Setting up my RAM Timings

[AP4LIFETN]

i have g.skill hz's ram..and im not sure if im running at the correct timings or not..and in the bios, there's like 10 different timings in the bios but only like 4 or so in the specs...and would increasing the voltage change the timings automatically? my voltage is set as auto, somewhere between 1.8v and 2.8v

 

[Ste]

Once you start Overclocking you will want to manually adjust everything.

You can run 4-3-3-10 timmings up until the speed of the RAM.

Meaning once you hit PC2 6400 (Which I beleive is 800 Mhz??) you will want to use manufacturing timming. Stated on the package or the SPD info of the RAM.

Since I have the same RAM, I can tell you right now that the RAM will run 4-3-3-10 when below 800 Mhz and at least 4-4-4-12 or 5-5-5-15 at 800 Mhz or Higher.

 

[AP4LIFETN]

im ok with manufacturing timings, but what is it running now? one screen says the 5-5-5-15, and the other says 4-4-4-12, which one is the actual timing?

 

[Ste]

Enter CMOS setup and see for yourself..

 

[lazer_viking]

Ste: Most likely his CMOS values are set to AUTO-AUTO-AUTO-AUTO so he cannot see for himself.

AP4LIFETN: The actual values are 5-5-5-15-23 2T. These are actually quite slow, and I'm sure at DDR800 your RAM is capable of at least being set to a 1T command rate. I cannot vouche for the 4-4-4-12 however as I do not have that RAM. The 4-4-4-12 you are seeing in the right hand window is your manufacturer's SPD values. (see the tab in CPU-Z called 'SPD'? that's the one you clicked) The tab that says 'Memory' are the actual, current values.

 

[Ste]

Since he will need to set everything to manual I do not see how that is a problem.........


Now, since my RAM was set to 4-4-4-12 before I changed anything, his might be set to such in the CMOS as well.
<Same RAM>

 

[AP4LIFETN]

well that helps, and they are set to auto, but when i move it to manual, 10 or so timing settings pop up, but apparently only 4 of them matter? set them all or only the ones listed in cpu-z?

 

[Nagasama]

yeah my 590 sli sets them to 5-5-5-15-2t until i change them as well. as ste says, below 800mhz (mine will go to about 760) you can set the timings for 4-3-3-10 (or 8) 1T. anything over that you will have to raise the timings to 5 timings or command rate to 2T. with your rig, if you are concerned about benchmark performance and are overclocking, you will want to raise (or leave lol) the timings at 5-5-5-15-2T and clock them as high as possible (you should reach about 1060mhz with 2.2-2.3V.
the ones you need to change out of the 10 to get the SPD settings are the ones listed in your cpu-z screenie:
cas latency: 4
ras to cas : 4
ras precharge (may be listed as ras pchg): 4
Tras: 12
and if you can,
Trc:36
now, my mobo will not allow me to raise the trc that high, which may be the reason i can only get about 1070mhz out of my HZ's.
good luck!

 

[Ste]

well that helps, and they are set to auto, but when i move it to manual, 10 or so timing settings pop up, but apparently only 4 of them matter? set them all or only the ones listed in cpu-z?

No, those are the secondary RAM timmings, they are less important but can and might need to be adjusted when overclocking.

You set them to whatever is stable for a given overclock.

Like I said, I garuntee they will run 4-3-3-10 when under 800 Mhz.

 

[kobe24]

ive had mine at 3-3-3-5 1t at 800mhz and 5-5-5-15 1t 1100mhz staying at 1.85v. i got them at 4-4-4-12 1t 800mhz right now