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Discussion Starter · #1 ·
BSEL & VID Mod Guide

This mod applies to most, if not all, Intel socket 775 CPU's that use a 800MHz or 1066MHz FSB.

What is a BSEL mod?

A BSEL mod allows a CPU to be run at a higher speed via hardware modification, without changing any settings in software (Either the BIOS or via software such as SetFSB). Most motherboards (See notes for more about this) use voltage/ground from the pins on a CPU to determine the CPU's FSB. The idea of a BSEL mod is to physically connect pins on a CPU, to make the motherboard 'think' that the CPU has a higher FSB than it actually does.

For example, the Intel Pentium Dual Core E2160 CPU (1.8GHz) has an FSB at 800MHz, a bus speed of 200MHz and a multiplier of 9 to give the CPU its speed of 1.8GHz (200 x 9). Now, if the pins on the CPU are connected like a CPU with a FSB of 1066MHz, the bus speed would now be 266MHz, and the CPU would now run at 2.4GHz (266 x 9).

Why would I need to do this?

If you're motherboard can overclock your CPU from the BIOS, you probably don't need a BSEL mod. However, for motherboards that have no overclocking settings, like OEM motherboards, this is a simple method of overclocking a CPU. Alternatively, if your motherboard's BIOS has difficulty overclocking, the mod is a simple way to increase the CPU speed.

How do I do the mod?

To connect the pins on the CPU you will need:

Conductive ink pen or copper tape
Electrical tape
Patience

Connecting the pins:

Refer to the diagrams in this guide to make sure you're connecting the right pins. Then, mask the pins you aren't connecting with electrical tape, this isn't 100% necessary but makes the job of connecting pins much easier. Connect the desired pins using the conductive ink pen, go grab a drink and a sandvich, and by the time you get back the ink should have dried.

BSEL mod diagrams







VID Mod

The VID mod is similar to the BSEL mod, but instead of increase the CPU's frequency, it increases the voltage; it is done in the same way as the BSEL mod.

VID mod diagrams (GREEN = COVER)





Notes

•This is still an overclock, so it would be wise to stress test using Orthos, Prime95 Etc.
•To reverse the mod, simple remove the pin connections.
•It may be necessary to reset the BIOS to apply the mod.
•Intel Speedstep still works with the mod applied.
•Some motherboards use the CPUID to calculate the CPU FSB and not the pins, this mod WILL NOT work on these motherboards.

Acknowledgements:

Dasparx
VR-Zone
 

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i have Abit i45c mobo with 945gc chipset, but when i install the E2160 which i bsel mod to 1333fsb,..... the mobo only recognise 266/1066fsb at 2.4ghz...why? please advice!!!!! Thanks!!!
 

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Discussion Starter · #4 ·
Quote:

Originally Posted by Donovantys View Post
i have Abit i45c mobo with 945gc chipset, but when i install the E2160 which i bsel mod to 1333fsb,..... the mobo only recognise 266/1066fsb at 2.4ghz...why? please advice!!!!! Thanks!!!
Just looked at the specs of that board:

Quote:
Front Side Bus 1066MHz
800MHz
533MHz
It only support FSB's up to 1066 and doesn't support 1333 so thats why its only booting with @ 1066.
 

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Discussion Starter · #6 ·
Quote:

Originally Posted by Donovantys View Post
which one is the real E2160 mod to 1333fsb
Both do the same thing, as they both connect BSEL2 to VSS (ground) they just do it differently. But niether will work on your motherboard, you best option would be to use the 1066 bsel then manually raise the FSB in your bios and you may be able to get to 1333 that way.
 

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But the manual say it FSB1333 cpu will operate in overclocking mode, doesn't that mean 1333 is supported???

Specifications
CPU LGA755 Socket for Intel® Core™ 2 Duo/ Pentium® Dual-Core/ Pentium® D/ Pentium® 4/ Celeron® D Processors with 1333*/1066/800/533 MHz FSB
*(FSB1333 CCPU will operate in over-clocking mode. Under this situation, PCIE frequency will also be over-clocked to 115MHz.)
Supports Intel® Hyper-Threading Technology
 

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Discussion Starter · #8 ·
Quote:

Originally Posted by Donovantys View Post
But the manual say it FSB1333 cpu will operate in overclocking mode, doesn't that mean 1333 is supported???

Specifications
CPU LGA755 Socket for Intel® Core™ 2 Duo/ Pentium® Dual-Core/ Pentium® D/ Pentium® 4/ Celeron® D Processors with 1333*/1066/800/533 MHz FSB
*(FSB1333 CCPU will operate in over-clocking mode. Under this situation, PCIE frequency will also be over-clocked to 115MHz.)
Supports Intel® Hyper-Threading Technology
I had an Asrock board that used the 945 chipset, which also said it supports 1333 in overclocking mode and it did the exact same thing. The 1333 BSEL mod will only work on motherboards that support 1333 FSB's natively, and the 945 chipset only supports upto 1066 natively. Although, I managed 3Ghz on my old Asrock board by doing the 1066 BSEL then overclocking in the bios and abit boards are much better than Asrock so you should be able to do the same.
 

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The abit i45c doesn't support bios overclocking, so i have to do it in window, is there any good overclocking software you can recommend.. thanks alot
 

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Discussion Starter · #11 ·
Quote:

Originally Posted by Donovantys View Post
The abit i45c doesn't support bios overclocking, so i have to do it in window, is there any good overclocking software you can recommend.. thanks alot
Here's a list of programs which include overclocking in windows tools, although I've never had any luck with any of them.

Quote:

Originally Posted by redsunx View Post
Kick ass!
Thanks
 

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Discussion Starter · #15 ·
Quote:

Originally Posted by dasparx View Post
Thx mate

Nice guide anyways, and you could maybe add the info about 1333 'oc' Boards, and that Mobo's with SiS chipsets will most likely not work with the bsel mod.
Good point, I'll add that about 'overclocking mode' boards. I've got an MSI board somewhere which has an SiS chipset I'll go dig it out and test it.

Edit: Board is that old it doesn't support anything newer than a pentium D.
 

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Dear Joe,

I want to start off by saying I am a modding fool.I have modded lots of things in the past from cd players to cpu's to mobo's to Graphics cards and all sorts......ect...

I took a look at ur mod and thought to myself,"I'll give it a shot!".So i did,and as sad as it may be this mod did not work for my E8400 45nm Wolfdale.

However,ur mod doesnt say weather not to cover the exposed pins on the LGASOCKET 775 or just let them connect to the cpu,so i just went with what is fact.You didnt say to so i didnt lol! . But i will send u some pics of what i did and i would REALLY like for you to help me out.
so plz reply to this message ANYONE and help a fellow extremest!

P.S. I USED A SILVER CONDUCTIVE PEN TO WRITE THE TRACE OVER THE TWO PADS.

You can email me anytime at: [email protected] Thanks in advance

This is my first time submitting a post here.But I have read lots of forums and posts from many of the users here.I want you all to know that i visit like a bazzillion sites and I like the posts here the best!

Also I was going for a 1600 (400x9) from a 1333 to acheve a 3.6 However i just wanted to reach 5.0Ghz. considering i have already had it to 4.88Ghz.
LL
LL
LL
 

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Discussion Starter · #20 ·
For starters, welcome to the forum.

I'm a little confused about what you're trying to do here, are you trying to BSEL from 1333 to 1600? I'm not familiar with that mod, and i've never used an E8xxx CPU so I'm not sure how it would work on a wolfdale. And 4.88Ghz is a very good overclock, so is a BSEL mod really necessary.

On the plus side, your method is fine, it doesn't matter if the pins are covered, as long as they are connected.

And who's Joe?
 
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