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How to Overclock Intel Pentium Dual Core E2140 1.6GHz

post #1 of 28
Thread Starter 
Dear Expert,
I want to overclock my intel
pentium dual core e2140 1.6ghz.

my Default setting are:-
Phoenix AwardBIOS CMOS Set up Utility

Power User Overclock Setting
CPU Clock : 200Mhz
DIMM Clock Setting : Auto
Auto Detect PCI Clk : Enabled
Spread Spectrum : Disable
CPU Voltage at Next Boot : Default
CPU Vcore 7 Shift : Normal
VCCNB select : 1.54V Default
VCCSB select : 1.05V Default
DIMM Voltage Setting : 1.87V Voltage
CPU Clock Ratio : 8 x

MotherBoard : Jetway 945GCDMS-6H
http://www.jetway.com.tw/jw/motherboard_view.asp?productid=298&proname=945GCDMS-6H

Please help
Thank You
Edited by Rocky2013 - 8/14/13 at 5:27am
post #2 of 28
Looking at the bios screens i beleave you cannot edit the CPU Voltage / Vcore,


All you can do is up the FSB MHz, this will make your CPU / Northbridge and Ram run faster,


So try to up it from 200MHz, to 205Mhz, or to 210MHz, just go up in steps of 5MHz or 10MHz.
Then when your PC booted up try to run a stress test like Prime 95 or Intel Burn Test.

When you see it fails the stress test lower the FSB by 5-10MHz and call it a day thumb.gif
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post #3 of 28
Thread Starter 
Thanks for reply
I can increase CPU Clock upto 223 MHz but in 224 MHz BIOS can't boot.

ScreenShot of Overclock Option in BIOS
J6jXjW5.jpg
NBT82Tn.jpg
62f7zwL.jpg
pNs1B2U.jpg
xXsxFM2.jpg
UxDqynk.jpg
Q9dTRpY.jpg
vU4EmDo.jpg
Dsydmzl.jpg
Dfgh7iI.jpg
6SgMOXu.jpg
0lNZKMF.jpg
6j9Ad7v.jpg

I ran prime95 but I stopped it bcoz It take 100% cpu & ram usage.
Pls suggest which setting of prime95 is good for system
MWlUEMJ.gif

Should I use Blend or Small torture setting?
How much time does it take to see results??

Please help
Thank You
Edited by Rocky2013 - 8/14/13 at 10:22am
post #4 of 28
Hello,

The setting ''Set Vcore at Next Boot'' can be the CPU voltage settings, it depends on what your tempratures are and what cooling you have.
I think you can go up to 1.45v on these CPU's as long as the Tempratures do not exceed 70c maximum.

Maximum FSB Speed:
So you say you max out on 223Mhz FSB, this can also be because Upping your FSB speed, also ups your Memory Speed.

4 Things that can restrict maximum FSB:
1. CPU just not being stable, up the cpu vcore

2. Your Northbridge cant handle it anymore and maybe needs more voltage.

- Try upping the VCCNB voltage -> I see 1.54v is default, you could try 1.58v and see if you can push atleast 2mhz,3mhz more FSB, this is just to prove its the North Bridge voltage limiting the FSB.

3. The Memory speed is too high. I see you have a setting for ''DIMM CLOCK, 400mhz(= 800mhz ddr2) and 533mhz (= 1066Mhz ddr2),
maybe if you put it on 400mhz instead of 533mhz the memory will run at a lower speed.
Or you could try to Up the memory Voltage and make it stable in that way

4. I also see you have a 1066MHZ FSB setting, that would mean 1066/4=266.6mhz fsb.
Maybe with this setting you can run 266mhz FSB or More.
You could try setting your clock Ratio from from 8 to 7. so instead of 8x266=2128mhz you would get 7x266=1862




Just remember -> Your CPU Speed is Multiplier x FSB Speed = CPU Speed.. Example: 9x200=1.8Ghz CPU
Upping your FSB Speed also ups your memory speed what then can become unstable.
On Socket 775 too high FSB also can need more North Bridge voltage / NB Voltage

To make memory more stable you can either up the voltage, loosen the timings

Just read this power a couple of times and it will become clear wink.gifthumb.gif

edit; if you got some qeustions and i forgot too check back here, you can allways send a pm


About Prime95:
Just Click on Blend and let it run for a while like 1 to 2hour.. Longer will be even better.
You can also Click on Blend first, then click on Custom and you can edit the Maximum Memory usage
Edited by prescotter - 8/14/13 at 10:31am
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post #5 of 28
Thread Starter 
Thanx for reply smile.gif

I set cpu clock upto 225 MHz and increased VCCNB voltage upto 1.57V
but fail frown.gif

Then, I increased DIMM voltage along with above setting but fail again frown.gif

Then, I decrease DIMM Clock upto 400MHz and set CPU clock 225 MHz and up VCCNB voltage but fail again
Then, I did this all together but fail again frown.gif

I can't increase my CPU Clock above 223 MHz

(My motherboard support only FSB 800/533/400MHz processor)
http://www.jetway.com.tw/jw/motherboard_view.asp?productid=298&proname=945GCDMS-6H
post #6 of 28
Yea i read on the motherboard website max 200mhz FSB, but its weird in one of the picture it says FSB 1066MHz support.
You would expect it to run atleast 266MHz FSB.

You should try upping the VCCNB one notch higher, but i think its a FSB wall.
If it would be the memory you might boot into windows but crash on a stress test.

But because it just fails to boot i think it is the FSB/Northbridge.


You should try this for last try:
CPU Ratio: 6
FSB: 266Mhz (CPU Clock)
1066MHz FSB Support: On
North Bridge voltage 1.57v / 1.61v
Then try 1 time with Dimm Clock Setting: 533MHz and one try with Dimm Clock Setting 400Mhz

This will give 6x266MHz= 1.596Ghz on the CPU.

With this method you can just purely test if it will run 266MHz FSB.
Edited by prescotter - 8/14/13 at 1:35pm
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post #7 of 28
Thread Starter 
Thanx for reply smile.gif

When I enabled 1066 MHz Support, I can't rise CPU clock above 200 MHz (see image no.4)
post #8 of 28
Yes i see that when you Enable FSB 1066MHz support, the CPU Clock becomes grayed out and cant select anything.

But with it enabled it should be locked to 266MHz,

Just set FSB 1066MHz Support on Enabled, dont touch the FSB and set CPU Clock ratio to 6.
(If you dont set CPU Clock Ratio to 6 your CPU Speed can be too high and you need way higher CPU Voltage)

If you ever want to go over 224MHz FSB this is the only way i think on your motherboard.

I cant beleave that setting does nothing, but it can be

Otherwhise you have found the Max OC your motherboard allows
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post #9 of 28
Thread Starter 
Thanx for reply smile.gif

I set CPU Clock 210 MHz, then Test Prime95 torture testing for 4 hours and it passed

The ScreenShot of Prime95 test after 4 hours
TnHseQY.jpg

(Date is shown wrong due to CMOS reset)
Edited by Rocky2013 - 8/15/13 at 6:32am
post #10 of 28
But have you tried what i typed last post?

So enable the 1066 FSB Mode, and dont set the FSB? if you did then it apprently set the FSB automaticly only to 210MHz? or did you manually set it to 210MHz?.

So set CPU ratio to 6x, 1066MHz FSB Mode enabled, then it should boot into 6x266=1.596Ghz
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Blazer
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