A4-4000 vs FX-770K

Place in the ranking	1953	2686
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Power efficiency	2.81	1.05
Architecture codename	Kaveri (2014−2015)	Richland (2013−2014)
Release date	December 2014 (9 years ago)	1 June 2013 (11 years ago)

Detailed specifications

FX-770K and A4-4000 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	3.5 GHz	3 GHz
Boost clock speed	3.9 GHz	3.2 GHz
L1 cache	256K	128 KB (per core)
L2 cache	4 MB	1 MB (per core)
L3 cache	no data	0 KB
Chip lithography	28 nm	32 nm
Die size	245 mm²	246 mm²
Maximum case temperature (TCase)	72 °C	70 °C
Number of transistors	2,411 million	1,178 million
64 bit support	+	+
Windows 11 compatibility	no data	-
Unlocked multiplier	+	-

Compatibility

Information on FX-770K and A4-4000 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	FM2+	FM2
Power consumption (TDP)	65 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by FX-770K and A4-4000. You'll probably need this information if you require some particular technology.

AES-NI	+	-
FMA	+	-
AVX	+	-

Virtualization technologies

Virtual machine speed-up technologies supported by FX-770K and A4-4000 are enumerated here.

AMD-V

Memory specs

Types, maximum amount and channel quantity of RAM supported by FX-770K and A4-4000. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3-2133

DDR3

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

AMD Radeon HD 7480D

Peripherals

Specifications and connection of peripherals supported by FX-770K and A4-4000.

PCIe version	3.0	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.

FX-770K 1.93
+168%

A4-4000 0.72

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

FX-770K 3060
+167%

A4-4000 1146

Gaming performance

Pros & cons summary

Performance score	1.93	0.72
Physical cores	4	2
Threads	4	2
Chip lithography	28 nm	32 nm

FX-770K has a 168.1% higher aggregate performance score, 100% more physical cores and 100% more threads, and a 14.3% more advanced lithography process.

The FX-770K is our recommended choice as it beats the A4-4000 in performance tests.

Should you still have questions on choice between FX-770K and A4-4000, ask them in Comments section, and we shall answer.