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Difference in ram speeds of these memory sticks?

post #1 of 17
Thread Starter 
Hey, i used to have the cheapest 4x4gb sticks of Kingston Value R 1333mhz

Andhave now exhanged them for:

Kingston DDR3 HyperX 1600 MHz 16GB Black
CL10, 2x8GB, XMP HyperX Black Series The Gathering Edition

And since i now also got dual channel with them, how much will the speed then have increased? And in what areas has the speed improved at? Gaming, startup, program startup textureload? Or what?

Thanks in advance.
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post #2 of 17
I'd suspect you'd see a barely noticeable differences from the speed differences (ie. 1333 vs 1600), but less so since you went from two dual channels to one. (ie 4gig x 4 has two sets of dual channels but 8gig x 2 only one dual channel).
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post #3 of 17
Thread Starter 
Ok, so why do ram have different speeds like 1333, 1600, 1866, 2000 etc if they wont do much difference from eachothers?
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post #4 of 17
Long ago, in the time of DDR memory (Not DDR2 or DDR3) memory speed was important.

Older CPUs, when they wanted to move data to/from memory had small memory caches (ie the ability to store only small chunks of data in the CPU for future use). Modern CPUs (that use DDR3 for example) have multiple, large memory caches. So they don't have to waste time moving data into/out of memory. They anticipate what they will need and get much more data into the caches and ready to use. So since the data is alreaady there and ready for the CPU to use, the actual speed that it sends/recieves data from the memory (ie, memory speed) is much less important now.

That's not to say memory speed doesn't effect performance, just not as much as it used to.
The difference between DDR133 and DDR400 was very noticeable, but between DDR3 1333 and 1600 (or even 2400) it just isn't that noticeable (again, due to the better memory management of newer CPUs).

Faster memory will benchmark better because, typically, benchmark programs are very memory intensive, but in everyday use, it's just not very noticeable.

So, what does all the above mean, practically? Memory speed is mostly advertizing hype for the typical computer user.
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post #5 of 17
Thread Starter 
Haha ok tongue.gif

So after an overclock for example, when the ram has been downlocked to 600mhz, it doesnt decrease the speed? cause the cpu does that?
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post #6 of 17
It puts less stress on the memory controller of the chip. Handy if your pushing like Ln2 Coolers.

But nawh, you won't notice much difference from RAM Speeds. Its better to look at CAS Latency if anything.
 
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post #7 of 17
Quote:
Originally Posted by sonarctica View Post

Haha ok tongue.gif

So after an overclock for example, when the ram has been downlocked to 600mhz, it doesnt decrease the speed? cause the cpu does that?
Well, not exactly. You paid for 1600 so why not get it to that speed. And along the same line, overclocking is free. So why not get all the speed you can.

And, yes, throughput depends on both speed and timings.
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post #8 of 17
In fact, 1333 to 1600 is the most noticable gain, the difference from going 1600 > 1866 > 2133 are not that great. So 1600 mhz is like a threshold for gaming.
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post #9 of 17
2 sticks puts less stress on the IMC compared to quad sticks but also, less stress is useless for anything below 1866 except only when pushing for crazy OCs tongue.gif
There's practically no measurable difference
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post #10 of 17
Thread Starter 
Quote:
Originally Posted by Catscratch View Post

In fact, 1333 to 1600 is the most noticable gain, the difference from going 1600 > 1866 > 2133 are not that great. So 1600 mhz is like a threshold for gaming.

Then tell me, in what aspect can i see the difference?
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Black pearl
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