Can you tell the difference between cas 7,8,9?

MRip · Oct 18, 2011

I'm starting to look into a possible upgrade to an i5 or i7. Can any of you with these chips actually tell any difference in the speed of your system when running the same memory but at different timings? If someone snuck onto your comp and changed the cas timing would you be able to tell? I'm mostly interested in game performance. Thanks!

Automata · Oct 18, 2011

Assuming everything else is equal, I doubt you would be able to notice anything without synthetic benchmarks.

EarthDog · Oct 18, 2011

Nope. Unless you can tell the difference between 1-2FPS as that about the only difference in tweaking timings.

For 99.9% of users that come here and ask for builds and such, DDR3 1600Mhz CL9 will be perfect.

MRip · Oct 18, 2011

Thanks guys. :thup:

freeagent · Oct 18, 2011

Before you go out and buy new ram, play with your uncore speed. That will give you the gains you seek. Fast ram, or tight timeings, or both is basically just iceing on the cake to wring the last bit of performance out of your system. You can have 1600mhz 9-9-9-24 2t still feel good. To be honest Id say youd be hard pressed to tell a difference between that and say 1600 8-8-8-24 1t. Unless you fold or something of the sort, then there are measurable differences between all speeds.

BugFreak · Oct 28, 2011

Not to jack the thread but I think it fits so what about going from 1600 7,7,7 1T to 2000 9,10,9 2T or there about? Assuming everything else stays the same other than the ram speed.

Automata · Oct 28, 2011

2000 9,10,9 2T would be slightly slower, but you won't notice it without synthetic benchmarks.

BugFreak · Oct 29, 2011

Going from PC1600 to PC2000+ wouldn't offset that?

Automata · Oct 29, 2011

~~If you kept the same timing, yes. In your example, you increased the CAS timing to 9, which would make it slightly slower (roughly 3%) than if you kept it at 1600 with cas 7 timings.~~

EDIT: Sorry, I had my numbers backwards. It would be slightly faster, but only around 3% because you increased the CAS timing. Sorry for the confusion.

BugFreak · Oct 29, 2011

Realistically though I wouldn't see a difference though right? My benchmarks may change a little but in games it would stay about the same. Also what about going from 1T to 2T? That has been my main concern when going from my 1600 to a new set when I upgrade.

Automata · Oct 29, 2011

Without synthetic benchmarks, you wouldn't notice a difference.

Can you tell the difference between cas 7,8,9?

MRip

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Automata

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EarthDog

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MRip

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freeagent

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BugFreak

Automata

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BugFreak

Automata

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BugFreak

Automata

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