Cas Latency ?

[THE UNKNOWN]

What's Best Cas Latency Timing For Over-Clocking
CORSAIR 4096MBYTES DDR3 DEFAULT is 9-9-9-24
MOBO P8H61 ASUS
CPU 2100 I3
Hope Getting Help Thanks For Giving Your Time

 

[87ninefiveone]

Which model Corsair RAM is it. Big differences between vanilla, vengence models and dominator models (even differences between some sub-brands). Also, what speed and voltage is it labeled for?

Unfortunately there is no good answer for your question even with the above info. RAM is notoriously fickle and what works for one pair may or may not work for another.

In general, best OC will be achieved at 1.65V (absolute maximum), then keeping stock timings and bumping up the RAM speed until it doesn't boot. Then return to stock speed and try the same thing lowering the timings instead until you get something that doesn't boot. Then use this chart to compare which is fastest in your case...

http://i1013.photobucket.com/albums/af254/Jaquith/CAS_Frequncy_Chart.png

My guess is that if you keep stock speed and bump up the voltage then you should be able to hit around 7-8-8-22 or so. Fiddle around with 1T vs 2T also, but more than likely you'll be stuck with 2T as DDR3 just doesn't seem to like running at 1T in my experience. Keep in mind (see chart) that this isn't really getting you a whole lot, especially in terms of real world performance. The memory OC ship sailed along with the dissapearance of DDR2 a couple years back. It just doesn't matter anymore.

 

[THE UNKNOWN]

CMV4GX3M1A1333C9

 

[87ninefiveone]

Uh oh. Valueselect RAM. What I said above may still be about right, but more than likely its going to be something like 8-8-8-24 2T @ 1600MHz, 1.65V. That's a best guess since that RAM isn't a "performance oriented" model.

 

[THE UNKNOWN]

Its not worked

 

[THE UNKNOWN]

Its not worked

 

[87ninefiveone]

Try the faster timings and bump down to 1333MHz. Keep in mind that the RAM you have is plain jane vanilla stuff and isn't really meant for overclocking. That said, don't worry if you don't see big results because even if you did it wouldn't mean anything from a real world system performance standpoint. Memory overclocking just doesn't yield much in the way of performance these days.

 

[THE UNKNOWN]

It worked for 5-5-5-18 [ No difference as said ]
Thanks

 

[87ninefiveone]

Holy crap. You pulled 5-5-5-18 out of that RAM? That's nuts considering you couldn't get a modest bump downwards at 1600MHz.

 

[lowjack989]

CAS 5 at 1066MHz maybe....He didn't get 5-5-5-18 at no 1600 MHz on some valueselect CAS 9...I call BS if the OP says its running at 1333 or 1600 at CAS 5.....As I stated before no way in hades


BTW...CAS 9 @ 1600 MHz is plenty fast...CAS 7 @ 1333 MHz is roughly the equivilent of CAS 9 @ 1600 MHz ....I run 7-9-8-24-40-1T @ 1.61v --->1600 MHz on CAS 9 @ 1600 MHz RAM yet my RAM was made to OC...So just be happy with CAS 9 @ 1600 MHz with that RAM you have

 

[Deleted member 217926]

You have an i3 2100 anyway. It's onboard memory controller was made to work with DDR3 1333. If you can even change the RAM voltage going over 1.5v will void the CPU warranty.

 

[lowjack989]

+1^--> CAS 7 @ 1333 MHz with 1.5v is the sweet spot

 

[THE UNKNOWN]

4-5-5-18 @1066mhz 1.6v
But how Cpu avoid warrenty ?

 

[Guest]

the memory controller on the cpu is specc'd at 1.5 volts going over 1.55 voids the intel warranty

 

[THE UNKNOWN]

But how they know ?

 

[Guest]

when you sent a cpu back with a fried memory controller.

 

[THE UNKNOWN]

Oh so im in trouble ?

 

[Guest]

only if you don't lower the voltage. you may not get the same great timings but atleast you'll know you won't screw up your cpu.

 

[THE UNKNOWN]

I just did it 5 times now its default
[ just wanted to know how its worked ]