Processor (CPU)
CPU Name
Intel® Core™ i5-2557M CPU @ 1.70GHz
Threading
1 CPU - 2 Core - 4 Threads
Frequency
2399.44 MHz (24 * 99.98 MHz)
Multiplier
Current: 24 / Min: 8 / Max: 27
Architecture
Sandy Bridge / Stepping: D2 / Technology: 32 nm
CPUID / Ext.
6.A.7 / 6.2A
IA Extensions
MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T, VT-x, AES, AVX
Caches
L1D : 32 KB / L2 : 256 KB / L3 : 3072 KB
Caches Assoc.
L1D : 8-way / L2 : 8-way / L3 : 12-way
TDP / Vcore
17 Watts / 1.076 Volts
Temperature
78 °C / 172 °F
Type
Retail (Stock Frequency : 1700 MHz)
Cores Frequencies
#00: 2399.44 MHz  #01: 2399.44 MHz 
Motherboard
Model
Apple Inc. Mac-742912EFDBEE19B3
Socket
Socket 1023 FCBGA
North Bridge
Intel Sandy Bridge rev 09
South Bridge
Intel QS67 rev B3
BIOS
Apple Inc. MBA41.88Z.0077.B14.1510261805 (10/26/2015)
Memory (RAM)
Total Size
4008 MB
Type
Dual Channel (128 bit) DDR3-SDRAM
Frequency
666.5 MHz (DDR3-1334) - Ratio 1:5
Timings
9-9-9-24-1 (tCAS-tRCD-tRP-tRAS-tCR)
Graphic Card (GPU)
GPU Type
Intel(R) HD Graphics 3000 (Sandy Bridge) @ 349 MHz
GPU Brand
0x106B (0x00EB)
Storage (HDD/SSD)
Model #1
APPLE SSD SM256C
Capacity #1
251 GB
Display
Screen #1
Apple Computer Color LCD (APP9CDF)
Screen #1 Spec
13.4 inches (34 cm) / 1440 x 900 pixels @ 0-0 Hz
Miscellaneous
Windows Version
Microsoft Windows 10 (10.0) Professional 64-bit
CPU-Z Version
1.80.1 (64 bit)