Core i9-11900 vs Ryzen 9 5900X

Core i9-11900 vs Ryzen 9 5900X Performance Spectrum

Core i9-11900

8 / 16

22,422

0.0%

38,955

+73.7%

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 i9-11900 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 i9-11900 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 i9-11900

2021

Why buy it

✅Costs $110 less on MSRP ($439 MSRP vs $549 MSRP).
✅Draws 65W instead of 105W, a 40W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
❌Lower PassMark (22,422 vs 38,955).
❌Smaller total L3 cache (16 MB vs 64 MB).
❌Lower PassMark per dollar, at 51.1 vs 71.0 PassMark/$ ($439 MSRP vs $549 MSRP).

Ryzen 9 5900X

2020

Why buy it

✅Better for gaming: +16.3% higher average FPS across 50 shared CPU benchmark tests.
✅+300% larger total L3 cache (64 MB vs 16 MB).
✅Delivers 38.9% more PassMark for each dollar spent, at 71.0 vs 51.1 PassMark/$ ($549 MSRP vs $439 MSRP).
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌
25.1% HIGHER MSRP
$549 MSRPvs$439 MSRP
❌61.5% higher power demand at 105W vs 65W.

Quick Answers

So, is Ryzen 9 5900X better than Core i9-11900?

Yes. Ryzen 9 5900X is the better all-around CPU here. It gives you a 16.3% average FPS lead across 50 shared CPU game tests in our data and 73.7% 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 16.3% 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 73.7% better PassMark, backed by 12 cores and 24 threads. It also has the larger cache pool with 300% larger total L3 cache (64 MB vs 16 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 25.1% more expensive on MSRP at $549 MSRP versus $439 MSRP, and it still gives you a 16.3% average FPS lead across 50 shared CPU game tests in our data. It is also 38.9% better value on MSRP (71.0 vs 51.1 PassMark/$), so you are getting the faster CPU without taking a value hit on paper. That said, if you already own a compatible LGA1200 + DDR4 setup, Core i9-11900 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 i9-11900 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2020). That makes it the safer long-term bet.

Core i9-11900 vs Ryzen 9 5900X Technical Specifications

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

Core i9-11900

The Core i9-11900 is manufactured by Intel. It was released in 16 March 2021 (4 years ago). It is based on the Rocket Lake (2021) architecture. It features 8 cores and 16 threads. Base frequency is 2.5 GHz, with boost up to 5.1 GHz. L3 cache: 16 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 65 Watt. Memory support: DDR4-3200. Passmark benchmark score: 22,422 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.

⚡

Processing Power

The Core i9-11900 packs 8 cores / 16 threads, while the Ryzen 9 5900X offers 12 cores / 24 threads — the Ryzen 9 5900X has 4 more cores. Boost clocks reach 5.1 GHz on the Core i9-11900 versus 4.8 GHz on the Ryzen 9 5900X — a 6.1% clock advantage for the Core i9-11900 (base: 2.5 GHz vs 3.7 GHz). The Core i9-11900 uses the Rocket Lake (2021) architecture (14 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the Core i9-11900 scores 22,422 against the Ryzen 9 5900X's 38,955 — a 53.9% lead for the Ryzen 9 5900X. L3 cache: 16 MB (total) on the Core i9-11900 vs 64 MB on the Ryzen 9 5900X.

Feature	Core i9-11900	Ryzen 9 5900X
Cores / Threads	8 / 16	12 / 24+50%
Boost Clock	5.1 GHz+6%	4.8 GHz
Base Clock	2.5 GHz	3.7 GHz+48%
L3 Cache	16 MB (total)	64 MB+300%
L2 Cache	256K (per core)	512K (per core)+100%
Process	14 nm	7 nm, 12 nm-50%
Architecture	Rocket Lake (2021)	Vermeer (Zen3) (2020−2022)
PassMark	22,422	38,955+74%
Cinebench R23 Multi	—	21,000
Geekbench 6 Single	—	2,174
Geekbench 6 Multi	—	11,888

🧠

Memory & Platform

The Core i9-11900 uses the LGA1200 socket (PCIe 3.0), while the Ryzen 9 5900X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard.

Feature	Core i9-11900	Ryzen 9 5900X
Socket	LGA1200	AM4
PCIe Generation	PCIe 3.0	PCIe 4.0+33%
Max RAM Speed	—	DDR4-3200
Max RAM Capacity	—	128 GB
RAM Channels	—	2
ECC Support	—	Yes
PCIe Lanes	—	24

🔧

Advanced Features

Virtualization: not specified (Core i9-11900) / AMD-V (Ryzen 9 5900X). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K.

Feature	Core i9-11900	Ryzen 9 5900X
Integrated GPU	—	No
Unlocked	—	Yes
AVX-512	—	No
Virtualization	—	AMD-V
Target Use	—	Workstation

💰

Value Analysis

At launch, the Core i9-11900 was priced at $439, while the Ryzen 9 5900X came in at $549. On launch pricing ($439 vs $549), Core i9-11900 was $110 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i9-11900 delivers 51.1 pts/$ vs 71.0 pts/$ for the Ryzen 9 5900X — making the Ryzen 9 5900X the 32.6% better value option.

Feature	Core i9-11900	Ryzen 9 5900X
MSRP	$439-20%	$549
Performance per Dollar	51.1	71.0+39%
Release Date	2021	2020

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