A4-3400 vs Athlon II X4 638

Primary details

Comparing Athlon II X4 638 and A4-3400 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2066	2586
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.05	5.85
Market segment	Desktop processor	Desktop processor
Architecture codename	Llano (2011−2012)	Llano (2011−2012)
Release date	6 February 2012 (12 years ago)	7 September 2011 (12 years ago)
Current price	$27	$27

Cost-effectiveness evaluation

Performance per price, higher is better.

A4-3400 has 185% better value for money than Athlon II X4 638.

Detailed specifications

Athlon II X4 638 and A4-3400 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	2
Base clock speed	2.7 GHz	2.7 GHz
Boost clock speed	2.7 GHz	2.7 GHz
L1 cache	128 KB (per core)	128 KB (per core)
L2 cache	1 MB (per core)	512 KB (per core)
L3 cache	0 KB	0 KB
Chip lithography	32 nm	32 nm
Die size	228 mm2	228 mm2
Number of transistors	1,178 million	1,178 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Athlon II X4 638 and A4-3400 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
Socket	FM1	FM1
Power consumption (TDP)	65 Watt	65 Watt

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon II X4 638 and A4-3400 are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II X4 638 and A4-3400. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3

DDR3

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

Radeon HD 6410D

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.

Athlon II X4 638 outperforms A4-3400 by 107% based on our aggregated benchmark results.

---

Pros & cons summary

---

Performance score	1.45	0.70
Recency	6 February 2012	7 September 2011
Physical cores	4	2
Threads	4	2

---

Should you still have questions on choice between Athlon II X4 638 and A4-3400, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---