2500K (Sandy) over clock results

I have just stripped everything down and dropped to bios 1003 from 1053 as 1053 is Beta.

My voltages are:
Vcore: 1.35v
VCCSA: 0.925v
VCCIO: 1.056v
CPU PLL: 1.796v
PCH: 1.031v

I have the following set
Spread Spectrum: Auto
Loadline Calibration: Expert

These are really all the Asus P8P67 Pro has. How do they compare to the Gigabyte?

My voltages are:
Vcore: 1.35v 1.440
VCCSA: 0.925v auto
VCCIO: 1.056v auto
CPU PLL: 1.796v 1.76
PCH: 1.031v auto

You do need to have vcore more than 1.400 to boot into OS at 5GHz. Also it is easier to overclock your CPU in Win7 - XP Pro is not the best OS to boot into.
 
Just as i posted in another thread, you're stupid using voltages of 1.4+ for 24/7 usage on a 45nm chip. 1.4v was the safe maximum for wolfdale 45nm chips, so why would the safe voltage go up on a 32nm chip? I'd hesitate on going above 1.375v for 24/7 usage.

I'm currently stable at 4.6ghz using 1.35v, which is decent enough for me.
 
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Just as i posted in another thread, you're stupid using voltages of 1.4+ for 24/7 usage on a 45nm chip. 1.4v was the safe maximum for wolfdale 45nm chips, so why would the safe voltage go up on a 32nm chip? I'd hesitate on going above 1.375v for 24/7 usage.

I'm currently stable at 4.6ghz using 1.35v, which is decent enough for me.

I am not one for usually calling people stupid. But in this case I think your the one that is coming of a bit stupid as I have been running my 65nm Q6600 @ 3825MHz with 1.44v 24/7 for the past 2-3 years and it's still going strong today. It's rock solid stable and I don't remember the last time I saw it hit 60C and I am on air ;)

Was on a lot lower voltage for 3.6Ghz for a while, but then decided to oc some more and it's still alive and cool :D
 
Just for informational purposes the Intel white paper (data sheet) does not include the safe voltages. No idea why that is. Or at least I have not found it. So we do not actually know what are the specified safe limits. However I do think that my be randomname was trying to be helpful and trying to impart some sound advice. I just think maybe his choice of terms was a bit hasty. Lets give him the benefit of the doubt shall we. Fairly sure none of us are intending to run our systems at 5.4GHz 24/7.
 
I am not one for usually calling people stupid. But in this case I think your the one that is coming of a bit stupid as I have been running my 65nm Q6600 @ 3825MHz with 1.44v 24/7 for the past 2-3 years and it's still going strong today. It's rock solid stable and I don't remember the last time I saw it hit 60C and I am on air ;)

Was on a lot lower voltage for 3.6Ghz for a while, but then decided to oc some more and it's still alive and cool :D

The q6600 is neither 32nm or even 45nm. It's built upon a 65nm fabrication process, it can handle 1.4v+ all day quite happily. It's also totally irrelevant when discussing safe voltages for the 32nm fabrication, so yes i would call it stupid when you're encouraging people to pump in excess of 1.4v through their 32nm chips. Those of which there has been no actual safe maximum vcore voltage released by Intel.
 
The max safe voltage isn't known yet :D

Have fun finding it out for us!

Surely it's going to be the same as for the Gulftown's seeing as they're all 32nm?

Gulftown users were always very cautious with high voltages but maybe that's just because it was an £800 chip. :p
 
The q6600 is neither 32nm or even 45nm. It's built upon a 65nm fabrication process, it can handle 1.4v+ all day quite happily. It's also totally irrelevant when discussing safe voltages for the 32nm fabrication, so yes i would call it stupid when you're encouraging people to pump in excess of 1.4v through their 32nm chips. Those of which there has been no actual safe maximum vcore voltage released by Intel.

Fair enough. Though worth pointing out is, many people consider or at least when I was doing my research considered 1.4v+ for 24/7 use to be a bit on the risky side. Way I saw it was, as long as it lasts until my next upgrade I am happy. I will probably down clock it to 3.6Ghz when it becomes my secondary pc and relax the volts.

Anyway, the main reason I replied was because you said it was stupid, which seemed a bit harsh. You are right in saying that voltage a bit high though ;)
 
I did have some bad experiences with the GD65 as well. Using the Control Center II interface, I decided to go a bit "hog wild" and see what pushing a bunch of the voltages up would net me with the system. While none of the voltages were pushed into the "red," I did end up pushing a lot of these up at the same time. This resulted in a corrupted SSD. Not only did it kill my OS, it killed SSD as well that now only shows as a 8MB drive....down from 80GB. MSI has gone back and done some testing on this, and thinks that my high PCH voltages was likely the culprit but has not been able to prove it. The bottom line to take away from this is that pushing all these voltage up will do you little or no good anyway when it comes to overclocking. Talking to ASUS about this, it told us that VCCIO was the only voltage adjustment outside of vCore that it saw to make a difference, and that VCCIO is related directly to RAM overclocking, not CPU overclocking. So all in all, I do not know if wildly pushing the board's voltages had something to do with the SSD failure, or it was just a coincidence, but I think it was my fault for doing things that needed not be done. All in all, get a K series CPU, and scale the multiplier and vCore a tiny bit and enjoy 4.4GHz. And do it all from the OS.

From [H]ardOCP here http://www.hardocp.com/article/2011/01/03/msi_p67agd65_lga1155_chipset_motherboard_review/6

May be worth being careful with the voltages until more is known ;)
 
Been playing today with my 2500K, on a ASUS P8P67. Looking comfortable at 4.5 GHz @ ~1.30V. So easy, just up the turbo multi to 45. I like how it clocks so far down when at idle, then is so fast when needed.

I've had it boot into windows at 4.7GHz @ 1.35V, but on the little stock cooler it gets too hot to really see if it's stable. Certainly at 4.8GHz, it hangs almost as soon as prime95 is run. And I had to try 5GHz, but it blue screens before windows is loaded. Anyway, I haven't the cooling to push it (yet!) - but its so fast compared to my old PC (Athlon x2 @2.5GHz) it's silly.
 
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Been playing today with my 2500K, on a ASUS P8P67. Looking comfortable at 4.5 GHz @ ~1.30V. So easy, just up the turbo multi to 45. I like how it clocks so far down when at idle, then is so fast when needed.

I've had it boot into windows at 4.7GHz @ 1.35V, but on the little stock cooler it gets too hot to really see if it's stable. Certainly at 4.8GHz, it hangs almost as soon as prime95 is run. And I had to try 5GHz, but it blue screens before windows is loaded. Anyway, I haven't the cooling to push it (yet!) - but its so fast compared to my old PC (Athlon x2 @2.5GHz) it's silly.

Good to hear on an Athlon X2 here so I'm expecting a very large improvement! What cooling are you going to upgrade to?
 
tocasa when i looked up benchmarks for my dads pc (4200 x2) 939, the closest i could find was a 4450e or something, but that was 4-6times slower on cpu intensive things like rendering vs a 2600k @ stock i think. so overclocked your getting a extra 30% on that? its a monster cpu really :D

half of his new pc is ordered now, had issues with his debit card, so gonna order rest tommorrow :)
 
Good to hear on an Athlon X2 here so I'm expecting a very large improvement! What cooling are you going to upgrade to?

Frankly I'm really happy with what I've got right now, huge difference from an Athlon X2. Doubtless I could get some more speed out of the chip, but I'll probably only try and do that in a couple of years. I tend to keep rigs for a few years - the old one was five years, albeit with several upgrades.
 
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tocasa when i looked up benchmarks for my dads pc (4200 x2) 939, the closest i could find was a 4450e or something, but that was 4-6times slower on cpu intensive things like rendering vs a 2600k @ stock i think. so overclocked your getting a extra 30% on that? its a monster cpu really :D

half of his new pc is ordered now, had issues with his debit card, so gonna order rest tommorrow :)

Yeah, it's hard to find benchmarks to compare to older PCs. This is the best I've found -

http://www.behardware.com/articles/778-14/giant-roundup-168-intel-and-amd-processors.html

but it doesn't include Sandy bridge. Still, if we say that the OC sandy bridge is right near the top of that list, then I'm looking at ~4x improvement over my old machine.

As there seems to be the interest, perhaps I'll post some benchmarks of the new PC (i5 2500k @ 4.5Ghz) compared to my old PC (939 Athlon x2 3800+ @ 2.5GHz) as I do them. Some to start -

Lightroom 3 [export 14 jpegs, from a Nikon D80]

New PC ~ 20s
Old PC ~ 120s

Lightroom was a big reason to upgrade for me, so I'm pleased with this. Obviously other parts of the PC come into play here.


3D mark 06, cpu score

New PC - 7871
Old PC - 1704
 
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