Originally posted by: GenTarkin
I am sure this has been done before...and talked about before on some forum somewhere, but I cant find it!
Does anyone have alink to a complete guide on how to do this...or if its even possible?
Problem is, I have EPOX 4PEA+ and I need the 4:5 memory setting and epox told me I will only see 3:4 and 1:1 with a 400mhz processor...so
I need 533mhz FSB out of this processor.
THANKS
Here are the instructions that I gave to someone else
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Below is the reply that I sent to another member. If you have any questions send me a PM on Saturday and I'll try to help you more. Let me know if you get it working in the mean while. Also, I was able to get this working today on the Dimension 4550 (with DDR) and I was able to get it working earlier in the week in the Dimension 8250 (with Rambus) that I got a week or so ago.
Both of the P4 1.8's that I got in the new systems were C1 steppings. However,neither one would run stable at 3 GHz but both will run at 2.4 GHz with stock voltage (I first tried them both in an Asus P4B533). I've only had enough time to mod one of them to work in the Dell system. The heatsink gets a bit hot when running Prime95 but no stability problems though. Please let me know the s-spec number on your chip (probably SL6LA), where it was made (Phili, Malay, CostaRica), and the FPO batch code (ie Q244A446-0517).
Here is the reply I sent to the other person.
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Hi,
I'm a bit short on time right now to explain it in much detal but I can briefly tell you what to do and then if you need further help I can give you more detailed instructions over the weekend.
What you need to do is insulate (or remove) pin AD6 which is also known as the BSEL0 pin. By insulating you prevent the pin from making contact inside of socket cover. Removing the pin will obviously void your warranty and you may screw yourself if you remove the wrong pin. I would recommend insulating the pin using a very thin plasic sleeve cut from an ATA66 (with 80 conductor strands) hard drive cable (the standard 40 pin cable is too big). What you need to do is shave off one of single strands and then remove the wire from the plastic sleeve. Then cut the plastic sleeve so that it about as long as one of the CPU pins. Then slip the plastic sleeve over the appropriate pin. You will probably need to use a small stick pin or sewing needle to initially widen the opening on the plastic sleeve so that it will fit over the CPU pin. Also, you will need to remove the plastic socket cover off the motherboard and then widen the appropriate pin hole because this plastic sleeve will probably be a bit too wide to fit through the pin hole on the sokcet. You can widen the hole using using a stick pin or sewing needle. Before putting the socket cover back on, make sure that the plastic sleeve fits through. To remove the slocket cover you will want to be careful and use some a very small screwdriver set (use the flat screwdrivers). DON'T TRY TO WIDEN THE HOLE WITHOUT TAKING THE SOCKET COVER OFF BECAUSE IF YOU STICK SOMETHING DOWN IN THE HOLE TO TRY AND WIDEN IT YOU MIGHT MESS UP THE CONTACTS INSIDE OF THE SOCKET.
In order to locate the pin, go to
this thread..
Please notice the notched corner in the bottom left side of both the picture and the diagram. You will need to have your CPU oriented this way as well.
Refer to the diagram. The pin you need to insulate is in the third row from the top and then the sixth pin from the left. Or if you use the pin labeled with the blue "0" as a reference point then you will need to go over one more pin to the right and then go down one pin.
TRY THIS AT YOUR OWN RISK. Please let me know how it goes.
Good luck!!
James