AMD Ryzen 9 3900 vs AMD Phenom II X3 B75

Comparative analysis of AMD Ryzen 9 3900 and AMD Phenom II X3 B75 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Advanced Technologies, Virtualization. Benchmark processor performance analysis: 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), PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core.

AMD Ryzen 9 3900

AMD Phenom II X3 B75

Differences

Reasons to consider the AMD Ryzen 9 3900

CPU is newer: launch date 9 year(s) 11 month(s) later
Processor is unlocked, an unlocked multiplier allows for easier overclocking
9 more cores, run more applications at once: 12 vs 3
21 more threads: 24 vs 3
Around 143233% higher clock speed: 4300 MHz vs 3 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 7 nm vs 45 nm
2x more L1 cache, more data can be stored in the L1 cache for quick access later
4x more L2 cache, more data can be stored in the L2 cache for quick access later
10.7x more L3 cache, more data can be stored in the L3 cache for quick access later
Around 46% lower typical power consumption: 65 Watt vs 95 Watt

Launch date	24 Sep 2019 vs October 2009
Unlocked	Unlocked vs Locked
Number of cores	12 vs 3
Number of threads	24 vs 3
Maximum frequency	4300 MHz vs 3 GHz
Manufacturing process technology	7 nm vs 45 nm
L1 cache	768 KB vs 128 KB (per core)
L2 cache	6 MB vs 512 KB (per core)
L3 cache	64 MB vs 6144 KB (shared)
Thermal Design Power (TDP)	65 Watt vs 95 Watt

Compare benchmarks

CPU 1: AMD Ryzen 9 3900
CPU 2: AMD Phenom II X3 B75

Name	AMD Ryzen 9 3900	AMD Phenom II X3 B75
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	30.97
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	70.972
CompuBench 1.5 Desktop - T-Rex (Frames/s)	1.748
CompuBench 1.5 Desktop - Video Composition (Frames/s)	4.924
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	19.043
PassMark - Single thread mark		1256
PassMark - CPU mark		1781
Geekbench 4 - Single Core		1905
Geekbench 4 - Multi-Core		4439

Compare specifications (specs)

	AMD Ryzen 9 3900	AMD Phenom II X3 B75
Essentials
Architecture codename	Zen 2	Heka
Launch date	24 Sep 2019	October 2009
OPN Tray	100-000000070	HDXB75WFK3DGM
Place in performance rating	1449	1501
Vertical segment	Desktop	Desktop
Family		AMD Phenom
Price now		$39.99
Series		AMD Business Class - AMD Phenom X3 Triple-Core
Value for money (0-100)		21.61
Performance
64 bit support
Base frequency	3100 MHz	3 GHz
L1 cache	768 KB	128 KB (per core)
L2 cache	6 MB	512 KB (per core)
L3 cache	64 MB	6144 KB (shared)
Manufacturing process technology	7 nm	45 nm
Maximum core temperature	95 °C
Maximum frequency	4300 MHz	3 GHz
Number of cores	12	3
Number of threads	24	3
Unlocked
Die size		258 mm
Transistor count		758 million
Memory
Max memory channels	2
Maximum memory bandwidth	47.68 GB/s
Maximum memory size	128 GB
Supported memory types	DDR4-3200	DDR3
Compatibility
Sockets supported	AM4	AM3
Thermal Design Power (TDP)	65 Watt	95 Watt
Max number of CPUs in a configuration		1
Peripherals
Max number of PCIe lanes	20
PCI Express revision	4.0
PCIe configurations	1x16+x4, 2x8+x4, 1x8+2x4+x4
Advanced Technologies
Enhanced Virus Protection (EVP)
Fused Multiply-Add 3 (FMA3)
Intel® Advanced Vector Extensions (AVX)
Intel® Advanced Vector Extensions 2 (AVX2)
Virtualization
AMD Virtualization (AMD-V™)