OCUK Sandy Bridge, SB-E and Ivy Bridge 5GHZ Club
- Thread starter SimonMaltby
- Start date
Soldato
squeezed out slightly better super pi score on a 55 multi but not enough to take another place on the board
Nicely done there dude. I'd be crapping my pants putting that much voltage through mine
Soldato
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- 1 Apr 2009
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Well I have been fiddling with my OC. It was on Auto OC to 4.8 but was using too many volts. Currently running a manual OC to 5Ghz with speedstep on, using offset voltage so i'm not sure what volts to report.
Anyway...
Prime 95 will pull 1.352-1.368v.
5GHz under 1.4V with auto settings. That's a pretty impressive chip.
Associate
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- 24 Feb 2011
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It may not be the RAM. I Use that kit and can bench/boot using a 55x multi (in the top 20 also) using 1.55v
Carl
This is a bit too slow really. I have a feeling it might be because the multiplier is bouncing between 55 and 16 before I start the run so doesn't begin at full speed. I can't find how to fix my multi at 55 though.
Better result with C3, C6 state, Speedstep, Spread Spectrum all disabled and a .1 bump to BCLK. (Still downlocks to 16x though).
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This is a bit too slow really. I have a feeling it might be because the multiplier is bouncing between 55 and 16 before I start the run so doesn't begin at full speed. I can't find how to fix my multi at 55 though.
Better result with C3, C6 state, Speedstep, Spread Spectrum all disabled and a .1 bump to BCLK. (Still downlocks to 16x though).
very nice mate
what was wrong the first times you tried?
thats a massive jump in vcore from the 54 to the 55 multi....
im sure thats the fastest 2500k on here now
Well the 5488.4 post had Speedstep, Spread Spectrum, C3 & C6 all enabled so drew less. It is possible I didn't need them at all, I was just trying to get the multiplier to stay at 55 (or whatever I choose) all the time, but it seems I can't turn turbo off. I can try again with them all off and keeping the .1 BCLK bump.
Soldato
You should be getting 6.7 or so with that clock speed, try disabling Windows aero and all non essential processes.
My best time on a 2700K. I don't think I'm going to beat it now, I can no longer boot with the same settings and am not going to risk going over 1.6V even for a better benching run.
you just pipped me by 0.001s
very well done you
but like arnie hopefully "ill be back"
Associate
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- 19 Dec 2010
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My best time on a 2700K. I don't think I'm going to beat it now, I can no longer boot with the same settings and am not going to risk going over 1.6V even for a better benching run.
Insane volts, I am guessing this is on phase or LN2?
Managed that with all the settings left on with a .2 bump to BCLK. Offset was +0.23. I could probably have had lower volts, if the CPU was in a better mood atm. Sometimes it demands more volts than at other times
. I'll try disabling background programs later, about to have dinner. I'm only using a H60 here and temps are fine, though I am only doing super pi runs which don't bring any cores to full load.
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Ok I tried closing background processes & raising the priority of Super Pi in task manager and I got a very small improvement. (To be more precise I closed all non microsoft services in msconfig/services, slected adjust for best performance under system properties, closed most processes under my username (I left System, Local & Network alone))
Edit: I finally managed to get the CPU to stick at the OC multiplier all the time, but it made little difference.
Edit: I finally managed to get the CPU to stick at the OC multiplier all the time, but it made little difference.
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Associate
5ghz
You need to up the power and current limits, to stop it from down clocking the multi under full load
Well I have been fiddling with my OC. It was on Auto OC to 4.8 but was using too many volts. Currently running a manual OC to 5Ghz with speedstep on, using offset voltage so i'm not sure what volts to report.
Anyway...
Prime 95 will pull 1.352-1.368v.
Try to get your DRAM voltage down the max recommended is 1.575v
Also if you can get the CPU PLL voltage down to 1.750v it will reduce heat output slightly
Actually I meant that I was trying to get my cpu to run the max multiplier when idle, it ramps up when at load fine.
On my 5ghz OC DRAM is currently at 1.5, PLL at 1.709 and my offset has been set to +0.06. It is not prime stable like this, but it seems stable enough for anything else so that is what I have left it at. To keep it prime stable it needs +0.065v.
Edit: Bumped offset to +0.065 but lowered PLL all the way to 1.586 (lowest setting available) with seemingly no impact on stability.
On my 5ghz OC DRAM is currently at 1.5, PLL at 1.709 and my offset has been set to +0.06. It is not prime stable like this, but it seems stable enough for anything else so that is what I have left it at. To keep it prime stable it needs +0.065v.
Edit: Bumped offset to +0.065 but lowered PLL all the way to 1.586 (lowest setting available) with seemingly no impact on stability.
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Associate
Bah, I want to be in this club so bad.
Tried to do a suicide run with 1.4v but I need better cooling.
Tried to do a suicide run with 1.4v but I need better cooling.