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Overclocking E8400 at EP35C

post #1 of 5
Thread Starter 
First of all I have to say that I'm a total noob in overclocking. I never did this before, but due financial problems I can't afford a new PC but still want to play some games so I thought overclocking my old PC would be a good idea.

I'v read some FAQs and a few topics on this forum but couldn't completely understand the whole stabilizing process, and most of all the CPU-Memory clock connection.

If anyone could give me a step-by-step instruction on a good overclock (not the one that 'pushes to the limit') for my CPU and motherboard I'll be more than happy. If it doesn't work like this - well, I'll be happy to get any help.

UPD: The cooling system and graphic card are two thing I recently bought for upgrade.
Edited by arty_a - 4/21/11 at 1:58am
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core2Duo E8400 EP35C-DS3R GTX-460 1GB 2x 2GB Patriot DDR3 1333 
OSPower
Windows7 Ultimate x64 Topower EP550W 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core2Duo E8400 EP35C-DS3R GTX-460 1GB 2x 2GB Patriot DDR3 1333 
OSPower
Windows7 Ultimate x64 Topower EP550W 
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post #2 of 5
Try this first


Robust Graphics Booster___________ [auto]
CPU Clock Ratio ____________ [9.0]
CPU Host Frequency (MHz)__________ [400]
PCI Express Frequency (Mhz)_______ [100]
System Memory Multiplier (SPD)____ [2.40]
RAM ____________________xxx.xMHz
DRAM Timing Selectable_______ SPD __ [Manual]
Performance Enhance = [Standard]

CAS Latency Time________________ 9
Dram RAS# to CAS# Delay_________ 9
Dram RAS# Precharge Delay_______9
Precharge Delay (tRAS)__________ 24
ACT to ACT Delay (tRRD)_________ Auto
Rank Write to READ Delay________ Auto
Write to Precharge Delay_________ Auto
Refresh to ACT Delay______________ Auto
Read to Precharge Delay__________ Auto
Static tRead Value_______________ Auto
Static tRead Phase Adjust________ 10

System Voltage Control____ [Manual]
DDR2 OverVoltage Control__ [+0.1V] (or the voltage they need)
PCI-E OverVoltage Control_ [AUTO]
FSB OverVoltage Control___ [+0.1V]
(G)MCH OverVoltage Control [+0.1V]
CPU Voltage Control_______ [1.368V]
    
CPUMotherboardGraphicsRAM
Core i7 2600K@4.5GHz Asus P8P67 Pro 3.0 (B3) EVGA GTX 1070 SC Black Edition 4x4GB Corsair Vengeance 1600-9-9-9-24-2t-1.5v 
Hard DriveOptical DriveOSMonitor
M500 240GB SSD for OS, 2x256GB M4's Raid0 for ... Generic Windows 10 Pro 64 Bit Asus VK266H 
PowerCase
Corsair RM 750x Cooler Master Storm Scout 
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CPUMotherboardGraphicsRAM
Core i7 2600K@4.5GHz Asus P8P67 Pro 3.0 (B3) EVGA GTX 1070 SC Black Edition 4x4GB Corsair Vengeance 1600-9-9-9-24-2t-1.5v 
Hard DriveOptical DriveOSMonitor
M500 240GB SSD for OS, 2x256GB M4's Raid0 for ... Generic Windows 10 Pro 64 Bit Asus VK266H 
PowerCase
Corsair RM 750x Cooler Master Storm Scout 
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post #3 of 5
this is a very basic explanation of overclocking

its basic maths. your e8400 is rated at 1333mhz. you always divide this number by 4 so 1333/4= 333, this is your fsb. or cpu frequency

then your processor (cpu) has a multiplier of 9 (also called ratio)
so 333 x 9 = 2997mhz or 3.0GHz

can you raise the fsb? yours is now 333. (333 x 9 = 2997mb or 3.0ghz ) try rising it to 350
boot into windows
download realtemp and coretemp (google them)
install and run them
then download intel burn test (ibt) and run it.
have a look in task manager and notice how much free ram is listed.

in ibt set threads to 2 (for 2 cores) and then click on custom ram and enter an amount just below the free amount.
eg. i have 2520mb free ram. so i enter 2500 into the custom ram.
run the test for 5 passes.
keep an eye on temps (do not let it go over 65.c)

if test runs fine, go back into bios, and change frequency (fsb) to 370 and repeat the tests.
keep doing this in 20mhz steps until windows will not boot. then just go back a step (remove 20 from the fsb) to the last stable frequency, or
just raise the cpu voltage a couple of levels. it should now boot.
its a balancing act, higher voltages will get you higher fsb, but it will also give you higher temps.

THE MAX TEMP FOR A E8400 IS 72.C.
TRY TO KEEP IT BELOW 60.C FOR 24HR USE

the trick is to do this step by step, and not go straight to eg. 400 (400 x 9= 3.6ghz), just take your time

get the cpu maxed before increasing the ram speed
Edited by j.col - 4/21/11 at 5:06am
Old Slow Hand
(15 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 B3 @ 3.4GHz 425x8 DFI Lanparty DK P45-T2RS Plus HD 5850 (risen from dead) 2x2gb DDR2 Geil Black dragon pc2-6400 @ 1020 MHz 
Hard DriveCoolingOSMonitor
Samsung SpinPoint F3 500GB & Seagate 1TB Noctua NH-D14 Windows 7 pro Samsung SyncMaster 2253BW..... 1920 x 1080 
PowerCaseAudio
Corsair HX 520w NZXT Hades Asus Xonar DG 
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Old Slow Hand
(15 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 B3 @ 3.4GHz 425x8 DFI Lanparty DK P45-T2RS Plus HD 5850 (risen from dead) 2x2gb DDR2 Geil Black dragon pc2-6400 @ 1020 MHz 
Hard DriveCoolingOSMonitor
Samsung SpinPoint F3 500GB & Seagate 1TB Noctua NH-D14 Windows 7 pro Samsung SyncMaster 2253BW..... 1920 x 1080 
PowerCaseAudio
Corsair HX 520w NZXT Hades Asus Xonar DG 
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post #4 of 5
Thread Starter 
Quote:
Originally Posted by turrican9 View Post
Try this first
The system failed to boot.

j.cool,
I got the math, thanks, but can you explain a bit more about increasing voltage? I have to just guess how high to raise it?


I did some experiments with the configs and if I just raise the FSB to 400 keeping everything else on "auto" the system boots and works on about 56.C
Also when I try to change the "System Memory Multiplier" to anything but "auto" the system fails to boot at any config that previously worked.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core2Duo E8400 EP35C-DS3R GTX-460 1GB 2x 2GB Patriot DDR3 1333 
OSPower
Windows7 Ultimate x64 Topower EP550W 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core2Duo E8400 EP35C-DS3R GTX-460 1GB 2x 2GB Patriot DDR3 1333 
OSPower
Windows7 Ultimate x64 Topower EP550W 
  hide details  
Reply
post #5 of 5
Quote:
Originally Posted by arty_a View Post
The system failed to boot.

j.cool,
I got the math, thanks, but can you explain a bit more about increasing voltage? I have to just guess how high to raise it?


I did some experiments with the configs and if I just raise the FSB to 400 keeping everything else on "auto" the system boots and works on about 56.C
Also when I try to change the "System Memory Multiplier" to anything but "auto" the system fails to boot at any config that previously worked.
how i do it is, keep raising the fsb until pc wont boot, then i go up a couple of levels of vcore.
then it will boot, and i keep raising fsb until it wont boot again, then more vcore and on and on

you shoudn't touch the ram until the cpu is maxed and stable, then you oc the ram.
so leave ram at stock speed until you get the cpu maxed
Old Slow Hand
(15 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 B3 @ 3.4GHz 425x8 DFI Lanparty DK P45-T2RS Plus HD 5850 (risen from dead) 2x2gb DDR2 Geil Black dragon pc2-6400 @ 1020 MHz 
Hard DriveCoolingOSMonitor
Samsung SpinPoint F3 500GB & Seagate 1TB Noctua NH-D14 Windows 7 pro Samsung SyncMaster 2253BW..... 1920 x 1080 
PowerCaseAudio
Corsair HX 520w NZXT Hades Asus Xonar DG 
  hide details  
Reply
Old Slow Hand
(15 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 B3 @ 3.4GHz 425x8 DFI Lanparty DK P45-T2RS Plus HD 5850 (risen from dead) 2x2gb DDR2 Geil Black dragon pc2-6400 @ 1020 MHz 
Hard DriveCoolingOSMonitor
Samsung SpinPoint F3 500GB & Seagate 1TB Noctua NH-D14 Windows 7 pro Samsung SyncMaster 2253BW..... 1920 x 1080 
PowerCaseAudio
Corsair HX 520w NZXT Hades Asus Xonar DG 
  hide details  
Reply
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