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post #351 of 10697
Quote:
Originally Posted by Lost-boi View Post
Haha good lord. 1.27v for 4.6! I need 1.4v for my 4.6!
Sucks because temps are not an issue for me.
Heh, It didn't work, I actually had a worker stop instead of a BSOD error at around 15 mins. So I'm trying v1.28 now. I was actually running 4.5 at v1.25 for a solid hour before trying to jump for 4.8. Also, I was running 4.7 at v1.34 for an hour, but had to stop because my temps were bugging me. So I have a pretty good chance.

As far as running 4.6 GHz at v1.28, its been going for 15 minutes so far with max temp being 74c. If I can run it for 2 hours with a max at 75c, I'll be happy. I may even try for 8 hours, but seeing as I have to go out it might be better to wait.

Just as I'm typing this, it spiked to 76c before dropping... I'll still take it though!
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post #352 of 10697
Quote:
Originally Posted by compudaze View Post
Wanted to share my progress on getting to 5GHz stable. Currently one hour into a 5GHz stability test and logging it with AIDA64.

Voltage set to 1.445 in BIOS with LLC set to ultra high. I first ran for 2h at 1.455v then bumped it to 0.01v and started again. Going to let it run overnight to see what happens. If by some miracle it passes, I'll lower voltage by 0.01v and start again. Still wonder if I should have shot for 5.1GHz or more instead, but 5GHz should satisfy my ego.

Min voltage: 1.432
Max voltage: 1.448
Avg voltage: 1.438
Min temps: 67-76-79-75
Max temps: 73-85-85-81
Avg temps: 71-82-82-79
Avg watts: 115.3 (I think min and max are skewed)
It failed after 2-3 hours. I was up to 1.465v maxing at 95c and avg around 86-88c. W/o better cooling it's not happening.

Instead I'm going for lowest voltage for 4.7ghz to see how much cooler it is than 4.8ghz.
Edited by compudaze - 4/2/11 at 1:56pm
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post #353 of 10697
Quote:
Originally Posted by 3xVicious View Post
As far as running 4.6 GHz at v1.28, its been going for 15 minutes so far with max temp being 74c. If I can run it for 2 hours with a max at 75c, I'll be happy. I may even try for 8 hours, but seeing as I have to go out it might be better to wait.
What are you using for cooling?
Id love to see my load temps with 1.28v! even at 1.4v im only hitting 61c after 17hours of P95.
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post #354 of 10697
Quote:
Originally Posted by Lost-boi View Post
Haha good lord. 1.27v for 4.6! I need 1.4v for my 4.6!
Sucks because temps are not an issue for me.
You and me both. My 2500K @ 4.0GHz is stable at 1.20v, but requires 1.24v to do 4.1GHz. Think I got a "bum" chip. I was hoping to get 4.2-4.4 on 1.25
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post #355 of 10697
Well think of it this way if anything "happens" to it then you can RMA it if you can use something else while you wait.
     
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post #356 of 10697
I find Prime95 blend test to be the best tool for testing stability. I tried 4600/4700/4800 but I have to up my volts up to 1.4. I think I am going to stay with 4500MHz. I am using offset mode but then again there might be some stability issues at idle.

On the side note, I must say those SB chips are miserable overclockers. My Q95550 easily overclocks to 4GHz, that is a 1.2GHz gain. SB, on the other hand overclockes by a miserable 800Mhz which I find quite pathetic. I am using Turbo Mode 3700MHz as a default for these chips.


Prime95 lowest vcore/Prime 95 highest vcore/Idle vcore in Windows


post #357 of 10697
Quote:
Originally Posted by Iching View Post
I find Prime95 blend test to be the best tool for testing stability. I tried 4600/4700/4800 but I have to up my volts up to 1.4. I think I am going to stay with 4500MHz. I am using offset mode but then again there might be some stability issues at idle.

On the side note, I must say those SB chips are miserable overclockers. My Q95550 easily overclocks to 4GHz, that is a 1.2GHz gain. SB, on the other hand overclockes by a miserable 800Mhz which I find quite pathetic. I am using Turbo Mode 3700MHz as a default for these chips.


Prime95 lowest vcore/Prime 95 highest vcore/Idle vcore in Windows
That's an unfair comparison. The turbo clock of 3.7ghz is for when only 1 core is under load. The turbo clock is only 3.4ghz when 4 cores are under load. This example is for the 2500k.

If you're pushing 4.5ghz on all 4 cores under load, that's a 1.1ghz overclock to me.

I'm sorry if you have a bad chip, but you shouldn't say SB in general is a miserable overclocker. I can pass prime blend 12h at 4.8ghz at 1.34v on my old 2500k and 1.37v on my new 2600k, making it a 1.4ghz overclock (for the 25000k). I can even 3D bench at 5.4ghz and 2d bench at 5.6ghz.

Miserable overclocker? I think not.


EDIT: After writing that, I actually looked at your screen shots. You're pushing 1.30-1.31v under load for 4.5ghz. That's not too bad at all. The voltages I was talking about were under load as well. This and considering your current temps it looks to me like you have plenty of headroom for higher overclocks (~4.8ghz+).
Edited by compudaze - 4/2/11 at 6:14pm
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post #358 of 10697
Quote:
Originally Posted by compudaze View Post
unfair comparison. turbo clock of 3.7ghz is for when only 1 core is under load. when 4 cores are under load, the turbo speed is 3.4ghz. those are for the 2500k.

If you're pushing 4.5ghz on all 4 cores under load, that's a 1.1ghz overclock.

I'm sorry you have a bad chip, but you shouldn't say SB in general is a miserable overclocker. I can pass prime blend 12h at 4.8ghz no problems, making it a 1.4ghz overclock. this was even on my old 2500k. same goes for my new 2600k. i can even bench 3d at 5.4ghz and bench 2d at 5.6ghz. miserable overclocker? I think not.
Hmmm I did not know about one core vs 4 core. +rep I do not think I have a bad chip but still I can exchange at MC.
post #359 of 10697
Alright guys, so far I've been running Prime95 on Blend for 5 Hours! I think I found my sweet spot at 4.6 GHz on 1.29v. No stability problems yet, and I went a bit overboard and trying to mimic summer time ambient temps if my A/C ever breaks down for my room; so I turned on my Plasma TV and left my overheating 72 c Laptop on near my PC (which is what I'm typing on).

In 5 hours, I've hit a max temp of 80c, and I usually hover between 75 c - 78 c. Does this sound stable so far? I plan to run it for another 5 hours or so, maybe even 12 just to stay safe, I may even post my screenshots.

However, I haven't calibrated my Real Temp so it only shows how long I've been running it with Prime95 in the background, not the load it's been under.

Honestly, its a shame I don't have watercooling, from what I see 4.6 GHz at only 1.29v is pretty good... I think I got lucky with my processor and could have probably reached 5.2 GHz easily.

By the way, any suggestions on lowering Temps besides buying a new Cooler/Case? Is 80 c safe for a Prime95 Blend run? I kind of put all my breads in one basket when I built this case, so I'd like the CPU to last for around 3 - 5 years.
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post #360 of 10697
That's not too bad that's with Hyperthreading and Air Cooling I assume?
     
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