Lenovo ThinkCentre M58p

Form Factor: MicroATX (244 x 244 mm)
Socket Type: LGA 775
Chipset: Intel Q45 (Eaglelake-Q)
Processor Support: Intel Core 2 Duo, Core 2 Quad, Pentium Dual-Core, and Celeron processors
Memory: Up to 8GB DDR3-1066 MHz UDIMM RAM across four DIMM slots
Expansion Slots:
1 x PCI Express x16
1 x PCI Express x1
2 x 32-bit PCI
Storage Connectors:
3 x SATA II
1 x eSATA II
I/O Ports:
1 x VGA
1 x DisplayPort
10 x USB 2.0
1 x PS/2 keyboard
1 x PS/2 mouse
1 x Parallel
2 x Serial
1 x 3.5mm Audio Combo
1 x Floppy interface
1 x RJ45 Ethernet
Audio: Integrated Analog Devices AD1882 (SoundMAX HDA)
Video: Integrated Intel GMA 4500
Networking: Integrated Intel 82567LM Gigabit Ethernet PHY
Power Connectors: 24-pin ATX and 4-pin P4

Intel Core 2 Quad Q6600

Architecture: 65nm
Cores: 4
Threads: 4
Base Clock Speed: 2.4 GHz
Front Side Bus (FSB): 1066 MHz
Cache:
L2 Cache: 8MB (shared, 2MB per core)
TDP (Thermal Design Power): 105W
Socket: LGA 775
Max. Memory Supported: 8GB DDR2-800/533 or DDR3-1333 (depends on motherboard support)
Instruction Set: 64-bit
Processor Technology:
Enhanced Intel SpeedStep Technology
Intel Virtualization Technology (VT-x)
Intel Thermal Monitoring Technologies
Intel Wide Dynamic Execution