Intel Core i9 12900KF vs Intel Xeon 656
CPU · Specs Compare
General Parameters
Release Date
Oct 2021
Feb 2026
Manufacturer
Intel
Intel
Type
Desktop
Server
Instruction Set
x86-64
—
Core Architecture
Alder Lake
Granite Rapids
Processor Number
i9-12900KF
—
Integrated Graphics
No
N/A
Generation
—
Xeon 600 (Granite Rapids-WS)
Series
—
Intel Xeon 6 processors
Package
Manufacturing Process
10 nm
5 nm
Socket
LGA-1700
Intel Socket 4710
Power Consumption
125 W
210 W
Max Turbo Power Consumption
241 W
—
Peak Operating Temperature
100°C
98°C
Foundry
—
Intel
Die Size
—
2x598 mm²
I/O Process Size
—
10 nm
I/O Die Size
—
2x 241
Package
—
FC-LGA18N
CPU Performance
Performance Cores
8
20
Performance Core Threads
16
40
Performance Core Base Frequency
3.2 GHz
2.9 GHz
Performance Core Turbo Frequency
5.1 GHz
4.8 GHz
Efficiency Cores
8
—
Efficiency Core Threads
8
—
Efficiency Core Base Frequency
2.4 GHz
—
Efficiency Core Turbo Frequency
3.9 GHz
—
Total Core Count
16
20
Total Thread Count
24
40
Bus Frequency
100 MHz
100 MHz
Multiplier
32x
29.0
L1 Cache
64 K per core
112 KB per core
L2 Cache
14 MB shared
2 MB per core
L3 Cache
30 MB shared
72 MB shared
Unlocked Multiplier
Yes
Yes
SMP
—
1
Memory Parameters
Memory Types
DDR5-4800, DDR4-3200
DDR5-6400
Max Memory Size
128 GB
4 TB
Max Memory Channels
2
8
Max Memory Bandwidth
76.8 GB/s
409.6 GB/s
ECC Memory Support
Yes
Yes
Miscellaneous
PCIe Version
5.0
5
PCIe Lanes
20
128
Benchmark
Cinebench R23
2,028
—
Cinebench R23
27,422
—
Geekbench 6
2,686
—
Geekbench 5
1,970
—
Geekbench 6
16,130
—
Geekbench 5
17,469
—
Blender
425
—
Passmark CPU
4,167
—
Passmark CPU
41,190
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.