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Researching Memory for new build

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January 17, 2012 4:13:11 PM

Hello all,

I am in the process of planning a new build. I was thinking of putting in 2x8(16) memory in the system so that I don't have to think about upgrading ram in a while, but I am starting to second guess that thought. The lowest case latency on that kind of set up that I am find is around 10. The 1866 is incredibly expensive, and unless my thinking is incorrect not worth getting over some 1600 memory.

How important is 7cl vs 10cl, and will I be losing out on serious speed going with the larger amount of RAM?

Proposed mother board: ASRock 990fx Extreme 4 http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Proposed CPU: AMD FX-8150 http://www.newegg.com/Product/Product.aspx?Item=N82E168...
a b } Memory
January 17, 2012 4:18:33 PM

dont bother with 1866MHz ram, go with 1333 or 1600, that will save you alot of money... in my opinion you should probaly go with 4x4 of ram to avoid incompatibility

also, the fx 8150 isnt the worst chip, but the previous generation of phenomII chips outpreform it core for core, so you may want to pick up a phII1100T 6 core before there gone
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a c 146 } Memory
January 17, 2012 4:28:50 PM

G.SKILL Ripjaws X Series 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL10D-16GBXL @ $149.99


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+ FREE GIFT: G.SKILL 4GB Micro SDHC Flash Card w/ SD Adapter Model FF-TSDG4GA-C4 (value:$6.99)

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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a c 146 } Memory
January 17, 2012 4:31:50 PM

But, u can go with CORSAIR Vengeance 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMZ16GX3M4A1600C9
$89.99
SUPPORT FOR INTEL XMP
Intel Extreme Memory Profiles (XMP) technology provides a robust, profile-based overclocking solution for novice and experienced overclockers - easily overclock your platform by selecting the predefined profile in the BIOS, or manually adjust frequency and timings to extract maximum performance from your system.


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a c 146 } Memory
January 17, 2012 4:33:58 PM

If I was u, I would save the money and go with Corsair.

U will not see any difference in the speed or performance, unless u check some benchmarks, and they are useless in real life.

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January 17, 2012 4:41:57 PM

The reason I want to go with 2 sticks as opposed to 4, is that with two I can easier upgrade to 32 gb at some unknown point in the future if I ever decide to do so. There in lay the crux of my conundrum however. Do I go with the easier upgrade option, or angle for lower case latency and forgo future upgrades? How much a gain will I realize with CL 7 over CL 9 or 10?
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a c 146 } Memory
January 17, 2012 4:47:47 PM

The reason I want to go with 2 sticks as opposed to 4, is that with two I can easier upgrade to 32 gb at some unknown point in the future if I ever decide to do so.

That's what I thought.
There in lay the crux of my conundrum however. Do I go with the easier upgrade option, or angle for lower case latency and forgo future upgrades? How much a gain will I realize with CL 7 over CL 9 or 10?

U will see the real difference in the benchmarks. Its milliseconds, we are talking about.

U can't even sneeze that fast : )
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a c 347 } Memory
January 17, 2012 5:00:30 PM

totalknowledge said:
I was thinking of putting in 2x8(16) memory in the system... The 1866 is incredibly expensive, and unless my thinking is incorrect not worth getting over some 1600 memory.

How important is 7cl vs 10cl, and will I be losing out on serious speed going with the larger amount of RAM?

Proposed mother board: ASRock 990fx Extreme 4 http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Proposed CPU: AMD FX-8150 http://www.newegg.com/Product/Product.aspx?Item=N82E168...

RAM speed is a function of both Frequency (high) and CAS Timings (low). However, as the Desity increases it's tough to find high Frequency + low CAS; this is a lithography and density issue 'now' plus a strain on the CPU's IMC. Ideally, the FX-8150 default frequency is DDR3-1866 and your MOBO offers 4XDIMM slots. If you need 16GB of RAM then the most cost efficient way is a DDR3-1866 4x4GB Set.

Q - Why 2x8GB vs 4x4GB?
Q - What's the budget for the RAM?

Q - Out of curiosity what need do you have for so much RAM? I read what you stated but it very vague. Typically its if you Render, large data (databases, image files), RAM Drive, etc. Otherwise 8GB (2x4GB) is fine for 99% of the folks now and for sometime...
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January 17, 2012 5:29:56 PM

jaquith said:
RAM speed is a function of both Frequency (high) and CAS Timings (low). However, as the Desity increases it's tough to find high Frequency + low CAS; this is a lithography and density issue 'now' plus a strain on the CPU's IMC. Ideally, the FX-8150 default frequency is DDR3-1866 and your MOBO offers 4XDIMM slots. If you need 16GB of RAM then the most cost efficient way is a DDR3-1866 4x4GB Set.

Q - Why 2x8GB vs 4x4GB?
Q - What's the budget for the RAM?

Q - Out of curiosity what need do you have for so much RAM? I read what you stated but it very vague. Typically its if you Render, large data (databases, image files), RAM Drive, etc. Otherwise 8GB (2x4GB) is fine for 99% of the folks now and for sometime...


The budget is whatever it needs to be. I know that's not the answer you were looking for, but if the best answer is to get 1833 Ram then that's what I will get. The 2x option is just to make it easier to upgrade to more memory down the road.

As for why I need so much. I don't know that I *need* that much, I am just looking for a solution that won't have me upgrading in 2 or so years. I do tend to run a Vbox a lot, and it would be nice to be able to run two vm's at the same time and still run other applications without a huge degradation in performance. That way I can create a sand box to hold a web/database server and have my development vm up on the same machine, while still using the main box to play video games and/or play youtube videos. I tend to hit the limits of my current machine quite a bit. Granted it only has 4GB of ram, but like I mention above I don't really want to upgrade again for a while.
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a c 347 } Memory
January 17, 2012 6:05:10 PM

Running AMD-V or VT-d/x then I've got my doubts about 8GB/stick and DDR3-1866 especially piecemealing two 2x8GB sets. Further, what's available now might not be later then you might be faced with a worst mix-match later.

If it were me get the 4x8GB set now, and DDR3-1600: G.SKILL Ripjaws X Series 32GB (4 x 8GB) DDR3 1600 CAS 10-10-10-30-2T @ 1.50v F3-12800CL10Q-32GBXL - http://www.newegg.com/Product/Product.aspx?Item=N82E168...

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a b } Memory
January 17, 2012 8:45:54 PM

- Dual Channel DDR3 memory technology
- 4 x DDR3 DIMM slots
- Supports DDR3 2100(OC)/1866/1600/1333/1066/800 non-ECC, un-buffered memory
- Max. capacity of system memory: 32GB*
tooken from the asrock website

well i was wrong with incompatibility...

the guy above, that is quite high latency... unfortunatly the corsair website hates me... and boots me out whenever i try to refine my search...
i cant find any other company's that put out 8gb dimms :( 
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