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Old 09-02-07, 09:21 AM   #145
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Default Re: Kentsfield/Quad-Core Overclocking Thread

Quote:
Originally Posted by Blacklash
Hehe, nice. Question is, though, is if she's prime stable at that speed.

I once fed 1.7v just for a series of quick Pi runs on my E6600. Topped out around 3.85GHz. Passed every one of them but failed Prime in 2 minutes even though I was only loading ~65c.

This chip I have now is kind of a "meh" overclocker. I'm holding out as best I can until Penryn in November on 45nm. I'd really like to see what my setup can do since I'm only loading around 50-52c at my current OC @ 1.57v.
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Old 09-02-07, 10:32 PM   #146
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Default Re: Kentsfield/Quad-Core Overclocking Thread

I'm not going to know if it will do prime @ 4.0GHz 1.65v until I put it under water cooling. No way air will deal with 1.65v and 4.0GHz doing prime unless you happen to be testing outdoors in Scandinavia in the winter. Holding 3.8 on air with quad core would be very challenging, never mind 4.0GHz.

When I do get properly water cooled I'll report back with results.

I've seen 4.35GHz under quality water cooling with a Q6600 G-0 @ XS.

And if Penryn rocks, plain and simple, I'll buy one.

Quote:
Originally Posted by Xion X2
Hehe, nice. Question is, though, is if she's prime stable at that speed.

I once fed 1.7v just for a series of quick Pi runs on my E6600. Topped out around 3.85GHz. Passed every one of them but failed Prime in 2 minutes even though I was only loading ~65c.

This chip I have now is kind of a "meh" overclocker. I'm holding out as best I can until Penryn in November on 45nm. I'd really like to see what my setup can do since I'm only loading around 50-52c at my current OC @ 1.57v.
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Old 09-03-07, 06:58 PM   #147
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Default Re: Kentsfield/Quad-Core Overclocking Thread

Ok guys, I'm having a bit of a problem with my overclock.....I just updated my P5B-Deluxe bios to the new one (1215) and decided to see what I could do with my overclock. See if I could squeeze a bit more out of it. Well, looks like I can! I had it up to 3.4 and it was rock solid. But I have a problem. My sound gets all crackly at this high overclock. Lower the FSB back to 355 and it works fine. But as soon as it gets above 360 it makes the sound start crackling again.

I don't really understand why the high FSB would affect my X-fi....I tried putting the PCI bus sync mode to enable at 33.33 mhz but that resulted in my hard drives that are running off a PCI-E 1x SATA RAID card to become write protected....really weird stuff. And it didn't fix the crackling sound either.

So....any ideas?
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Old 09-03-07, 07:06 PM   #148
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Default Re: Kentsfield/Quad-Core Overclocking Thread

Quote:
Originally Posted by einstein_314
Ok guys, I'm having a bit of a problem with my overclock.....I just updated my P5B-Deluxe bios to the new one (1215) and decided to see what I could do with my overclock. See if I could squeeze a bit more out of it. Well, looks like I can! I had it up to 3.4 and it was rock solid. But I have a problem. My sound gets all crackly at this high overclock. Lower the FSB back to 355 and it works fine. But as soon as it gets above 360 it makes the sound start crackling again.

I don't really understand why the high FSB would affect my X-fi....I tried putting the PCI bus sync mode to enable at 33.33 mhz but that resulted in my hard drives that are running off a PCI-E 1x SATA RAID card to become write protected....really weird stuff. And it didn't fix the crackling sound either.

So....any ideas?
I've heard of a few who complained about this and in particular some problems in Vista. I don't think it's your motherboard, although I do believe that the X-fi somehow works in relation to your system RAM, and if you're overclocking it then it may give you the "crackling" that you describe.

Have you tried cutting your RAM back a little to see if it fixes it?
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Old 09-03-07, 08:19 PM   #149
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Default Re: Kentsfield/Quad-Core Overclocking Thread

I had the crackling problem as well on my P5B deluxe mobo when I had overclocked it. The fix for me was to set all the voltages properly. I had one or 2 on auto I think.
The problem also caused my PCI-E link speed to drop to 1x.
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Old 09-04-07, 05:49 PM   #150
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Default Re: Kentsfield/Quad-Core Overclocking Thread

Quote:
Originally Posted by slaWter
einstein_314, is the PCIe Interface set to 100MHz in addition to the 33.33MHz for the PCI?
Yeah I have it set to 105MHz.

So I tried cutting back the RAM, but it doesn't go any slower. I'm running it 1:1 with the FSB (378x2=756Mhz). That is the lowest the mobo will let it go....all the other options for multipliers result in higher RAM speeds. And my RAM is rated to 1066 MHz so it shouldn't be a problem.

I tried manually setting ALL the voltages and everything that had an auto mode but that didn't change anything either. still crackles. Oh well....I'm happy enough with 3.2Ghz. Unless someone else has any ideas....
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Old 09-04-07, 07:52 PM   #151
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Default Re: Kentsfield/Quad-Core Overclocking Thread

Drop your PCI-E frequency back to 100mhz

I too had mine up to about 105.. might have been 108, did that so my PCI-E link speed wouldnt drop to 1x.
So not sure if it was the voltage that fixed it or going back to 100mhz
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Old 09-09-07, 11:50 AM   #152
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Default Re: Kentsfield/Quad-Core Overclocking Thread

I got my new quad core q6700 to 3ghz by setting the FSBRAM ratio to 3:4 and cranking the FSB to 1200mhz. The ram is made to run at 2.2 volts to I changed it to that as well as adjusting the ram timings to their rated speed;4-4-4-12.
Ram runs as full ddr2 800mhz effective and I score 5.9's all the way down the vista performance benchmark.
ran Lost Planet demo looping for 5 hours and everything is as stable as can be. Never even touched the voltages on my cpu. I love this thing and damn is it fast.
I know my clocks are more modest than some folks are getting but hell, I've never had 4 logical cpus at 3ghz a piece..
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Old 09-19-07, 07:04 PM   #153
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Default Re: Kentsfield/Quad-Core Overclocking Thread

Quote:
Originally Posted by slaWter
Nice clock and wallpaper there

Here is another article about G0 OC: http://www.anandtech.com/cpuchipsets...oc.aspx?i=3066
Including all the codes to recognize a G0 stepping!


Thank you,I love that wallpaper (its from a series),I have dropped the mem speed and my old HSF for a near 100% noise free setup now,and I am still maintaining my oc.

My load temps have gone up a bit running passive with this new sink,but nothing to be concerned with (64 to 70c) Its either this or I slap a 120mm Yate Loon blue LED 69cfm fan I have,and get it back up to 3.43Ghz.I must
admit I really like the silence.My case fans are all undervolted and running slow.


Edit : BrianG,I see you are using the Antec Spotcool ? I have a few as well,running on low,helps to move a little air around.I use one to cool off the northbridge and the other to help cool the 8800.
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Old 09-22-07, 09:08 AM   #154
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Default Re: Kentsfield/Quad-Core Overclocking Thread

I was thinking about getting a Kentsfield & 2GB more RAM. Would this be a good move or should I wait to upgrade CPU/MEM/MB in November with the new Intel Quads coming out? Anyone know how the new Quads compare in benchmarks compared to the Kensfield's?

If it's not a large margin I'd rather scratch my upgrade bug asap
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Old 09-23-07, 08:21 AM   #155
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Default Re: Kentsfield/Quad-Core Overclocking Thread

Quote:
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I'd wait for Yorkfield (Extreme Edition this November).
Are there any benchmark comparisons yet? I don't know if I'll have 1G to drop on that puppy either doh
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Old 10-06-07, 07:03 AM   #156
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Default Re: Kentsfield/Quad-Core Overclocking Thread

My latest OC

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