Phenom II X2 N640 vs i5-2557M

Place in the ranking	2422	2545
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i5	2x AMD Phenom II
Power efficiency	6.01	2.46
Architecture codename	Sandy Bridge (2011−2013)	Champlain (2010−2011)
Release date	1 June 2011 (13 years ago)	1 October 2010 (14 years ago)
Launch price (MSRP)	$250	no data

Detailed specifications

Core i5-2557M 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	1.7 GHz	no data
Boost clock speed	2.7 GHz	2.9 GHz
Bus type	DMI 2.0	no data
Bus rate	4 × 5 GT/s	3600 MHz
Multiplier	17	no data
L1 cache	64K (per core)	256 KB
L2 cache	256K (per core)	2 MB
L3 cache	3 MB (shared)	no data
Chip lithography	32 nm	45 nm
Die size	149 mm²	no data
Maximum core temperature	100 °C	no data
Number of transistors	624 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i5-2557M 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 (Uniprocessor)	no data
Socket	FCBGA1023	S1
Power consumption (TDP)	17 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-2557M and Phenom II X2 N640. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	HyperTransport 3.0, SSE4A, AMD64, Enhanced Virus Protection, Vurtualization
AES-NI	+	-
FMA	+	-
AVX	+	-
VirusProtect	-	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
My WiFi	+	no data
Turbo Boost Technology	+	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
Demand Based Switching	-	no data
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Core i5-2557M and Phenom II X2 N640 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data
Identity Protection	+	-
Anti-Theft	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-2557M and Phenom II X2 N640 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-2557M and Phenom II X2 N640. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	8.01 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	21.335 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics 3000	no data
Quick Sync Video	+	-
Clear Video HD	+	no data
Graphics max frequency	1.2 GHz	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i5-2557M and Phenom II X2 N640 integrated GPUs.

Number of displays supported	2	no data
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
SDVO	+	no data
CRT	+	no data

Peripherals

Specifications and connection of peripherals supported by Core i5-2557M and Phenom II X2 N640.

PCIe version	2.0	no data
PCI Express lanes	16	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.

i5-2557M 1.08
+18.7%

Phenom II X2 N640 0.91

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.

i5-2557M 405
+18.4%

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.

i5-2557M 811
+30.2%

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.

i5-2557M 2
+33.7%

Phenom II X2 N640 2

Gaming performance

Pros & cons summary

Performance score	1.08	0.91
Recency	1 June 2011	1 October 2010
Threads	4	2
Chip lithography	32 nm	45 nm
Power consumption (TDP)	17 Watt	35 Watt

i5-2557M has a 18.7% higher aggregate performance score, an age advantage of 8 months, 100% more threads, a 40.6% more advanced lithography process, and 105.9% lower power consumption.

The Core i5-2557M is our recommended choice as it beats the Phenom II X2 N640 in performance tests.

Should you still have questions on choice between Core i5-2557M and Phenom II X2 N640, ask them in Comments section, and we shall answer.