Intel Core i9 11900KF vs AMD Ryzen 5 Pro 9645

Budget Pick Limited Intel Core i9 11900KF Buy Now ↗
VS
Recommended Available
AMD Ryzen 5 Pro 9645 Buy Now ↗
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Review

Intel Core i9 11900KF
AMD Ryzen 5 Pro 9645
Single-Core Performance
68
90
Multi-Core Performance
38
47
Power Efficiency
41
79
QucikComparison Final Score
54
71
Integrated Graphics
0
28
❖

Key differences

Key distinctions and advantages between Intel Core i9 11900KF and AMD Ryzen 5 Pro 9645

Reasons to consider the Intel Core i9 11900KF

  • + 8 cores / 16 threads with SMT
  • + DDR4 memory support
  • + LGA-1200 socket
  • + Rocket Lake architecture

Reasons to consider the AMD Ryzen 5 Pro 9645

  • + 6 cores / 12 threads with SMT
  • + DDR5 memory support
  • + AM5 socket
  • + Zen 5 (Granite Ridge) architecture

Pros & Cons

Intel Core i9 11900KF
  • Solid single-core performance
  • High power draw (125W TDP)
  • Limited multi-threaded performance
  • No integrated graphics — discrete GPU required
  • Older generation architecture

"A mid-range Intel Core i9 11900KF processor with strong single-core performance (68/100). Suited for everyday productivity."

AMD Ryzen 5 Pro 9645
  • Excellent single-core performance
  • Great power efficiency
  • Built-in integrated graphics
  • Modern DDR5 memory support
  • Limited multi-threaded performance

"A high-end AMD Ryzen 5 Pro 9645 processor with strong single-core performance (90/100), excellent power efficiency. Suited for demanding workloads."

Value for Money Beta

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PKRs
PKRs
Intel Core i9 11900KF
VS
AMD Ryzen 5 Pro 9645
—
VALUE INDEX
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Benchmarks

Blender
Blender CPU
Intel Core i9 11900KF
213.97
AMD Ryzen 5 Pro 9645
—
Cinebench
Cinebench 2024 (Single)
Intel Core i9 11900KF
97
AMD Ryzen 5 Pro 9645 +36%
132
Intel Core i9 11900KF AMD Ryzen 5 Pro 9645
Cinebench 2024 (Multi) 867 969

Specifications

GeekBench v6
Specification Intel Core i9 11900KF ↗ AMD Ryzen 5 Pro 9645 ↗
Geekbench 6 (Single-Core) 2535 3288
Geekbench 6 (Multi-Core) 10369 13522
File compression 741.6 MB/sec 1170 MB/sec
Clang compilation 92.6 Klines/sec 105.3 Klines/sec
HTML 5 Browser 188.6 pages/sec 232.7 pages/sec
PDF Renderer 316.8 Mpixels/sec 361 Mpixels/sec
Text processing 242.6 pages/sec 358.7 pages/sec
Background blur 51.7 images/sec 73.7 images/sec
Photo processing 73.4 images/sec 92.3 images/sec
Ray tracing 21 Mpixels/sec 22.3 Mpixels/sec
PassMark
Specification Intel Core i9 11900KF ↗ AMD Ryzen 5 Pro 9645 ↗
Passmark CPU (Single-Core) 3518 4634
Passmark CPU (Multi-Core) 24544 31432
Integer math 88.6 GOps/sec 93 GOps/sec
Floating point math 52.5 GOps/sec 62.7 GOps/sec
Find prime numbers 66M Primes/sec 235M Primes/sec
Random string sorting 37.3M Strings/sec 38.3M Strings/sec
Data encryption 15.5 GBytes/sec 17.6 GBytes/sec
Data compression 323.2 MBytes/sec 364.8 MBytes/sec
Physics 1026 Frames/sec 1937 Frames/sec
Extended instructions 22.6B Matrices/sec 29.8B Matrices/sec
Performance Per Watt
Specification Intel Core i9 11900KF ↗ AMD Ryzen 5 Pro 9645 ↗
Cinebench 2024 / Watt 6.9 PPW 14.9 PPW
Geekbench 6 Multi / Watt 83 PPW 208 PPW
Passmark CPU Mark / Watt 196.4 PPW 483.6 PPW
Blender / Watt 1.71 PPW
General
Specification Intel Core i9 11900KF ↗ AMD Ryzen 5 Pro 9645 ↗
Vendor Intel Amd
Released 16-Mar-21 5-Jan-26
Type Desktop Desktop
Instruction Set x86-64 x86-64
Codename Rocket Lake Zen 5 (Granite Ridge)
Model number i9-11900KF 9645
Integrated GPU No Radeon Graphics
Qualcomm Equivalent
CPU
Specification Intel Core i9 11900KF ↗ AMD Ryzen 5 Pro 9645 ↗
P-Cores 8 6
P-Threads 16 12
Base Frequency (P) 3.5 GHz 3.9 GHz
E-Cores
E-Threads
Base Frequency (E)
Total Cores 8 6
Total Threads 16 12
Multiplier 35x 39x
L1 Cache 64K (per core) 80K (per core)
L2 Cache 512K (per core) 1MB (per core)
Unlocked Multiplier Yes Yes
Package
Specification Intel Core i9 11900KF ↗ AMD Ryzen 5 Pro 9645 ↗
Transistors
Fabrication Process 14 nm 4 nm
TDP (PL1) 125 W 65 W
Socket LGA-1200 AM5
Peak Temperature 100°C 95°C
iGPU
Specification Intel Core i9 11900KF ↗ AMD Ryzen 5 Pro 9645 ↗
Integrated Graphics Radeon Graphics
GPU Boost Clock 2200 MHz
Shading Units 128
TMUs 8
ROPs 4
Execution Units 2
iGPU FLOPS 0.6 TFLOPS
Memory Support
Specification Intel Core i9 11900KF ↗ AMD Ryzen 5 Pro 9645 ↗
Memory Types -3200 -5600
Max. Memory Size 128 GB 192 GB
Memory Channels 2 2
Max. Memory Bandwidth 50 GB/s
ECC Support No Yes

Comparison with Competitors

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