The same old sh*t to start a new thread for 'wyt' ( 'wytiwx' ).
The same old sh*t to start a new thread for 'wyt' ( 'wytiwx' ).
Team China
THX, man. I'm coming.
I think I love the old school overclocking things, the first step was Celeron D, now this is the second step.
LGA771 CPU for LGA775 Mobo mod is not my original thing, I just do this for interest, and I mean no offense.
We know that many LGA771 CPU s and LGA775 CPU s were made from same wafer.
They can have the same CPUID, same stepping, same cache size, same CPU Features, even same FSB and Freq, the only one different thing is Socket type.
So it's not so difficult for LGA771 CPU to work on LGA775 Mobo, right?
This is top view of two CPU.
The bottom view
Processor Land Coordinates
See? Most of Socket Pins are the same definitions, functions and positions.
That's the good news to mod work.
Next step is to check socket pin land assignment one by one.
There are about 76 different pins between LGA771 and LGA775, but many pins are 'RESERVED', 'TSETHI', 'COMP' and 'FCxx' pins, which can be ignored in many cases.
LGA775 socket have 8 pins more than LGA771 socket, these pins are Power pins, like VCC, VSS, VTT.
LGA771 socket have 4 pins more than LGA775 socket, these pins are Power pins too.
It doesn't matter for losing some Power pins.
According to someone's testing result, the most important pins are two address pins:
For LGA771 CPU, land name A3# is Execute BIST (Built-In Self Test), it's pin No. M5 on LGA771, but this A3# pin is pin No. L5 on LGA775.
So the key is to exchange pin M5 and L5. Thank God, pin M5 is adjacent to L5.
Get this done first!
You keep blowing my mind with these kind of things man...In before greatness
Old, but still charming.Originally Posted by Ivanlabrie
You keep blowing my mind with these kind of things man...In before greatness
Here we go.
LGA771 CPU Pinmod first.
Second thing is LGA775 Mobo mod.
Third thing is to use software like CBROM (for Award BIOS) or MMTOOL (for AMI BIOS) to check your Mobo's BIOS, find if BIOS has the CPUID of LGA771 CPU.
In many cases, the Mobo already has many CPUID codes, I won't take my time to explain how to check and insert the CPUID codes.
You can get more info about LGA771 CPU in this website: http://www.cpu-world.com/
What am I waiting for? Nothing.
Go go go!
Last edited by wytiwx; 04-01-2013 at 08:58 AM.
Work by wytiwx, using Intel LGA775 stock air cooler.
Intel Xeon 5050 http://www.cpu-world.com/CPUs/Xeon/I...5555050P).html
Valid URL: http://valid.canardpc.com/show_oc.php?id=2752641
Work by wytiwx, using Intel LGA775 stock air cooler.
Intel Xeon 5110 http://www.cpu-world.com/CPUs/Xeon/I...5565110P).html
FSB 585 done, Mobo limit, I think.
Valid URL: http://valid.canardpc.com/show_oc.php?id=2752349
Work by wytiwx, using Intel LGA775 stock air cooler.
Xeon X5260 http://www.cpu-world.com/CPUs/Xeon/I...73KJ0936M.html
Take a break
Last edited by wytiwx; 04-10-2013 at 05:42 AM.
Work by thepounds.
Work by ban.
Mobo: P5K-E/AP-WiFi.
Work by lx2010.
I will make some Extreme Cooling result when I get back to my lab.
Wow you guys are going super hard on 775, pin modding and all.
I am sure the 771 cpus have to be pretty cheap nowadays.
I've seen refurbed 771 quad cores(E5405-5440) for 13-19.99 per chip. E5450-X5472's range from 40-100 per chip. I managed to snag a pair of used X5472's for $40 on eBay, but that was just a very lucky snag.
Desktop rigs:
Oysterhead- Intel i5-2320 CPU@3.0Ghz, Zalman 9500AT2, 8Gb Patriot 1333Mhz DDR3 RAM, 120Gb Kingston V200+ SSD, 1Tb Seagate HD, Linux Mint 17 Cinnamon 64 bit, LG 330W PSU
Flying Frog Brigade-Intel Xeon W3520@2.66Ghz, 6Gb Hynix 1066Mhz DDR3 RAM, 640Gb Hitachi HD, 512Mb GDDR5 AMD HD4870, Mac OSX 10.6.8/Linux Mint 14 Cinnamon dual boot
Laptop:
Colonel Claypool-Intel T6600 Core 2 Duo, 4Gb 1066Mhz DDR3 RAM, 1Gb GDDR3 Nvidia 230M,240Gb Edge SATA6 SSD, Windows 7 Home 64 bit
Xeon 5110 FSB 595MHz done. Should try a P45 board, I think.
Valid URL: http://valid.canardpc.com/show_oc.php?id=2754732
I love your threads wytiwx, knowledge sharing at its finest!
Overclocking, it's a lifestyle
Some slow 771 chips (Like E5110) were hard to sell when I had bulk server chips even 4-5 years ago for ~$15-20 a pop.
They don't even list them anymore on eBay much it looks like, but I have contacts that will sell for $1/ea.
i5 2500K @ 4.9GHz+ 8GB G-Skill RipJaws DDR3-2000 @1600Mhz CAS 6 Asus P8P67 Pro CrossFire 6970's @ 950/1450
Xeon X5677 @ 4.5Ghz 6GB G-Skill RipJaws DDR3-2000 @1600Mhz CAS 7 Gigabyte EX58-UD5 4870x2
i7-880 @ 4.2Ghz+ (still playing) 4GB G-Skill RipJaws DDR3-2000 @2300Mhz CAS 9 Asus Maximus III Formula MSI Hawk 5770
THX, man.I love your threads wytiwx, knowledge sharing at its finest!
Overclock everything!
Yep, for many friends, it's not so easy to get LGA771 CPU s nowadays.
Lucky I'm in China, a magical place
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