Phenom II X4 955 BE vs Ryzen 7 1800X

Primary details

Comparing Ryzen 7 1800X and Phenom II X4 955 BE processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	685	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	12.81	no data
Market segment	Desktop processor	Desktop processor
Series	AMD Ryzen 7	no data
Architecture codename	Zen (2017−2020)	Deneb (2009−2011)
Release date	2 March 2017 (7 years ago)	April 2009 (15 years ago)
Launch price (MSRP)	$499	no data
Current price	$182 (0.4x MSRP)	$30

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Ryzen 7 1800X and Phenom II X4 955 BE 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	8 (Octa-Core)	4 (Quad-Core)
Threads	16	4
Base clock speed	3.6 GHz	no data
Boost clock speed	4 GHz	3.2 GHz
L1 cache	768 KB	128 KB (per core)
L2 cache	4096 KB	512 KB (per core)
L3 cache	16384 KB	6 MB (shared)
Chip lithography	14 nm	45 nm
Die size	192 mm2	258 mm2
Number of transistors	4,800 million	758 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	Yes	Yes

Compatibility

Information on Ryzen 7 1800X and Phenom II X4 955 BE 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)	1
Socket	AM4	AM3
Power consumption (TDP)	95 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 7 1800X and Phenom II X4 955 BE. You'll probably need this information if you require some particular technology.

Instruction set extensions	XFR, FMA3, SSE 4.2, AVX2, SMT	no data
AES-NI	+	no data
FMA	FMA3	no data
AVX	+	no data
XFR	+	no data
SenseMI	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 7 1800X and Phenom II X4 955 BE are enumerated here.

AMD-V

+

no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 7 1800X and Phenom II X4 955 BE. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR3
Maximum memory size	64 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	42.671 GB/s	no data
ECC memory support	+	no data

Peripherals

Specifications and connection of peripherals supported by Ryzen 7 1800X and Phenom II X4 955 BE.

PCIe version	n/a	no data
PCI Express lanes	20	no data

Pros & cons summary

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Physical cores	8	4
Threads	16	4
Chip lithography	14 nm	45 nm
Power consumption (TDP)	95 Watt	125 Watt

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Should you still have questions on choice between Ryzen 7 1800X and Phenom II X4 955 BE, ask them in Comments section, and we shall answer.

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