Davet50
7 Thorium

Re: Overclocking XPS 420

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I would not us the tape method myself but would rather go with the hard jumper way. Yes you run the risk of voiding your warranty IF Dell was to find out...

Like I said it does not affect the bus speed at all so there is no issue with the ram. I could do the mod on my rig which runs at 1066 tryin to oc the system manual I can only get a oc of 2.7 gigs before the system freezes which is a result of the bus. the pin mod would still leave the bus at 1066 but again trick the processsor into thinking it is higher. there are two ways to up the speed of a processor change the bus or change the multiplier. I believe the pin mod actually affect the multipler setting intenally in the chip

 Home Built Sandy Bridge P8P67 i7 2600k @ 4.5 GHz 8gigs GSkill Ripjaws. Corsair 800D Case and AX1200 Ps X-Fi Titanium Fatal1ty pro PCIe Sound Card
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Forum member since 2003

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zrock_87
3 Argentum

Re: Overclocking XPS 420

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Btw, Davet50 is your bios unlocked?  Also, whats the hard jumper way?  Even if I were to overclock by pin mod would the cooling be adequate at 3.0ghz?  I just search dell community forums for those older threads but there are 36000 results.  

contrvlr
5 Rhenium

Re: Overclocking XPS 420

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If that was the case the pin mod would not work and in fact it does. It does not affect the external bus it trick the processor into thinking the bus is higher.

 

Thanx Dave

 

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Davet50
7 Thorium

Re: Overclocking XPS 420

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Read THIS LINK

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Hanspuppa
4 Tellurium

Re: Overclocking XPS 420

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Hello contrvlr, It appears that we have missed the point here on the memory for the XPS 420. 

Or probably I may not have explained it as well as I should have.

let me try again. We first must remember that we are dealing with a Dell BIOS and Dell specified motherboard.

If it were not a Dell, then the CPU clock speed could be adjusted (overclocked) as wanted, within reason.

The memory speed would be allowed to be adjusted (timings and voltages) as needed, allowing for 1066 or 1333 memory speed.

But we are talking about a Dell specific motherboard and Dell coded BIOS.

We are talking about an entirely different system, that does not adjust or allow adjustments to the CPU or memory as a normal system would.

The Dell motherboard and/or BIOS is set to accept a CPU speed of 1333 and/or 1066 mhz, while the memory speed is locked to either 667 or 800, which ever you have installed.

The CPU/DRAM ratio is locked and not adjustable so the system BIOS can only read 800 and/or 667 mhz memory, regardless of whether you have a CPU with a 1333 or 1066 mhz speed installed.

The motherboard and/or BIOS can recogonize which CPU is installed and adjust the FSB accordingly, within the BIOS itself, but not by a manual setting, but the memory speed will still remain at 800 or 667, depending on the memory speed that is installed.

I hope I haven't mentioned anything that is not correct, because that is quite possible, but this is how I have been advised the Dell XPS 420 motherboard/BIOS handles the CPU and memory settings.

Again, it is totally unlike an ordinary motherboard with an ordinary Intel X38 chipset and BIOS.

Hope this helps.

Hanspuppa
4 Tellurium

Re: Overclocking XPS 420

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Thanks Davet50, for the useful link. The photograph of the BIOS shows the CPU speed at 1333 mhz and the memory speed at 800 mhz.

This should prove that overclocking the CPU to speeds above the normally rated 1066 mhz does not increase the memory speed as was the original question.

You can go to Radio Shack and purchase some conductive tape and make the jumper.

You would also need some material like conductive paste to insure contact between the reflective tape and the CPU pins.

This has been done by quite a few with success, but the CPU temps will rise, so this must be taken into account.

Hope this helps.

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Davet50
7 Thorium

Re: Overclocking XPS 420

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1. 60 is a bit high under load for a Q6600 but not so much a 3.0 a good heatsink will take care of that

2. Artic silver thermal paste is the way to go See HERE and HERE

3. Again this tricks the processor so there is not increase in voltage

4. I think that the link mentioned the material. You can find it at most automotive stores, radio shack most likely or google conductive ink pens

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contrvlr
5 Rhenium

Re: Overclocking XPS 420

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Again, it is totally unlike an ordinary motherboard with an ordinary Intel X38 chipset and BIOS.

 

Hi Hans,

I understand completely, you'll notice on the left that I have been here a little while. I have owned dozens of Dell's and been able to use the Clockgen software for overclocking a couple of them, never felt like messing with the pin mod due to the lack of control.

And if you look below, I do have some experience with overclocking non Dell boards.

 

Hope you don't mind the abbreviation

 

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Q9650 @ 4.05

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WD 640 Black

GTX 260 C216 @ 711/1533/1151

Antec TPN 750w

zrock_87
3 Argentum

Re: Overclocking XPS 420

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I'll be using stock cooling but from what I've heard dell btx design and cooling is adequate, right?  The guy who came up with this mod says during the thread that :

"make sure your CPU can do the stock multiplier x 333 at stock voltage, otherwise this mod would be useless to you."

1.     Does q6600 supports it?

2.     Will I be able to "take off" the conductive material if needed to?  Btw, I know someone who is good with the computers so I'm gonna ask for his help to do all of this soldering or what not but I wanna gain as much information as I can before I do this.  Thanks.

3.     I was also reading in the forum that there is no performance increase so why go through the trouble.  What difference would this mod make in terms of performance?  Here is a link:

http://www.xbitlabs.com/articles/cpu/display/core2duo-e6850_4.html#sect0 ?  emoticon.Wink.title

Please answer my last 3 questions as you did before so that I can make up my mind.  Thanks.  🙂

 

 

 

 

Hanspuppa
4 Tellurium

Re: Overclocking XPS 420

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I understand completely, you'll notice on the left that I have been here a little while. I have owned dozens of Dell's and been able to use the Clockgen software for overclocking a couple of them, never felt like messing with the pin mod due to the lack of control.

Hello contrvlr, Didn't mean to make it seem that you were a novice. Sorry if it came out that way.

I did some overclocking in the day of the Celeron 300 and never saw a need for it since.

I have been a member at the DCF since 2002, but under another name since the new DCF was so messed up, they didn't get my old login available and could not, or would not correct it.

I had to create a new login name in order to post.

I also have been around coumpters for over 28 years and currently have close to 100 Dell systems that I maintain and keep running for 4 companies and family, friends, and others.

While I do know a lot about computers, I don't know that much, when compared to those that do.

I have built 40-50 systems and repaired thousands over the years, and never had but one I could not get to work as it should.

It is the Dell XPS 420 I am now using. It has a Raid issue that corrupts the OS. Dell want admit it, but it exist.

I installed an add-on 4 port Raid card and resolved the Raid issue.

But that is not the topic. I do appreciate your input as it is very helpful to me as well as others.

Thank You for sharing your knowledge.

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