Athlon II Neo K145 vs Core i5-12400F

Athlon II Neo K145 vs Core i5-12400F Performance Spectrum

Athlon II Neo K145

1 / 1

565

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Core i5-12400F

6 / 12

19,532

+3357.0%

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.

Athlon II Neo K145 vs Core i5-12400F 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.

Athlon II Neo K145 vs Core i5-12400F: Pros, Cons & Final Verdict

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

Athlon II Neo K145

2010

Why buy it

✅Costs $124 less on MSRP ($50 MSRP vs $174 MSRP).
✅Draws 1W instead of 65W, a 64W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-12400F across 49 shared CPU benchmark tests.
❌Lower PassMark (565 vs 19,532).
❌Lower PassMark per dollar, at 11.3 vs 112.3 PassMark/$ ($50 MSRP vs $174 MSRP).
❌Older platform position on S1, while Core i5-12400F moves to LGA1700 and DDR5.
❌No boxed cooler included, unlike Core i5-12400F.

Core i5-12400F

2022

Why buy it

✅Better for gaming: +1374.7% higher average FPS across 49 shared CPU benchmark tests.
✅Delivers 893.4% more PassMark for each dollar spent, at 112.3 vs 11.3 PassMark/$ ($174 MSRP vs $50 MSRP).
✅Newer platform on LGA1700 with DDR5 support instead of S1 and older memory support.
✅100+% more PCIe lanes (20 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Athlon II Neo K145.

Trade-offs

❌
248% HIGHER MSRP
$174 MSRPvs$50 MSRP
❌6400% higher power demand at 65W vs 1W.

Quick Answers

So, is Core i5-12400F better than Athlon II Neo K145?

Yes. Core i5-12400F is the better all-around CPU here. It gives you a 1374.7% average FPS lead across 49 shared CPU game tests in our data, 3357% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Core i5-12400F is the better pick. According to our tests, it delivers 1374.7% more average FPS across 49 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Core i5-12400F is the stronger fit. You are getting 3357% better PassMark, backed by 6 cores and 12 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 248.0% more expensive on MSRP at $174 MSRP versus $50 MSRP, and it still gives you a 1374.7% average FPS lead across 49 shared CPU game tests in our data. It is also 893.4% better value on MSRP (112.3 vs 11.3 PassMark/$), 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 2010), a healthier platform with LGA1700 and DDR5 instead of S1, and more multi-core headroom with 6 cores / 12 threads instead of 1/1. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Athlon II Neo K145 vs Core i5-12400F Technical Specifications

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

Athlon II Neo K145

The Athlon II Neo K145 is manufactured by AMD. It was released in 2009-01-01. It is based on the Nile (2010) architecture. It features 1 cores and 1 threads. Max frequency: 1.8 GHz. L2 cache: 1 MB. Built on 45 nm process technology. Socket: S1. Thermal design power (TDP): 1 MB. Memory support: DDR3. Passmark benchmark score: 565 points. Launch price was $149.

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.

⚡

Processing Power

The Athlon II Neo K145 packs 1 cores / 1 threads, while the Core i5-12400F offers 6 cores / 12 threads — the Core i5-12400F has 5 more cores. Boost clocks reach 1.8 GHz on the Athlon II Neo K145 versus 4.4 GHz on the Core i5-12400F — a 83.9% clock advantage for the Core i5-12400F. The Athlon II Neo K145 uses the Nile (2010) architecture (45 nm), while the Core i5-12400F uses Alder Lake-S (2022) (Intel 7 nm). In PassMark, the Athlon II Neo K145 scores 565 against the Core i5-12400F's 19,532 — a 188.8% lead for the Core i5-12400F.

Feature	Athlon II Neo K145	Core i5-12400F
Cores / Threads	1 / 1	6 / 12+500%
Boost Clock	1.8 GHz	4.4 GHz+144%
Base Clock	—	2.5 GHz
L3 Cache	—	18 MB (total)
L2 Cache	1 MB	1.25 MB (per core)+25%
Process	45 nm	Intel 7 nm-84%
Architecture	Nile (2010)	Alder Lake-S (2022)
PassMark	565	19,532+3357%
Cinebench R23 Multi	—	12,380
Geekbench 6 Single	—	1,700
Geekbench 6 Multi	—	657

🧠

Memory & Platform

The Athlon II Neo K145 uses the S1 socket (PCIe 2.0), while the Core i5-12400F uses LGA1700 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1066 on the Athlon II Neo K145 versus DDR5-4800, DDR4-3200 on the Core i5-12400F — the Core i5-12400F supports 350.3% 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 4 GB — 3100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Athlon II Neo K145) vs 20 (Core i5-12400F) — the Core i5-12400F offers 20 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD ASB2 (Athlon II Neo K145) and H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400F).

Feature	Athlon II Neo K145	Core i5-12400F
Socket	S1	LGA1700
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	DDR3-1066	DDR5-4800, DDR4-3200+350%
Max RAM Capacity	4 GB	128 GB+3100%
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	0	20

🔧

Advanced Features

Virtualization: not specified (Athlon II Neo K145) / VT-x, VT-d, EPT (Core i5-12400F). Primary use case: Core i5-12400F targets Gaming Performance/Value. Direct competitor: Core i5-12400F rivals Ryzen 5 5600.

Feature	Athlon II Neo K145	Core i5-12400F
Integrated GPU	No	No
Virtualization	—	VT-x, VT-d, EPT
Target Use	—	Gaming Performance/Value

💰

Value Analysis

At launch, the Athlon II Neo K145 was priced at $50, while the Core i5-12400F came in at $174. On launch pricing ($50 vs $174), Athlon II Neo K145 was $124 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon II Neo K145 delivers 11.3 pts/$ vs 112.3 pts/$ for the Core i5-12400F — making the Core i5-12400F the 163.4% better value option.

Feature	Athlon II Neo K145	Core i5-12400F
MSRP	$50-71%	$174
Performance per Dollar	11.3	112.3+894%
Release Date	2010	2022

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