AMD Athlon X4 840

General information
Type CPU / Microprocessor
Market segment Desktop
Family AMD Athlon X4
Model number ? 840
CPU part number
AD840XYBI44JA is an OEM/tray microprocessor
Frequency ?
3.1 GHz / 3100 MHz
Maximum turbo frequency
3.8 GHz / 3800 MHz
Package 906-pin lidded micro-PGA package
Socket Socket FM2+
Size 1.57" x 1.57" / 4cm x 4cm
Introduction date August 2014
Architecture / Microarchitecture
Microarchitecture Steamroller
Processor core ? Kaveri
Core stepping ? KV-A1
CPUID 630F01
Manufacturing process 0.028 micron SHP
2.41 billion transistors
Die 245mm2
Data width 64 bit
The number of CPU cores 4
The number of threads 4
Floating Point Unit Integrated
Level 1 cache size ? 2 x 96 KB 3-way set associative shared instruction caches
4 x 16 KB 4-way set associative data caches
Level 2 cache size ? 2 x 2 MB 16-way set associative shared caches
Level 3 cache size None
Multiprocessing Uniprocessor
Extensions & Technologies
MMX instructions
Extensions to MMX
SSE / Streaming SIMD Extensions
SSE2 / Streaming SIMD Extensions 2
SSE3 / Streaming SIMD Extensions 3
SSSE3 / Supplemental Streaming SIMD Extensions 3
SSE4 / SSE4.1 + SSE4.2 / Streaming SIMD Extensions 4 ?
SSE4a ?
AES / Advanced Encryption Standard instructions
AVX / Advanced Vector Extensions
BMI1 / Bit Manipulation instructions 1
F16C / 16-bit Floating-Point conversion instructions
FMA3 / 3-operand Fused Multiply-Add instructions
FMA4 / 4-operand Fused Multiply-Add instructions
TBM / Trailing Bit Manipulation instructions
XOP / eXtended Operations instructions
AMD64 / AMD 64-bit technology ?
AMD-V / AMD Virtualization technology
Turbo Core 3.0 technology
Security Features EVP / Enhanced Virus Protection ?
Low power features PowerNow!
Integrated peripherals / components
Integrated graphics None
Memory controller The number of controllers: 1
Memory channels (per controller): 2
Memory channels (total): 2
Supported memory: DDR3
Other peripherals
PCI Express 3.0 interface
Unified Video Decoder 4.0 ?
Video Coding Engine 2.0 ?
Electrical / Thermal parameters
Thermal Design Power ? 65 Watt