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I7 860 Overclocking Help

post #1 of 11
Thread Starter 
Hello, I'm trying to overclock my old i7 860 2.8ghz to squeeze some performance out of it before I get my x99 rig in the near future. I'm new to overclocking and I have done a lot of reading up on it and understand the basics of it. Through trial and error I've tried many overclocks and nothing seems to pass in Prime95 for over 10 minutes. It's really frustrating and I know it's a very old CPU and all but I was wondering if anyone can guide me in the right direction. My designated mark is about 3.8ghz. I'm running a Raijintek Themis which is comparable to the Hyper 212 Evo so I should be fine in the temps for 3.8ghz. Bios is updated to latest as well. Also, message under main core in prime95 says that can't recognize all the threads.

This is my last overclock attempt that failed:

173 Bclck
22 Multiplier
1.32v
Ram 8-8-8-24 1.5v @ 1384mhz(My timing for Ripjaws)
CPU TM - disabled
Everything else is Auto.


My specs:

CPU: I7 860
Mobo: Asus P7P55 LX
RAM: G.Skill Ripjaws X 8GB 1600mhz (8-8-8-24)
GPU: EVGA GTX 970 FTW+
PSU: Sentey 750W 80Bronze Modular PSU


I can't seem to run any overclocks "stable" on Prime95.... does that mean I just have a dud CPU? I can load into windows fine do everything just fine but it always fails Prime95. Thank you for your time and any help will be greatly appreciated.




Edited by MastaMINDz7 - 5/19/15 at 9:14am
post #2 of 11
Your motherboard is crappy for overclocking the higher in CPUs. Try for 3.2Ghz with a 145 BCLK and 22 multi. Your board probably won't work with high BCLK.
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CPUMotherboardGraphicsRAM
AMD Ryzen 5 1400 3.8Ghz Gigabyte AB350M-HD3 EVGA Geforce GTX 1050 Ti G.Skill 16GB(2x8GB) 3200Mhz DDR4 
Hard DriveOSMonitorPower
SSDs and HDDs Windows 10 x64 Pro Acer G7 G227HQLbi @75Hz EVGA 430w 
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Deepcool Frame 
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post #3 of 11
Thread Starter 
Yea I don't think my mobo is known for good OC's but I saw online that many ppl have been able to take i5 750 to 4ghz stable with my mobo as well but I guess ymwv. I can actually log into windows at 4ghz at 21x191 but I freeze alot. I tried lowering my OC to about 3.5ghz and my Prime95 overheats my CPU so much that it shuts it down. Can't seem to figure it out I have a raijintek themis air cooler with artic mx-4 thermal paste. You would think that it should be able to handle the temps especially since my case has 3x120mm fans and 1x250mm mad.gif
post #4 of 11
Are you increasing IMC voltage at all?

Also start over and follow something like this:
http://www.techreaction.net/2010/09/07/3-step-overclocking-guide-lynnfield/

You should be starting at stock and making your way up. 3.5-3.6Ghz will give a very nice and noticeable increase in speed if you have a decent GPU. I played most of Inquisition on an 870 at 3.2Ghz and it was 50-60 fps.
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CPUMotherboardGraphicsRAM
AMD Ryzen 5 1400 3.8Ghz Gigabyte AB350M-HD3 EVGA Geforce GTX 1050 Ti G.Skill 16GB(2x8GB) 3200Mhz DDR4 
Hard DriveOSMonitorPower
SSDs and HDDs Windows 10 x64 Pro Acer G7 G227HQLbi @75Hz EVGA 430w 
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Deepcool Frame 
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Computer
(9 items)
 
  
CPUMotherboardGraphicsRAM
AMD Ryzen 5 1400 3.8Ghz Gigabyte AB350M-HD3 EVGA Geforce GTX 1050 Ti G.Skill 16GB(2x8GB) 3200Mhz DDR4 
Hard DriveOSMonitorPower
SSDs and HDDs Windows 10 x64 Pro Acer G7 G227HQLbi @75Hz EVGA 430w 
Case
Deepcool Frame 
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post #5 of 11
Thread Starter 
Yea I went from Auto to 1.15 to 1.2 to 1.3 IMC. I guess I can't really test the validity of the overclock cuz of temps. The temps are crazy high like mid 70s to low 80s. I was going to try to reseat the CPU cooler again and apply fresh thermal paste to try to resolve the issue. I have a GTX 970 SSC and the most demanding game I played on it so far is probably between Witcher 2 and Metal Gear Revengeance. I play with Vsync on connected to a 60" plasma TV and it runs 60fps on Ultra/Max settings. I'm actually without the GTX 970 SSC right now...cuz I sent it in for the step up thing at EVGA to get the 970 FTW+. I just want to OC to get Witcher 3 and Arkham Knight to run at 60fps at High or close to high settings.

I'm wondering though.... even when I run my ram at it's voltage of 1.5v and not auto... my computer freezes after I afk for a few hours. Could this be a PSU issue maybe? I have a Sentey 750w Modular PSU that should be sufficient technically so it's weird. It sucks cuz there are many new great games to play and I won't buy/buildt my new x99 PC til around August or so. Thanks for your input too btw. ^^
post #6 of 11
Update the Sig Rig wit all of your specs so we can exactly what you have.

And yes a crappy PSU can affect stability, especially something as power hungry as these 1st gen i series chips.
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(9 items)
 
  
CPUMotherboardGraphicsRAM
AMD Ryzen 5 1400 3.8Ghz Gigabyte AB350M-HD3 EVGA Geforce GTX 1050 Ti G.Skill 16GB(2x8GB) 3200Mhz DDR4 
Hard DriveOSMonitorPower
SSDs and HDDs Windows 10 x64 Pro Acer G7 G227HQLbi @75Hz EVGA 430w 
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Deepcool Frame 
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Computer
(9 items)
 
  
CPUMotherboardGraphicsRAM
AMD Ryzen 5 1400 3.8Ghz Gigabyte AB350M-HD3 EVGA Geforce GTX 1050 Ti G.Skill 16GB(2x8GB) 3200Mhz DDR4 
Hard DriveOSMonitorPower
SSDs and HDDs Windows 10 x64 Pro Acer G7 G227HQLbi @75Hz EVGA 430w 
Case
Deepcool Frame 
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post #7 of 11
Thread Starter 
Updated sig. My PSU actually has pretty good reviews. It's a Sentey Modular 750w 80 Bronze certified PSU. Any suggestions for the heat issue?
post #8 of 11
Here's what I'm using:

CPU Ratio: 19
BCLK: 200
vCore: 1.425
QPI/VTT Voltage: 1.390 (your IMC voltage, I guess)

Most other settings were taken off Auto and manually set to their stock values or lower performing modes. Kill all the automatic built-in overclocking.

Yes, I'm pretty sure my system is in the hotter spectrum of i7-860s, but it's been 99.999% stable for years and games don't push the CPU temperatures to the red zone although stability tests could. Just try to keep the CPU under 90C for your most demanding real world applications. I would not run these voltages with a 4.0GHz clock speed because that causes the temperature to really spike.

I should point out that I had stability issues for the longest time where my system would seemingly run okay for 30 minutes to several hours or longer but suddenly crash some games to desktop, crash and restart the GPU driver, or outright BSOD. Eventually, I looked up OC ranges for my CPU again and found that my VTT could go a lot higher. My BIOS changed the VTT's color from white to pink, which probably means "caution", but there's still a good ways to go before entering the red "danger" voltage range.
Not Enough
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7-860 @ 3.7GHz Gigabyte P55A-UD4P Sapphire R9 290X Tri-X 4GB (Original) 2x2GB DDR3-1600 G. Skill Eco 
Hard DriveOptical DriveCoolingOS
1x512GB Transcend 370 | 1x3TB Toshiba | 1x3TB... LG 18x something... Scythe Mugen 2 Rev. B Windows 7 Professional x64 
MonitorMonitorKeyboardPower
BenQ XL2411Z BenQ G2412HD Cooler Master Quick Fire Ultimate (Browns) XFX 750 Black Edition 
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Antec 902 Logitech G502 Steelseries 4HD Creative X-Fi Titanium 
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Not Enough
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7-860 @ 3.7GHz Gigabyte P55A-UD4P Sapphire R9 290X Tri-X 4GB (Original) 2x2GB DDR3-1600 G. Skill Eco 
Hard DriveOptical DriveCoolingOS
1x512GB Transcend 370 | 1x3TB Toshiba | 1x3TB... LG 18x something... Scythe Mugen 2 Rev. B Windows 7 Professional x64 
MonitorMonitorKeyboardPower
BenQ XL2411Z BenQ G2412HD Cooler Master Quick Fire Ultimate (Browns) XFX 750 Black Edition 
CaseMouseMouse PadAudio
Antec 902 Logitech G502 Steelseries 4HD Creative X-Fi Titanium 
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post #9 of 11
Thread Starter 
Thanks for the suggestion. I will try out your OC settings... 1.42core voltage and 1.39IMC seems a bit high though. Were you able to take them down at all? Yea the stability issues you mentioned are kind of what I am going through as it randomly freezes. I guess my mobo isn't really a good OCing mobo as it shuts down my computer if it hits around the 85 degree mark. There are no settings to change it in bios either. I thought asus would have hidden keys for additional options such as gigabyte or msi but so far I haven't been able to find anything =(.
post #10 of 11
A 212+ isn't going to keep it cool enough at 3.8-4Ghz, I doubt. Shoot for 3.4-3.5 and run some games. If you're capping at 60 fps, it should be enough until you can grab something else.
Computer
(9 items)
 
  
CPUMotherboardGraphicsRAM
AMD Ryzen 5 1400 3.8Ghz Gigabyte AB350M-HD3 EVGA Geforce GTX 1050 Ti G.Skill 16GB(2x8GB) 3200Mhz DDR4 
Hard DriveOSMonitorPower
SSDs and HDDs Windows 10 x64 Pro Acer G7 G227HQLbi @75Hz EVGA 430w 
Case
Deepcool Frame 
  hide details  
Reply
Computer
(9 items)
 
  
CPUMotherboardGraphicsRAM
AMD Ryzen 5 1400 3.8Ghz Gigabyte AB350M-HD3 EVGA Geforce GTX 1050 Ti G.Skill 16GB(2x8GB) 3200Mhz DDR4 
Hard DriveOSMonitorPower
SSDs and HDDs Windows 10 x64 Pro Acer G7 G227HQLbi @75Hz EVGA 430w 
Case
Deepcool Frame 
  hide details  
Reply
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