LGA775 to LGA771 mod - Did it work for you?

Fumbles_22 · Jan 20, 2015

Hello,

I currently have an ASRock P5B-DE motherboard with an Intel Core 2 Quad 6600. I was thinking of upgrading my processor. My motherboard has an LGA775 socket.

One of my options is the QX9650. This processor has a speed of 3GHz and is LGA775. It also costs £125 on ebay.

I also saw an Intel Xeon E5450. This processor has a speed of 3Ghz, but is LGA 771. Apparently you can do a mod and get this to fit in an LGA775 socket. It only costs £39.58 from ebay.

The final option is an Intel Xeon x5460. This processor has a speed of 3.16GHz, and is also an LGA771. You can do the mod and get this to fit in an LGA771 socket. It costs £110 from this seller, but just £27 from this seller. I have no idea why the prices are so different.

I'd like to know if anyone has ever done this mod, and what their results were. It seems tempting since it's so cheap, but i've seen the mod (which involves using a knife and cutting the socket) and it seems so scary!

There's a video of someone here doing the mod:

https://www.youtube.com/watch?v=RzaQ4VRrXCU

Anyway, I look forward to any replies.

EDIT: This might help:

http://www.delidded.com/lga-771-to-775-adapter/3/

If you ctrl + f and look for "p5b-de" it says that my board is compatible with all Xeon processors. Am I reading this right?

I'd like to give this mod a try, but i'm a little scared about messing up my computer. I'm still on the fence, but hopefully some of your experiences will guide me.

herrwizo · Jan 20, 2015

I have done it a long time ago, and it indeed works. You need to have a compatible motherboard to start with, and you apparently do:

http://www.delidded.com/lga-771-to-775-adapter/3/#asus

(note: you said your mobo was asrock, it is most likely asus instead).

Cutting the socket is actually easy, you just remove a few bits of plastic. It will still work with any other regular CPU, you just have to be very careful with CPU orientation afterwards, since any CPU can fit several ways once you cut the socket. Basically, Xeon CPU needs a different orientation than your regular C2Q, and it cannot fit physically unless you cut the plastic bits.

Then you need a special foil which is made specifically for this mod.

Make sure you have the latest BIOS as well.

helpstar · Jan 20, 2015

@herrwizo
http://asrock.com/mb/Intel/P5B-DE/index.de.asp?cat=

the asrock is not tested on http://www.delidded.com/lga-771-to-775-adapter/3/#asrock
but most likely it´s a typing error and the P5D-BE should be your board and compatible with the mod

herrwizo · Jan 20, 2015

^^ Yeah, most likely. My bad

I have seen several posts online claiming this board works with the mod, so it should be fine.

Fumbles_22 · Jan 20, 2015

herrwizo :

I've just had a look at the box, and it says "ASRock P5B-DE".

It is a little weird since the website lists an "ASUS P5B-DE". I see what you mean about it being a typing error. If you type "ASUS P5B-DE" into google, it immediately comes up with the ASRock P5B-DE so someone has accidentally listed the board as ASUS when it should have been ASRock.

I'll sleep on it tonight and, if I muster the courage to go ahead with it, i'll order the Intel Xeon x5460 for £27.

I'll also order some of the sticky adapters for £2.70.

Finally, i'll need some new thermal compound for £1.15.

The total cost will be £30.85 which is one of the cheapest processor upgrades imaginable!

I'll leave my BIOS for the moment as well. The BIOS part of the ASRock website for the P5B-DE says not to change the BIOS if everything is working normally. Hopefully, the new processor will run out of the box. I can always update my BIOS if it doesn't.

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LGA775 to LGA771 mod - Did it work for you?

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