What are realistic timings for F3-12800CL9D-8GBXL ?

[xstalkrx]

Current timings and speed are 1600mhz @ 9-9-9-24 I have read that if I could get the CAS down to 7 that it would be about a 40 percent improvement! So what is a logical and realistic timing based on my parts?

i7 2600k @ 4.5 ghz (more to come soon), gtx 560 sli, SSD.

7-7-7-21 ? Or is that too much to ask?

 

[Deleted member 217926]

No where near 40%. Read this: http://www.bit-tech.net/hardware/memory/2011/01/11/the-best-memory-for-sandy-bridge/1

I have DDR3 1600 cas 7 memory but it only helps in video encoding and extreme multitasking. For most people DDR3 1600 cas 8 or 9 is fine. I have this:

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231431

 

[Leaps-from-Shadows]

40%!?!? I need some of whatever they're smokin'...

Going from 9-9-9-24 to 7-7-7-18 would yield maybe a 3% performance increase in synthetic benchmarks. This would lead to you noticing absolutely no real-world difference in applications. Perhaps a tiny bit smoother (a whole 6% -- the threshold for us humans to notice the difference is around 10%) while multitasking, but that's it. Don't even bother.

Overclock your video card -- at least that gives noticeable improvements in performance.

 

[xstalkrx]

40%!?!? I need some of whatever they're smokin'...

Going from 9-9-9-24 to 7-7-7-18 would yield maybe a 3% performance increase in synthetic benchmarks. This would lead to you noticing absolutely no real-world difference in applications. Perhaps a tiny bit smoother (a whole 6% -- the threshold for us humans to notice the difference is around 10%) while multitasking, but that's it. Don't even bother.

Overclock your video card -- at least that gives noticeable improvements in performance.

Ok I just used a crysis benchmark tool and OC'd my SLI gtx 560's from core clock 880 to 950 and shader clock of 1760 to 1900. Difference in average FPS is 2 FPS. Voltage kept constant because as soon as I touch voltage the program becomes unstable in the benchmark tool and 3dmark 11.

Is this worth it?

 

[Leaps-from-Shadows]

Another guy got an extra four frames with an overclocked 4850 Overall Quality on High and 1680x1050 resolution, no AA). The Tech Report did some testing and apparently the default timedemo for Crysis is pointless for benchmarking: "this FlyBy benchmark is heavily texture streaming bound and it doesn't reflects in-game performance."

Play the actual game and you would notice the difference.