Core i7-2655LE vs Athlon II X4 638

General info

Comparing Athlon II X4 638 and Core i7-2655LE processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2052	2149
Place by popularity	not in top-100	not in top-100
Value for money	2.05	0.03
Market segment	Desktop processor	Laptop
Series	no data	Intel Core i7
Architecture codename	Llano (2011−2012)	Sandy Bridge (2011−2013)
Release date	6 February 2012 (12 years old)	no data
Launch price (MSRP)	no data	$346
Current price	$27	$4071 (11.8x MSRP)

Value for money

Performance per price, higher is better.

Athlon II X4 638 has 6733% better value for money than i7-2655LE.

Technical specs

Athlon II X4 638 and Core i7-2655LE 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	4 (Quad-Core)	2 (Dual-core)
Threads	4	4
Base clock speed	2.7 GHz	no data
Boost clock speed	2.7 GHz	2.2 GHz
Bus support	no data	4 × 5 GT/s
L1 cache	128 KB (per core)	128 KB
L2 cache	1 MB (per core)	512 KB
L3 cache	0 KB	4 MB
Chip lithography	32 nm	32 nm
Die size	228 mm2	no data
Number of transistors	1,178 million	624 Million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Athlon II X4 638 and Core i7-2655LE 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	1 (Uniprocessor)
Socket	FM1	no data
Power consumption (TDP)	65 Watt	25 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Athlon II X4 638 and Core i7-2655LE. You'll probably need this information if you require some particular technology.

AES-NI	no data	+
FMA	no data	+
AVX	no data	+
vPro	no data	+
Enhanced SpeedStep (EIST)	no data	+

Security technologies

Athlon II X4 638 and Core i7-2655LE technologies aimed at improving security, for example, by protecting against hacks.

TXT

no data

+

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon II X4 638 and Core i7-2655LE are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II X4 638 and Core i7-2655LE. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	no data
Maximum memory size	no data	16 GB
Maximum memory bandwidth	no data	21.335 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

Intel HD Graphics 3000

Synthetic benchmark performance

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

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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.

Athlon II X4 638 outperforms Core i7-2655LE by 12% based on our aggregated benchmark results.

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Advantages and disadvantages

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Performance score	1.47	1.31
Physical cores	4	2
Power consumption (TDP)	65 Watt	25 Watt

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Should you still have questions on choice between Athlon II X4 638 and Core i7-2655LE, ask them in Comments section, and we shall answer.

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