3.8 and climbing!

[Crashman]

AMD fans are REALLY going to hate this: I pulled a P4 530 from a blown up Sony Micro ATX tower, popped it in a Foxconn motherboard, and it's stable at 3.8 <b>on the stock air cooler</b> On top of that, I'm still pushing it, what do you think I'll reach?

BTW, this slug is REALLY starting to wake up!

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red><P ID="edit"><FONT SIZE=-1><EM>Edited by Crashman on 09/21/05 06:13 AM.</EM></FONT></P>

 

[Crashman]

Yes, let me edit that with the updated speed!


<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>

 

[Crashman]

Awe shite, never mind, the system crashed at 4GHz.

This is one of the early Scotties.

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>

 

[Crashman]

No water cooler adapter, I'd need a wider bracket for the water block and the backplate. Besides, it never really got hot. It just got flakey anywhere within a few hundred MHz of 4GHz, and I didn't feel like pushing the voltage past 1.52v on a CPU I don't even own.

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>

 

[dhlucke]

Did you just OC to see if it would boot or did you test it?

My 3200+ for example will probably hit 2.7Ghz but it won't pass prime for [-peep-] at that so I think I'm going to have to run it at 2.4Ghz for complete stability.

<font color=red><b>Long live Dhanity and the minions scouring the depths of Wingdingium!

 

[Crashman]

Actually testing is what locked it, it's stable at 3.8...

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>

 

[Crashman]

I think 1.55v is the limit.

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>

 

[HardWareBoss]

Nice OC for a Scottie on Stock kooling.

 

[Crashman]

Yes, it's too bad I can't take advantage of it, too much power, too much heat in the room, too much noise. It's great for stress testing other parts, whenever I get the nerve to actually boot it up.

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>

 

[mozzartusm]

You dont need voltage that high for anything under 4.5Ghz You should be ok at 1.4875 or slightly lower. If you have the right heatsink you will be able to push 4.2Ghz but you will need to place a fan on the NB.

ASUS P5WD2 Premium
Intel 3.73 EE @ 5.6Ghz
XMS2 DDR2 @ 1180Mhz

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[mozzartusm]

What board do you have this CPU in? RAM?

ASUS P5WD2 Premium
Intel 3.73 EE @ 5.6Ghz
XMS2 DDR2 @ 1180Mhz

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[Crashman]

The CPU was under 60C. I realize that they're more stable when under 40C, but I don't think I would have gotten 4.0GHz from this early Prescott core.

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>

 

[Crashman]

An nForce 4 SLI Intel Edition motherboard with PC2-5300, underclocked.

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>

 

[mozzartusm]

The higher that you go with the FSB, the temps always have to scale down at a much faster pace. Why? I dont know and cant seem to get an answer that I am satisfied with. Most 775's dont run smooth @4Ghz or beyond unless your temps are at the most 35C I find guys claiming that they have a stable system but when I start asking questions they ususally have only run one benchmark. Im well aware that you know when a system is stable, I was throwing that in for other people reading this thread. Back to the heat issue. Im 90% positive that part of the problem comes from the mossfets"Spelling?" around the socket. Ive got heatsinks on anything that will get hotter than 35C to 40C. This made it possible to run the system at slightly higher temps on the CPU. The NB gets melting hot, and compared to the NB on your SOYO board its more like a CPU.

Your probably correct about reaching the limits of that chip being that its an older one. 3.8Ghz truely stable and on air is a very good OC. There are a couple of other tricks that may get you to 4Ghz stable. What do you have the PCIe frequency set at in BIOS? I doubt that you are going to be able to get a smooth system if your set at AUTO. The ASUS boards run the best when set to AUTO but they do a very good job of tuning the frequency as you raise the FSB. Most other boards you have to manually tune the frequency. If you can tell me what the frequency is at stock and at 3.8Ghz I can give you a close number to try. Also, dont take for granted that you shouldnt try lowering the voltage for the cpu. My board will run 4Ghz with the CPU voltage around 1.4 to 1.45 Can you adjust the MCH voltage on your board?

I probably shouldnt say this, but personally I wouldnt worry about the CPU burning up. Not short term anyway. It usually isnt that big of a stressor on the board as long as your under 1.55 and like ive been saying, I cant imagine you needing that much voltage.

ASUS P5WD2 Premium
Intel 3.73 EE @ 5.6Ghz
XMS2 DDR2 @ 1180Mhz

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[Crashman]

Ah, well...

This is Foxconn's new high-end NF4SLI7AA, PCIe locked at 100MHz (within a fraction of 1MHz), RAM clocked down to safe frequencies (tried a few), CPU at various voltages (3.8 stable at 1.48v but tried 1.52v to go higher), etc. The chipset cooler is the size of a large Pentium 1 cooler and uses a great 40mm fan, the sink stays cool.

I know stability increases at lower temps, but the CPU was maxing out at just over 55C, and like you said, it is on air.

I raised the voltages to everything, the Foxconn board has just about every setting you can think of, without a noticeable increase in frequency possible at various other increased voltages. Starting out from 3807MHz at 1.48v, stock northbridge, stock southbridge, stock...everything except the RAM, I dropped the RAM speed and raised all voltages by around 10% and didn't see any noticeable gains in stable clock speeds.

So I really think it's just a matter of getting a better core, or a better cooler. At 3807MHz, I'd have to top 4GHz to make any additional effort worth it, and I have a strong feeling 4GHz would be the limit at anything above ambient temperatures.

Of course I could always chill the thing and probably get more at lower than ambient temps. But it's not really worth the effort to me. Remember that I can't even afford to run a Prescott all day, it would likely add at least $20 a month to my electric bill! And I'm not going to go for extremes just to test parts.

However, if Intel comes through with that 840EE ES, I'll be able to test the limits of the board. I had a chance to get one on my last trip to Cali, but they were only giving one away and I didn't speak up fast enough. After I realized what they were giving away, I put forth a small effort and walked away with a S478 Woody ES.

You know anyone that needs a Woody ES?

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