[MOD] LGA771 to LGA775 CPU modification tutorial

[Dabombinable]

effectively; yes.

 

not sure about the last part as most people buying oem computers never upgrade their cpu

OEM like to increase their profit margins, so cheap motherboard+ cheap CPU sold at a higher price=win for them

[Jumper118]

You can get X5450 from south Korea really cheap atm. just picked a second one up for £16.71 posted and its the e0 stepping as well  

[Dabombinable]

You can get X5450 from south Korea really cheap atm. just picked a second one up for £16.71 posted and its the e0 stepping as well

Lucky -I could only get the C0 stepping 

[Cheddle]

yeah its a pentium dual core... laaame.

 

only paid $30 for it - will resell.

[Dabombinable]

yeah its a pentium dual core... laaame.

 

only paid $30 for it - will resell.

You could always see how far the Pentium can be pushed. You should be able to fry the VRM if my P5K VM is anything to go by.

[Ortonbears]

I just placed my xeon x5460 with adapter strip into my asus p5kpl-am se mobo.

Delidded states that this CPU should have zero problems.

In Bios, the board is recognizing the xeon, but it's overheating something terrible.

Did i overlook something or did i get a bad CPU?

[Dabombinable]

I just placed my xeon x5460 with adapter strip into my asus p5kpl-am se mobo.

Diddled states that this CPU should have zero problems.

In Bios, the board is recognizing the xeon, but it's overheating something terrible.

Did i overlook something or did i get a bad CPU?

No, you just don't have the cooler mounted correctly or enough thermal paste. I myself have found that with LGA775 you always need to use a cooler that is attached to the motherboard with screws, clips of any kind don't have enough pressure..

[Ortonbears]

No, you just don't have the cooler mounted correctly or enough thermal paste. I myself have found that with LGA775 you always need to use a cooler that is attached to the motherboard with screws, clips of any kind don't have enough pressure..

[Ortonbears]

Thank you for your help.

I have a deep cool 200m coming. I will wait for that and the artic 5 before I boot again

[Dabombinable]

Thank you for your help.

I have a deep cool 200m coming. I will wait for that and the artic 5 before I boot again

Arctic Silver 5 thermal grease? If it was one of their coolers I'd say don't, my Arctic Freezer Pro 7 Rev 2.0 absolutely sucks compared to my Coolermaster Eclipse-which is far older, cost me the same and admittedly has a unique design and better build quality..

[iHardware Shelden]

I kind of want to go back to 775 in my main rig... the platform still blows my mind in terms of performance today and I want to see how my 760 pairs with the q6600 or q8300 

[Ortonbears]

Arctic Silver 5 thermal grease? If it was one of their coolers I'd say don't, my Arctic Freezer Pro 7 Rev 2.0 absolutely sucks compared to my Coolermaster Eclipse-which is far older, cost me the same and admittedly has a unique design and better build quality..

[Ortonbears]

I already have the artic silver thermal grease. The deep cool fan and heatsink was only $12. The mobo, RAM, case and PSU were free. $30 for the Xeon x5460 with the socket adapter strips and $21 for a GT 545. Trying to keep this build under $80 minus Windows of course.

[Ortonbears]

Cooler arrived.

Temps idle around 22°C.

Now I will attempt overclock.

Thanks for the help!!

[kirashi]

Hi. This is a quick guide on modding your LGA771 CPU into a fully LGA775 compatible state, we'll cover why you'd want to do this later. I'll start with the basics.

 

--SNIP--

 

Nice tutorial, brings me back to the LGA 775 days. It might be easier if you heat up the blade of a x-acto knife to cut off the notches. I thought about doing this years ago but never got around to it. I've have a P5N-D laying around that should work, other than the horrible voltage droop and not liking being run over 1700Mhz on the FSB with a dual and 1500Mhz with a quad, it wasn't a bad board.

 

 

Where does one acquire LGA775 Boards these days? eBay I'm guessing is the only option eh? I have a couple of Core 2 Q6600's lying around collecting dust.

[AMICLG]

Where does one acquire LGA775 Boards these days? eBay I'm guessing is the only option eh? I have a couple of Core 2 Q6600's lying around collecting dust.

Overclock.net BST is the only place you'll find a reasonably priced LGA 775 board these days. For some reason people on ebay think the boards are worth $80+ when you can buy a high-end Z87 Board for ~ $100 on OCN.

 

When I built my first pfSense box a while back I bought a MSI P45 chipset board, E8400, and a CoolerMaster 120mm low profile cooler for $40 shipped on OCN.

[harrynowl]

Where does one acquire LGA775 Boards these days? eBay I'm guessing is the only option eh? I have a couple of Core 2 Q6600's lying around collecting dust.

eBay or work for me

[Jerakl]

I legit never would of thought of doing this.

Cool stuff.

[Cheddle]

Just in case this isnt known - you can "overclock" basically all 771/775 chips that use 200/266/333 FSB as far as up to 400 FSB (provided your mobo supports it)

 

http://www.overclockers.com/intel-lga775-pad-modding/

 

The above article seems a little overcomplicated... But with a bit of google skillz you can find the exact process for your chip.

 

I clocked my e5430's from 2.66ghz (333mhz FSB) up to 3.2ghz (400mhz FSB) by covering ONE pin on the bottom of the CPU with sticky tape.

[Jumper118]

Just in case this isnt known - you can "overclock" basically all 771/775 chips that use 200/266/333 FSB as far as up to 400 FSB (provided your mobo supports it)

 

http://www.overclockers.com/intel-lga775-pad-modding/

 

The above article seems a little overcomplicated... But with a bit of google skillz you can find the exact process for your chip.

 

I clocked my e5430's from 2.66ghz (333mhz FSB) up to 3.2ghz (400mhz FSB) by covering ONE pin on the bottom of the CPU with sticky tape.

ok. so i will have to find out if my chipset supports it then. getting those dual x5460 in the sever would be beast!

[Cheddle]

ok. so i will have to find out if my chipset supports it then. getting those dual x5460 in the sever would be beast!

 

I replied in depth in the cinebench thread - the real winner chip for this mod is the X5470 - clocks to 4.0ghz with stickytape :-O

[Ortonbears]

EBay is going to be the safest bet, unless there's a thrift store near you that happens to have a core 2 duo PC

[Dabombinable]

EBay is going to be the safest bet, unless there's a thrift store near you that happens to have a core 2 duo PC

Well for me the local computer shop (or one of them) gave me my E8500 for $15. And there is only 1 for $9.50 USD atm, with others costing over $15 USD, so mine cost a lot less.

[Hamana]

Is doing this mod worth it? I can get the CPU Xeon E5450 and motherboard quite cheap < 70€.

How is the performance compared to i3, i5, i7?

[Jumper118]

Is doing this mod worth it? I can get the CPU Xeon E5450 and motherboard quite cheap < 70€.

How is the performance compared to i3, i5, i7?

yes . its about as fast as an i3, but has 4 real core, it can get up to near i5 performance when overclocked.