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Ripjaws 1600 or 1333? Save or spend $25?

A

Atls

Member
I was looking at RAM I am going to buy, and I came across these two in particular: My question is, should I go with the 1600 models, or go with the 1333 and save $25? Note they are exactly the same, only difference being speed.

G.Skill Ripjaws 4GB 1333

G.Skill Ripjaws 4GB 1600

Oh yeah, I noticed the 1333 model has lower timings. So anyways, which one should I ultimately go with?

Specs:
i5
XFX 4890
Gigabyte UD3R P55
 
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n7 said:
Yup, that kit linked above is exactly the one i'd get too.
Click to expand...

What's the difference between these?
http://www.newegg.com/Product/Produc...82E16820231279

The only difference I see is 7-8-7-24 vs. 7-7-7-24.
They're still both CAS 7. How important is the second number in determining memory performance?

It certainly seems a bit foolish to pay an extra $45 today...
Why have people been willing to pay an extra $25 for the other set when they're both CAS 7?
There are 28 reviews! of the more expensive one and there's only 3 reviews for the less expensive one. 😕
 
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lothar said:
What's the difference between these?
http://www.newegg.com/Product/Produc...82E16820231279

The only difference I see is 7-8-7-24 vs. 7-7-7-24.
They're still both CAS 7. How important is the second number in determining memory performance?

It certainly seems a bit foolish to pay an extra $45 today...
Why have people been willing to pay an extra $25 for the other set when they're both CAS 7?
There are 28 reviews! of the more expensive one and there's only 3 reviews for the less expensive one. 😕
Click to expand...

One on sale; the other not?

The kit w/ tRCD @ 7 (instead of 8) is slightly higher binned, & most likely will OC a bit better.

But definitely i wouldn't be paying much more for that.
 
n7 said:
One on sale; the other not?

The kit w/ tRCD @ 7 (instead of 8) is slightly higher binned, & most likely will OC a bit better.

But definitely i wouldn't be paying much more for that.
Click to expand...

Even if it wasn't on sale I still don't see any benefit in paying an extra $25 for the other kit.
 
Atls said:
Oh yeah, I noticed the 1333 model has lower timings. So anyways, which one should I ultimately go with?

Specs:
i5
XFX 4890
Gigabyte UD3R P55
Click to expand...

Are you planning to overclock? With an i5 750 you will not be able to run RAM at 1600 without changing your bclk, which also affects your CPU. Unless something has changed in Gigabyte's BIOS settings, your max memory multiplier will be 10x. So natively, without OC, your RAM will run at 133 x 10 = 1333. (With an i7 860, there is an option to select 12x.) If you are planning to OC, you could hit 1600 and those sticks might give you some extra headroom.

Outside of that, there is a balance between latency and speed. I suggest reading these 2 articles:
http://www.tomshardware.com/reviews/memory-scaling-i7,2325.html
http://www.anandtech.com/memory/showdoc.aspx?i=3589

The differences between each step up in RAM is often marginally noticeable, and outside of a benchmark it is difficult to say whether or not you would even notice the difference. And yet the cost difference adds up fast. The best advice I got from these forums was buy the best RAM that fits your budget, if you find yourself stretching things just to get 'better' RAM that's probably money better spent on other components.

Both of those articles were written about the i7 9xx / 1366 socket chips. But the P55 platform is still too new for there to be alot of similar articles just yet. However, there was a review recently on value RAM you may also find interesting: http://www.tomshardware.com/reviews/ddr3-4gb-p55,2462.html
 
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