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Core i5-2400 vs FX-8120

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Performance score

Core i5-2400 2011 · 4/4 cores/threads, 95 W
11.64 +8%
FX-8120 2011 · 8/8 cores/threads, 125 W
10.77

Core i5-2400 is 8% faster than FX-8120 by our estimate.

Different sockets (LGA1155 and AM3+) — switching between them needs a different motherboard.

The score is our own estimate from the specs (cores, threads, clocks, architecture generation), not a benchmark run. 100 = the fastest CPU in our database.

Real tests

What the test measures

Blender is a popular free 3D graphics program. The test makes the device render three ready-made 3D scenes (light, shadows, reflections) and counts how many render passes it finishes per minute. The higher the number, the faster the device handles heavy work: 3D, video editing, photo processing. On a CPU the test loads all cores at once, so it shows the chip's full power; on a graphics card it shows its compute strength.

CPU rendering (Blender)

faster than 8% of tested · runs: 3

FX-8120
36+24 %

faster than 15% of tested · runs: 1

Median of real test runs on users' computers. It does not show FPS in games. Data updated: 31.10.2026.

Overview

Core i5-2400FX-8120
Score (0–100) 11.64 10.77
Ranking position 508 512
Power efficiency (0–100) 6.4 4.5
Type Desktop Desktop
Manufacturer Intel AMD
Architecture Sandy Bridge Bulldozer (Zambezi)
Release date Q1 2011 2011-10-12

Specifications

Core i5-2400FX-8120
Cores 4 8
Threads 4 8
Base clock 3.1 GHz 3.1 GHz
Boost clock 3.4 GHz 4 GHz
L2 cache no data 8 MB
L3 cache 6 MB 8 MB
Process node 32 nm 32 nm
Unlocked multiplier no yes
Integrated graphics Intel HD Graphics 2000 no
NPU (AI accelerator) no no

Compatibility

Core i5-2400FX-8120
Socket LGA1155 AM3+
TDP 95 W 125 W

Memory and PCI Express

Core i5-2400FX-8120
Memory type DDR3-1066/1333 no data
Memory channels 2 2
Max memory 32 GB no data
PCI Express version 2.0 no data
PCIe lanes 16 no data

Pros and cons

Core i5-2400

  • 8% higher overall score
  • 46% faster single core
  • lower TDP: 95 W vs 125 W
  • has integrated graphics (Intel HD Graphics 2000)

FX-8120

  • more cores: 8 vs 4
  • more threads: 8 vs 4
  • bigger L3 cache: 8 MB vs 6 MB
  • unlocked multiplier (can be overclocked)

Other comparisons

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