Processor (CPU)
CPU Name
Intel® Xeon® CPU E5540 @ 2.53GHz
Threading
1 CPU - 4 Core - 8 Threads
Frequency
4581.82 MHz (20 * 229.09 MHz) - Uncore: 3665.5 MHz
Multiplier
Current: 20 / Min: 12 / Max: 21
Architecture
Gainestown / Stepping: D0 / Technology: 45 nm
CPUID / Ext.
6.A.5 / 6.1A
IA Extensions
MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T, VT-x
Caches
L1D : 32 KB / L2 : 256 KB / L3 : 8192 KB
Caches Assoc.
L1D : 8-way / L2 : 8-way / L3 : 16-way
Microcode
Rev. 0xF
TDP / Vcore
80 Watts /
Type
Retail (Stock Frequency : 2533 MHz)
Cores Frequencies
#00: 4581.82 MHz  #01: 4581.82 MHz  #02: 4581.82 MHz  #03: 4581.82 MHz 
Motherboard
Model
Asus Rampage III Extreme
Socket
Socket 1366 LGA
North Bridge
Intel X58 rev 13
South Bridge
Intel 82801JR (ICH10R) rev 00
BIOS
American Megatrends Inc. 1401 (05/12/2011)
Memory (RAM)
Total Size
3064 MB
Type
Triple Channel (192 bit) DDR3-SDRAM
Frequency
916.4 MHz (DDR3-1832) - Ratio 2:8
Timings
9-9-9-24-1 (tCAS-tRCD-tRP-tRAS-tCR)
Graphic Card (GPU)
Storage (HDD/SSD)
Model #1
Intel Raid 0 Volume
Capacity #1
240 GB
Miscellaneous
Windows Version
Microsoft Windows XP Professional
CPU-Z Version
1.77.0 (32 bit)