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This dude overclocked a Dell prebuilt system - Page 3

post #21 of 46
Ropey, do you have an AIM or xFire? I have a P4 530 and am greatly interested in this mod of which you speak!
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post #22 of 46
Quote:
Originally Posted by Ropey
If one takes a P4 630 3.0GHz and an Intel 925XE Chipset and then mods the chip to allow for a 266mhz fsb vs a 200mhz fsb one will achieve a 4.02GHz processor running on default voltages.

I have built my wife a 630 3.0GHz @ 4.02GHz at complete stock voltages. Thus the only thing that needs to be done is a mod to allow the bios to see the chip as a 266fsb chip. The Dell will have no overclocking features to allow this as all it needs is the ability to recognise a 266fsb X 4 = 1066.

In other words. If your system will take a 1066fsb then this mod is possible.

R
But not every chip will run with an increase of 1.02 ghz without a voltage increase. Some chips might,some might not.
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post #23 of 46
Quote:
Originally Posted by sccr64472
But not every chip will run with an increase of 1.02 ghz without a voltage increase. Some chips might,some might not.
I do not think there is any difference in the 6xx series and the EE series with regards to the 1066fsb.

So far I have not seen one 6xx series not make the 1066fsb. I have played with three of them and all have made it. As well, on the forums I belong to there have been no others who have not made this move.

The 5xx series are a touch and go with some making it and some not making it but the 5xx series are not EE procs. The fab that runs the EE is the same one that drops out the 6xx processors.

If one wishes to try this then they need a motherboard that runs the 266fsb. I used the P5AD2-E Premium board for my wife's overclock. I also work where I can take chips home for testing.

It's bad when I want to o/c and have to work on my wife's computer to do it. She can really scroll through excel though with this box and a 6800GT @ 415/1150

Don't get me wrong though, there might be some chips that do not make it. Just that in my sphere, this has yet to happen.

Edit: aim = ropey123

R
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post #24 of 46
If they can clock that much higher on stock voltage, you'd think that they would run stable at the lower clock speed with less voltage then. Seems crazy that Intel wouldn't ship them out with a lower default voltage if they can run on less. Heat has been a major issue on Intel lately and that would most definitely help.
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post #25 of 46
I can run my 630 at 1.2V all day long in prime95 @ the default 3.0Ghz. The spec shows 1.4 but my chips shows 1.34 as default.



If you notice at the system tray, the 47C is the cpu temp. When left idle it drops to 44 with load being 58 (dual prime95 18 hours). The 62 is the 6800 GT.

R
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post #26 of 46
Hmm. This auction seems very familiar to another one posted a while ago. I'll do some digging.
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post #27 of 46
Thread Starter 
Thanks guys for all your input!
    
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post #28 of 46
Hey, I just saw this... wish I would have seen it earlier!

Basically that guy bought a Dell OC'd it and is now selling it for more money than he paid for it just bc it's overclocked... he's betting that some people who don't know jack about overclocking will think it's a great deal.

But yes, it is very possible to OC the new Dell XPS systems. Dell started unlocking the bios quite a while ago... although it's a little known secret. I helped a guy OC his Dell a couple months ago on driverheaven.net
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post #29 of 46
so wait a minute, i might be able to oc my dell? do you know how long ago they started unlocking the bios?
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post #30 of 46
I just checked the action and he has a CPU-Z screenshot posted showing a 4.0 GHz overclock off a 266 MHz FSB. It *seems* to be legit.
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