Phenom II X2 N640 vs M-5Y51

Place in the ranking	2292	2529
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core M	2x AMD Phenom II
Power efficiency	23.85	2.43
Architecture codename	Broadwell-Y (2014)	Champlain (2010−2011)
Release date	27 October 2014 (10 years ago)	1 October 2010 (14 years ago)

Detailed specifications

Core M-5Y51 and Phenom II X2 N640 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	2 (Dual-core)	2 (Dual-core)
Threads	4	2
Base clock speed	1.1 GHz	no data
Boost clock speed	2.6 GHz	2.9 GHz
Bus rate	no data	3600 MHz
L1 cache	64K (per core)	256 KB
L2 cache	256K (per core)	2 MB
L3 cache	4 MB (shared)	no data
Chip lithography	14 nm	45 nm
Die size	50 mm²	no data
Maximum core temperature	95 °C	no data
Number of transistors	1300 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core M-5Y51 and Phenom II X2 N640 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1	no data
Socket	FCBGA1234	S1
Power consumption (TDP)	4.5 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core M-5Y51 and Phenom II X2 N640. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	HyperTransport 3.0, SSE4A, AMD64, Enhanced Virus Protection, Vurtualization
AES-NI	+	-
AVX	+	-
VirusProtect	-	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
Smart Response	+	no data
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Core M-5Y51 and Phenom II X2 N640 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data
Secure Key	+	no data
Identity Protection	+	-
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core M-5Y51 and Phenom II X2 N640 are enumerated here.

AMD-V	+	-
VT-d	+	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core M-5Y51 and Phenom II X2 N640. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	16 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	25.6 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics 5300	no data
Max video memory	16 GB	no data
Quick Sync Video	+	-
Clear Video HD	+	no data
Graphics max frequency	900 MHz	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core M-5Y51 and Phenom II X2 N640 integrated GPUs.

Number of displays supported	3	no data
eDP	+	no data
DisplayPort	+	-
HDMI	+	-

Graphics image quality

Maximum display resolutions supported by Core M-5Y51 and Phenom II X2 N640 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	2560x1600@60Hz	no data
Max resolution over DisplayPort	2560x1600@60Hz	no data

Graphics API support

APIs supported by Core M-5Y51 and Phenom II X2 N640 integrated GPUs, sometimes API versions are included.

DirectX	11.2/12	no data
OpenGL	4.3	no data

Peripherals

Specifications and connection of peripherals supported by Core M-5Y51 and Phenom II X2 N640.

PCIe version	2.0	no data
PCI Express lanes	12	no data

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

M-5Y51 1.26
+40%

Phenom II X2 N640 0.90

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

M-5Y51 655
+91.5%

Phenom II X2 N640 342

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

M-5Y51 1122
+80.1%

Phenom II X2 N640 623

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

M-5Y51 2

Phenom II X2 N640 2
+0.6%

Gaming performance

Pros & cons summary

Performance score	1.26	0.90
Recency	27 October 2014	1 October 2010
Threads	4	2
Chip lithography	14 nm	45 nm
Power consumption (TDP)	4 Watt	35 Watt

M-5Y51 has a 40% higher aggregate performance score, an age advantage of 4 years, 100% more threads, a 221.4% more advanced lithography process, and 775% lower power consumption.

The Core M-5Y51 is our recommended choice as it beats the Phenom II X2 N640 in performance tests.

Should you still have questions on choice between Core M-5Y51 and Phenom II X2 N640, ask them in Comments section, and we shall answer.