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Bloomfield Voltages?

post #1 of 10
Thread Starter 
Hey guys, What are you running your Bloomfield cores at and how long have you been running them? I'm pushing my OC on my i7 970 and I have got 4.63Ghz but it took a solid 1.46V and I don't feel too good about leaving it that way. At the moment im working on a 4.41Ghz clock with 201 X 22 and that takes about 1.38V and I'm feeling better about that.

Just looking for comparisons while I let prime95 crunch away..
    
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post #2 of 10
Well I can get these clocks with these voltages on my i7 970 (with HT on);

4.5 Ghz - 1.43V
4.4 Ghz - 1.40V
4.3 Ghz - 1.38V
4.2 Ghz - 1.35V
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post #3 of 10
Thread Starter 
If you don't mind sharing, What are your bios settings just for comparison?
    
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post #4 of 10
Quote:
Originally Posted by cait_0523 View Post
If you don't mind sharing, What are your bios settings just for comparison?
Of course not. These are my settings:

Btw, I don't know if it's my board or something, but I always seem to need more QPI/VTT voltage for stability than most people around here;

Here are my settings for 4.4/4.3 Ghz:

Quote:
Ai Overclock Tuner.....................[Manual]
CPU Ratio Setting......................[25.0]
Intel(r) SpeedStep(tm) Tech............[Disabled]
Xtreme Phase Full Power Mode...........[Enabled]
BCLK Frequency.........................[176] or [172]
PCIE Frequency.........................[100]
DRAM Frequency.........................[DDR3-1400MHz]
UCLK Frequency.........................[2800MHz]
QPI Link Data Rate.....................[Auto]

CPU Voltage Control....................[Manual]
CPU Voltage............................[1.4125] or [1.3925]
CPU PLL Voltage........................[1.82] or [1.80] My board can't go lower than 1.80V
QPI/DRAM Core Voltage..................[1.3375] or [1.32500]
IOH Voltage............................[1.20]
IOH PCIE Voltage.......................[1.50]
ICH Voltage............................[1.20]
ICH PCIE Voltage.......................[1.50]
DRAM Bus Voltage.......................[1.65]
DRAM DATA REF Voltage on CHA...........[0.500]
DRAM CTRL REF Voltage on CHA...........[0.500]
DRAM DATA REF Voltage on CHB...........[0.500]
DRAM CTRL REF Voltage on CHB...........[0.500]
DRAM DATA REF Voltage on CHC...........[0.500]
DRAM CTRL REF Voltage on CHC...........[0.500]

Load-Line Calibration..................[Enabled]
CPU Differential Amplitude.............[800mV]
CPU Clock Skew.........................[Delay 300ps]
CPU Spread Spectrum....................[Disabled]
IOH Clock Skew.........................[Auto]
PCIE Spread Spectrum...................[Disabled]

C1E Support............................[Disabled]
Hardware Prefetcher....................[Enabled]
Adjacent Cache Line Prefetch...........[Enabled]
Intel(r) Virtualization Tech...........[Disabled]
CPU TM Function........................[Enabled]
Execute Disable Bit....................[Enabled]
Intel(r) HT Technology.................[Enabled]
Active Processor Cores.................[All]
A20M...................................[Disabled]
Intel(r) SpeedStep(tm) Tech............[Disabled]
Intel(r) C-STATE Tech..................[Disabled]
i7 970, Batch#3016B246
Edited by born2bwild - 2/12/11 at 7:50pm
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post #5 of 10
Thread Starter 
Awesome, Thanks a bunch!
    
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post #6 of 10
Isn't a 970 a gulftown not a bloomfield? Either way I've heard a bunch of things from different people:

some say above 1.4V is too much for 24/7 on gulftown
some say it doesn't matter as long as you keep your temps in check

Personally if it were my money I wouldn't run it past 1.42 if you're planning to keep it for a while. If you're ok with it dying in a year or two (or less if it's hot) then go for it.
     
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post #7 of 10
Quote:
Originally Posted by stren View Post
No offence but isn't a 970 a gulftown not a bloomfield? Anyway I've heard a bunch of things from different people:

some say above 1.4V is too much for 24/7 on gulftown
some say it doesn't matter as long as you keep your temps in check

Personally if it were my money I wouldn't run it past 1.42 if you're planning to keep it for a while. If you're ok with it dying in a year or two (or less if it's hot) then go for it.
i7 970 is Gulftown, and yes, I agree, for long term use voltages should be kept below 1.45 and temperatures in check.

Personally, my chip is overclocked at 4.3Ghz for daily use.
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post #8 of 10
4.7ghz 1.61V
post #9 of 10
Thread Starter 
yes it is gulftown.... brainfart sorry.

Yeah I don't really want to have to get a new chip but I have it under water with temps at 53C full load at 1.41V right now.
    
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post #10 of 10
Well I certainly wouldn't worry then 53C load is very nice, with those temps personally I'd push it higher. I apply the 10% rule of thumb, if intel lsay 1.4V is the absolute max then there's probably some room for power supply overshoot/inaccuracy which would be at least 10% probably more.

I've haven't seen anyone seriously claim above 1.5V is ok long term on a gulftown, but I'm also not that well informed :-p
Edited by stren - 2/12/11 at 8:02pm
     
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