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Bad Binned i7-920 Overclocking to to 4.0GHz+ with 1.40V+ Please Help =)

post #1 of 11
Thread Starter 
I've had my current i7-920 Since 2009 and over the course of its life I've tried many times to hit 4.0 GHz while being stable with a vcore of about 1.42. However no matter what different settings of my own and those from around the web I've tried I've had no luck. I'm hoping maybe some direct help from fellow forums members and overclocking enthusiasts will lead to better results.

My current Mainboard is a: ASUS P6T V2 Deluxe
Ram: 12 GB of Triple Channel G.SKill Ripjaws 1600 Mhz Ram
Cooling: Custom Water cooling with just CPU Loop on EK-XTX 360 RAD and RASA CPU Block

My current settings are:

2yy5hj6.jpg

Temp @ Idle: 37 C
Temp @ 100% Load over 1 Hour: 67 C

-So far I've been Stable at 3.9 GHz with a VCore of 1.425V at 100% Load
-I tried 4.0 GHz with the same VCore and Settings I crashed in 3 Mins @ 100% Load
-I've tried underclocking
-I've also tried using multipliers of x19, x20 and x21
-Under the assumption that this is a Bad Binned CPU I have hence the High Voltages to run stable @ 100% load


What I'm trying to achieve:

- 4.0 GHz or Over
- No permanent Damage to CPU for 5 Months
- Idle Temps Below: 50 C
- Load Temps Below: 80 C

I don't mind trying any extreme solutions as long as i don't damage my CPU permanently or at least for the next 5 months.

Thanks for taking a look, any help and or tips would be appreciated =)
Edited by r3quiem - 2/24/12 at 5:04pm
post #2 of 11
Try setting load line calibration to 1000mv.
Disable cpu tm function

Also If you mostly game I would suggest disabling Hyperthreading. I have the ASUS P6X58D-P motherboard which is not the best overclocker in the world when it comes to voltage. At 4.0GHz with hyperthreading on im at 1.35v. Also at 4.2GHz hyperthreading off im at 1.35v if i were to turn hyperthreading on at 4.2GHz ill see a voltage of 1.50v so turn off ht and you will see lower volts and temps.
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Intel Core I7 920@4.0GHz Asus P6X58D-Premium ATI Radeon HD5870 12GB Crutial 1600MHz 
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Intel Core I7 920@4.0GHz Asus P6X58D-Premium ATI Radeon HD5870 12GB Crutial 1600MHz 
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3 Seagate barracuda 1T LG BR Burner Koolance Windows 8 Pro x64 with Media Center  
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post #3 of 11
Thread Starter 
I tried your method and I am stable at my current setting with 4.0 GHz when I turn HT off. Im going to try to reduce the vcore and see how far I can get.

What do you think is the absolute max for vcore before I need to worry about reducing the life of my CPU significantly. I hear some people going all the way up to 1.5v
post #4 of 11
1.5 vcore is for the new Intel i7's which are Sandy-Bridges and they run on the 1155 socket. While the 920 is part of the 1st generation i7's which run on the 1366. The max vcore I would recommend is 1.4. Some people go to 1.45, but that's if you have custom water. I would probably recommend max going 1.375 assuming you may want it longer than 5-6 months. I would suggest HT off like the person above me suggested. Also try CPU clock skew to 800.
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post #5 of 11
Intel designed the i7-900 series chips to run between 0.800V to1.375V. However its not going to explode if you run at 1.4v. I my self have ran my 920 at 1.45v for two years. Your more than likely going to have a problem with your motherboard before you will with your 920.

Also after finding your lowest stable core voltage, work on your qpi/dram voltage. 1.35 is a little high. currently im running my qpi at 1.25v
My System
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Intel Core I7 920@4.0GHz Asus P6X58D-Premium ATI Radeon HD5870 12GB Crutial 1600MHz 
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3 Seagate barracuda 1T LG BR Burner Koolance Windows 8 Pro x64 with Media Center  
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Intel Core I7 920@4.0GHz Asus P6X58D-Premium ATI Radeon HD5870 12GB Crutial 1600MHz 
Hard DriveOptical DriveCoolingOS
3 Seagate barracuda 1T LG BR Burner Koolance Windows 8 Pro x64 with Media Center  
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post #6 of 11
Thread Starter 
Quote:
Originally Posted by Swag View Post

1.5 vcore is for the new Intel i7's which are Sandy-Bridges and they run on the 1155 socket. While the 920 is part of the 1st generation i7's which run on the 1366. The max vcore I would recommend is 1.4. Some people go to 1.45, but that's if you have custom water. I would probably recommend max going 1.375 assuming you may want it longer than 5-6 months. I would suggest HT off like the person above me suggested. Also try CPU clock skew to 800.

I am running a Custom water loop so I can give 1.45 a try and see if I can get it to go a little further. Will give the clock skew a try and post back.
Quote:
Originally Posted by Warfox101 View Post

Intel designed the i7-900 series chips to run between 0.800V to1.375V. However its not going to explode if you run at 1.4v. I my self have ran my 920 at 1.45v for two years. Your more than likely going to have a problem with your motherboard before you will with your 920.
Also after finding your lowest stable core voltage, work on your qpi/dram voltage. 1.35 is a little high. currently im running my qpi at 1.25v

If it helps mine is a revision C0 cpu. I will try to reduce the QPI and see where I get and post back here. Thanks
post #7 of 11
WOW a CO? your lucky to hit 4.0GHz. If you get a stable 4.0GHz try to stay at least in the mid 70's temp wise.
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3 Seagate barracuda 1T LG BR Burner Koolance Windows 8 Pro x64 with Media Center  
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RCA 27inch Logitech G15 Ultra X4 1050 watt Corsair Obsidian 800d 
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My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I7 920@4.0GHz Asus P6X58D-Premium ATI Radeon HD5870 12GB Crutial 1600MHz 
Hard DriveOptical DriveCoolingOS
3 Seagate barracuda 1T LG BR Burner Koolance Windows 8 Pro x64 with Media Center  
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RCA 27inch Logitech G15 Ultra X4 1050 watt Corsair Obsidian 800d 
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post #8 of 11
It looks like some of your voltages are kind of high. Your QPI and IOH seem high for the OC you are running. I don't think you need to run the QPI that high for 6 dimms at that memory speed you are running. I usually see 1.35v+ with DDR3 2000 speeds. I would recommend lowering the QPI to 1.25v and the IOH to 1.15v.

As for your 4.0GHz OC, that seems about right for the C0 revision. With i7 CPUs in the market place going for $150 and less, I recommend picking up a D0 and selling yours for $115-ish for a quick sale. I've picked up an i7 920 that does 4.0GHz with 1.275v and a i7 950 that does 4.0GHz at 1.25v from the marketplace. Each was less than $150.
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post #9 of 11
Yea all chips are created not equal. Some run better than others at certain volts. However i found that motherboards make a big difference too. Example, my P6X58D-P will run my 920 at 4.0GHz At 1.35v stable. But with the same 920 in my P6T Deluxe. i can get stable at 1.3v.
My System
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Intel Core I7 920@4.0GHz Asus P6X58D-Premium ATI Radeon HD5870 12GB Crutial 1600MHz 
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3 Seagate barracuda 1T LG BR Burner Koolance Windows 8 Pro x64 with Media Center  
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RCA 27inch Logitech G15 Ultra X4 1050 watt Corsair Obsidian 800d 
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CPUMotherboardGraphicsRAM
Intel Core I7 920@4.0GHz Asus P6X58D-Premium ATI Radeon HD5870 12GB Crutial 1600MHz 
Hard DriveOptical DriveCoolingOS
3 Seagate barracuda 1T LG BR Burner Koolance Windows 8 Pro x64 with Media Center  
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RCA 27inch Logitech G15 Ultra X4 1050 watt Corsair Obsidian 800d 
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Logitech G15 
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post #10 of 11
I have a d0 and i need 1.38v to hit 3.8ghz, and not very comfortable to go higher than that :/
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