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

✅Costs $140 less on MSRP ($209 MSRP vs $349 MSRP).
✅Draws 65W instead of 105W, a 40W reduction.
✅Newer platform on LGA1700 with DDR5 support instead of AM4 and DDR4.
✅Integrated graphics onboard with UHD Graphics 730, while Ryzen 9 5900XT needs a discrete GPU.
✅Includes a boxed cooler (Yes), unlike Ryzen 9 5900XT.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900XT across 3 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (12,400 vs 22,000).
❌Smaller total L3 cache (18 MB vs 64 MB).
❌Lower PassMark per dollar, at 89.9 vs 126.4 PassMark/$ ($209 MSRP vs $349 MSRP).

Ryzen 9 5900XT

2024

Why buy it

✅Better for gaming: +51.6% higher average FPS across 3 shared CPU benchmark tests.
✅+255.6% larger total L3 cache (64 MB vs 18 MB).
✅Delivers 40.5% more PassMark for each dollar spent, at 126.4 vs 89.9 PassMark/$ ($349 MSRP vs $209 MSRP).
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌
67% HIGHER MSRP
$349 MSRPvs$209 MSRP
❌61.5% higher power demand at 105W 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.
❌No boxed cooler included, unlike Core i5-12400.

Core i5-12400

2022

Ryzen 9 5900XT

2024

Why buy it

✅Costs $140 less on MSRP ($209 MSRP vs $349 MSRP).
✅Draws 65W instead of 105W, a 40W reduction.
✅Newer platform on LGA1700 with DDR5 support instead of AM4 and DDR4.
✅Integrated graphics onboard with UHD Graphics 730, while Ryzen 9 5900XT needs a discrete GPU.
✅Includes a boxed cooler (Yes), unlike Ryzen 9 5900XT.

Why buy it

✅Better for gaming: +51.6% higher average FPS across 3 shared CPU benchmark tests.
✅+255.6% larger total L3 cache (64 MB vs 18 MB).
✅Delivers 40.5% more PassMark for each dollar spent, at 126.4 vs 89.9 PassMark/$ ($349 MSRP vs $209 MSRP).
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900XT across 3 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (12,400 vs 22,000).
❌Smaller total L3 cache (18 MB vs 64 MB).
❌Lower PassMark per dollar, at 89.9 vs 126.4 PassMark/$ ($209 MSRP vs $349 MSRP).

Trade-offs

❌
67% HIGHER MSRP
$349 MSRPvs$209 MSRP
❌61.5% higher power demand at 105W 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.
❌No boxed cooler included, unlike Core i5-12400.

Quick Answers

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

Yes. Ryzen 9 5900XT is the better overall CPU here. You are getting a 51.6% average FPS lead across 3 shared CPU game tests in our data, 77.4% better Cinebench R23 multi-core, and 134.7% higher PassMark, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 5900XT is the better pick here. According to our tests, it delivers 51.6% more average FPS across 3 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 5900XT is the better fit. You are getting 77.4% better Cinebench R23 multi-core, backed by 16 cores and 32 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 5900XT is the smarter buy today. Ryzen 9 5900XT is 67.0% more expensive on MSRP at $349 MSRP versus $209 MSRP, and it gives you a 51.6% average FPS lead across 3 shared CPU game tests in our data. It is also 40.5% better value on MSRP (126.4 vs 89.9 PassMark/$), 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 LGA1700 + DDR5 setup, Core i5-12400 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 i5-12400 is the more future-proof choice for 2026 and beyond. You are getting 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 i5-12400 Benchmark Check

Ryzen 9 5900XT Benchmark Check

Path of Exile 2

Preset	Core i5-12400	Ryzen 9 5900XT
1080p
low	183 FPS	285 FPS
medium	168 FPS	260 FPS
high	139 FPS	214 FPS
ultra	119 FPS	181 FPS
1440p
low	153 FPS	261 FPS
medium	132 FPS	216 FPS
high	106 FPS	167 FPS
ultra	89 FPS	148 FPS
4K
low	87 FPS	181 FPS
medium	81 FPS	150 FPS
high	64 FPS	115 FPS
ultra	49 FPS	102 FPS

Open Core i5-12400 Open Ryzen 9 5900XT

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i5-12400	Ryzen 9 5900XT
1080p
low	470 FPS	667 FPS
medium	397 FPS	573 FPS
high	341 FPS	456 FPS
ultra	301 FPS	402 FPS
1440p
low	407 FPS	538 FPS
medium	351 FPS	475 FPS
high	309 FPS	398 FPS
ultra	265 FPS	325 FPS
4K
low	282 FPS	316 FPS
medium	248 FPS	280 FPS
high	229 FPS	257 FPS
ultra	196 FPS	228 FPS

Open Core i5-12400 Open Ryzen 9 5900XT

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i5-12400	Ryzen 9 5900XT
1080p
low	470 FPS	839 FPS
medium	470 FPS	667 FPS
high	470 FPS	594 FPS
ultra	470 FPS	504 FPS
1440p
low	470 FPS	665 FPS
medium	470 FPS	527 FPS
high	470 FPS	458 FPS
ultra	434 FPS	386 FPS
4K
low	442 FPS	474 FPS
medium	389 FPS	392 FPS
high	337 FPS	349 FPS
ultra	274 FPS	290 FPS

Open Core i5-12400 Open Ryzen 9 5900XT

League of Legends

League of Legends

Valorant

Preset	Core i5-12400	Ryzen 9 5900XT
1080p
low	470 FPS	1073 FPS
medium	470 FPS	972 FPS
high	470 FPS	850 FPS
ultra	470 FPS	766 FPS
1440p
low	470 FPS	846 FPS
medium	470 FPS	751 FPS
high	470 FPS	657 FPS
ultra	470 FPS	570 FPS
4K
low	470 FPS	622 FPS
medium	450 FPS	556 FPS
high	391 FPS	491 FPS
ultra	330 FPS	425 FPS

Open Core i5-12400 Open Ryzen 9 5900XT

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

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

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 9 5900XT

The Ryzen 9 5900XT is manufactured by AMD. It was released in 31 July 2024 (1 year ago). It is based on the Vermeer (2020−2025) architecture. It features 16 cores and 32 threads. Base frequency is 3.3 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512 kB (per core). Built on 7 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4. Passmark benchmark score: 44,105 points. Launch price was $349.

⚡

Processing Power

The Core i5-12400 packs 6 cores / 12 threads, while the Ryzen 9 5900XT offers 16 cores / 32 threads — the Ryzen 9 5900XT has 10 more cores. Boost clocks reach 4.4 GHz on the Core i5-12400 versus 4.8 GHz on the Ryzen 9 5900XT — a 8.7% clock advantage for the Ryzen 9 5900XT (base: 2.5 GHz vs 3.3 GHz). The Core i5-12400 uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the Ryzen 9 5900XT uses Vermeer (2020−2025) (7 nm). In PassMark, the Core i5-12400 scores 18,794 against the Ryzen 9 5900XT's 44,105 — a 80.5% lead for the Ryzen 9 5900XT. Cinebench R23 multi-core: 12,400 vs 22,000 (55.8% advantage for the Ryzen 9 5900XT). Geekbench 6 single-core — the metric most relevant to gaming — records 2,381 vs 2,320, a 2.6% lead for the Core i5-12400 that directly translates to higher frame rates. Multi-core Geekbench: 10,632 vs 14,000 (27.3% advantage for the Ryzen 9 5900XT). L3 cache: 18 MB (total) on the Core i5-12400 vs 64 MB on the Ryzen 9 5900XT.

Feature	Core i5-12400	Ryzen 9 5900XT
Cores / Threads	6 / 12	16 / 32+167%
Boost Clock	4.4 GHz	4.8 GHz+9%
Base Clock	2.5 GHz	3.3 GHz+32%
L3 Cache	18 MB (total)	64 MB+256%
L2 Cache	1.25 MB (per core)+150%	512 kB (per core)
Process	Intel 7 nm	7 nm
Architecture	Alder Lake-S (2022)	Vermeer (2020−2025)
PassMark	18,794	44,105+135%
Cinebench R23 Multi	12,400	22,000+77%
Geekbench 6 Single	2,381+3%	2,320
Geekbench 6 Multi	10,632	14,000+32%

🧠

Memory & Platform

The Core i5-12400 uses the LGA1700 socket (PCIe 5.0), while the Ryzen 9 5900XT uses AM4 (PCIe 4.0) — 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 9 5900XT — 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 9 5900XT) — the Ryzen 9 5900XT offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400) and X570,B550,A520,X470,B450 (Ryzen 9 5900XT).

Feature	Core i5-12400	Ryzen 9 5900XT
Socket	LGA1700	AM4
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
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 support: VT-x, VT-d, EPT (Core i5-12400) vs AMD-V (Ryzen 9 5900XT). The Core i5-12400 includes integrated graphics (UHD Graphics 730), while the Ryzen 9 5900XT requires a dedicated GPU. Primary use case: Core i5-12400 targets Gaming Performance/Value, Ryzen 9 5900XT targets High End Desktop. Direct competitor: Core i5-12400 rivals Ryzen 5 5600.

Feature	Core i5-12400	Ryzen 9 5900XT
Integrated GPU	Yes	No
IGPU Model	UHD Graphics 730	—
Unlocked	—	Yes
AVX-512	—	No
Virtualization	VT-x, VT-d, EPT	AMD-V
Target Use	Gaming Performance/Value	High End Desktop

💰

Value Analysis

The Core i5-12400 launched at $209 MSRP, while the Ryzen 9 5900XT debuted at $349. On MSRP ($209 vs $349), the Core i5-12400 is $140 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-12400 delivers 89.9 pts/$ vs 126.4 pts/$ for the Ryzen 9 5900XT — making the Ryzen 9 5900XT the 33.7% better value option.