FX-4170 vs Phenom II X3 B77

Place in the ranking	2365	1958
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Power efficiency	1.16	1.45
Architecture codename	Heka (2009−2010)	Zambezi (2011−2012)
Release date	11 May 2010 (14 years ago)	27 February 2012 (12 years ago)

Detailed specifications

Phenom II X3 B77 and FX-4170 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	3 (Tri-Core)	4 (Quad-Core)
Threads	3	4
Base clock speed	3.2 GHz	4.2 GHz
Boost clock speed	3.2 GHz	4.3 GHz
L1 cache	128 KB (per core)	192 KB
L2 cache	512 KB (per core)	4096 KB
L3 cache	6 MB (shared)	8192 KB
Chip lithography	45 nm	32 nm
Die size	258 mm²	315 mm²
Maximum core temperature	no data	61 °C
Number of transistors	758 million	1,200 million
64 bit support	+	+
Windows 11 compatibility	-	-
P0 Vcore voltage	no data	Min: 1.1875 V - Max: 1.4125 V

Compatibility

Information on Phenom II X3 B77 and FX-4170 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	AM3	AM3+
Power consumption (TDP)	95 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Phenom II X3 B77 and FX-4170. 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 Phenom II X3 B77 and FX-4170 are enumerated here.

AMD-V

Memory specs

Types, maximum amount and channel quantity of RAM supported by Phenom II X3 B77 and FX-4170. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3

Peripherals

Specifications and connection of peripherals supported by Phenom II X3 B77 and FX-4170.

PCIe version

2.0

n/a

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.

Phenom II X3 B77 1.17

FX-4170 1.92
+64.1%

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.

Phenom II X3 B77 1844

FX-4170 3034
+64.5%

Gaming performance

Pros & cons summary

Performance score	1.17	1.92
Recency	11 May 2010	27 February 2012
Physical cores	3	4
Threads	3	4
Chip lithography	45 nm	32 nm
Power consumption (TDP)	95 Watt	125 Watt

Phenom II X3 B77 has 31.6% lower power consumption.

FX-4170, on the other hand, has a 64.1% higher aggregate performance score, an age advantage of 1 year, 33.3% more physical cores and 33.3% more threads, and a 40.6% more advanced lithography process.

The FX-4170 is our recommended choice as it beats the Phenom II X3 B77 in performance tests.

Should you still have questions on choice between Phenom II X3 B77 and FX-4170, ask them in Comments section, and we shall answer.