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Clock Speed vs CAS Latency - Page 2

post #11 of 18
Headlights on a car is completely irrelevant to performance. So either that wasn't a good example, or you mean RAM timings have nothing to do with performance. A fool would say the latter is correct.

Why would one compare DDR3-1866 CL8 2T and DDR3-1866 CL9 1T? Since CAS is in discussion, you should test ALL settings exactly the same, except CAS, and see what difference it would make.
Of course 1T command rate/timing would have lower overall latency than 2T. Very rarely, if ever, will you be in a predicament of choosing lower CAS with higher CR or higher CAS with lower CR.

fehl,

you have the right idea, run some benchmark tests of your own to see how the adjustments change your system performance. After all, that is the main purpose for benchmarking. You can test different CAS numbers, completely different string of timings, overclock/no overclock, to see how it all affects your computer. Then you can stay with the one that performs best.

Let us know if you can! smile.gif

Cheers
post #12 of 18
Quote:
Originally Posted by fehl View Post

Well right now I have Crucial Ballistix 2x4GB - 1866mhz @ 8-8-8-24-2T@1.65 v. The stock was 9-9-9-27 @ 1.5v

Mine are @ 8-8-8-24-1t 1.65v Oc'd to 2166 stock 1.5v i hit 7-8-7-24 1t
Quote:
Originally Posted by timisyourfriend View Post

Headlights on a car is completely irrelevant to performance. So either that wasn't a good example, or you mean RAM timings have nothing to do with performance. A fool would say the latter is correct.

Why would one compare DDR3-1866 CL8 2T and DDR3-1866 CL9 1T? Since CAS is in discussion, you should test ALL settings exactly the same, except CAS, and see what difference it would make.
Of course 1T command rate/timing would have lower overall latency than 2T. Very rarely, if ever, will you be in a predicament of choosing lower CAS with higher CR or higher CAS with lower CR.

fehl,

you have the right idea, run some benchmark tests of your own to see how the adjustments change your system performance. After all, that is the main purpose for benchmarking. You can test different CAS numbers, completely different string of timings, overclock/no overclock, to see how it all affects your computer. Then you can stay with the one that performs best.

Let us know if you can! smile.gif

Cheers

this my ram at 2166 cas 8 is equal to 2400mhz @ cas 10-11-10
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post #13 of 18
Quote:
Originally Posted by F3ERS 2 ASH3S View Post

this my ram at 2166 cas 8 is equal to 2400mhz @ cas 10-11-10

The overall latency may be equal, but not necessarily other values. The RAM was not capable of DDR3-2166 CAS 8 1T? This would be rare, but this is why there are benchmark tests for everyone to use and see what settings work best for their system and target goals. thumb.gif

Cheers
post #14 of 18
Quote:
Originally Posted by timisyourfriend View Post

The overall latency may be equal, but not necessarily other values. The RAM was not capable of DDR3-2166 CAS 8 1T? This would be rare, but this is why there are benchmark tests for everyone to use and see what settings work best for their system and target goals. thumb.gif

Cheers

Other values are there too on my phone atm lll prove later
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post #15 of 18
I'm not doubting your results, I'm simply saying results can vary based on the specific hardware used. I only speak in general based on my test results, so I believe people should test on their own to see what results they get and what they should believe rather than just listening to what forum people say.

Cheers
post #16 of 18
Quote:
Originally Posted by timisyourfriend View Post

I'm not doubting your results, I'm simply saying results can vary based on the specific hardware used. I only speak in general based on my test results, so I believe people should test on their own to see what results they get and what they should believe rather than just listening to what forum people say.

Cheers

of course of course cheers.gif
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post #17 of 18
Sorry, I dont have the numbers anymore, but on AIDA64, my RAM was always slightly faster at a higher clock than a lower latency. Really small difference though, like < 5%
post #18 of 18
Quote:
Originally Posted by Rmerwede View Post

Sorry, I dont have the numbers anymore, but on AIDA64, my RAM was always slightly faster at a higher clock than a lower latency. Really small difference though, like < 5%

This
Quote:
Originally Posted by F3ERS 2 ASH3S View Post

and here is an aida bench
Warning: Spoiler! (Click to show)
Quote:
Originally Posted by Rangerjr1 View Post

so my ram is running faster than buying 2400.. granted you can overclock that.. I would like to see the results

5.15 too http://valid.canardpc.com/2804086

Funny thing.. My ram was still a bottleneck at 1866 for games I just loaded up Crysis 3 and was getting same FPS that I was getting if my Vid cards where OC'd

Tomorrow I am going to start knocking down voltages and seeing what I really need. but dang this is crazy awesome..

You guys with the 2400 ram how much do you notice with games/other programs.. does it seem like the faster is helping push more to get crunched... I think i have stated this in this thread before but I really do think that these chips love fast tight ram. i mean that a bit more than just faster ram is better
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phenom II x6 1100T MSI 990FXA-GD65 GTX 460 GTX 460 
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Crucial Ballistix Tactical Tracer 8GB (2 x 4GB)... Samsung SSD 830  LG Blueray Coolermaster N520 
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Wet Billy
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Samsung 830 SSD 128GB LG BD-ROM/DVD Rewriter XSPC Raystorm RS240 kit A LOT OF FANS 
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phenom II x6 1100T MSI 990FXA-GD65 GTX 460 GTX 460 
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Crucial Ballistix Tactical Tracer 8GB (2 x 4GB)... Samsung SSD 830  LG Blueray Coolermaster N520 
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