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CPU not going full speed.

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September 14, 2009 6:59:05 PM

Hey!
I've just used CPU-Z to check my CPU speed and it says it's running at 1606 MHz.
My CPU is an e2220, which should be running at 2.4 GHz.

I also tried a stress test and I got the same result.

Why is my CPU running so slow?

The speed test I used was from here:
http://sp2004.fre3.com/beta/beta2.htm

Thanks for the help! :) 

More about : cpu full speed

a b à CPUs
September 14, 2009 7:19:52 PM

probably its downclocked since its idle, but if u stressed it, it should go full speed. strange... have u been messing around with the bios? try to dissable EIST in bios to keep the cpu at full multiplier.
September 14, 2009 8:10:53 PM

Just had a look at the BIOS.
There's not a option for EIST.
I have a crappy Foxconn motherboard.

Oh, and when the CPU is at 1606 MHz it shows the multiplier as "x 12.0".
Isn't that the most it can be?

Suppose I should mention this as well:
When I built the computer, the motherboard had a 8-pin 12v power connector socket.
My PSU only has a 4-pin connector, which I plugged in instead.

Could this be the reason why the CPU is not going full speed?

Thanks again. :D 
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September 14, 2009 9:09:45 PM

Run OCCT and see if the speed goes up as the test runs. sometimes priming doesnt bump up the clock.
September 14, 2009 9:56:46 PM

Nope just stays the same.
It started with 856 or something, then went straight up to 1606 MHz again. :( 

Thanks anyway.
September 14, 2009 10:08:07 PM

Tell us what chipset are you using. Also check in bios FSB is set. It should be 200, if its less then set it to 200mhz. It will be working at full speed, then.
September 15, 2009 1:17:04 AM

try overclocking the underclock?
September 15, 2009 6:58:16 AM

I can't set the FSB in bios.
Also something called clock speed is at 200 MHz.
If I change it to 265 MHz (the most it lets me) it raises the CPU speed to 1800 MHz.
But then it sometimes freezes in games, making me restart the computer.

This is the CPU in CPU-Z:


Thanks. :) 
a b à CPUs
September 15, 2009 7:28:36 AM

Well, the numbers don't lie. Bus speed x Multiplier = 134 x 12 = 1608.

Assuming the bus speed is correct, your multiplier is too low. Bumping it to 18 gives you 2.4GHz. Assuming the multiplier is correct, your bus speed should be 200MHz.

It's really hard to tell without more detailed systems specs. Please post more information.
a b à CPUs
September 15, 2009 10:43:23 AM

Strange, I believe the E2xxx series have an FSB of 800MHz (200MHz to be exact). I am wondering why yours is set to 533MHz / 133MHz.

What is your exact motherboard model (a screenshot of the Motherboard tab would do)
September 15, 2009 2:50:03 PM

seems like your mobo doesnt support this processor.

And the vcore is way too high....

try to update the bios.
September 15, 2009 3:03:08 PM

Herr_Koos said:
Well, the numbers don't lie. Bus speed x Multiplier = 134 x 12 = 1608.

Assuming the bus speed is correct, your multiplier is too low. Bumping it to 18 gives you 2.4GHz. Assuming the multiplier is correct, your bus speed should be 200MHz.

It's really hard to tell without more detailed systems specs. Please post more information.



our pix are amazingly similar... now i need a new one :( 
a b à CPUs
September 15, 2009 3:14:52 PM

What model is your board and if it is vintage (early 775) thin ditch it for some thing better with a P43/45 or a 750I/780I since they are cheap and work better most of the time. You can get them on newegg or you could roll the dice like what I did and got lucky on a xfx 780i for $38.77 (US) after shipping and RMA. :sol: 
September 15, 2009 3:18:53 PM

Yeh sure.
This is the motherboard tab in CPU-Z:


Should I try updating my BIOS then? :) 

Thanks!
September 15, 2009 5:20:49 PM

I've just brought a 4-pin to 8-pin converter for my motherboard.
I'm not sure if thats made any difference, but I went into the BIOS and change the clock speed from 200 MHz to 265.
This is my CPU now:


So now I get around 2 GHz.
Still not the whole 2.4 though... :( 

Does anyone else have any ideas, before I flash the bios?

Thanks :D 
a b à CPUs
September 15, 2009 6:59:34 PM

Dodi300 said:
I've just brought a 4-pin to 8-pin converter for my motherboard.
I'm not sure if thats made any difference, but I went into the BIOS and change the clock speed from 200 MHz to 265.
This is my CPU now:
http://img87.imageshack.us/img87/7782/captureeee3.png

So now I get around 2 GHz.
Still not the whole 2.4 though... :( 

Does anyone else have any ideas, before I flash the bios?

Thanks :D 


The bios is dated regardless and is not reading the correct multiplier. Many foxcon boards (the el cheapo al crapo) won't let you adjust the multiplier so give the update a try and see what happens next.
September 15, 2009 7:44:49 PM

the clock speed in your bios you're talking about should be the bus speed in cpu-z. that's an fsb800 processor and the 177.3 x 4 = fsb709.3, which it shows just below it. you're underclocked. if i were you i'd download a new revision of the bios and flash it. or if there is no newer one, reflash with the current one. oooor at the very least clear your cmos so all of your settings go back to defaults and give'er one more go.

oh and your multiplier is just fine, cpu-z shows it as x12 which is what it's supposed to be. 200x12=2400mhz. you've just got somethin wacky goin on there.
a b à CPUs
September 15, 2009 8:27:22 PM

jlear3 said:
our pix are amazingly similar... now i need a new one :( 


Great minds... ;-)

LOLcats.. Gotta love'em!
September 15, 2009 8:42:51 PM

If you don't want to flash the bios, did you try setting default in bios? This might help. However I assume that upgrading bios is the best option. And btw, your mb does support this cpu.
September 15, 2009 8:43:12 PM

Alrighty then.
I have a spare Bios chip. Is there anyway to boot with the Bios chip that works, then swap it for the other one?
Would it work?

Just incase it doesn't flash ok.

Thanks. :) 
a b à CPUs
September 15, 2009 10:45:08 PM

Dodi300 said:
Alrighty then.
I have a spare Bios chip. Is there anyway to boot with the Bios chip that works, then swap it for the other one?
Would it work?

Just incase it doesn't flash ok.

Thanks. :) 


You might as well get a new board because tracking down another chip if you could even remove it will very difficult now give what others have suggested or flash it. Look for a nice problem free board on newegg for like $40-$75 if all else fails.
September 15, 2009 11:02:01 PM

I see. :) 
I'll just flash it then.

Thanks everyone for the help!
!