Ram Latency CAS

M05K

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Hello everyone!

There's any problem if I try different RAM's with different's latency's but with the same voltage and the same speed? Can damage any component? Or just if I change the latencys bad in the bios can damage any component that's right?

Thank you
 
The worst that will happen is that it makes your system unstable. It could be too unstable and not even POST. It might only be unstable enough to cause small errors that eventualy corrupt your file system to the point that you need to re-install windows.

So, if you take it too far and it won't boot up, just Clear CMOS. If it does boot up, be sure to check for stability with a long stress test like prime 95 or IBT.

RAM tuning is the most difficult aspect of overclocking, and if you master it you will be in elite group.
 

M05K

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I tried just to put the RAM with different latency without changing anything on the bios, the computer just wont started and gave me blue screen. But if i changed the latency to a bad one on the bios it could damage the hardware right? Or not?
 
Normally, your motherboard will simply default all the timings to match the slowest stick. If you have stability issues, ie Windows randomly locks up, games freeze or crash back to the desktop, etc., check in the BIOS to ensure the timings do match what the stick with the lower latencies is supposed to be running. If not, set them manually.
 


Take a look at your RAM. Count the number of ICs. Each IC has variable headroom for overclocking. The weakest IC will determine the overclocking headroom for the whole stick, and if your sticks are in a pair, the weakest stick will be the limiting factor for your RAM overclock. See the many variables? This is why RAM overclocking is difficult and requires much patience. It may take you all day just to determine if one timing change is stable. This isn't something that you will be able to do in an hour.

 

Tradesman1

Legenda in Aeternum
What mobo/CPU and the model #s of the DRAM and how many sticks total? It sound like you have 4 sticks - 2 with 11-11-11 - 1 with 10-10-10 and 1 with 9-9-9......if so try them at 11-11-11-30, set DRAM voltage to 1.6 and will prob need a little extra to the MC (memory controller) voltage, not sure what mobo you have so not sure what it will be called - if it's AMD the MC voltage is prob the CPU/NB, If Intel may be CPUVTT, DDRVTT, VTT, VCCIO,or someting else (there also QPIVTT and occasionally it's combined into the VCCSA, etc)
 

M05K

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Hello Tradesman.

H87M-PRO - Mobo
i5 4430s 2.70ghz - CPU

I can't change the voltages in the Asus Bios, there's no AI Tweaker, another way to change it?

I have 2 RAM'S - 11-11-11
And 1 - Which can support 9-9-9 and 10-10-10
 

M05K

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Yea, but I dont know where to change the latency because theres no ai tweaker showed on my bios, theres another way to change the latency? Or is the ai tweaker options hidden fron bios?

Thank you
 

InvalidError

Titan
Moderator
There should be a memory setup page where you can choose "By SPD" or "Manual" and what you are supposed to do here is duplicate the SPD parameters in manual mode and then back them off a notch. Easiest way to do that is drop the clock by one increment since it also effectively raises all other latencies by increasing the period on which timings are based.

If the memory still does not play nice even at 1066-1133MT/s (533-667MHz) with its stock 1600MT/s timings, it probably is not going to work no matter what else you do.

Edit: oops, replied with the wrong post in mind... RAM overclocking is essentially the same thing as RAM troubleshooting but backwards.