Core i9-12900 vs Ryzen 9 5900X

CPU

GPU

Core i9-12900

16 Cores24 Thrd65 WWMax: 5.1 GHz2022

Core family

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Ryzen 9 5900X

12 Cores24 Thrd105 WWMax: 4.8 GHz2020

Ryzen family

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Core i9-12900 vs Ryzen 9 5900X Performance Spectrum

Core i9-12900

16 / 24

33,695

0.0%

38,955

+15.6%

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 i9-12900 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 i9-12900 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 i9-12900

2022

Why buy it

✅Costs $30 less on MSRP ($519 MSRP vs $549 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 Intel UHD Graphics 770, 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 PassMark (33,695 vs 38,955).
❌Smaller total L3 cache (30 MB vs 64 MB).
❌Lower PassMark per dollar, at 64.9 vs 71.0 PassMark/$ ($519 MSRP vs $549 MSRP).

Ryzen 9 5900X

2020

Why buy it

✅Better for gaming: +13.9% higher average FPS across 50 shared CPU benchmark tests.
✅+113.3% larger total L3 cache (64 MB vs 30 MB).
✅Delivers 9.3% more PassMark for each dollar spent, at 71.0 vs 64.9 PassMark/$ ($549 MSRP vs $519 MSRP).
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌
5.8% HIGHER MSRP
$549 MSRPvs$519 MSRP
❌61.5% higher power demand at 105W vs 65W.
❌Older platform position on AM4 with DDR4, while Core i9-12900 moves to LGA1700 and DDR5.
❌No integrated graphics, while Core i9-12900 can still boot and troubleshoot without a discrete GPU.

Quick Answers

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

Yes. Ryzen 9 5900X is the better all-around CPU here. It gives you a 13.9% average FPS lead across 50 shared CPU game tests in our data and 15.6% better 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 13.9% 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 15.6% better PassMark, backed by 12 cores and 24 threads. It also has the larger cache pool with 113.3% larger total L3 cache (64 MB vs 30 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 5.8% more expensive on MSRP at $549 MSRP versus $519 MSRP, and it still gives you a 13.9% average FPS lead across 50 shared CPU game tests in our data. It is also 9.3% better value on MSRP (71.0 vs 64.9 PassMark/$), so you are getting the faster CPU without taking a value hit on paper. That said, if you already own a compatible LGA1700 + DDR5 setup, Core i9-12900 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 i9-12900 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2020) and a healthier platform with LGA1700 and DDR5 instead of AM4. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i9-12900 vs Ryzen 9 5900X Technical Specifications

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

Core i9-12900

The Core i9-12900 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 16 cores and 24 threads. Base frequency is 2.4 GHz, with boost up to 5.1 GHz. L3 cache: 30 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: DDR4, DDR5. Passmark benchmark score: 33,695 points. Launch price was $489.

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 i9-12900 packs 16 cores / 24 threads, while the Ryzen 9 5900X offers 12 cores / 24 threads — the Core i9-12900 has 4 more cores. Boost clocks reach 5.1 GHz on the Core i9-12900 versus 4.8 GHz on the Ryzen 9 5900X — a 6.1% clock advantage for the Core i9-12900 (base: 2.4 GHz vs 3.7 GHz). The Core i9-12900 uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the Core i9-12900 scores 33,695 against the Ryzen 9 5900X's 38,955 — a 14.5% lead for the Ryzen 9 5900X. L3 cache: 30 MB (total) on the Core i9-12900 vs 64 MB on the Ryzen 9 5900X.

Feature	Core i9-12900	Ryzen 9 5900X
Cores / Threads	16 / 24+33%	12 / 24
Boost Clock	5.1 GHz+6%	4.8 GHz
Base Clock	2.4 GHz	3.7 GHz+54%
L3 Cache	30 MB (total)	64 MB+113%
L2 Cache	1.25 MB (per core)	512K (per core)+40860%
Process	Intel 7 nm	7 nm, 12 nm
Architecture	Alder Lake-S (2022)	Vermeer (Zen3) (2020−2022)
PassMark	33,695	38,955+16%
Cinebench R23 Multi	—	21,000
Geekbench 6 Single	—	2,174
Geekbench 6 Multi	—	11,888

🧠

Memory & Platform

The Core i9-12900 uses the LGA1700 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 4800 on the Core i9-12900 versus DDR4-3200 on the Ryzen 9 5900X — the Core i9-12900 supports 50% 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 i9-12900) vs 24 (Ryzen 9 5900X) — the Ryzen 9 5900X offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Z690,B660 (Core i9-12900) and A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X).

Feature	Core i9-12900	Ryzen 9 5900X
Socket	LGA1700	AM4
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	4800+50%	DDR4-3200
Max RAM Capacity	128 GB	128 GB
RAM Channels	2	2
ECC Support	Yes	Yes
PCIe Lanes	20	24+20%

🔧

Advanced Features

Only the Ryzen 9 5900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x, VT-d (Core i9-12900) vs AMD-V (Ryzen 9 5900X). The Core i9-12900 includes integrated graphics (Intel UHD Graphics 770), while the Ryzen 9 5900X requires a dedicated GPU. Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Core i9-12900 rivals Ryzen 9 5900; Ryzen 9 5900X rivals Core i9-12900K.

Feature	Core i9-12900	Ryzen 9 5900X
Integrated GPU	Yes	No
IGPU Model	Intel UHD Graphics 770	—
Unlocked	No	Yes
AVX-512	No	No
Virtualization	VT-x, VT-d	AMD-V
Target Use	—	Workstation

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Value Analysis

At launch, the Core i9-12900 was priced at $519, while the Ryzen 9 5900X came in at $549. On launch pricing ($519 vs $549), Core i9-12900 was $30 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i9-12900 delivers 64.9 pts/$ vs 71.0 pts/$ for the Ryzen 9 5900X — making the Ryzen 9 5900X the 8.9% better value option.

Feature	Core i9-12900	Ryzen 9 5900X
MSRP	$519-5%	$549
Performance per Dollar	64.9	71.0+9%
Release Date	2022	2020

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