCL9 or CL10 kit.
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September 11, 2013 3:47:32 PM

Terrific. That is very, very helpful cin19. I appreciate the information.
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September 12, 2013 7:34:21 AM

cin19 said:
You can pick from CORSAIR Vengeance, G.SKILL Ripjaws Series, Kingston HyperX, 2X4GB DDR31600MHz CL8 or CL9 or DDR3 1866 MHzCL9 or CL10 kit.


If you don't mind, I have a follow-up question. When I look at the RAM timings, I see things like 9-9-9-24 and 10-10-10-32. As I am not planning to overclock the cpu or memory, do I need to be concerned about these additional numbers? I imagine that lower is faster across the board, but my understanding is that the first number is the CL and thus the most important. Would it be correct to think that 9-9-9-24 would be faster - and thus more desirable - than 9-9-9-27?

Thanks again!
Sherrick
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a b Ĉ ASUS
a c 80 } Memory
September 12, 2013 8:49:17 AM

You are right, the 24 is better but you will not notice any different, and sometime if your PC can't boot on the 24 you can set to 27. Usually the tRAS is like the total of the CAS, tRCD, and tRP combined like the 9-9-9-27.
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September 12, 2013 8:55:56 AM

cin19 said:
You are right, the 24 is better but you will not notice any different, and sometime if your PC can't boot on the 24 you can set to 27. Usually the tRAS is like the total of the CAS, tRCD, and tRP combined like the 9-9-9-27.


You've been very helpful. Thank you so much. Like I said, it's been a loooong time since I rebuilt any of my systems. I'm looking forward to a little tech adventure.
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September 14, 2013 7:20:34 AM

cin19 said:
You are right, the 24 is better but you will not notice any different, and sometime if your PC can't boot on the 24 you can set to 27. Usually the tRAS is like the total of the CAS, tRCD, and tRP combined like the 9-9-9-27.


I have another follow up question. I've stumbled into a good price on some Kingston HyperX Beast RAM for a good price. It is rated at 2133MHz, but the CL is 11. Is that slower latency an issue? I like the idea of the 2133MHz chips as a bit of "future proofing," but I don't want the higher CL to reduce my performance significantly now. The CPU I'm looking at supports native 1866MHz without an overclock as I understand it. In fact, most of the 2133MHz RAM I find - and can afford - has a CL of 11. Not sure if I should go for the good price on these 2133 modules or drop down to the 1866MHz with the lower CL. Any help on this?

Thanks again.
Sherrick
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a b Ĉ ASUS
a c 80 } Memory
September 14, 2013 11:55:16 AM

For the RAM, if it is 1866Mhz then cl10 is good, and 2133Mhz Cl11 is good, go for it if you found the good price. But if the 1866 one is lot more cheaper even it is $20 less, you can buy it and OC to 2133Mhz if you want, because it is easy to do oc from 1866MHz to 2133Mhz.
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a c 787 Ĉ ASUS
a c 1942 } Memory
September 14, 2013 1:16:58 PM

Performance DRAM normally is considered from 1600/7 1866/8 2133/9 2400/10
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