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.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

Core i5-12400F

2022

Why buy it

✅Costs $375 less on MSRP ($174 MSRP vs $549 MSRP).
✅Delivers 81.7% more PassMark for each dollar spent, at 112.3 vs 61.8 PassMark/$ ($174 MSRP vs $549 MSRP).
✅Newer platform on LGA1700 with DDR5 support instead of AM4 and DDR4.
✅Includes a boxed cooler (Yes), unlike Ryzen 9 5900.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900 across 6 shared CPU benchmark tests.
❌Lower PassMark (19,532 vs 33,912).
❌Smaller total L3 cache (18 MB vs 64 MB).

Ryzen 9 5900

2021

Why buy it

✅Better for gaming: +18.9% higher average FPS across 6 shared CPU benchmark tests.
✅+255.6% larger total L3 cache (64 MB vs 18 MB).
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark per dollar, at 61.8 vs 112.3 PassMark/$ ($549 MSRP vs $174 MSRP).
❌Older platform position on AM4 with DDR4, while Core i5-12400F moves to LGA1700 and DDR5.
❌No boxed cooler included, unlike Core i5-12400F.

Core i5-12400F

2022

Ryzen 9 5900

2021

Why buy it

✅Costs $375 less on MSRP ($174 MSRP vs $549 MSRP).
✅Delivers 81.7% more PassMark for each dollar spent, at 112.3 vs 61.8 PassMark/$ ($174 MSRP vs $549 MSRP).
✅Newer platform on LGA1700 with DDR5 support instead of AM4 and DDR4.
✅Includes a boxed cooler (Yes), unlike Ryzen 9 5900.

Why buy it

✅Better for gaming: +18.9% higher average FPS across 6 shared CPU benchmark tests.
✅+255.6% larger total L3 cache (64 MB vs 18 MB).
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900 across 6 shared CPU benchmark tests.
❌Lower PassMark (19,532 vs 33,912).
❌Smaller total L3 cache (18 MB vs 64 MB).

Trade-offs

❌Lower PassMark per dollar, at 61.8 vs 112.3 PassMark/$ ($549 MSRP vs $174 MSRP).
❌Older platform position on AM4 with DDR4, while Core i5-12400F moves to LGA1700 and DDR5.
❌No boxed cooler included, unlike Core i5-12400F.

Quick Answers

So, is Ryzen 9 5900 better than Core i5-12400F?

Yes. Ryzen 9 5900 is the better overall CPU here. You are getting a 18.9% average FPS lead across 6 shared CPU game tests in our data and 73.6% better PassMark, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 5900 is the better pick here. According to our tests, it delivers 18.9% more average FPS across 6 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 5900 is the better fit. You are getting 73.6% better PassMark, backed by 12 cores and 24 threads. It also carries the larger cache pool with 255.6% larger total L3 cache (64 MB vs 18 MB).

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

Ryzen 9 5900 is still the faster CPU overall, but Core i5-12400F makes more sense if price matters more than absolute performance. Ryzen 9 5900 is 215.5% more expensive on MSRP at $549 MSRP versus $174 MSRP, and it gives you a 18.9% average FPS lead across 6 shared CPU game tests in our data. Core i5-12400F is also 81.7% better value on MSRP (112.3 vs 61.8 PassMark/$), which is why it is easier to justify for price-conscious builds on paper. That said, if you already own a compatible LGA1700 + DDR5 setup, Core i5-12400F can still make sense as a platform-matched option because it avoids a motherboard and RAM swap.

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

Core i5-12400F is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2021) and a healthier platform with LGA1700 and DDR5 instead of AM4. That should give you a better long-term upgrade path for motherboard, RAM, and future CPU swaps.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Core i5-12400F Benchmark Check

Ryzen 9 5900 Benchmark Check

Path of Exile 2

Preset	Core i5-12400F	Ryzen 9 5900
1080p
low	183 FPS	164 FPS
medium	168 FPS	135 FPS
high	139 FPS	117 FPS
ultra	119 FPS	98 FPS
1440p
low	153 FPS	150 FPS
medium	132 FPS	120 FPS
high	106 FPS	99 FPS
ultra	89 FPS	83 FPS
4K
low	87 FPS	84 FPS
medium	81 FPS	72 FPS
high	64 FPS	58 FPS
ultra	49 FPS	47 FPS

Open Core i5-12400F Open Ryzen 9 5900

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i5-12400F	Ryzen 9 5900
1080p
low	471 FPS	734 FPS
medium	397 FPS	625 FPS
high	341 FPS	495 FPS
ultra	301 FPS	437 FPS
1440p
low	407 FPS	608 FPS
medium	351 FPS	529 FPS
high	309 FPS	440 FPS
ultra	265 FPS	361 FPS
4K
low	282 FPS	358 FPS
medium	248 FPS	314 FPS
high	229 FPS	286 FPS
ultra	196 FPS	253 FPS

Open Core i5-12400F Open Ryzen 9 5900

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i5-12400F	Ryzen 9 5900
1080p
low	488 FPS	805 FPS
medium	488 FPS	627 FPS
high	488 FPS	543 FPS
ultra	488 FPS	449 FPS
1440p
low	488 FPS	690 FPS
medium	488 FPS	543 FPS
high	485 FPS	469 FPS
ultra	434 FPS	393 FPS
4K
low	442 FPS	490 FPS
medium	389 FPS	404 FPS
high	337 FPS	359 FPS
ultra	274 FPS	296 FPS

Open Core i5-12400F Open Ryzen 9 5900

League of Legends

League of Legends

Valorant

Preset	Core i5-12400F	Ryzen 9 5900
1080p
low	488 FPS	848 FPS
medium	488 FPS	848 FPS
high	488 FPS	836 FPS
ultra	488 FPS	744 FPS
1440p
low	488 FPS	848 FPS
medium	488 FPS	760 FPS
high	488 FPS	665 FPS
ultra	473 FPS	570 FPS
4K
low	488 FPS	626 FPS
medium	450 FPS	559 FPS
high	391 FPS	494 FPS
ultra	330 FPS	426 FPS

Open Core i5-12400F Open Ryzen 9 5900

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i5-12400F and Ryzen 9 5900

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.

Ryzen 9 5900

The Ryzen 9 5900 is manufactured by AMD. It was released in 12 January 2021 (4 years ago). It is based on the Vermeer (2020−2025) architecture. It features 12 cores and 24 threads. Base frequency is 3 GHz, with boost up to 4.7 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4-3200. Passmark benchmark score: 33,912 points. Launch price was $499.

⚡

Processing Power

The Core i5-12400F packs 6 cores / 12 threads, while the Ryzen 9 5900 offers 12 cores / 24 threads — the Ryzen 9 5900 has 6 more cores. Boost clocks reach 4.4 GHz on the Core i5-12400F versus 4.7 GHz on the Ryzen 9 5900 — a 6.6% clock advantage for the Ryzen 9 5900 (base: 2.5 GHz vs 3 GHz). The Core i5-12400F uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the Ryzen 9 5900 uses Vermeer (2020−2025) (7 nm, 12 nm). In PassMark, the Core i5-12400F scores 19,532 against the Ryzen 9 5900's 33,912 — a 53.8% lead for the Ryzen 9 5900. L3 cache: 18 MB (total) on the Core i5-12400F vs 64 MB on the Ryzen 9 5900.

Feature	Core i5-12400F	Ryzen 9 5900
Cores / Threads	6 / 12	12 / 24+100%
Boost Clock	4.4 GHz	4.7 GHz+7%
Base Clock	2.5 GHz	3 GHz+20%
L3 Cache	18 MB (total)	64 MB+256%
L2 Cache	1.25 MB (per core)+150%	512K (per core)
Process	Intel 7 nm	7 nm, 12 nm
Architecture	Alder Lake-S (2022)	Vermeer (2020−2025)
PassMark	19,532	33,912+74%
Cinebench R23 Multi	12,380	—
Geekbench 6 Single	1,700	—
Geekbench 6 Multi	657	—

🧠

Memory & Platform

The Core i5-12400F uses the LGA1700 socket (PCIe 3.0), while the Ryzen 9 5900 uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800, DDR4-3200 on the Core i5-12400F versus DDR4-3200 on the Ryzen 9 5900 — the Core i5-12400F supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 128 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i5-12400F) vs 24 (Ryzen 9 5900) — the Ryzen 9 5900 offers 4 more lanes for additional GPUs or NVMe drives.

Feature	Core i5-12400F	Ryzen 9 5900
Socket	LGA1700	AM4
PCIe Generation	PCIe 3.0	PCIe 4.0+33%
Max RAM Speed	DDR5-4800, DDR4-3200+25%	DDR4-3200
Max RAM Capacity	128 GB	128 GB
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	20	24+20%

🔧

Advanced Features

Virtualization support: VT-x, VT-d, EPT (Core i5-12400F) vs AMD-V (Ryzen 9 5900). Primary use case: Core i5-12400F targets Gaming Performance/Value, Ryzen 9 5900 targets OEM Gaming. Direct competitor: Core i5-12400F rivals Ryzen 5 5600.

Feature	Core i5-12400F	Ryzen 9 5900
Integrated GPU	No	No
Unlocked	—	Yes
AVX-512	—	No
Virtualization	VT-x, VT-d, EPT	AMD-V
Target Use	Gaming Performance/Value	OEM Gaming

💰

Value Analysis

The Core i5-12400F launched at $174 MSRP, while the Ryzen 9 5900 debuted at $549. On MSRP ($174 vs $549), the Core i5-12400F is $375 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-12400F delivers 112.3 pts/$ vs 61.8 pts/$ for the Ryzen 9 5900 — making the Core i5-12400F the 58% better value option.