Processor (CPU)
CPU Name
Intel® Core™ i5-4258U CPU @ 2.40GHz
Threading
1 CPU - 2 Core - 4 Threads
Frequency
2893.1 MHz (29 * 99.76 MHz) - Uncore: 2893.1 MHz
Multiplier
Current: 29 / Min: 8 / Max: 29
Architecture
Haswell ULT / Stepping: C0 / Technology: 22 nm
CPUID / Ext.
6.5.1 / 6.45
IA Extensions
MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T, VT-x, AES, AVX, AVX2, FMA3
Caches
L1D : 32 KB / L2 : 256 KB / L3 : 3072 KB
Caches Assoc.
L1D : 8-way / L2 : 8-way / L3 : 12-way
Microcode
Rev. 0x1C   ► Intel SA-00233 Vulnerable ◄
TDP / Vcore
28 Watts / 0.924 Volts
Temperature
55 °C / 131 °F
Type
Retail (Stock Frequency : 2400 MHz)
Cores Frequencies
#00: 2893.10 MHz  #01: 2893.10 MHz 
Motherboard
Model
LENOVO Lancer 5A2
Socket
Socket 1168 BGA
North Bridge
Intel Haswell-ULT rev 09
South Bridge
Intel H8x/P8x rev C1
BIOS
LENOVO 9CCN26WW (07/31/2014)
Memory (RAM)
Total Size
8192 MB
Type
Dual Channel (128 bit) DDR3-SDRAM
Frequency
798.1 MHz (DDR3-1596) - Ratio 1:6
Timings
11-11-11-28-1 (tCAS-tRCD-tRP-tRAS-tCR)
Slot #1 Module
Hyundai Electronics 4096 MB (DDR3-1600) - P/N: HMT351S6CFR8C-PB
Slot #2 Module
Hyundai Electronics 4096 MB (DDR3-1600) - P/N: HMT451S6BFR8A-PB
Graphic Card (GPU)
GPU #1 Type
Intel(R) Iris(TM) Graphics 5100 @ 598 MHz
GPU #1 Brand
Lenovo
GPU #2 Type
NVIDIA GeForce GT 820M
GPU #2 Brand
Lenovo
GPU #2 VRAM
2048 MB
Storage (HDD/SSD)
Model #1 Name
Seagate ST500LT012-1DG142 (FW: 0002LVM1)
Model #1 Capacity
465.8 GiB (~500 GB)
Model #1 Type
Fixed - Bus: SATA (11)
Miscellaneous
Windows Version
Microsoft Windows 8.1 (6.3) Professional 64-bit
CPU-Z Version
1.85.0 (64 bit)