MOTHERBOARD cpu capacity (HP ELITE 8000 SFF)

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Leonard_3

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Nov 30, 2015
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Can my motherboard(HP ELITE 8000 SFF) work and use the (INTEL XEON L5420 2.5GHz/12M/1333Mhz/CPU equal to LGA775 Core 2 Quad Q9650 CPU)
Here is my motherboard cpu capacity list
Intel Core 2 Quad Q8400 Processor
2.66 GHz, 4M L2 cache, 1333 MHz FSB

Intel Core 2 Quad Q8400s Processor (low power)
2.66 GHz, 4M L2 cache, 1333 MHz FSB

Intel Core 2 Quad Q9505 Processor
2.83 GHz, 6M L2 cache, 1333 MHz FSB with vPro Technology

Intel Core 2 Quad Q9505s Processor (low power)
2.83 GHz, 6M L2 cache, 1333 MHz FSB with vPro Technology

Intel Core 2 Quad Q9550 Processor
2.83 GHz, 12M L2 cache, 1333 MHz FSB with vPro Technology

Intel Core 2 Quad Q9550s Processor (low power)
2.83 GHz, 12M L2 cache, 1333 MHz FSB with vPro Technology

Intel Core 2 Quad Q9650 Processor
3.0 GHz, 12M L2 cache, 1333 MHz FSB with vPro Technology
 
Solution
Phillip Corcoran
Intel Xeon L5420 CPU needs an LGA771 socket, but your HP motherboard has an LGA775 socket.

Therefore the Xeon L5420 will not fit.

That's why it is not listed on HP's processor options page for that PC model.
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Vincent12

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Nov 29, 2014
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L5420 has socket 771

There's an adapter mod for 775-to-771 modavailable since a few years. Socket 775-to-socket -771 adapter.
http://www.delidded.com/lga-771-to-775-adapter/

Not all Intel chipsets on 775 support Xeons 5xxx Harpertown like a Xeon L5420.
Your HP Elite unfortunately has an incompatible chipset. That has Intel Q45.

Intel Q45, Q43, Q41, Q35, Q33, Q31 chipsets don't support Xeon 5xxx series.
And even a Xeon X3363 with LGA775 failed.

http://www.delidded.com/
http://www.delidded.com/lga-771-to-775-adapter/2/

https://en.wikipedia.org/wiki/LGA_775
"An examination of the relevant Intel data sheets shows that LGA 775 which is used for consumer level desktops and LGA 771 used for (Xeon based) workstation and server class computers appear to differ only in the placement of the indexing notches and the swap of two address pins. Many pins devoted to functions such as interfacing multiple CPUs are not clearly defined in the LGA 775 specifications, but from the information available appear to be consistent with those of LGA 771. Considering that LGA 775 predated LGA 771 by nearly a year and a half, it would seem that LGA 771 was adapted from LGA 775 rather than the other way around. In fact, using an adapter does allow LGA 771 processors to be used with LGA 775 motherboards.[4]"
 
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Vincent12

Reputable
Nov 29, 2014
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4,510
Intel X48 and X38 chipsets mostly do not support Xeons 771 at all, too!!
Older chipsets like 965P with limited FSB speed eventually.
See list of tested motherboards also.
http://www.delidded.com/lga-771-to-775-adapter/3/#motherboard-compatibility-table

Other boards not in the list with P35, P45, P43, G45, G43, G41 chipset will most likely work with Xeon 5xxx too.
Mikrocode update necessary to unlock all features/cpu instructions like VT-x, Speedstep and sse 4.2.

http://www.delidded.com/lga-771-xeon-microcode/

Find out the CPUID of your CPU: www.cpu-world.com
http://www.cpu-world.com/CPUs/Xeon/Intel-Low%20voltage%20Xeon%20L5420%20-%20EU80574JJ060N%20-%20AT80574JJ060N%20%28BX80574L5420A%29.html

All Intel Microcodes of many Intel processors like Xeon L5420/L5430/E5450, Core2 Quad/Duo, Core i5/i7 etc. till 2015. Xeon socket 771 microcodes included!
https://downloadmirror.intel.com/24616/eng/microcode-20150107.tgz

---

http://www.win-raid.com/t1026f16-I-have-a-question-about-intel-cpu-microcode-update.html
http://www.smartredirect.de/redir/clickGate.php?u=CHoN7d6s&m=1&p=3r6MDbeCf4&t=6QdegMhg&st=&s=&splash=2&url=http%3A%2F%2Fwww.elhvb.com%2Fmboards%2Fwimsbios%2Fmicrodecode.rar&r=http%3A%2F%2Fwww.win-raid.com%2Ft1026f16-I-have-a-question-about-intel-cpu-microcode-update.html

sha1sum "microdecode.rar":
f967b4a7e34a03d0f4f8506fbb715f56d4315feb microdecode.rar

sha1sum from content within"microdecode.rar":
7713a1753ce88f2c7e6b054ecc8e4c786df76300 gpl3.txt
160ed411667a22e909709d6a716101cd4d542f8b microdecode.c
89075cca66a98af0507b740fd73f3cb897a4fdb6 microdecode.exe

"microdecode.exe" is a tool to extract all Intel cpu-microcodes from microcode.dat file
microcode.dat compressed within microcode-20150107.tgz
Decompress microcode-20150107.tgz with your suitable decompression program.
Then Run.
microdecode.exe microcode.dat
(within a command shell cmd.exe) to get all microcode *.bin files:
microdecode.exe must be put or moved into the same directory as microcode.dat!!
 
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