[linkin93]

I want to tighten my timings to gain a little performance and general system performance.

I'm currently running my memory at 1666mhz, 1.701v at CAS9. (the sticks are rated for 1600mhz, 1.65v, cas9) Here is a BIOS screen. I'm trying to get them as low as possible:

I know the voltage maybe be a little excessive for a 66mhz overclock, but the ram appears to be picky at what settings it will run.

This is the kit i own:

http://www.pccasegear.com/index.php?...ducts_id=15518

Should i try running CAS8 first?

 

[xd_1771]

Try lowering the timings. Take it one at a time, then use MaxxMem, SuperPi 1M and IntelBurnTest high/max 5-10 passes to test (these stability tests are much faster than what you usually use i.e. Prime95).

 

[linkin93]

Yes but which ones? just the 9-9-9-24 ones or are there any others i need to change?

 

[linkin93]

Okay so i just changed the CAS latency, TRCD and TRP to 8. what next? stress testing?

EDIT: Ran a prime95 blend test and it failed instantly.

 

[hesho]

what is your CPU NB Voltage set at? U may have to give that a bump. Also, try keeping tRCD at 9 although i'm mega surprised it's failing at that. You may be giving your ram too much voltage too...

What is your FSB running at (HTT) Is it around 250?

 

[linkin93]

My FSB is 250x14.5 (3.625Ghz)

Is there a way I can view these other voltages without going into the BIOS? If not I'll take some screens of my BIOS again.

I believe i currently have HT and NV voltages at 1.3v, at 2500mhz. I'll reboot and check to confirm this.

Please tell me EXACTLY what i need to change in the memory timings, not just "keep this one here or that one there" please. I'm very noob at this

 

[xd_1771]

I really don't think you'll need to touch anything other than the tCL, tRCD, tRP, tRAS, tWR and tRC. tRC should be the tRP + tRAS. tWR should be the same as tCL. tRAS should often be tCL + tRCD + tRP but doesn't necessarily have to be.

 

[Blameless]

With the exception of tRFC, all of the subtimings look pretty tight already.

 

[linkin93]

Okay. And what should I change them to, that will get me to CAS8?

Currently those settings you listed are:

tCL = 9
tRCD = 9
tRP = 9
tRAS = 24
tWR = 10
tRC = 34

If you would kindly copy that and put in what I need to get CAS8 I'll go do that. Will I need to increase voltage or is 1.7v already enough?

BIOS screens again:

 

[xd_1771]

Quote:

Originally Posted by linkin93 Okay. And what should I change them to, that will get me to CAS8? Currently those settings you listed are: tCL = 9 tRCD = 9 tRP = 9 tRAS = 24 tWR = 10 tRC = 34 If you would kindly copy that and put in what I need to get CAS8 I'll go do that. Will I need to increase voltage or is 1.7v already enough? BIOS screens again:

tCL = 8
tRCD = 8
tRP = 8
tRAS = 24
tWR = 8
tRC = 32

Try this. Lowering timings one at a time works best (since some timings may work and some not, i.e. tRCD does not want to go below 8 in my case with the ECO's).

 

[yashau]

Try raising everything else except the first four and TRC. Then lower them one by one

 

[linkin93]

Raise by what? I'm not very good at this...

 

[yashau]

How does the board detect these sticks at stock? Keep those stock timings and only lower the first four and TRC. If you get them any lower then only lower the rest. I find this method works well for me

 

[linkin93]

I just entered the settings xd 1771 told me to and a prime95 blend test failed on workers #2 and #4 within 5 minutes. What next?

The sticks defaulted to CAS9 @ 1333mhz but I then fixed that to 1600mhz, 1.65v and left the timings alone. then overclocked, lowered the divider otherwise they woul be running at 2000mhz which didn't boot.

EDIT: Just ran IBT on maximum stress, 5 runs and it passed in ~78 seconds. What does this mean? RAM was loaded up to 89% usage according to my G15 LCD.

 

[linkin93]

Everything appears to be stable. as that all i need to do to call it day now?

 

[Hurtn4ASquirtn]

That is some good timings, Tight as a tiger.

 

[Domino]

Quote:

Originally Posted by linkin93 Yes but which ones? just the 9-9-9-24 ones or are there any others i need to change?

that is all you want to change. and then the command rate? (what ever 1T 2T is).

Leave everything else at auto, it'll help in stability. You'll probably need to up the voltage (i surely had to) to get the memory stable. You should first try lowering the 9 to an 8, see if its stable, then drop the next 9 down to an 8 and see if its stable. And work from there.

 

[linkin93]

Everything has been stable since this afternoon.

I left the rest of the settings on auto and it seems good.

 

[xd_1771]

Quote:

Originally Posted by linkin93 I just entered the settings xd 1771 told me to and a prime95 blend test failed on workers #2 and #4 within 5 minutes. What next? The sticks defaulted to CAS9 @ 1333mhz but I then fixed that to 1600mhz, 1.65v and left the timings alone. then overclocked, lowered the divider otherwise they woul be running at 2000mhz which didn't boot. EDIT: Just ran IBT on maximum stress, 5 runs and it passed in ~78 seconds. What does this mean? RAM was loaded up to 89% usage according to my G15 LCD.

Like I said, take it gradually, one at a time. i.e. 9-9-9-24-33, 8-9-9-24-33, 8-9-8-24-33, 8-8-8-24-33... with stability tests in between of course. It might only be one of those values that doesn't want to go down, such as the tRCD; if you are able to lower the other values further, you might get something such as 7-9-7-24 in the end.

 

[linkin93]

I'm happy with it now, what I'm not happy with is my CPU. It will not budge any further...