AMD Ryzen 7 5800X vs AMD FX-8120

Comparative analysis of AMD Ryzen 7 5800X and AMD FX-8120 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, 3DMark Fire Strike - Physics Score, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s).

AMD Ryzen 7 5800X

AMD FX-8120

Differences

Reasons to consider the AMD Ryzen 7 5800X

CPU is newer: launch date 9 year(s) 1 month(s) later
8 more threads: 16 vs 8
Around 18% higher clock speed: 4.7 GHz vs 4 GHz
Around 56% higher maximum core temperature: 95 °C vs 61°C
A newer manufacturing process allows for a more powerful, yet cooler running processor: 7 nm vs 32 nm
Around 33% more L1 cache; more data can be stored in the L1 cache for quick access later
4x more L3 cache, more data can be stored in the L3 cache for quick access later
Around 19% lower typical power consumption: 105 Watt vs 125 Watt
2.6x better performance in PassMark - Single thread mark: 3445 vs 1330
6x better performance in PassMark - CPU mark: 27770 vs 4631
3.2x better performance in 3DMark Fire Strike - Physics Score: 7595 vs 2399

Specifications (specs)
Launch date	5 Nov 2020 vs October 2011
Number of threads	16 vs 8
Maximum frequency	4.7 GHz vs 4 GHz
Maximum core temperature	95 °C vs 61°C
Manufacturing process technology	7 nm vs 32 nm
L1 cache	512 KB vs 384 KB
L3 cache	32 MB vs 8 MB
Thermal Design Power (TDP)	105 Watt vs 125 Watt
Benchmarks
PassMark - Single thread mark	3445 vs 1330
PassMark - CPU mark	27770 vs 4631
3DMark Fire Strike - Physics Score	7595 vs 2399

Reasons to consider the AMD FX-8120

2x more L2 cache, more data can be stored in the L2 cache for quick access later

L2 cache	8 MB vs 4 MB

Compare benchmarks

CPU 1: AMD Ryzen 7 5800X
CPU 2: AMD FX-8120

PassMark - Single thread mark

CPU 1

CPU 2

3445

1330

PassMark - CPU mark

CPU 1

CPU 2

27770

4631

3DMark Fire Strike - Physics Score

CPU 1

CPU 2

7595

2399

Name	AMD Ryzen 7 5800X	AMD FX-8120
PassMark - Single thread mark	3445	1330
PassMark - CPU mark	27770	4631
3DMark Fire Strike - Physics Score	7595	2399
Geekbench 4 - Single Core		480
Geekbench 4 - Multi-Core		2092
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		7.468
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		18
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.38
CompuBench 1.5 Desktop - Video Composition (Frames/s)		0.898
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		5.613

Compare specifications (specs)

	AMD Ryzen 7 5800X	AMD FX-8120
Essentials
Architecture codename	Zen 3	Zambezi
Launch date	5 Nov 2020	October 2011
Launch price (MSRP)	$449
OPN PIB	100-100000063WOF	FD8120FRGUBOX
OPN Tray	100-000000063	FD8120FRW8KGU
Place in performance rating	458	2675
Vertical segment	Desktop	Desktop
Family		AMD FX-Series Processors
Price now		$99.99
Series		AMD FX 8-Core Black Edition Processors
Value for money (0-100)		19.43
Performance
Base frequency	3.8 GHz	3.1 GHz
L1 cache	512 KB	384 KB
L2 cache	4 MB	8 MB
L3 cache	32 MB	8 MB
Manufacturing process technology	7 nm	32 nm
Maximum core temperature	95 °C	61°C
Maximum frequency	4.7 GHz	4 GHz
Number of cores	8	8
Number of threads	16	8
Unlocked
64 bit support
Die size		315 mm
P0 Vcore voltage		Min: 1.0125 V - Max: 1.4125 V
Transistor count		1200 million
Memory
ECC memory support
Max memory channels	2
Maximum memory bandwidth	47.68 GB/s
Maximum memory size	128 GB
Supported memory types	DDR4-3200
Compatibility
Sockets supported	AM4	AM3+
Thermal Design Power (TDP)	105 Watt	125 Watt
Max number of CPUs in a configuration		1
Peripherals
Max number of PCIe lanes	20
PCI Express revision	4.0	n / a
PCIe configurations	1x16+x4, 2x8+x4, 1x8+2x4+x4
Advanced Technologies
AMD SenseMI
AMD StoreMI technology
Fused Multiply-Add 3 (FMA3)
Intel® Advanced Vector Extensions (AVX)
Intel® Advanced Vector Extensions 2 (AVX2)
Intel® AES New Instructions
Fused Multiply-Add (FMA)
Virtualization
AMD Virtualization (AMD-V™)