Intel Core i5 6400 vs Intel Core i9 12900T
CPU · Specs Compare
General Parameters
Release Date
Sep 2015
Jan 2022
Manufacturer
Intel
Intel
Type
Desktop
Desktop
Instruction Set
x86-64
—
Core Architecture
Skylake
Alder Lake-S
Processor Number
i5-6400
—
Integrated Graphics
HD Graphics 530
UHD Graphics 770
Generation
—
Core i9 (Alder Lake-S)
Package
Manufacturing Process
14 nm
10 nm
Socket
LGA-1151
Intel Socket 1700
Power Consumption
65 W
35 W
Peak Operating Temperature
—
72 °C
Foundry
—
Intel
Die Size
—
215 mm²
Package
—
FC-LGA16A
CPU Performance
Performance Cores
4
8
Performance Core Threads
4
16
Performance Core Base Frequency
2.7 GHz
1.4 GHz
Performance Core Turbo Frequency
3.3 GHz
4.9 GHz
Total Core Count
4
16
Total Thread Count
4
24
Bus Frequency
100 MHz
100 MHz
Multiplier
27x
14.0
L1 Cache
64 K per core
80 KB per core
L2 Cache
256 K per core
1.25 MB per core
L3 Cache
6 MB shared
30 MB shared
Unlocked Multiplier
No
Yes
Efficiency Cores
—
8
Efficiency Core Threads
—
8
Efficiency Core Base Frequency
—
1000 MHz
Efficiency Core Turbo Frequency
—
3.6 GHz
SMP
—
1
Memory Parameters
Memory Types
DDR4-2133, DDR3L-1600
DDR4-3200, DDR5-4800
Max Memory Size
64 GB
—
Max Memory Channels
2
2
Max Memory Bandwidth
34.1 GB/s
76.8 GB/s
ECC Memory Support
No
No
Graphics Card Parameters
Integrated Graphics
true
true
GPU Max Dynamic Frequency
950 MHz
1550 MHz
GPU Base Frequency
—
300 MHz
Execution Units
—
32
Miscellaneous
PCIe Version
3.0
5
PCIe Lanes
16
20
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2
—
Benchmark
Cinebench R23
898
1,865
Cinebench R23
3,214
22,804
Geekbench 6
1,143
2,362
Geekbench 5
853
—
Geekbench 6
3,312
12,384
Geekbench 5
2,805
—
Blender
49
153
Passmark CPU
1,961
—
Passmark CPU
5,151
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.