How to: LGA 775 BSEL Mod (Overclocking with tape!)

[oskarha]

Hello and welcome to my guide for performing the BSEL mod on your LGA 775 CPU. In this guide, I will focus on the easiest BSEL mod, the tape mod for 1066 MHz FSB CPUs.

 

Disclaimer:

Overclocking is never a guarantee, and it does not always work, for example, my Q6700 was not stable after I had performed the BSEL mod in my Dell OptiPlex 755.

A mod like this will most likely void your warranty, but this is LGA 775 we are talking about, so you probably don’t have that anyway.

I am not responsible for any damage to you/your equipment, proceed at your own risk.

 

A quick word on LGA 775 overclocking

With LGA 775 CPUs, we overclock by increasing the Front Side Bus (FSB). The front side bus is quad pumped; therefore, a 266 MHz is 1066 MHz effective. The frequency of a LGA 775 CPU is determined by its FSB speed multiplied by its multiplier.

FSB x Multiplier = Clock Speed

Example (Core 2 Duo E6600/Core 2 Quad Q6600):

266.66 MHz x 9 = 2400 MHz

For more details on LGA 775 overclocking, see this great guide by @harrynowl:

 

With the BSEL mod, we can raise the FSB of a 1066MHz CPU to 1333MHz, resulting in a 25% increase in clock speed.

Example (Core 2 Duo E6600/Core 2 Quad Q6600):

Before: 266.66 MHz x 9 = 2400 MHz

After:    333.33 MHz x 9 = 3000 MHz

 

All we need to do this is a tiny piece of tape!

Simply place a piece of tape above this pin on your 1066 FSB LGA 775 CPU:

 

 

Steps for how to perform the mod can be found at 0:38 in my video.

Materials needed (not really, but i reccomend having all this to make things easy):

• Tape
• Scissors
• 1066MHz FSB CPU
• Something pointy
• Tweezers
• Patience

 

If you want to see benchmarks for the performance gains, see 1:20 in the video.

 

 

Specs of the benchmarking rig:

MSI GTX 770 Gaming OC

ASUS P5Q Deluxe (P45)

8GB (4x2GB) DDR2 800MHz CL6

Kingston UV400 240GB (OS)

Seagate Barracuda 7200.12 750GB (Games)

Corsair TX750 (750W)

Windows 7 Ultimate x64

[glitchmaster0001]

Thats a pretty interesting mod. The only 775 mod i know is the 771 to 775 mod. the FSB mod is something completely new to me. I'll give that a try with my Q6700. hopefully bring that up to around 3.0GHz. 

[oskarha]

2 minutes ago, glitchmaster0001 said:

Thats a pretty interesting mod. The only 775 mod i know is the 771 to 775 mod. the FSB mod is something completely new to me. I'l give that a try with my Q6700 

As I mentioned in my post, the mod resulted in an unstable system for me with the Q6700 in my OptiPlex 755, however on my ASUS P5Q Deluxe it worked fine (auto voltage).

Tell me if you get it stable first try

[glitchmaster0001]

Just now, oskarha said:

As I mentioned in my post, the mod resulted in an unstable system for me with the Q6700 in my OptiPlex 755, however on my ASUS P5Q Deluxe it worked fine (auto voltage).

Tell me if you get it stable first try

I have a P5Q Premium board so I think it will most likely be stable. 

[oskarha]

Just now, glitchmaster0001 said:

I have a P5Q Premium board so I think it will most likely be stable. 

The BSEL mod it somewhat useless on an overclocking board like that though, its mainly for boards that dont overclock in the BIOS (Dell, HP etc.)

[glitchmaster0001]

3 hours ago, oskarha said:

The BSEL mod it somewhat useless on an overclocking board like that though, its mainly for boards that dont overclock in the BIOS (Dell, HP etc.)

but the Q6700 has a native 1066 FSB. I want to increase it to 1333MHz so its like an Q9560 with less l2 cache 

[oskarha]

Just now, glitchmaster0001 said:

but the Q6700 has a native 1066 FSB. I want to increase it to 1333MHz so its like an Q9560 with half the l3 cache 

Yes, but on a board like the P5Q Premium there is a setting for that in the bios. Just dial in 333MHz in the FSB setting and you're good to go.

[glitchmaster0001]

Just now, oskarha said:

Yes, but on a board like the P5Q Premium there is a setting for that in the bios. Just dial in 333MHz in the FSB setting and you're good to go.

ohhh i thought this mod will set the native FSB to 1333MHz instead of 1066. nvm then 

[oskarha]

Just now, glitchmaster0001 said:

ohhh i thought this mod will set the native FSB to 1333MHz instead of 1066. nvm then 

It will do that yes, until you set the AI tweaker setting to manual.

[Leonardo Corrales]

On 17/04/2017 at 8:14 PM, oskarha said:

Hello and welcome to my guide for performing the BSEL mod on your LGA 775 CPU. In this guide, I will focus on the easiest BSEL mod, the tape mod for 1066 MHz FSB CPUs.

 

Disclaimer:

Overclocking is never a guarantee, and it does not always work, for example, my Q6700 was not stable after I had performed the BSEL mod in my Dell OptiPlex 755.

A mod like this will most likely void your warranty, but this is LGA 775 we are talking about, so you probably don’t have that anyway.

I am not responsible for any damage to you/your equipment, proceed at your own risk.

 

A quick word on LGA 775 overclocking

With LGA 775 CPUs, we overclock by increasing the Front Side Bus (FSB). The front side bus is quad pumped; therefore, a 266 MHz is 1066 MHz effective. The frequency of a LGA 775 CPU is determined by its FSB speed multiplied by its multiplier.

FSB x Multiplier = Clock Speed

Example (Core 2 Duo E6600/Core 2 Quad Q6600):

266.66 MHz x 9 = 2400 MHz

For more details on LGA 775 overclocking, see this great guide by @harrynowl:

 

With the BSEL mod, we can raise the FSB of a 1066MHz CPU to 1333MHz, resulting in a 25% increase in clock speed.

Example (Core 2 Duo E6600/Core 2 Quad Q6600):

Before: 266.66 MHz x 9 = 2400 MHz

After:    333.33 MHz x 9 = 3000 MHz

 

All we need to do this is a tiny piece of tape!

Simply place a piece of tape above this pin on your 1066 FSB LGA 775 CPU:

 

 

Steps for how to perform the mod can be found at 0:38 in my video.

Materials needed (not really, but i reccomend having all this to make things easy):

• Tape
• Scissors
• 1066MHz FSB CPU
• Something pointy
• Tweezers
• Patience

 

If you want to see benchmarks for the performance gains, see 1:20 in the video.

 

 

Specs of the benchmarking rig:

MSI GTX 770 Gaming OC

ASUS P5Q Deluxe (P45)

8GB (4x2GB) DDR2 800MHz CL6

Kingston UV400 240GB (OS)

Seagate Barracuda 7200.12 750GB (Games)

Corsair TX750 (750W)

Windows 7 Ultimate x64

Hey , oskarha do you know if this will work on a LGA771 motherboard? thabk you 

[oskarha]

11 hours ago, Leonardo Corrales said:

Hey , oskarha do you know if this will work on a LGA771 motherboard? thabk you 

No I dont, but a quick google search should reveal the answer. You might also want to snip your quote because its so long (edit your post and replace the content of the quote with snip).

[Rextus]

Does this mod work for LGA 775 CPUs without a 1066 FSB like the Pentium e5200? (800 MHz for the e5200)

[oskarha]

1 hour ago, Rextus said:

Does this mod work for LGA 775 CPUs without a 1066 FSB like the Pentium e5200? (800 MHz for the e5200)

There are other similar mods for CPUs with 800MHz and 1333MHz FSBs.

[xSeaBassx]

I tried this with my Q8200 but got no result except the chip thinking it was on fire and fans at 100%

[oskarha]

1 minute ago, xSeaBassx said:

I tried this with my Q8200 but got no result except the chip thinking it was on fire and fans at 100%

Q8200 has a 1333MHz FSB, this mod only works with 1066MHz FSB CPUs (clearly stated in forum post and video description).

[Itsisntnick]

On 4/17/2017 at 2:33 PM, oskarha said:

As I mentioned in my post, the mod resulted in an unstable system for me with the Q6700 in my OptiPlex 755, however on my ASUS P5Q Deluxe it worked fine (auto voltage).

Tell me if you get it stable first try

Did you get it to work?

[reflectionxrage]

What is the similar mod for 1333mhz cpus?

[oskarha]

On 17.8.2018 at 7:01 AM, reflectionxrage said:

What is the similar mod for 1333mhz cpus?

From the pinned comment on the video:

"For any 1333MHz FSB CPU (eg. C2D E8400 C2Q Q9400) try this mod: http://www.xtremesystems.org/forums/showthread.php?232678-E8xxx-Q9xx0-FSB-1600-pin-mod"

Note that upping the FSB to 1600MHz requires the 1600MHz FSB to be natively supported by the board; I have only succeeded in making it work in an ASUS P5Q Deluxe, which already has OC options in the BIOS, rendering the mod useless on that board.

[PAR21VAL]

will this method damage any pins from motherboard because of tape? I wanna make sure that I would be able to use my pc if it became unstable due to overclock.

[oskarha]

5 minutes ago, PAR21VAL said:

will this method damage any pins from motherboard because of tape? I wanna make sure that I would be able to use my pc if it became unstable due to overclock.

The short answer is it will not damage the board if you do it properly, but:

On 4/17/2017 at 8:14 PM, oskarha said:

Disclaimer:

Overclocking is never a guarantee, and it does not always work, for example, my Q6700 was not stable after I had performed the BSEL mod in my Dell OptiPlex 755.

A mod like this will most likely void your warranty, but this is LGA 775 we are talking about, so you probably don’t have that anyway.

I am not responsible for any damage to you/your equipment, proceed at your own risk.

 

[Kieran878]

On 4/17/2017 at 7:14 PM, oskarha said:

Hello and welcome to my guide for performing the BSEL mod on your LGA 775 CPU. In this guide, I will focus on the easiest BSEL mod, the tape mod for 1066 MHz FSB CPUs.

 

Disclaimer:

Overclocking is never a guarantee, and it does not always work, for example, my Q6700 was not stable after I had performed the BSEL mod in my Dell OptiPlex 755.

A mod like this will most likely void your warranty, but this is LGA 775 we are talking about, so you probably don’t have that anyway.

I am not responsible for any damage to you/your equipment, proceed at your own risk.

 

A quick word on LGA 775 overclocking

With LGA 775 CPUs, we overclock by increasing the Front Side Bus (FSB). The front side bus is quad pumped; therefore, a 266 MHz is 1066 MHz effective. The frequency of a LGA 775 CPU is determined by its FSB speed multiplied by its multiplier.

FSB x Multiplier = Clock Speed

Example (Core 2 Duo E6600/Core 2 Quad Q6600):

266.66 MHz x 9 = 2400 MHz

For more details on LGA 775 overclocking, see this great guide by @harrynowl:

 

With the BSEL mod, we can raise the FSB of a 1066MHz CPU to 1333MHz, resulting in a 25% increase in clock speed.

Example (Core 2 Duo E6600/Core 2 Quad Q6600):

Before: 266.66 MHz x 9 = 2400 MHz

After:    333.33 MHz x 9 = 3000 MHz

 

All we need to do this is a tiny piece of tape!

Simply place a piece of tape above this pin on your 1066 FSB LGA 775 CPU:

 

 

Steps for how to perform the mod can be found at 0:38 in my video.

Materials needed (not really, but i reccomend having all this to make things easy):

• Tape
• Scissors
• 1066MHz FSB CPU
• Something pointy
• Tweezers
• Patience

 

If you want to see benchmarks for the performance gains, see 1:20 in the video.

 

 

Specs of the benchmarking rig:

MSI GTX 770 Gaming OC

ASUS P5Q Deluxe (P45)

8GB (4x2GB) DDR2 800MHz CL6

Kingston UV400 240GB (OS)

Seagate Barracuda 7200.12 750GB (Games)

Corsair TX750 (750W)

Windows 7 Ultimate x64

Alright mate, I'm wondering if there are any motherboards that won't work with this. I have a DQ35MP motherboard and if I was to do this with a Q6600 would it work? 

[oskarha]

1 minute ago, Kieran878 said:

Alright mate, I'm wondering if there are any motherboards that won't work with this. I have a DQ35MP motherboard and if I was to do this with a Q6600 would it work? 

You might as well try. The mod should work on all board that support a 1333MHz FSB (and your board seems to do that).

[Kieran878]

On 10/13/2019 at 4:35 PM, oskarha said:

You might as well try. The mod should work on all board that support a 1333MHz FSB (and your board seems to do that).

Ah ok thanks for that I'll give it a go. 

[Katerang31]

It did not change anything.. still 2.4GHz

i also have an Q6600..Asrock G41C-GS R2.0 mobo using 2x4GB DDR2 800 pc2-6400

should i change the FSB1 Jumper to the DDR3 ?

should i change and what should i change something in the BIOS?

[B Bergen]

On 3/17/2018 at 2:24 PM, oskarha said:

There are other similar mods for CPUs with 800MHz and 1333MHz FSBs.

I have a q8400, so that means I could overclock it?