Processor (CPU)
CPU Name
AMD Athlon™ II X4 638 Quad-Core Processor
Threading
1 CPU - 4 Core - 4 Threads
Frequency
3992.62 MHz (40 * 99.82 MHz)
Multiplier
Current: 40 / Min: 8 / Max: 40
Architecture
Llano / Stepping: LN1-B0 / Technology: 32 nm
CPUID / Ext.
F.1.0 / 12.1
IA Extensions
MMX(+), 3DNow!(+), SSE, SSE2, SSE3, SSE4A, x86-64, AMD-V
Caches
L1D : 64 KB / L2 : 1024 KB
Caches Assoc.
L1D : 2-way / L2 : 16-way
TDP / Vcore
76.05 Watts / 1.412 Volts
Temperature
29.1 °C / 84 °F
Type
Retail (Stock Frequency : 4000 MHz)
Cores Frequencies
#00: 3992.6 MHz  #01: 3992.6 MHz  #02: 3992.6 MHz  #03: 3992.6 MHz 
Motherboard
Model
LENOVO Armorhead CRB
Socket
Socket FM1 (905)
North Bridge
AMD K12 Bridge rev 00
South Bridge
AMD A75 FCH rev 2.3
BIOS
LENOVO E1KT30AUS (06/11/2012)
Memory (RAM)
Total Size
6144 MB
Type
DDR3-SDRAM
Frequency
665.4 MHz (DDR3-1330) - Ratio 3:20
Timings
9-9-9-24-33 (tCAS-tRCD-tRP-tRAS-tRC)
Slot #1 Module
- P/N: HMT325S6CFR8C-H9
Slot #2 Module
- P/N: NT4GC64B88B0NS-DI
Graphic Card (GPU)
GPU Type
AMD Radeon HD 7450A Graphics @ 625 MHz
GPU Brand
Lenovo
GPU VRAM
512 MB @ 800 MHz
Storage (HDD/SSD)
Model #1
Western Digital WDC WD5000AAKX-083CA1
Capacity #1
500 GB
Display
Screen #1
B325 (QWA3602)
Screen #1 Spec
23.1 inches (58.7 cm) / 1920 x 1080 pixels @ 56-75 Hz
Miscellaneous
Windows Version
Microsoft Windows 7 (6.1) Ultimate Edition 64-bit
CPU-Z Version
1.78.1 (64 bit)