ASUS P5N-E SLI 650i Thread - Page 402 - Overclock.net

Perry · 10-15-07

So in your opinion my memory has pretty much reached its limit at 960. I'll do some more work on it tonight possible but I have a raid to attend to in Lord Of The Rings Online so I can't promise anything. I'm kinda ramped to pump the voltage on the 805 to 1.4v and see if it'll stay stable at 3.6Ghz since it's been my goal all along - a 1Ghz -stable- overclock.

Christiaan · 10-15-07

Quote:

Originally Posted by Ravin

1.4875V on the 805?

how's your temps with that zalman? I tried to keep my Vcore below 1.325V on the 820- it ran hella hot.

I let it run for a bit to reach max temp.
My 2x120mm case fans are running 1200rpm, Zalman on max fan speed and my room temp is 26, case temp is 28.

I just verified CPU-Z, because I haven't done it with the new one.
I'll let the picture tell the rest of the story.

Ravin · 10-15-07

Quote:

Originally Posted by Perry

So in your opinion my memory has pretty much reached its limit at 960. I'll do some more work on it tonight possible but I have a raid to attend to in Lord Of The Rings Online so I can't promise anything. I'm kinda ramped to pump the voltage on the 805 to 1.4v and see if it'll stay stable at 3.6Ghz since it's been my goal all along - a 1Ghz -stable- overclock.

Not necessarily. You could try 5-5-5-15 or 5-5-5-18 timings to see if you can get more MHz, although I don't think that you'll get a noticible performance increase. I saw very little difference in benchmark and real world performance running my RAM @ 800/1000MHz (same timings) with the 820. Once your RAM speed passes the FSB the performance gains are nominal. Ultimately, I setteled for tighter timings with a lower DDR speed to get the best gain running the D820 1:1 with my memory.

TriBeCa · 10-15-07

Quote:

Originally Posted by Asce

Any DIY store?

Lol, I know where to get one...but I'm not really feelin' motivated to put any more money into this rig for a bit, as I'm about to drop ~$500 on an unrelated hobby.

Quote:

Originally Posted by Perry

Well, my overclock is stuck at 3.4Ghz and my memory is still at 960mhz. I think I'll re-run my cables (it's been a mess since I built the rig), reseat the northbridge heatsink with some AS5 (any ideas how how best to apply it since this isn't the usual CPU application) and toy with the northbridge voltage (eek!).

While all of those may help with the CPU overclock will any of that help with the memory overclock? I may simply be stuck at 960mhz which isn't too bad for DDR-800 with timings of 5-4-4-15-2t but I'd like to get at least 40mhz more out of the modules if possible.

Good to know that the pencil mod won't really be needed. That's a bit dodgy for me anyway. I tend to colour outside the lines.

As for the CPU voltage, I won't go over 1.4v simply because, as much as I would love to get a 6420 or 6550 I simply can't afford to replace it if it blows or goes out early. Besides, I don't think my Tempest will be able to keep the temperatures down below 60, which is my cut off just to be safe.

Hmm...I'm feeling kind of saucey and may reseat my video card heatsink as well assuming I don't need to get new thermal pads for the memory. Perhaps that'll take a bit more reading.

I agree with others that more vNB shouldn't help. Maybe, maybe, maybe going to 1.39 will help, but there's no reason to go higher until you're at least in the 375FSB range.

As for reseating, I do basically what Ravin said. I find it's much easier to do it on the chip than on the HS, though. Another thing you can do to help is to add a tiny, tiny bit to the HS, spread it around, and then wipe it all off with a coffee filter. As long as you wipe it off fully, this will leave tiny particles of the AS5 in the small grooves in the HS, which will provide for better contact (assuming you applied a sufficiently SMALL amount of TIM to the chip itself).

Gauvenator · 10-15-07

wow look almost 400 pages!!!

TriBeCa · 10-15-07

Quote:

Originally Posted by Ravin

Not necessarily. You could try 5-5-5-15 or 5-5-5-18 timings to see if you can get more MHz, although I don't think that you'll get a noticible performance increase. I saw very little difference in benchmark and real world performance running my RAM @ 800/1000MHz (same timings) with the 820. Once your RAM speed passes the FSB the performance gains are nominal. Ultimately, I setteled for tighter timings with a lower DDR speed to get the best gain running the D820 1:1 with my memory.

Meant to say something related to this in my last post:

Rather than trying to get 1000MHz, you'll probably see much greater performance gains by reducing your RAM clock until you're stable at a CAS of 4, and then tightening the rest of your timings as well. Because going from 5-4 in CAS represents a 20% decrease in the 'real time' CAS latency, as long as you don't have to go down to 768 your CAS will decrease. Of course, lowering the clock slows down all your other timings, so that's not a perfect equivalence, but I'm fairly certain that as long as you're around 850MHz or faster you'll see a performance gain with a slower clock and tighter timings.

Don't forget to tweak the tRC timing as well--I got mine from 30 on auto to 7!