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2133MHz 8-10-8-24 vs 1600MHz 6-7-5-20 - Page 3

post #21 of 29
Quote:
Originally Posted by alancsalt View Post

I think what fTw 420 is saying is that in benchmarks, faster ram shows more gains than tight timings. Better physics scores in 3dmark11 for example.
(For other purposes you may not notice the difference.)

Absolutely, but generally speaking when benchmarking for most users you'll be using you absolute best settings. And the higher OC the more you'll notice that extra speed from the memory.
 
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post #22 of 29
Quote:
Originally Posted by Senator View Post

No.
Unless something new has come out you see no performance increase (less than 2%) when overclocking RAM above 1600mhz with either Sandy or Ivy. It could be I'm mistaken, but proof please?
The jump in performance for Sandy/Ivy comes going from 1333 to 1600. Anything above that is subject to diminished returns. If you want to see a better score in a synthetic benchmark, go for it, but games don't utilize the extra RAM bandwidth (with few exceptions).

It's true that there is little point in buying memory faster than 1600 for Sandy/Ivy, but if you already have 1600 RAM that will also do 2133 there's certainly no reason not to increase the speed. Xbits' testing showed better gains from speed versus timings, so pushing to 2133 is better than keeping it at 1600 with low timings. It is not meaningful performance, but it's free performance, so why not?
Quote:
Thus, memory timings have indeed become a rather insignificant parameter for today’s computers. When choosing DDR3 SDRAM for an Ivy Bridge processor, you should consider its clock rate in the first place whereas a low CAS Latency and other timings are in fact unimportant. The same goes for tweaking and overclocking: you should first focus on increasing the clock rate of your DDR3 SDRAM and only then minimize its latencies if you want to.

http://www.xbitlabs.com/articles/memory/display/ivy-bridge-ddr3.html
Edited by Forceman - 12/3/12 at 5:40pm
post #23 of 29
What is all this debate about with timings vs speed. the timings are about the same. only ones that are a little longer is the third one. otherwise the biggest difference is the Mhz is a bit different. otherwise though the timings are more or less the same unless they changed the way they rate timings.
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post #24 of 29
2133 for sure. Sandy and Ivy love the bandwidth more then anything else.
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post #25 of 29
Quote:
Originally Posted by rx7speed View Post

What is all this debate about with timings vs speed. the timings are about the same. only ones that are a little longer is the third one. otherwise the biggest difference is the Mhz is a bit different. otherwise though the timings are more or less the same unless they changed the way they rate timings.

How is 8-10-8-24 the same as 6-7-5-20? I don't understand how you could say they are the same. To me the second set are tighter timings.
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post #26 of 29
Quote:
Originally Posted by alancsalt View Post

I think what fTw 420 is saying is that in benchmarks, faster ram shows more gains than tight timings. Better physics scores in 3dmark11 for example.
(For other purposes you may not notice the difference.)

You mean like what I said in the very beginning of the thread? biggrin.gif

Anyway, OP, get the 2133 if the price difference is negligible, so that you don't change RAM again when Intel's next architecture hits the market in a year or two.
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post #27 of 29
Thread Starter 
Quote:
Originally Posted by ronnin426850 View Post

You mean like what I said in the very beginning of the thread? biggrin.gif
Anyway, OP, get the 2133 if the price difference is negligible, so that you don't change RAM again when Intel's next architecture hits the market in a year or two.

I already have the sticks, it is in my signature tongue.gif

Lately, I don't have much time to test but I will post some benchies for yall!

I will test 4.2GHz (daily speed for browsing and light gaming) & 4.9GHz the highest speed under 1.385v the so called "safe" voltage with 1600 vs 2133.

Which benchie do you guys propose?
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post #28 of 29
Quote:
Originally Posted by alancsalt View Post

How is 8-10-8-24 the same as 6-7-5-20? I don't understand how you could say they are the same. To me the second set are tighter timings.

From what I understand timings are based upon clock cycles. the number represents how many clock cycles pass for a given timing function to happen. The number by itself doesn't specify how long it takes to do something but that number needs to be taken WITH the clock speed to factor in how long a specific thing needs to happen. example a timing of 4 at 400mhz would take just as long as a timing of 8 at 800mhz which in turn takes just as a timing of 32 at 3200mhz. To take that a step further a timing of lets say 4 at 800mhz is actually a slower timing then 4 at 1600mhz. It's even a slower timing then 5 at 1600mhz.
double the clock cycle and keep the timing number the same it still takes the same amount of clock cycles but the clock cycles complete in half the time hence the timing is faster.

so with this the timings of 8-10-8-24 at 2133 would be like running timings of 6-7.5-6-18 at 1600mhz. so the timings aren't that different but the clock cycles you have to get that bandwidth through has increased by quite a bit.

At least that is how I understand the tmings is the number is based upon how many clock cycles it takes for a task. Though granted been away from computers for a while so things could of changed or I could of misunderstood how it works.
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post #29 of 29
Quote:
Originally Posted by rx7speed View Post

From what I understand timings are based upon clock cycles. the number represents how many clock cycles pass for a given timing function to happen. The number by itself doesn't specify how long it takes to do something but that number needs to be taken WITH the clock speed to factor in how long a specific thing needs to happen. example a timing of 4 at 400mhz would take just as long as a timing of 8 at 800mhz which in turn takes just as a timing of 32 at 3200mhz. To take that a step further a timing of lets say 4 at 800mhz is actually a slower timing then 4 at 1600mhz. It's even a slower timing then 5 at 1600mhz.
double the clock cycle and keep the timing number the same it still takes the same amount of clock cycles but the clock cycles complete in half the time hence the timing is faster.
so with this the timings of 8-10-8-24 at 2133 would be like running timings of 6-7.5-6-18 at 1600mhz. so the timings aren't that different but the clock cycles you have to get that bandwidth through has increased by quite a bit.
At least that is how I understand the tmings is the number is based upon how many clock cycles it takes for a task. Though granted been away from computers for a while so things could of changed or I could of misunderstood how it works.

Ah, gotcha.thumb.gif
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