I ntel socket 775 Xeon X5450 x5450 No need adapter Quad-Core 3.0GHz 12MB 1333MHz works on LGA 775 mainboard - Price history & Review | AliExpress Seller - XL computer cpu Store | Alitools.io
Xeon - Wikipedia
Intel Xeon X5650 X5675 X5687 X5690 E5645 L5640 LGA 1366/Socket B CPU Processor | eBay