Comparison of AMD Ryzen 9 3900X and Intel Core i9-11900KF

Attribute	AMD Ryzen 9 3900X ×	Intel Core i9-11900KF ×
General Information
Brand	AMD	Intel
Series	AMD Ryzen	Intel Core i9
Model	AMD Ryzen 9 3900X	Intel Core i9-11900KF
CPU Cores and Base Frequency
CPU Cores	12	8
Frequency (GHz)	3.8	3.5
CPU Threads	24	16
Core architecture	normal	normal
Hyperthreading	+	+
Overclocking	+	+
Turbo (1 Core) (GHz)	4.6	5.3
Turbo (8 Cores) (GHz)	-	4.8
Turbo (12 Cores) (GHz)	4.2	-
Encryption
AES-NI	+	+
Hardware codec support
JPEG	No	No
h264	No	No
h265 / HEVC (8 bit)	No	No
h265 / HEVC (10 bit)	No	No
VP8	No	No
AV1	No	No
VC-1	No	No
VP9	No	No
AVC	No	No
Memory And PCIe
Memory type	-	DDR4-3200
Max. Memory (GB)	128	128
PCIe lanes	20	20
PCIe version	4.0	4.0
ECC	+	-
Memory channels	2	2
Technical details
Release date (year)	2019	2021
Technology (Nm)	7	14
Socket	AM4	LGA 1200
Virtualization	amd-v sev	vt-d vt-x vt-x ept
L3-Cache (MB)	64	16
L2-Cache (MB)	6	4
Architecture	Zen 2	Rocket Lake
Instruction set (ISA)	x86-64 (64 bit)	x86-64 (64 bit)
Thermal Management
Temp junction max (°C)	95	100
TDP (PL2) (W)	142	251
TDP down (W)	-	95
TDP (PL1) (W)	105	125
Benchmarks
Estimated results for PassMark CPU Mark	31,947	28,465
Geekbench 5, 64bit (Single-Core)	1,285	1,910
Geekbench 5, 64bit (Multi-Core)	12,128	11,350
Cinebench R15 (Single-Core)	214	262
Cinebench R15 (Multi-Core)	3,168	2,575
Cinebench R20 (Single-Core)	521	645
Cinebench R20 (Multi-Core)	7,178	6,214
Blender 2.81 (bmw27)	115.9	-
Cinebench R23 (Single-Core)	1,342	1,671
Cinebench R23 (Multi-Core)	18,424	16,211