GUIDE: Overclocking On EP/P35-DS3L v1.3.1 [UPDATED: 10/2/2008]

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mikecdm

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Thats pretty much explains it. So if my ram is rated at 2.1v I should have the setting to +.3? I'd also like to ask if it helps with stability to set it higher? I had initially set the memory timings to 4-4-4-12, which my ram is rated at, but I didn't know what the default voltage on the board was so I didn't make any changes. Once I started o/c, I relaxed to the timings to 5-5-5-15, but haven't changed them back. Would raising the voltage to 2.1 and lowering the timings again be better? I'd assume so, but this is my first time o/c'ing.

 

Silverion77

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Set the voltage to 2.1v and then change it depending on your overclock. Yes more voltage will make it more stable (like a Cpu) but u dont want to overvolt it by adding too much
 

Mugz

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Me? Waste electricity? Damn, my secret's out.

The reason I run it the entire weekend is usually because I can't be bothered to test it for longer than about 30 minutes during the week, whereas over a weekend I'm usually involved in playing various forms of paintball and/or hiking up a mountain and/or socialising and/or getting shagged to smithereens (lately) and/or partying and am thus not in the immediate vicinity of my PC.

Hey - it works for me...
 

homerdog

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Cool. I've been playing with my brand new DS3L and I have to say I'm very impressed with the board. I have my e6750 at 3.2GHz undervolted to 1.3V and I still lowering. I think I got a really good e6750 :bounce:

Are you planning on going into the Ctrl+F1 settings? There's some good stuff in there like timings and MCH read delay (tRD). I know the "Performance Enhance" setting adjusts the tRD, but going from "Standard" to "Turbo" drops it from 11 to 6, which is too low for a 400MHz FSB to be stable.

I've got most of the setting figured out and I'd be glad to help.
 
^I am not planing on going in to RAM timing and RAM over clocking in general. This is meant to be for CPU OCing only. I would be glad if you could post the explanations here or on another topic and link it here.
 

homerdog

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It's best to keep things consolidated so when I get the time I'll post my findings with regards to memory timings and MCH delay here. Needless to say those settings can make a BIG difference, both for stability and performance.

Cool thread by the way; I wish I had found this before I set my overclock up. Would've saved me a couple of hours.
 

homerdog

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Here's some stuff to get the ball rolling:

One of the most important and often overlooked settings is the MCH read delay (tRD). Without going into too much detail I will say that, similar to memory timings, the lower this value is the better your system will perform. However, setting this too low will compromise system stability, and if you go REALLY low your system will fail to POST.

This review from AnandTech does an excellent job explaining this critical setting. I recommend starting at page 4, but the quick and dirty can be found on page 9.

Setting tRD on the DS3L can be a bit tricky. The "Performance Enhance" setting adjusts it as follows:
Standard__tRD=11
Turbo_____tRD=6
Extreme___I have never been able to POST at this setting, so I don't know

On my system I am able to boot into Windows with Turbo, but Prime fails after ~2 seconds. Backing off to Standard will make things nice and stable, but the performance hit is noticeable. So how do we go about fine tuning the tRD on this board?

It's easy really actually. The DS3L refers to tRD as "Static tRead Value." Manually setting this will override the default "Performance Enhance" value. Weird I know, but that's it. Setting this to 8 allows my system to be completely stable at a FSB of 400MHz while yielding a nice performance boost over the default "Standard" setting of tRD=11.
 

bildo123

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Yes finally! I googled this and couldn't find how to adjust this setting on my DS3L. I've read a review pertaining to a certain make of ram where as changing this setting to a lower timing increased a benchmarks FPS by a decent amount, being ~3FPS or so. I believe it was a real world run through and not something synthetic as well. I myself will now play with this and see what results I can come up with. Thanks.
 

Yeah, looks like it. Got to update the pics.

Updated the pics on 3/4/2008. Along with new helpful information posted by homerdog
 

bildo123

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What a minute though, let me get this straight as there was no Static tRead Value on my DS3L. I changed a sub memory timing named Refresh to ACT delay, is that it? I changed it to 8 and everything seems to be stable....
 

bildo123

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Ya I did, it's the only way t show the hidden memory sub-timings....lol then what the heck did I set to '8'....system hasn't acted funny though...As a matter of fact I have an old picture of me messing around and I have all the memory timings in this screenshot. This doesnt reflect anything I have set right now but if you could just point to the one that would be good enough


 
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