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Help me overclock to 4ghz with i7-950

post #1 of 145
Thread Starter 
UPDATE!
************************************************** ********************
I got stable at 4.2. Maxes at 80 degrees with prime95.
CPU volt 1.325v
QPI volt 1.25v
RAM Volt 1.64v
RAM timings 6-8-6-20



Thanks guys for your help!

************************************************** ********************
I got to 4ghz stable. I'm trying to get to 4.2ghz stable now. Any help would be appreciated! Thanks!


************************************************** *****
I am trying to overclock my new i7-950.
Here is my current set up.

Proccesor: Intel i7-950 d0 Batch # 3012A804
Cpu-cooler: Corsair H70 (2 stock fans and stock thermal)
Memory: G Skill PI 3X2GB CL6 Timing: 6-8-6-20
Motherboard: Asus P6X58D Premium
Videocard: EVGA 470 GTX Superclocked
PSU: Antec TruePower New Series TP-750
Enclosure: Antec Nine Hundred 2
HDD: Seagate 750GB 7200rpm

I was able to get 3.8 ghz stable with these settings at 80 degrees max with HT OFF. If HT ON, it hit 90 degrees and I had to stop and let it cool down.
I used the information from Clunk to overclock the CPU.
http://www.clunk.org.uk/forums/overc...beginners.html

Ai Overclock Tuner - Manual
CPU Ratio Setting - 21
Intel (R) SpeedStep (TM) Tech - Enabled
Intel (R) Turbo Mode Tech - Enabled
BCLK Frequency - 181
PCIE Fequency - 100
DRAM Frequency - DDR3 - 1451MHz

DRAM CAS# Latency - 6 DRAM Clock
DRAM RAS# to CAS# Delay - 8 DRAM Clock
DRAM RAS# PRE Time - 6 DRAM Clock
DRAM RAS# ACT Time - 20 DRAM Clock

CPU Voltage 1.20000v
CPU PLL Voltage - Auto
QPI/DRAM Voltage - Auto
IOH Voltage - Auto
IOH PCIE Voltage - Auto
ICH Voltage - Auto
ICH Voltage - Auto

DRAM Bus Voltage - 1.64v
DRAM DATA REF Voltage on CHA - Auto
DRAM CTRL REF Voltage on CHA - Auto
DRAM DATA REF Voltage on CHB - Auto
DRAM CTRL REF Voltage on CHB - Auto
DRAM DATA REF Voltage on CHC - Auto
DRAM CTRL REF Voltage on CHC - Auto

Load-Line Calibration - Enabled
CPU Differential Amplitude - Auto
CPU Clock Skew - Auto
CPU Spread Spectrum - Auto
IOH Clock Skew - Auto
PCIE Spread Spectrum - Auto

C1E Support.................. = [Disabled]
Hardware Prefetcher.......... = [Enabled]
Adjacent Cache Line Prefetch. = [Enabled]
Intel(r) Virtualization Tech. = [Disabled]
CPU TM Function.............. = [Disabled]
Execute Disable Bit.......... = [Enabled]
Intel(r) HT Technology....... = [Enabled]
Active Processor Cores....... = [All]
A20M......................... = [Enabled]
Intel(r) SpeedStep(tm) Tech.. = [Disabled]
Intel(r) C-STATE Tech........ = [Disabled]

Screenshot after Prime95


According to another member from OC he was able to get 4.0 using these settings (http://www.overclock.net/intel-cpus/...locking-3.html).


Ai Overclock Tuner........... = X.M.P.
Profile #1-8-8-8-24
CPU Ratio Setting............ = [21.0]
Xtreme Phase Full Power Mode. = [Enabled]
BCLK Frequency............... = [191]
PCIE Frequency............... = [100]
DRAM Frequency............... = [1528 Mhz]
UCLK Frequency............... = [32**]
QPI Link Data Rate........... = [Auto]

CPU Voltage Control.......... = [Manual]
CPU Voltage.................. = [1.30000]
CPU PLL Voltage.............. = [1.80]
QPI/DRAM Core Voltage........ = [1.35000]
IOH Voltage.................. = [1.2]
IOH PCIE Voltage............. = [Auto]
ICH Voltage.................. = [Auto]
ICH PCIE Voltage............. = [Auto]
DRAM Bus Voltage............. = [1.65]
DRAM DATA REF Voltage on CHA. = [Auto]
DRAM CTRL REF Voltage on CHA. = [Auto]
DRAM DATA REF Voltage on CHB. = [Auto]
DRAM CTRL REF Voltage on CHB. = [Auto]
DRAM DATA REF Voltage on CHC. = [Auto]
DRAM CTRL REF Voltage on CHC. = [Auto]

Load-Line Calibration........ = [Enabled]
CPU Differential Amplitude... = [800mv]
CPU Clock Skew............... = [Auto]
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.............. = [Disabled]
Execute Disable Bit.......... = [Enabled]
Intel(r) HT Technology....... = [Enabled]
Active Processor Cores....... = [All]
A20M......................... = [Enabled]
Intel(r) SpeedStep(tm) Tech.. = [Disabled]
Intel(r) C-STATE Tech........ = [Disabled]


When I tried this, my computer wouldn't boot. Do I had need to add more cpu voltage? Do I keep QPI at "cpu voltage"+.05? We have the same set up except that he has a Corsair RAM and Western Digital HDD. Any advice on how I can get it to 4ghz?
Edited by jay05 - 12/13/10 at 9:51am
post #2 of 145
hmm you get higer temp with your 950 then i do with my 920, and i got higher volt and higher clock :/
my D14 keeps it at max 70C at 4Ghz with 1.29V
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post #3 of 145
sry bro looks like you've reached your max temp. I wouldn't go any higher 24/7.

also I think you should reseat your h70. those temps seem very high, especially with only 1.2Vcore. unless you live on the equator you should try reseating h70
    
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post #4 of 145
whats your normal temp on stock speed? if it's high then somethings wrong with your cooler.
post #5 of 145
Thread Starter 
Quote:
Originally Posted by 2127 View Post
whats your normal temp on stock speed? if it's high then somethings wrong with your cooler.
Normal temp with the H70 at default (3.07ghz) settings is 36/29/34/30 degrees. My room is around 68 degrees.

Do you think it would make a difference if I increased the Multiplier and decreased the BCLK? Does that have any affect on temps? I can try to lower the voltage at 3.8ghz but I'm not sure how that's going to help getting it to 4.0 ghz. :S My arctic silver is arriving tomorrow so I will try to reseat the H70 and see how that works out. Is the stock thermal on the H70 not good?
Edited by jay05 - 11/18/10 at 4:32pm
post #6 of 145
Quote:
Originally Posted by jay05 View Post
Normal temp with the H70 at default (3.07ghz) settings is 36/29/34/30 degrees. My room is around 68 degrees.

Do you think it would make a difference if I increased the Multiplier and decreased the BCLK? Does that have any affect on temps? I can try to lower the voltage at 3.8ghz but I'm not sure how that's going to help getting it to 4.0 ghz. :S My arctic silver is arriving tomorrow so I will try to reseat the H70 and see how that works out. Is the stock thermal on the H70 not good?
Have no idea why your temps are high with H70, im new at overclocking, i just started lastnight , i just got curious because I also followed the guide that you used and it turned out well for me. try checking your cooler if you have to adjust it in your bios. goodluck!
post #7 of 145
Reset the block. I see ppl using stock H50 and maxing mid 70's with HT on @ 1.3v, 90C @ 1.2v is not normal with a H70.

PS: Fill in the Rig info, it will help us a lot.
post #8 of 145
Thread Starter 
Quote:
Originally Posted by 2127 View Post
Have no idea why your temps are high with H70, im new at overclocking, i just started lastnight , i just got curious because I also followed the guide that you used and it turned out well for me. try checking your cooler if you have to adjust it in your bios. goodluck!
What RAM are you using. From that guide from Clunks, the RAM they use is an OCZ ddr 3 1600 but the timing is 7 7 7 but the person writing the guide set it at 8 8 8 24. Do you think this has anything to do with it? My G Skill RAM has a timing of 6 8 6 20 which is what I manually set my timings to.
post #9 of 145
Thread Starter 
Quote:
Originally Posted by Eggy88 View Post
Reset the block. I see ppl using stock H50 and maxing mid 70's with HT on @ 1.3v, 90C @ 1.2v is not normal with a H70.

PS: Fill in the Rig info, it will help us a lot.
Do you see people going to 4ghz with mid 70s or 3.8ghz?

I'm thinking it's my H70. I RMAed the first one because it was making a fish tank noise non stop from the pump. I hope this one doesn't have a problem either. My Arctic Silver 5 is suppose to be here tomorrow so we'll see what happens when I reseat the H70.
post #10 of 145
Quote:
Originally Posted by jay05 View Post
Do you see people going to 4ghz with mid 70s or 3.8ghz?.
Regardless of the clock speed, voltage is affecting the temps not the bclk.
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