Overclock.net › Forums › Intel › Intel CPUs › Help keeping my E8400 at 4GHz Stable.
New Posts  All Forums:Forum Nav:

Help keeping my E8400 at 4GHz Stable.

post #1 of 19
Thread Starter 
Hi, I've been trying for weeks to keep my e8400 stable at 4ghz but still no dice. I've had to download-clock it to 3.95ghz so it wont blue screen. most of my specs are on my system info. As far as voltages goes I have my memory at v1.8(default 1.5) my core voltage is 1.432 on cpu-z & FSB voltage 1.35. If i try to bump my cpu volt higher my system wont boot and just hangs till i press restart button. i'm leaving it in your hands now to get me in the 4ghz club rolleyes.gif

extra info.
stepping 6/revision C0
Ratio 1:2
timings 9-9-9 24 2T(i've tried auto)
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8400 @ 3.95Ghz - v1.43 XFX MBN790IUL9 GIGABYTE SOC 560 Ti G.skill 4GB DDR3 1333 F3-10666CL8D 
Hard DriveOSMonitorPower
WD 750GB Windows 7 x64 SP1 SAMSUNG p2770 27' Antec 750W 
Case
CM 690 II Advanced 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8400 @ 3.95Ghz - v1.43 XFX MBN790IUL9 GIGABYTE SOC 560 Ti G.skill 4GB DDR3 1333 F3-10666CL8D 
Hard DriveOSMonitorPower
WD 750GB Windows 7 x64 SP1 SAMSUNG p2770 27' Antec 750W 
Case
CM 690 II Advanced 
  hide details  
Reply
post #2 of 19
Mine is an E8400 just like yours and has been running stable at 4.0GHz for ages now.

Vcore is 1.3 exactly and memory is at 1.8 stock but is running at 960MHz instead 800MHz.

No other voltages are raised I don't think!

1.432v is very high for only 4.0GHz.
 
Budget Build
(9 items)
 
 
CPUMotherboardGraphicsRAM
i5 2500k @ 4.8GHz - 1.38v - 24/7 Gigabyte Z68AP-D3 XFX R7970 Black Edition G.Skill Ripjaws 8GB 
Hard DriveOptical DriveCoolingOS
Seagate 1TB Samsung BluRay Noctua NH-D14 + 3 NF-F12 fans Windows 7 Professional 64bit 
PowerCase
OCZ Fatal1ty 750w Silverstone Raven RV-02-W 
CPUMotherboardGraphicsRAM
E8400 E0 Gigabyte G31M ES-2L HD 5670 4 GB generic value RAM 
Hard DriveCoolingOSPower
Samsung 500GB Scythe Yasya 1000 Windows 7 Professional 64bit Corsair CX430 
Case
Thermaltake 
  hide details  
Reply
 
Budget Build
(9 items)
 
 
CPUMotherboardGraphicsRAM
i5 2500k @ 4.8GHz - 1.38v - 24/7 Gigabyte Z68AP-D3 XFX R7970 Black Edition G.Skill Ripjaws 8GB 
Hard DriveOptical DriveCoolingOS
Seagate 1TB Samsung BluRay Noctua NH-D14 + 3 NF-F12 fans Windows 7 Professional 64bit 
PowerCase
OCZ Fatal1ty 750w Silverstone Raven RV-02-W 
CPUMotherboardGraphicsRAM
E8400 E0 Gigabyte G31M ES-2L HD 5670 4 GB generic value RAM 
Hard DriveCoolingOSPower
Samsung 500GB Scythe Yasya 1000 Windows 7 Professional 64bit Corsair CX430 
Case
Thermaltake 
  hide details  
Reply
post #3 of 19
try to find ur highest fsb 1st... Lower the multi and keep increasing the fsb till u hit a wall. Then u will have an idea about ur final oc.
8400 C0 tend to be 3.6-3.8 ghz max. Some will hit 4 some will exceed that. 2 days ago i oc-ed my friend's Co to 4ghz. I tried to do 4.2 and it wasnt booting... i know i can probably go higher but the return is not worth extra volts. Also ppl love 4GHZzzz tongue.gif.
The bottleneck
(13 items)
 
  
CPUMotherboardGraphicsRAM
E5400 @ 3.5 stock volts Msi g31 (no voltage control) Gtx 460 Hawk (Talons attack) 2g Ddr2 @ 651 
Hard DriveOS
250 WD Win 7 64-bit Ultimate 
  hide details  
Reply
The bottleneck
(13 items)
 
  
CPUMotherboardGraphicsRAM
E5400 @ 3.5 stock volts Msi g31 (no voltage control) Gtx 460 Hawk (Talons attack) 2g Ddr2 @ 651 
Hard DriveOS
250 WD Win 7 64-bit Ultimate 
  hide details  
Reply
post #4 of 19
Wow.. 1.432v is pretty high even for a C0-stepping i guess biggrin.gif

My E8500 C0 needs 1.38v for a prime/IBT - stable oc.
What multiplier you're using? Bios settings screen would help alot..
570X
(22 items)
 
  
CPUMotherboardGraphicsRAM
i7-7800x Asus Strix X299-E Evga GTX 1080 TI G.Skill Trident Z RGB 
Hard DriveHard DriveHard DriveHard Drive
Samsung Evo 960 Samsung 840 Crucial MX100 WD Blue 
CoolingCoolingCoolingCooling
Koolance 380i EK XTX 360 EK X-RES + D5 EK-FC Titan X 
OSMonitorKeyboardPower
Windows 10 Acer XB271HU Ducky Shine 3 EVGA Supernova G3 650 
CaseMouseMouse PadAudio
Corsair 570x Ducky Secret M RGB Zowie G-TF Creative ZXR 
AudioAudio
Sennheiser HD650 Antlion Modmic 4 
  hide details  
Reply
570X
(22 items)
 
  
CPUMotherboardGraphicsRAM
i7-7800x Asus Strix X299-E Evga GTX 1080 TI G.Skill Trident Z RGB 
Hard DriveHard DriveHard DriveHard Drive
Samsung Evo 960 Samsung 840 Crucial MX100 WD Blue 
CoolingCoolingCoolingCooling
Koolance 380i EK XTX 360 EK X-RES + D5 EK-FC Titan X 
OSMonitorKeyboardPower
Windows 10 Acer XB271HU Ducky Shine 3 EVGA Supernova G3 650 
CaseMouseMouse PadAudio
Corsair 570x Ducky Secret M RGB Zowie G-TF Creative ZXR 
AudioAudio
Sennheiser HD650 Antlion Modmic 4 
  hide details  
Reply
post #5 of 19
What speed is your RAM booting at?
More Cores
(20 items)
 
 
SFF: HADRON
(10 items)
 
CPUMotherboardGraphicsGraphics
i7 3930K @ 4.8Ghz offset ASrock X79 Extreme6/GB EVGA GTX680 FTW with EK waterblock EVGA GTX650 for PhysX 
RAMHard DriveHard DriveHard Drive
G-Skill 4x4GB DDR3 1866 8-9-9-24@1.5V Samsung 840 Pro 128GB Agility 3 240GB x2 RAID 0 WD 500GB X2 RAID 0 
CoolingCoolingCoolingCooling
XSPC Raystorm XSPC Dual Bay reservoir with Alphacool variable... Alphacool NexXxoS UT60 Full Copper Triple 120mm... EK GTX680 FTW waterblock 
OSMonitorPowerCase
Windows 7 64 bit Ultimate HP tSS-25X11LED 25" 1080p PC Power&Cooling Silentpower 910W Xigmatek Elysium 
MouseMouse PadAudioAudio
Razer Deathadder 3500 Rocketfish Creative Sound Core3D Logitech Z5300 
CPUMotherboardGraphicsRAM
960T unlocked to X6 ASUS M4A79XTD Evo Sapphire HD6870 1GB 2x2GB Ripjaws 7-8-7-24 F3-12800CL7D-4GBRM  
Hard DriveHard DriveOptical DriveCooling
Crucial M4 128GB WD 320GB HDD Lite-On DVD-RW Corsair H100 
OSPowerCase
Win 7 x64 Ultimate OCZ Stealthstream 600W HAF XB 
CPUMotherboardGraphicsRAM
3570K P8Z77-I MSI 560 Ti TF2 Samsung 20nm 
Hard DriveCoolingOSMonitor
Crucial M500 Kuhler 620 Windows 7 x64 52" Samsung LED TV 
CaseAudio
EVGA Hadron Air Denon receiver/ Polk audio 
  hide details  
Reply
More Cores
(20 items)
 
 
SFF: HADRON
(10 items)
 
CPUMotherboardGraphicsGraphics
i7 3930K @ 4.8Ghz offset ASrock X79 Extreme6/GB EVGA GTX680 FTW with EK waterblock EVGA GTX650 for PhysX 
RAMHard DriveHard DriveHard Drive
G-Skill 4x4GB DDR3 1866 8-9-9-24@1.5V Samsung 840 Pro 128GB Agility 3 240GB x2 RAID 0 WD 500GB X2 RAID 0 
CoolingCoolingCoolingCooling
XSPC Raystorm XSPC Dual Bay reservoir with Alphacool variable... Alphacool NexXxoS UT60 Full Copper Triple 120mm... EK GTX680 FTW waterblock 
OSMonitorPowerCase
Windows 7 64 bit Ultimate HP tSS-25X11LED 25" 1080p PC Power&Cooling Silentpower 910W Xigmatek Elysium 
MouseMouse PadAudioAudio
Razer Deathadder 3500 Rocketfish Creative Sound Core3D Logitech Z5300 
CPUMotherboardGraphicsRAM
960T unlocked to X6 ASUS M4A79XTD Evo Sapphire HD6870 1GB 2x2GB Ripjaws 7-8-7-24 F3-12800CL7D-4GBRM  
Hard DriveHard DriveOptical DriveCooling
Crucial M4 128GB WD 320GB HDD Lite-On DVD-RW Corsair H100 
OSPowerCase
Win 7 x64 Ultimate OCZ Stealthstream 600W HAF XB 
CPUMotherboardGraphicsRAM
3570K P8Z77-I MSI 560 Ti TF2 Samsung 20nm 
Hard DriveCoolingOSMonitor
Crucial M500 Kuhler 620 Windows 7 x64 52" Samsung LED TV 
CaseAudio
EVGA Hadron Air Denon receiver/ Polk audio 
  hide details  
Reply
post #6 of 19
Thread Starter 
Here are are the screens of my current settings. As you can see im able to boot at 3.95ghz at and stay relatively stable(atleast for 24/7 gaming). if i try to go higher on the fsb it'll boot to windows just blue screen in a few minutes. If you need any other info let me know.
thanks for taking a look guys.

2zppq8w.jpg

http://i54.tinypic.com/2zppq8w.jpg
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8400 @ 3.95Ghz - v1.43 XFX MBN790IUL9 GIGABYTE SOC 560 Ti G.skill 4GB DDR3 1333 F3-10666CL8D 
Hard DriveOSMonitorPower
WD 750GB Windows 7 x64 SP1 SAMSUNG p2770 27' Antec 750W 
Case
CM 690 II Advanced 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8400 @ 3.95Ghz - v1.43 XFX MBN790IUL9 GIGABYTE SOC 560 Ti G.skill 4GB DDR3 1333 F3-10666CL8D 
Hard DriveOSMonitorPower
WD 750GB Windows 7 x64 SP1 SAMSUNG p2770 27' Antec 750W 
Case
CM 690 II Advanced 
  hide details  
Reply
post #7 of 19
im pretty new to overclocking but i was just able to get my e8400 running at 4ghz.. but looking at your screen shots it looks like you got your ram running past 1333 which your sig says your ram is rated for.. i would try running them at stock speeds first.. then see if you can get 4ghz stable. after that you can try and oc your ram if you would like..
2500k Sandy
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500k @ 4.8ghz Asus P8P67 Pro HD 6950 2x2gb DDR3 Patriot 1600mhz 
Hard DriveCoolingOSMonitor
C300 128 GB + 1TB F3 Spinpoint Corsair H100 Windows 7 Pro x64 x2 24" Acer Widescreen 
PowerCase
XFX XXX Edition 650w Corsair White 600T 
  hide details  
Reply
2500k Sandy
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500k @ 4.8ghz Asus P8P67 Pro HD 6950 2x2gb DDR3 Patriot 1600mhz 
Hard DriveCoolingOSMonitor
C300 128 GB + 1TB F3 Spinpoint Corsair H100 Windows 7 Pro x64 x2 24" Acer Widescreen 
PowerCase
XFX XXX Edition 650w Corsair White 600T 
  hide details  
Reply
post #8 of 19
Thread Starter 
I will try that. Let you know how it goes. Should I use specific mode/ratio?

Also what voltage does your CPU Z report at 4ghz?
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8400 @ 3.95Ghz - v1.43 XFX MBN790IUL9 GIGABYTE SOC 560 Ti G.skill 4GB DDR3 1333 F3-10666CL8D 
Hard DriveOSMonitorPower
WD 750GB Windows 7 x64 SP1 SAMSUNG p2770 27' Antec 750W 
Case
CM 690 II Advanced 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8400 @ 3.95Ghz - v1.43 XFX MBN790IUL9 GIGABYTE SOC 560 Ti G.skill 4GB DDR3 1333 F3-10666CL8D 
Hard DriveOSMonitorPower
WD 750GB Windows 7 x64 SP1 SAMSUNG p2770 27' Antec 750W 
Case
CM 690 II Advanced 
  hide details  
Reply
post #9 of 19
mine also needs about the same as yours.. Im using 1.42v.. i really didn't want to go this high but e8400s should be good up to 1.45v.

i think if you adjust your gtlref lanes you might be able to get a lower vcore.. but again im not sure im pretty new to OCing.. but thats what i was told when i was overclocking mine.
Edited by Kunkka - 3/22/11 at 6:19pm
2500k Sandy
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500k @ 4.8ghz Asus P8P67 Pro HD 6950 2x2gb DDR3 Patriot 1600mhz 
Hard DriveCoolingOSMonitor
C300 128 GB + 1TB F3 Spinpoint Corsair H100 Windows 7 Pro x64 x2 24" Acer Widescreen 
PowerCase
XFX XXX Edition 650w Corsair White 600T 
  hide details  
Reply
2500k Sandy
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500k @ 4.8ghz Asus P8P67 Pro HD 6950 2x2gb DDR3 Patriot 1600mhz 
Hard DriveCoolingOSMonitor
C300 128 GB + 1TB F3 Spinpoint Corsair H100 Windows 7 Pro x64 x2 24" Acer Widescreen 
PowerCase
XFX XXX Edition 650w Corsair White 600T 
  hide details  
Reply
post #10 of 19
My e8400 C0 needs 1.375v to run 4ghz, and won't do it on air cooling. 3.92 was as high as it would go on air (tuniq tower 120), and 4ghz is all it will run with 100% stability on water. I've had it to 4.2ghz with 1.42v on water, but it was nowhere near stable.


You may also need to increase your northbridge voltage a tad. Not much though. Too much causes instability as well. It's a balancing act.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › Help keeping my E8400 at 4GHz Stable.