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[HELP] E7500 + Gigabyte GA-EP43-ES3G Overclocking

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xeveN

Registered
Joined
Feb 22, 2010
so i tried to Overclock my E7500 form 2.93Ghz to 3.80Hz, and it worked preety well. I did a stability test using Everest Ultimate, and the maximum temperature was 62.. i tried to get 4.00GHz, and I never make it to the Login screen. keeps restarting / blue screen..

here's my BIOS Settings, would be great if someone would help set it so it can go 4.00GHz *or more if possible :)*
Thanks a Bunch guys... :)

CASE = CM 690 Nvidia Edition
MOBO = GA-EP43-ES3G
PSU = HX650W
CPU = E7500 @ 3.80GHz
HSF = Cooler Master Hyper 212 Plus
RAM = CORSAIR TWIN2X2048-6400
GPU = Gigabyte GTS250
Drivers = LG DVDRW 24X
HDD = Seagate 320GB | 7200RPM

Code:
MB Intelligent Tweaker (M.I.T)
Robust Graphics Booster..............................: Auto
CPU Clock Ratio..........................................: 9x
Fine CPU Clock Ratio...................................: +0.5
CPU Frequency...........................................: 3.80GHz (400x9.5)

Clock Chip Control
CPU Host Clock Control................................: Enabled
CPU Host Frequency (Mhz)...........................: 400
PCI Express Frequency (Mhz)........................: Auto

DRAM Performance Control
Performance Enhance..................................: [Standard]
(G)MCH Frequency Latch..............................: 400 Mhz
System Memory Multiplier.............................: 2.00D
Memory Frequency (Mhz).............................: 800
DRAM Timing Selectable................................: [Manual]

Standard Timing Control
CAS Latency Time.......................................: 5
tRCD.........................................................: 5
tRP...........................................................: 5
tRAS.........................................................: 18

Advanced Timing Control
*ALL AUTO*

Motherboard Voltage Control
........................................Normal....................
CPU Vcore.........................1.27500V.............: 1.38750V
CPU Termination..................1. 200V..............: 1.300V
CPU Reference.....................0.805V...............: Auto

MCH/ICH
MCH Core...........................1.100V................: 1.200V

DRAM
DRAM Voltage......................1.800V...............: 1.900V
 
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I would try a bit more CPU Vcore maybe up to 1.45V
Just watch your tempratures and make sure you stay below 90C or so.

Also, most people would probably reccommend a more popular stability test such as Prime95 or IBT :)

Keep us posted
 
Might also need a little more Northbridge voltage (MCH). Bump it up to 1.26. Also, see if bumping your RAM to 2.0v helps. Your ram is rated at 1.8v, but its worth a shot.
 
I would try a bit more CPU Vcore maybe up to 1.45V
Just watch your tempratures and make sure you stay below 90C or so.

Also, most people would probably reccommend a more popular stability test such as Prime95 or IBT :)

Keep us posted

Might also need a little more Northbridge voltage (MCH). Bump it up to 1.26. Also, see if bumping your RAM to 2.0v helps. Your ram is rated at 1.8v, but its worth a shot.

Vcore for 1.45V + MCH for 1.26V + DRAM for 2.0V.. will try it as soon as i get home..

i was just wondering, what is the max value of E7500 Vcore..

Thanks guys... :salute: :D
 
Multiplier : 10x
CPU Host Frequency : 400
CPU : 4.00 GHz
Vcore : 1.45
VMCH : 1.30V
DRAM : 2.0V

tried this settings
cannot start... no voltage errors when i re-enter BIOS.. (usually if its a voltage errors, theres a warning when i re-enter BIOS)

any idea guys..?
 
Change your multipliers to 10*400... may need to increase Vcore by 1 or 2 notch.
MCH to 1.30.....or up to 1.40
What's yours underload voltage in CPU-Z?
 
mmm .... wads an underload voltage..? is it core voltage..? coz i couldnt find any other voltage in cpu-z except this...
the value is around 1.104 V

i tried changing the multipliers to 10*400, increased Vcore to 1.45V and MCH to 1.30..

still, my PC couldnt get to the Login Screen... it keeps reboot-ing...
 
Underload voltage means while running Prime95 in sFFTs mode and watch for the voltage value that registers in the CPU-Z panel.
If your PC6400 rams are rated at 555-18 with 1.8volts....which isn't great for overclocking.
You can try bump it to 2.1volt......then try to increase fsb to see how far it would takes.

OTHERWISE, you must change multipliers to 10.5 or 11 and start increase FSB from 350.
 
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how long should i run Prime95...?

as soon as i run Prime95 sFFt's mode, core voltage bumped to 1.216 V

is this good or bad..?

im gonna try this :
Multiplier : 10x
CPU Host Frequency : 400
CPU : 4.00 GHz
Vcore : 1.45
VMCH : 1.40V
DRAM : 2.1V

i'll report it back and see how it goes.. thanks sam...
 
made it to @ 3.90GHz.. but it blue screened when i try to play a game..
not sure why tho...

and when i try to go @ 4.00GHz, it wont make it to login screen *like always :bang head:bang head*
 
how long should i run Prime95...?
as soon as i run Prime95 sFFt's mode, core voltage bumped to 1.216 V
is this good or bad..?

What was the actual vcore that used in the bios for you to get this 1.216v when ran Prime95? Whatever was used.....it wasn't enough

When you used 1.45 vcore in bios.....what do you get for underload voltage?
Look for any function in the bios "Load Line Calibration" and ENABLE it if available.
 
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