Core i9-12900H vs Ryzen 9 5900X

CPU

GPU

Core i9-12900H

14 Cores20 Thrd45 WWMax: 5 GHz2022

Core family

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Ryzen 9 5900X

12 Cores24 Thrd105 WWMax: 4.8 GHz2020

Ryzen family

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Core i9-12900H vs Ryzen 9 5900X Performance Spectrum

Core i9-12900H

14 / 20

27,079

0.0%

38,955

+43.9%

Ryzen Threadripper 9960X

Ryzen Threadripper PRO 9975WX

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 i9-12900H vs Ryzen 9 5900X 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 i9-12900H vs Ryzen 9 5900X: Pros, Cons & Final Verdict

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

Core i9-12900H

2022

Why buy it

✅Draws 45W instead of 105W, a 60W reduction.
✅Newer platform on FCBGA1744 with DDR5 support instead of AM4 and DDR4.
✅Integrated graphics onboard with Iris Xe Graphics 96EU, while Ryzen 9 5900X needs a discrete GPU.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (16,500 vs 21,000).
❌Smaller total L3 cache (24 MB vs 64 MB).
❌Lower PassMark per dollar, at 43.9 vs 71.0 PassMark/$ ($617 MSRP vs $549 MSRP).

Ryzen 9 5900X

2020

Why buy it

✅Better for gaming: +17.9% higher average FPS across 50 shared CPU benchmark tests.
✅+166.7% larger total L3 cache (64 MB vs 24 MB).
✅Costs $68 less on MSRP ($549 MSRP vs $617 MSRP).
✅Delivers 61.7% more PassMark for each dollar spent, at 71.0 vs 43.9 PassMark/$ ($549 MSRP vs $617 MSRP).
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌133.3% higher power demand at 105W vs 45W.
❌Older platform position on AM4 with DDR4, while Core i9-12900H moves to FCBGA1744 and DDR5.
❌No integrated graphics, while Core i9-12900H can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Ryzen 9 5900X better than Core i9-12900H?

Yes. Ryzen 9 5900X is the better all-around CPU here. It gives you a 17.9% average FPS lead across 50 shared CPU game tests in our data, 27.3% better Cinebench R23 multi-core, and 43.9% higher PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 5900X is the better pick. According to our tests, it delivers 17.9% more average FPS across 50 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 5900X is the stronger fit. You are getting 27.3% better Cinebench R23 multi-core, backed by 12 cores and 24 threads. It also has the larger cache pool with 166.7% larger total L3 cache (64 MB vs 24 MB).

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

Ryzen 9 5900X is the better buy right now. Ryzen 9 5900X comes in $68 cheaper on MSRP at $549 MSRP versus $617 MSRP, and it still gives you a 17.9% average FPS lead across 50 shared CPU game tests in our data. It is also 61.7% better value on MSRP (71.0 vs 43.9 PassMark/$), 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 i9-12900H makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2020) and a healthier platform with FCBGA1744 and DDR5 instead of AM4. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i9-12900H vs Ryzen 9 5900X Technical Specifications

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

Core i9-12900H

The Core i9-12900H is manufactured by Intel. It was released in 4 January 2022 (3 years ago). It is based on the Alder Lake-H (2022) architecture. It features 14 cores and 20 threads. Base frequency is 2.5 GHz, with boost up to 5 GHz. L3 cache: 24 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: FCBGA1744. Thermal design power (TDP): 45 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 27,079 points. Launch price was $299.

Ryzen 9 5900X

The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4-3200. Passmark benchmark score: 38,955 points. Launch price was $549.

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Processing Power

The Core i9-12900H packs 14 cores / 20 threads, while the Ryzen 9 5900X offers 12 cores / 24 threads — the Core i9-12900H has 2 more cores. Boost clocks reach 5 GHz on the Core i9-12900H versus 4.8 GHz on the Ryzen 9 5900X — a 4.1% clock advantage for the Core i9-12900H (base: 2.5 GHz vs 3.7 GHz). The Core i9-12900H uses the Alder Lake-H (2022) architecture (Intel 7 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the Core i9-12900H scores 27,079 against the Ryzen 9 5900X's 38,955 — a 36% lead for the Ryzen 9 5900X. Cinebench R23 multi-core: 16,500 vs 21,000 (24% advantage for the Ryzen 9 5900X). Geekbench 6 single-core — the metric most relevant to gaming — records 2,400 vs 2,174, a 9.9% lead for the Core i9-12900H that directly translates to higher frame rates. Multi-core Geekbench: 12,900 vs 11,888 (8.2% advantage for the Core i9-12900H). L3 cache: 24 MB (total) on the Core i9-12900H vs 64 MB on the Ryzen 9 5900X.

Feature	Core i9-12900H	Ryzen 9 5900X
Cores / Threads	14 / 20+17%	12 / 24
Boost Clock	5 GHz+4%	4.8 GHz
Base Clock	2.5 GHz	3.7 GHz+48%
L3 Cache	24 MB (total)	64 MB+167%
L2 Cache	1.25 MB (per core)	512K (per core)+40860%
Process	Intel 7 nm	7 nm, 12 nm
Architecture	Alder Lake-H (2022)	Vermeer (Zen3) (2020−2022)
PassMark	27,079	38,955+44%
Cinebench R23 Multi	16,500	21,000+27%
Geekbench 6 Single	2,400+10%	2,174
Geekbench 6 Multi	12,900+9%	11,888

🧠

Memory & Platform

The Core i9-12900H uses the FCBGA1744 socket (PCIe 5.0), while the Ryzen 9 5900X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800 on the Core i9-12900H versus DDR4-3200 on the Ryzen 9 5900X — the Core i9-12900H supports 50% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 9 5900X supports up to 128 GB of RAM compared to 64 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i9-12900H) vs 24 (Ryzen 9 5900X) — the Ryzen 9 5900X offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel 600 Series (Mobile) (Core i9-12900H) and A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X).

Feature	Core i9-12900H	Ryzen 9 5900X
Socket	FCBGA1744	AM4
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	DDR5-4800+50%	DDR4-3200
Max RAM Capacity	64 GB	128 GB+100%
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	20	24+20%

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Virtualization support: Yes (Core i9-12900H) vs AMD-V (Ryzen 9 5900X). The Core i9-12900H includes integrated graphics (Iris Xe Graphics 96EU), while the Ryzen 9 5900X requires a dedicated GPU. Primary use case: Core i9-12900H targets Mobile, Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K.

Feature	Core i9-12900H	Ryzen 9 5900X
Integrated GPU	Yes	No
IGPU Model	Iris Xe Graphics 96EU	—
Unlocked	Yes	Yes
AVX-512	No	No
Virtualization	Yes	AMD-V
Target Use	Mobile	Workstation

💰

Value Analysis

At launch, the Core i9-12900H was priced at $617, while the Ryzen 9 5900X came in at $549. On launch pricing ($617 vs $549), Ryzen 9 5900X was $68 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i9-12900H delivers 43.9 pts/$ vs 71.0 pts/$ for the Ryzen 9 5900X — making the Ryzen 9 5900X the 47.1% better value option.

Feature	Core i9-12900H	Ryzen 9 5900X
MSRP	$617	$549-11%
Performance per Dollar	43.9	71.0+62%
Release Date	2022	2020

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