Hello,
These are the compatible processors for your unit:-
Athlon 64 X2 Dual-Core 4800+ Processor (2.5-GHz, 2x512K L2 cache, 2000-MHz FSB)
Athlon 64 X2 Dual-Core 5000+ Processor (2.6-GHz, 2x512K L2 cache, 2000-MHz FSB)
AMD Athlon X2 5000B Processor (2.6-GHz, 1MB L2 cache, HT bus 2.0)
Athlon 64 X2 Dual-Core 5200+ Processor (2.6-GHz, 2x1MB L2 cache, 2000-MHz FSB)
AMD Athlon X2 5200B Processor (2.7-GHz, 1MB L2 cache, HT bus 2.0)
AMD Athlon X2 5400B Processor (2.8-GHz, 1MB L2 cache, HT bus 2.0)
Athlon 64 X2 Dual-Core 5600+ Processor (2.8-GHz, 2x1MB L2 cache, 2000-MHz FSB)
Athlon 64 X2 Dual-Core 6000+ Processor (3.0-GHz, 2x1MB L2 cache, 2000-MHz FSB)