Intel Core i7 7820X vs Intel Core i9 12900K
CPU · Specs Compare
General Parameters
Release Date
May 2017
Oct 2021
Manufacturer
Intel
Intel
Type
Desktop
Desktop
Instruction Set
x86-64
x86-64
Core Architecture
Skylake
Alder Lake
Processor Number
i7-7820X
i9-12900K
Integrated Graphics
N/A
UHD Graphics 770
Package
Manufacturing Process
14 nm
10 nm
Socket
LGA-2066
LGA-1700
Power Consumption
140 W
125 W
Peak Operating Temperature
99 °C
100°C
CPU Performance
Performance Cores
8
8
Performance Core Threads
16
16
Performance Core Base Frequency
3.6 GHz
3,2 GHz
Performance Core Turbo Frequency
4.3 GHz
5.1 GHz
Total Core Count
8
16
Total Thread Count
16
24
Bus Frequency
100 MHz
100 MHz
Multiplier
36x
32x
L1 Cache
64 K per core
64 K per core
L2 Cache
1 MB per core
14 MB shared
L3 Cache
11 MB shared
30 MB shared
Unlocked Multiplier
Yes
Yes
Efficiency Cores
—
8
Efficiency Core Threads
—
8
Efficiency Core Base Frequency
—
2.4 GHz
Efficiency Core Turbo Frequency
—
3.9 GHz
Memory Parameters
Memory Types
DDR4-2666
DDR5-4800, DDR4-3200
Max Memory Size
128 GB
128 GB
Max Memory Channels
4
2
Max Memory Bandwidth
79.47 GB/s
76.8 GB/s
ECC Memory Support
No
Yes
Miscellaneous
PCIe Version
3.0
5.0
PCIe Lanes
28
20
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2, AVX-512
—
Graphics Card Parameters
Integrated Graphics
—
true
GPU Base Frequency
—
300 MHz
GPU Max Dynamic Frequency
—
1550 MHz
Shader Units
—
256
Texture Units
—
16
Raster Operation Units
—
8
Execution Units
—
32
Power Consumption
—
15 W
Benchmark
Cinebench R23
1,338
2,028
Cinebench R23
13,358
27,422
Geekbench 6
1,252
2,631
Geekbench 5
1,120
—
Geekbench 6
7,510
17,004
Geekbench 5
8,504
—
Passmark CPU
2,536
—
Passmark CPU
17,189
—
Blender
—
422
▲ Specs Compare
Data sourced from official specifications and benchmark tests.