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Notice a difference CL7 v CL6

Tags:
  • Memory
  • DDR3
  • G.SKILL
  • Product
Last response: in Memory
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February 21, 2011 8:46:58 PM

Im about to buy 6 or 8GB of ram, but i have noticed the same set, but one with a slightly faster clock speed.

G.Skill 6GB (3 x 2048mb) DDR3 1600 (PC12800 - F3-12800CL6T-6GBPI) $149
G.Skill 6GB (3 x 2048mb) DDR3 1600 (PC12800 - F3-12800CL7T-6GBPI) $122
OR
Corsair 8GB (2 x 4096mb) DDR3 1600 (PC12800 - CMX8GX3M2A1600C9) $124
G.Skill 8GB (2 x 4096mb) DDR3 1600 Ripjaws-X (PC12800 - F3-12800CL9D-8GBXL) $128

Will you notice a difference?
What would you buy?

More about : notice difference cl7 cl6

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a b } Memory
February 21, 2011 9:18:11 PM

Does your motherboard/CPU support dual channel RAM or triple channel?

Now, between the CL6 and CL7 G.Skill RAM there probably isn't a huge difference in performance, although the CL6 RAM may overclock slightly better. Even then that shouldn't be a big deal because both sets are rated up to 1600MHz as is, and using the lowest possible memory:bus ratios neither set will hold back your max BCLK/bus speeds.
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a b } Memory
February 21, 2011 9:22:35 PM

3 x whatever GB for 1366 boards

2 x whatever GB for 1155/1156 boards

As for what I'd buy, I can only speak for myself. I started using GSkill memory when they were cheaper than the established brands. Over time and after some disappointments, the prices were the same so I stopped buying them.

You have left ou the most important info, that being what you are doing .... CAS latency impacts will change depending on what you are doing. For my needs, I always buy the lowest CAS I can afford.

1366 based systems

At 6GB (3 x 2GB), the best performance buy is the Mushkin Radioactives. The cheapest set I'd buy would be these CAS 9's from Corsair at $70

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

But when ya can get CAS 6 from Mushkin for an extra $20, it's a no brainer

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

At 12GB ya have to decide between 2 sets of the above or one set of 3 x 4GB. The low cost CAS 9 option is $155. Given CAS 8 is the only step up, I'd get two sets of the Radioactive CAS 6 modules for only $25 more.

1155/1156 based systems

At 4GB (2 x 2GB), the best performance buy again is the Mushkin Radioactives. The cheapest set I'd buy would be these CAS 9's from Corsair at $50 ($40 after $10 MIR)

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

But when ya can get CAS 6 from Mushkin for $78, to me, it's a no brainer

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

At 8GB ya again have to decide between 2 sets of the above or one set of 2 x 4GB. The low cost CAS 9 option $ @ 3 x 4GB is $100.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Ya can step up to CAS 7 for $155

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

For $1 more you can get two sets of the 2 x 2Gb Radiocatives at CAS 6 making this choice kind of a toss up.
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February 21, 2011 9:42:59 PM

Thank you jack i wasn't aware of the triple channel would not fit my motherboard.

8GB it is

Oh and it was for a p67 Chipset, But i live in Australia so so you often have to put 10-20% more on top of the American price.
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a b } Memory
February 21, 2011 9:54:08 PM

Keep in mind that since you have a Sandy Bridge CPU you need to get RAM with voltages below 1.58v. That is because the Sandy Bridge CPU's Integrated Memory Controller doesn't handle high memory voltages well. There was a story shortly after the Sandy Bridge launch chronicling an alarming number of Sandy Bridge chips dying from excessive CPU voltage, but also dying from RAM voltages that were too high.

With that said your RAM voltages have to be fairly high in order to cause problems, but to be safe I'd stick with modules that can run below the 1.58v level that has been mentioned as "safe".
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February 21, 2011 10:04:46 PM

I have read up on the G.skill website that they have made a few Models (Ripjaw-X)
Specially designed for 1155 CPU's at 1.5V

I will probably go with them, as G.Skill is still a decent price for power contender over here.
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a b } Memory
February 21, 2011 10:43:58 PM

Yep, I use 12GB (one 8GB kit and one 4GB kit) of their Ripjaws X DDR3-1600 CL9 RAM in my Sandy Bridge system with no problems.
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a c 152 } Memory
February 22, 2011 5:24:08 AM

^ Good RAM.
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February 22, 2011 5:43:04 AM

Best answer selected by pipinhot2.
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February 23, 2012 7:26:47 PM

This topic has been closed by Mousemonkey
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