LGA 1366
The LGA 1366 platform (another name for Socket B) replaced LGA 771/775 in 2008, and in 2011 it was replaced by LGA 2011.

Best XEON-Analogs of Intel Core i7

You don't need to flash custom bios.
But check the motherboard CPU list before.
XEON X3440
XEON X3450
XEON X3460
XEON X3470
Lithography
45 nm
45 nm
45 nm
45 nm
Cores\Threads
4\8
4\8
4\8
4\8
Base frequency
2.53 GHz
2.66 GHz
2.8 GHz
2.93 GHz
Max with Turbo Boost
2.93 GHz
3.2 GHz
3.46 GHz
3.6 GHz
Bus speed
1333 MHz
1333 MHz
1333 MHz
1333 MHz
TDP
95 W
95 W
95 W
95 W
Max. temp.
72 °C
72 °C
72 °C
72 °C
Approximate analogue
Core I7 860S
-
Core I7 860
Core I7 870
Estimated cost
$9
$10
$16
$19
Link to a verified store on Ali. with more CPUs
Made on
Tilda