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 i5-12400

2022

Why buy it

✅+3.6% higher PassMark.
✅Costs $40 less on MSRP ($209 MSRP vs $249 MSRP).
✅Delivers 23.5% more PassMark for each dollar spent, at 89.9 vs 72.8 PassMark/$ ($209 MSRP vs $249 MSRP).
✅Draws 65W instead of 95W, a 30W reduction.
✅Newer platform on LGA1700 with DDR5 support instead of AM4 and DDR4.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 5 3600X across 46 shared CPU benchmark tests.
❌Smaller total L3 cache (18 MB vs 32 MB).

Ryzen 5 3600X

2019

Why buy it

✅Better for gaming: +4.8% higher average FPS across 46 shared CPU benchmark tests.
✅+77.8% larger total L3 cache (32 MB vs 18 MB).
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (18,136 vs 18,794).
❌Lower PassMark per dollar, at 72.8 vs 89.9 PassMark/$ ($249 MSRP vs $209 MSRP).
❌46.2% higher power demand at 95W vs 65W.
❌Older platform position on AM4 with DDR4, while Core i5-12400 moves to LGA1700 and DDR5.
❌No integrated graphics, while Core i5-12400 can still boot and troubleshoot without a discrete GPU.

Core i5-12400

2022

Ryzen 5 3600X

2019

Why buy it

✅+3.6% higher PassMark.
✅Costs $40 less on MSRP ($209 MSRP vs $249 MSRP).
✅Delivers 23.5% more PassMark for each dollar spent, at 89.9 vs 72.8 PassMark/$ ($209 MSRP vs $249 MSRP).
✅Draws 65W instead of 95W, a 30W reduction.
✅Newer platform on LGA1700 with DDR5 support instead of AM4 and DDR4.

Why buy it

✅Better for gaming: +4.8% higher average FPS across 46 shared CPU benchmark tests.
✅+77.8% larger total L3 cache (32 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 5 3600X across 46 shared CPU benchmark tests.
❌Smaller total L3 cache (18 MB vs 32 MB).

Trade-offs

❌Lower PassMark (18,136 vs 18,794).
❌Lower PassMark per dollar, at 72.8 vs 89.9 PassMark/$ ($249 MSRP vs $209 MSRP).
❌46.2% higher power demand at 95W vs 65W.
❌Older platform position on AM4 with DDR4, while Core i5-12400 moves to LGA1700 and DDR5.
❌No integrated graphics, while Core i5-12400 can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core i5-12400 better than Ryzen 5 3600X?

It depends on what matters more to you. For gaming, Ryzen 5 3600X is ahead with a 4.8% average FPS lead across 46 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i5-12400 pulls ahead with 3.6% better PassMark. Ryzen 5 3600X also has the bigger cache pool with 77.8% larger total L3 cache (32 MB vs 18 MB).

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

For streaming, content creation, and heavier multitasking, Core i5-12400 is the better fit. You are getting 3.6% better PassMark, backed by 6 cores and 12 threads.

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

Core i5-12400 is the smarter buy today. Core i5-12400 is $40 cheaper on MSRP at $209 MSRP versus $249 MSRP, and it gives you 3.6% better PassMark. The trade-off is that Ryzen 5 3600X is still the better pure gaming CPU with a 4.8% average FPS lead across 46 shared CPU game tests in our data. It is also 23.5% better value on MSRP (89.9 vs 72.8 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper. That said, if you already own a compatible AM4 + DDR4 setup, Ryzen 5 3600X can still make sense as a platform-matched option because it avoids a motherboard and RAM swap, but on MSRP alone you would want to find it meaningfully cheaper in real-world listings before that path becomes easy to justify.

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

Core i5-12400 is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2019), a healthier platform with LGA1700 and DDR5 instead of AM4, and more multi-core headroom with 6 cores / 12 threads instead of 6/12. 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 i5-12400 Benchmark Check

Ryzen 5 3600X Benchmark Check

Path of Exile 2

Preset	Core i5-12400	Ryzen 5 3600X
1080p
low	183 FPS	200 FPS
medium	168 FPS	162 FPS
high	139 FPS	136 FPS
ultra	119 FPS	110 FPS
1440p
low	153 FPS	155 FPS
medium	132 FPS	121 FPS
high	106 FPS	99 FPS
ultra	89 FPS	80 FPS
4K
low	87 FPS	84 FPS
medium	81 FPS	71 FPS
high	64 FPS	56 FPS
ultra	49 FPS	44 FPS

Open Core i5-12400 Open Ryzen 5 3600X

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i5-12400	Ryzen 5 3600X
1080p
low	470 FPS	453 FPS
medium	397 FPS	438 FPS
high	341 FPS	361 FPS
ultra	301 FPS	319 FPS
1440p
low	407 FPS	453 FPS
medium	351 FPS	395 FPS
high	309 FPS	336 FPS
ultra	265 FPS	288 FPS
4K
low	282 FPS	324 FPS
medium	248 FPS	277 FPS
high	229 FPS	248 FPS
ultra	196 FPS	214 FPS

Open Core i5-12400 Open Ryzen 5 3600X

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i5-12400	Ryzen 5 3600X
1080p
low	470 FPS	453 FPS
medium	470 FPS	453 FPS
high	470 FPS	453 FPS
ultra	470 FPS	453 FPS
1440p
low	470 FPS	453 FPS
medium	470 FPS	453 FPS
high	470 FPS	453 FPS
ultra	434 FPS	446 FPS
4K
low	442 FPS	453 FPS
medium	389 FPS	375 FPS
high	337 FPS	317 FPS
ultra	274 FPS	248 FPS

Open Core i5-12400 Open Ryzen 5 3600X

League of Legends

League of Legends

Valorant

Preset	Core i5-12400	Ryzen 5 3600X
1080p
low	470 FPS	453 FPS
medium	470 FPS	453 FPS
high	470 FPS	453 FPS
ultra	470 FPS	453 FPS
1440p
low	470 FPS	453 FPS
medium	470 FPS	453 FPS
high	470 FPS	453 FPS
ultra	470 FPS	453 FPS
4K
low	470 FPS	453 FPS
medium	450 FPS	453 FPS
high	391 FPS	442 FPS
ultra	330 FPS	390 FPS

Open Core i5-12400 Open Ryzen 5 3600X

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i5-12400 and Ryzen 5 3600X

Core i5-12400

The Core i5-12400 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: 18,794 points. Launch price was $299.

Ryzen 5 3600X

The Ryzen 5 3600X is manufactured by AMD. It was released in 7 July 2019 (6 years ago). It is based on the Matisse (2019−2020) architecture. It features 6 cores and 12 threads. Base frequency is 3.8 GHz, with boost up to 4.4 GHz. L3 cache: 32 MB (total). L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 95 Watt. Memory support: DDR4 Dual-channel. Passmark benchmark score: 18,136 points. Launch price was $249.

⚡

Processing Power

Both the Core i5-12400 and Ryzen 5 3600X share an identical 6-core/12-thread configuration. Boost clocks reach 4.4 GHz on the Core i5-12400 versus 4.4 GHz on the Ryzen 5 3600X — identical boost frequencies (base: 2.5 GHz vs 3.8 GHz). The Core i5-12400 uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the Ryzen 5 3600X uses Matisse (2019−2020) (7 nm, 12 nm). In PassMark, the Core i5-12400 scores 18,794 against the Ryzen 5 3600X's 18,136 — a 3.6% lead for the Core i5-12400. L3 cache: 18 MB (total) on the Core i5-12400 vs 32 MB (total) on the Ryzen 5 3600X.

Feature	Core i5-12400	Ryzen 5 3600X
Cores / Threads	6 / 12	6 / 12
Boost Clock	4.4 GHz	4.4 GHz
Base Clock	2.5 GHz	3.8 GHz+52%
L3 Cache	18 MB (total)	32 MB (total)+78%
L2 Cache	1.25 MB (per core)+150%	512K (per core)
Process	Intel 7 nm	7 nm, 12 nm
Architecture	Alder Lake-S (2022)	Matisse (2019−2020)
PassMark	18,794+4%	18,136
Cinebench R23 Multi	12,400	—
Geekbench 6 Single	2,381	—
Geekbench 6 Multi	10,632	—

🧠

Memory & Platform

The Core i5-12400 uses the LGA1700 socket (PCIe 5.0), while the Ryzen 5 3600X uses AM4 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800, DDR4-3200 on the Core i5-12400 versus DDR4-3200 on the Ryzen 5 3600X — the Core i5-12400 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 i5-12400) vs 24 (Ryzen 5 3600X) — the Ryzen 5 3600X offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400) and AMD 500 series,AMD 400 series (Ryzen 5 3600X).

Feature	Core i5-12400	Ryzen 5 3600X
Socket	LGA1700	AM4
PCIe Generation	PCIe 5.0+67%	PCIe 3.0
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: VT-x, VT-d, EPT (Core i5-12400) / not specified (Ryzen 5 3600X). The Core i5-12400 includes integrated graphics (UHD Graphics 730), while the Ryzen 5 3600X requires a dedicated GPU. Primary use case: Core i5-12400 targets Gaming Performance/Value. Direct competitor: Core i5-12400 rivals Ryzen 5 5600.

Feature	Core i5-12400	Ryzen 5 3600X
Integrated GPU	Yes	No
IGPU Model	UHD Graphics 730	—
Virtualization	VT-x, VT-d, EPT	—
Target Use	Gaming Performance/Value	—

💰

Value Analysis

The Core i5-12400 launched at $209 MSRP, while the Ryzen 5 3600X debuted at $249. On MSRP ($209 vs $249), the Core i5-12400 is $40 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-12400 delivers 89.9 pts/$ vs 72.8 pts/$ for the Ryzen 5 3600X — making the Core i5-12400 the 21% better value option.