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[TS] DDR4 4000mhz RAM increases FPS in games by 10-19% over DDR4 2133/DDR3 1600 - Page 22

post #211 of 396
cant find 4000mhz 2 x 8gb kit in the UK though..
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post #212 of 396
Quote:
Originally Posted by ZealotKi11er View Post

This seems to take effect in CPU limited games.

CPU limiting isn't necessarily ram based. CPU limiting can be driver, windows configuration, cheap hard drive, incorrectly configured bus, Facebook apps, skype running... all sorts of garbage. I've been to some websites that cause CPU limiting in other tasks.

The problem is that it has been shown before and often that RAM speed changes alone don't make a damned bit of difference in a game's performance if you have sufficient ram for the game to operate to begin with. So I doubt upgrading your 8gb machine from 3200 to 4000 is really gonna make as much a difference as upgrading from 8gb to 32gb where windows can keep itself out of the way and you can disable the whole pagefile which would be flailing around like an early deployed drag race parachute after the upgrade.

The ram itself over about 3200 right now is CPU limited to begin with. Such a statement as "ddr4 4000" increases games by 10% over "ddr3 1600" doesn't take into account that you MUST have a CPU with technologies one or two generations newer just to run the ddr4 ram... The FPS increase isn't coming from faster ram, its coming literally from a whole generation of processor technologies that come with it.
Edited by prjindigo - 8/13/16 at 10:12am
post #213 of 396
Quote:
Originally Posted by bfromcolo View Post

Are these results going to be comparable with quad channel versus the dual channel setup used in the testing?

Probably not, as you are already less memory bandwidth limited.

The reduction in latency might help in some titles, but there is less potential for improvement here as the Haswell-E platform can't scale frequency as high.
Quote:
Originally Posted by bfromcolo View Post

I guess it doesn't matter, my motherboard seems to support DDR4-3000 max anyway.

CPU, rather than motherboard, is more likely to be the limiting factor.
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post #214 of 396
Quote:
Originally Posted by Asus11 View Post

cant find 4000mhz 2 x 8gb kit in the UK though..
a french site or amazon.com?
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post #215 of 396
I wonder whats better, 3200mhz @ 14 CAS, or 4000mhz @ 19 CAS. Would like to see a test for comparison. I'd lean more towards 3200mhz @ 14 CAS
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post #216 of 396
Quote:
Originally Posted by Malinkadink View Post

I wonder whats better, 3200mhz @ 14 CAS, or 4000mhz @ 19 CAS. Would like to see a test for comparison. I'd lean more towards 3200mhz @ 14 CAS
I'd lean towards faster RAM. Otherwise 2400Mhz CAS 10 would be near the top of the chart.
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post #217 of 396
Quote:
Originally Posted by DADDYDC650 View Post

Quote:
Originally Posted by Malinkadink View Post

I wonder whats better, 3200mhz @ 14 CAS, or 4000mhz @ 19 CAS. Would like to see a test for comparison. I'd lean more towards 3200mhz @ 14 CAS
I'd lean towards faster RAM. Otherwise 2400Mhz CAS 10 would be near the top of the chart.
Do you know the timings to make that assertion?

Comparing 2133 CL16 to 4000 CL19 is not a great way to see what really matters for performance. I got CL16 and CL19 from a vague sentence at the conclusion of their article. As far as anyone knows, the dude benchmarked 4000 CL19, then decreased clocks to 2133 without tweaking timings.

Basically, the article is useless.
    
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post #218 of 396
His newegg links only have 2133 CL15, 2400 CL15, 3000 CL15, 3600 CL17, 4000 CL19 on the 8GB price chart which is what he tested.

http://www.techspot.com/article/1171-ddr4-4000-mhz-performance/page4.html
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post #219 of 396
Quote:
Originally Posted by ToTheSun! View Post

Do you know the timings to make that assertion?

Comparing 2133 CL16 to 4000 CL19 is not a great way to see what really matters for performance. I got CL16 and CL19 from a vague sentence at the conclusion of their article. As far as anyone knows, the dude benchmarked 4000 CL19, then decreased clocks to 2133 without tweaking timings.

Basically, the article is useless.

Bait much?

What would you recommend instead?
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post #220 of 396
Quote:
Originally Posted by Armand Hammer View Post

Bait much?

What would you recommend instead?

Not bait at all. Memory frequency and memory timings are intrinsically related. One without the other makes the comparison Le Mickey Mouse.
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