Athlon X4 845 vs Ryzen 7 5800X

Primary details

Comparing Ryzen 7 5800X and Athlon X4 845 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	354	1768
Place by popularity	60	not in top-100
Cost-effectiveness evaluation	23.48	no data
Market segment	Desktop processor	Desktop processor
Series	AMD Ryzen 7	no data
Power efficiency	15.81	3.48
Architecture codename	Vermeer (Zen 3) (2020−2022)	Carrizo (2015−2018)
Release date	8 October 2020 (4 years ago)	2 February 2016 (8 years ago)
Launch price (MSRP)	$449	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Ryzen 7 5800X and Athlon X4 845 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	3.8 GHz	3.5 GHz
Boost clock speed	4.7 GHz	3.8 GHz
Multiplier	38	no data
L1 cache	512 KB	320K
L2 cache	4 MB	2 MB
L3 cache	32 MB	no data
Chip lithography	7 nm, 12 nm	28 nm
Die size	2 x 80.7 sq. mm; I/O = 125 mm2	250 mm2
Maximum core temperature	90 °C	no data
Maximum case temperature (TCase)	95 °C	74 °C
Number of transistors	no data	3,100 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	+

Compatibility

Information on Ryzen 7 5800X and Athlon X4 845 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	AM4	FM2+
Power consumption (TDP)	105 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 7 5800X and Athlon X4 845. You'll probably need this information if you require some particular technology.

Instruction set extensions	MMX (+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, AES, AVX, AVX2, FMA3, SHA	no data
AES-NI	+	+
FMA	-	+
AVX	+	+
Precision Boost 2	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 7 5800X and Athlon X4 845 are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 7 5800X and Athlon X4 845. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR3-2133
Maximum memory size	128 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	51.196 GB/s	no data

Peripherals

Specifications and connection of peripherals supported by Ryzen 7 5800X and Athlon X4 845.

PCIe version	4.0	3.0
PCI Express lanes	no data	8

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.

---

Pros & cons summary

---

Performance score	18.20	2.48
Recency	8 October 2020	2 February 2016
Physical cores	8	4
Threads	16	4
Chip lithography	7 nm	28 nm
Power consumption (TDP)	105 Watt	65 Watt

---

Should you still have questions on choice between Ryzen 7 5800X and Athlon X4 845, 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.

---