Core i5-12400F vs FX-8100

CPU

GPU

Core i5-12400F

6 Cores12 Thrd65 WWMax: 4.4 GHz2022

Core family

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FX-8100

8 Cores8 Thrd95 WWMax: 3.7 GHz2011

Similar parts

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Core i5-12400F vs FX-8100 Performance Spectrum

Core i5-12400F

6 / 12

19,532

+377.0%

4,095

0.0%

Ryzen Threadripper 3990X

About PassMark

PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

Core i5-12400F vs FX-8100 FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Core i5-12400F vs FX-8100: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Core i5-12400F

2022

Why buy it

✅Better for gaming: +128.1% higher average FPS across 50 shared CPU benchmark tests.
✅+125% larger total L3 cache (18 MB vs 8 MB).
✅Costs $126 less on MSRP ($174 MSRP vs $300 MSRP).
✅Delivers 722.4% more PassMark for each dollar spent, at 112.3 vs 13.7 PassMark/$ ($174 MSRP vs $300 MSRP).
✅Draws 65W instead of 95W, a 30W reduction.

Trade-offs

❌Lower Geekbench multi-core (657 vs 1,621).

FX-8100

2011

Why buy it

✅+146.7% higher Geekbench multi-core.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-12400F across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (8 MB vs 18 MB).
❌Lower PassMark per dollar, at 13.7 vs 112.3 PassMark/$ ($300 MSRP vs $174 MSRP).
❌46.2% higher power demand at 95W vs 65W.
❌Older platform position on AM3+, while Core i5-12400F moves to LGA1700 and DDR5.

Quick Answers

So, is Core i5-12400F better than FX-8100?

It depends on what you want from the system. For gaming, Core i5-12400F is ahead with a 128.1% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, FX-8100 pulls ahead with 146.7% better Geekbench multi-core. Core i5-12400F also has the bigger cache pool with 125% larger total L3 cache (18 MB vs 8 MB).

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, FX-8100 is the stronger fit. You are getting 146.7% better Geekbench multi-core, backed by 8 cores and 8 threads.

Which one is the smarter buy today, not just the cheaper CPU?

Core i5-12400F is the better buy right now. Core i5-12400F comes in $126 cheaper on MSRP at $174 MSRP versus $300 MSRP, and it still gives you a 128.1% average FPS lead across 50 shared CPU game tests in our data. The compromise is that FX-8100 is still stronger for heavier multi-core work with 146.7% better Geekbench multi-core. It is also 722.4% better value on MSRP (112.3 vs 13.7 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

Which one is more future-proof for 2026 and beyond?

Core i5-12400F makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2011), a healthier platform with LGA1700 and DDR5 instead of AM3+, and 125% larger total L3 cache (18 MB vs 8 MB). That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i5-12400F vs FX-8100 Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

Core i5-12400F

The Core i5-12400F is manufactured by Intel. It was released in 4 January 2022 (3 years ago). It is based on the Alder Lake-S (2022) architecture. It features 6 cores and 12 threads. Base frequency is 2.5 GHz, with boost up to 4.4 GHz. L3 cache: 18 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 65 Watt. Memory support: DDR5-4800, DDR4-3200. Passmark benchmark score: 19,532 points. Launch price was $180.

FX-8100

The FX-8100 is manufactured by AMD. It was released in 12 October 2011 (14 years ago). It is based on the Zambezi (2011−2012) architecture. It features 8 cores and 8 threads. Base frequency is 2.8 GHz, with boost up to 3.7 GHz. L3 cache: 8 MB (total). L2 cache: 8 MB. Built on 32 nm process technology. Socket: AM3+. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 4,095 points. Launch price was $69.

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Processing Power

The Core i5-12400F packs 6 cores / 12 threads, while the FX-8100 offers 8 cores / 8 threads — the FX-8100 has 2 more cores. Boost clocks reach 4.4 GHz on the Core i5-12400F versus 3.7 GHz on the FX-8100 — a 17.3% clock advantage for the Core i5-12400F (base: 2.5 GHz vs 2.8 GHz). The Core i5-12400F uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the FX-8100 uses Zambezi (2011−2012) (32 nm). In PassMark, the Core i5-12400F scores 19,532 against the FX-8100's 4,095 — a 130.7% lead for the Core i5-12400F. Geekbench 6 single-core — the metric most relevant to gaming — records 1,700 vs 455, a 115.5% lead for the Core i5-12400F that directly translates to higher frame rates. Multi-core Geekbench: 657 vs 1,621 (84.6% advantage for the FX-8100). L3 cache: 18 MB (total) on the Core i5-12400F vs 8 MB (total) on the FX-8100.

Feature	Core i5-12400F	FX-8100
Cores / Threads	6 / 12	8 / 8+33%
Boost Clock	4.4 GHz+19%	3.7 GHz
Base Clock	2.5 GHz	2.8 GHz+12%
L3 Cache	18 MB (total)+125%	8 MB (total)
L2 Cache	1.25 MB (per core)	8 MB+540%
Process	Intel 7 nm-78%	32 nm
Architecture	Alder Lake-S (2022)	Zambezi (2011−2012)
PassMark	19,532+377%	4,095
Cinebench R23 Multi	12,380	—
Geekbench 6 Single	1,700+274%	455
Geekbench 6 Multi	657	1,621+147%

🧠

Memory & Platform

The Core i5-12400F uses the LGA1700 socket (PCIe 3.0), while the FX-8100 uses AM3+ (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800, DDR4-3200 on the Core i5-12400F versus DDR3-1866 on the FX-8100 — the Core i5-12400F supports 157.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-12400F supports up to 128 GB of RAM compared to 16 GB — 700% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i5-12400F) vs 0 (FX-8100) — the Core i5-12400F offers 20 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400F) and AMD 990FX,AMD 970 (FX-8100).

Feature	Core i5-12400F	FX-8100
Socket	LGA1700	AM3+
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	DDR5-4800, DDR4-3200+157%	DDR3-1866
Max RAM Capacity	128 GB+700%	16 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	20	0

🔧

Advanced Features

Virtualization support: VT-x, VT-d, EPT (Core i5-12400F) vs AMD-V (FX-8100). Primary use case: Core i5-12400F targets Gaming Performance/Value. Direct competitor: Core i5-12400F rivals Ryzen 5 5600.

Feature	Core i5-12400F	FX-8100
Integrated GPU	No	No
Unlocked	—	Yes
AVX-512	—	No
Virtualization	VT-x, VT-d, EPT	AMD-V
Target Use	Gaming Performance/Value	—

💰

Value Analysis

At launch, the Core i5-12400F was priced at $174, while the FX-8100 came in at $300. On launch pricing ($174 vs $300), Core i5-12400F was $126 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-12400F delivers 112.3 pts/$ vs 13.7 pts/$ for the FX-8100 — making the Core i5-12400F the 156.6% better value option.

Feature	Core i5-12400F	FX-8100
MSRP	$174-42%	$300
Performance per Dollar	112.3+720%	13.7
Release Date	2022	2011

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