How safe am I?
I'm on a 2.8 that I've had to 3.2 for a long time. Recently I got bored. Never a good sign. So, I pushed it to 3.3. My chip doesn't like 3.3 ghz. I had to kick it up to 1.68v to get it to even load Windows. Used to be I could run 3.2 on stock voltage, but it started wanting more for some reason, and I've been running it at 1.5875 or thereabouts. So, where is SNDS? I've heard it's 1.7, but I've also heard it's 1.75. Which is correct? I really don't want to lose this chip, lol.
Just out of curiosity ... who here owns a 2.8ghz Northwood and how far have you pushed it? And WHY do the voltage settings go from 1.58ish to 1.68?! What happened to everything in between there?
Just out of curiosity ... who here owns a 2.8ghz Northwood and how far have you pushed it? And WHY do the voltage settings go from 1.58ish to 1.68?! What happened to everything in between there?
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What's your CPU core temp under load/under idle? The hotter it gets, the more voltage is required to boost frequency.
I noticed you have a different stepping and revision than I do ... I got mine right around February '04. So maybe your stepping, etc is better for OCing?
Edit: Wow. That's messed. It shows on there as 1.64, and I don't know why. I just reopened it and it was at 1.68, pretty steady...
oh - Gigabyte GA-8IPE1000-L rev. 2
That's not bad at all. That's actually cool for full load. I run 52*C at full load. Your 39 reading - is that from the BIOS or from software monitoring?
Are you running your DRAM/CPU asynchronously, or a 1:1 ratio?
I still don't understand your high voltage, though. That just doesn't seem right. The Northwoods are not power hungry at all. Makes me wonder if your monitoring instrumentation or thermistor is way out of whack. I also have a hard time believing your CPU is only 39*C at the voltages you stated, and under load. When you say "load" - what, Prime 95, Folding@Home?
As for the reading ... when idling in BIOS, it's at 32*C, and when I first boot to windows, that's where it's at. So I think BIOS/software are pretty close to each other. And seeing as how I tested it with a probe, they're both pretty accurate.
By load I mean using 10 rounds of cpu arithmatic and multimedia via SiSoft Sandra. I don't have Folding or Prime on hand anymore.
I am by no means an overclocking expert; I've just been dabbling in it since my first home build - Abit KT7-R, Athlon Socket A 900@1100. All I can say is that you are definitely not overheating that CPU, but the indicated vCore is really high. BTW, I'm running FSB/DRAM asynch at 5:4; DRAM at CAS 2, 6/2/2.
As far as your temps vs Leo's, he's using an IC7 mobo, which reports temps around 10-12 C high. If you are using an Asus board, they tend to report temps on the low side. It's all how they have them set up in bios to read and it also affects temp readings with MBM because of the way the board reads the diode sensor.
My 2.6C is a D1 stepping and my 2.4C is an m0.
My temps for CPUs (one Northwood and one Prescott), under folding and other use load, are about 50-51 C with very intense Air Cooling in force and the boxes are kept squeaky clean of dust and dirt inside and out. I also am using boxes htta are not double width server boxes but are ten bay Antec boxes (full size towers, sizing of a 1040 Performance series Antec case, BOTH of them) so have lots of air volume to spread heat and lots of flow also. Look at cooling, think about recent upgrades and the power draw that goes with them, and consider that kind of thing as well as pure voltages.