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Asus P5N32-E Overclocking Guide - Page 323

post #3221 of 5659
a little bird told me our board will run at Vdim3V but might not boot at 3.4V... or whatever is the highest
Staaayshon
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Staaayshon
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post #3222 of 5659
Hi all,

Since I upgraded to four 1GB DIMM's I've had to lower my timings from 1T to 2T which has resulted in my RAM's performance dropping a little. That Vista experience benchmark thingy now shows my RAM as 5.7 as opposed to 5.9. Before I start faffing about in my BIOS I just thought I'd post here first for advice on what I should look into to get my DIMM's back up to 1T. I'm guessing I should just need to raise RAM and NorthBridge vCores which are both currently set to 1.9v and 1.35v respectively.

As usual, any help is appreciated.
post #3223 of 5659
I have tested 4x1GB (and 2x2) extensively over the last several months. I have found that 4GB does not like 3:2. I am running at 1:1 with RAM overvolted by 0.025v at 1T.

What are your timings, and what speed are you currently running at?

I'm going to guess you're running 333 (667) for a 1:1, which would make the most sense. I'm also going to guess you're running 3-3-3-9 (since you're underclocked from your PC2-6400 speed), so perhaps you could tighten tRC a little. I like to use this:

tRC = tRAS + CAS + 2

So, for 3-3-3-9, you use tRC 14. Bench and see if it helps.

If you're running RAM at PC2-6400, dial it back to 667 and try 1T with the tighter timings (including tRC) & I almost guarantee you will demolish your 800MHz 2T speeds!
Wolfdale 836 CFM
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Wolfdale 836 CFM
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post #3224 of 5659
it seems I will get my HZ's replaced :crossing Fingers:
Staaayshon
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Staaayshon
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post #3225 of 5659
Hi everyone. Have been watching this thread with extreme interest. In fact, it was this thread that helped me decide which board to buy. I've set everything up according to recommendations on page one and although not stable under Orthos for long, I can play all my games with no trouble at all. Thanks to all for that.
Anyway, the board I had prior to this one was the P5B Deluxe WiFi-Ap which through Speedfan or Everest would show the SATA drives temps. I don't seem to be able to get this info through this board. It does show the IDE drives temps though.
I'm not a serious over-clocker but have enjoyed reading this thread and trying some of the different suggestions and ideas you've come up with.
I hope I've set everything up properly with my new membership here :-)
Cheers all.
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post #3226 of 5659
Welcome marky, glad to have you on board.
"On board", man I crack myself up sometimes.
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post #3227 of 5659
Quote:
Originally Posted by Dostoyevsky77 View Post
I have tested 4x1GB (and 2x2) extensively over the last several months. I have found that 4GB does not like 3:2. I am running at 1:1 with RAM overvolted by 0.025v at 1T.
I'd overlooked the possibilty of differing CPU and RAM buses affecting 1T and 2T.

Quote:
Originally Posted by Dostoyevsky77 View Post
What are your timings, and what speed are you currently running at?
Bing PC6400 my DIMM's are obviously 800Mhz, but their standard SPD timeings at 800Mhz are 5-5-5-12, but they are rated to run at 4-4-4-8 when at 533Mhz. I have been able to stretch the 4-4-4-8 timeings for 667Mhz in the past, after increaseing vCore to 2.1v.

Quote:
Originally Posted by Dostoyevsky77 View Post
If you're running RAM at PC2-6400, dial it back to 667 and try 1T with the tighter timings (including tRC) & I almost guarantee you will demolish your 800MHz 2T speeds!
I have done a little testing in the past and it appeared to me that although 1T showed improvement over 2T, it was more benefical for me to run my RAM at as high a speed as possible. I've come to the conlcusion that this is probably down to the internal latencies of the nForce chipsets when compared to Intel's.

Either way, cheers fot reminding me to try differing RAM speeds and timeings. I was more focused on voltages at first and completely overlooked the possibilty of playing with the timeings. Rep +1
post #3228 of 5659
anyone got to 3.8 or above yet, if so could u give me settings for e6600
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My System
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post #3229 of 5659
Thanks for the welcome Litlratt, on board, love it.
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post #3230 of 5659
Quote:
Originally Posted by Dostoyevsky77 View Post
When you're trying to OC your CPU, it's best to leave the RAM at loose timings and at 1:1. In the BIOS, you will want to set FSB/RAM UNLINKED and type in the desired FSB value. 1400 actually means 350 FSB because it's quad-pumped. So, you would put into RAM 700 for 1:1 (DDR2 is double-pumped). Once you have a stable CPU OC, then you can start OCing the RAM, but you might find that you're faster at 1:1 than at 3:2. Just make sure to keep benchmarking after every bump.
I've tried it, but windows freezes as soon as i boot into windows.

Its stable @ 1450 FSB

1500 FSB / 750 mem causes the freeze. My voltages are high enough..

I do got it stable at 1450 FSB / 950 Mhz mem now..
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