Core i9-11900 vs Ryzen 7 5800X

Core i9-11900 vs Ryzen 7 5800X Performance Spectrum

Core i9-11900

8 / 16

22,422

0.0%

27,712

+23.6%

Ryzen Threadripper 3990X

Ryzen Threadripper PRO 9965WX

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 7 5800X 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 7 5800X: 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 $10 less on MSRP ($439 MSRP vs $449 MSRP).
✅Draws 65W instead of 105W, a 40W reduction.

Trade-offs

❌Lower PassMark (22,422 vs 27,712).
❌Smaller total L3 cache (16 MB vs 32 MB).
❌Lower PassMark per dollar, at 51.1 vs 61.7 PassMark/$ ($439 MSRP vs $449 MSRP).

Ryzen 7 5800X

2020

Why buy it

✅+23.6% higher PassMark.
✅+100% larger total L3 cache (32 MB vs 16 MB).
✅Delivers 20.8% more PassMark for each dollar spent, at 61.7 vs 51.1 PassMark/$ ($449 MSRP vs $439 MSRP).
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌
2.3% HIGHER MSRP
$449 MSRPvs$439 MSRP
❌61.5% higher power demand at 105W vs 65W.

Quick Answers

So, is Core i9-11900 better than Ryzen 7 5800X?

It depends on what you want from the system. For gaming, Core i9-11900 is ahead with a 0.2% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Ryzen 7 5800X pulls ahead with 23.6% better PassMark. Ryzen 7 5800X also has the bigger cache pool with 100% larger total L3 cache (32 MB vs 16 MB).

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

For streaming, content creation, and heavier multitasking, Ryzen 7 5800X is the stronger fit. You are getting 23.6% better PassMark, backed by 8 cores and 16 threads. It also has the larger cache pool with 100% larger total L3 cache (32 MB vs 16 MB).

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

Core i9-11900 is still the faster CPU overall, but Ryzen 7 5800X is easier to justify if budget matters more than peak performance. Core i9-11900 comes in $10 cheaper on MSRP at $439 MSRP versus $449 MSRP, and it still gives you a 0.2% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Ryzen 7 5800X is still stronger for heavier multi-core work with 23.6% better PassMark. Ryzen 7 5800X is also 20.8% better value on MSRP (61.7 vs 51.1 PassMark/$), which is why it can still make sense for tighter-budget builds on paper. That said, if you already own a compatible AM4 + DDR4 setup, Ryzen 7 5800X 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 7 5800X 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 7 5800X

The Ryzen 7 5800X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen 3) (2020−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 4.7 GHz. L3 cache: 32 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. Passmark benchmark score: 27,712 points. Launch price was $449.

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Processing Power

Both the Core i9-11900 and Ryzen 7 5800X share an identical 8-core/16-thread configuration. Boost clocks reach 5.1 GHz on the Core i9-11900 versus 4.7 GHz on the Ryzen 7 5800X — a 8.2% clock advantage for the Core i9-11900 (base: 2.5 GHz vs 3.8 GHz). The Core i9-11900 uses the Rocket Lake (2021) architecture (14 nm), while the Ryzen 7 5800X uses Vermeer (Zen 3) (2020−2022) (7 nm, 12 nm). In PassMark, the Core i9-11900 scores 22,422 against the Ryzen 7 5800X's 27,712 — a 21.1% lead for the Ryzen 7 5800X. L3 cache: 16 MB (total) on the Core i9-11900 vs 32 MB on the Ryzen 7 5800X.

Feature	Core i9-11900	Ryzen 7 5800X
Cores / Threads	8 / 16	8 / 16
Boost Clock	5.1 GHz+9%	4.7 GHz
Base Clock	2.5 GHz	3.8 GHz+52%
L3 Cache	16 MB (total)	32 MB+100%
L2 Cache	256K (per core)	512K (per core)+100%
Process	14 nm	7 nm, 12 nm-50%
Architecture	Rocket Lake (2021)	Vermeer (Zen 3) (2020−2022)
PassMark	22,422	27,712+24%

🧠

Memory & Platform

The Core i9-11900 uses the LGA1200 socket (PCIe 3.0), while the Ryzen 7 5800X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard.

Feature	Core i9-11900	Ryzen 7 5800X
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 7 5800X). Primary use case: Ryzen 7 5800X targets Desktop.

Feature	Core i9-11900	Ryzen 7 5800X
Integrated GPU	—	No
Unlocked	—	Yes
AVX-512	—	No
Virtualization	—	AMD-V
Target Use	—	Desktop

💰

Value Analysis

At launch, the Core i9-11900 was priced at $439, while the Ryzen 7 5800X came in at $449. On launch pricing ($439 vs $449), Core i9-11900 was $10 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i9-11900 delivers 51.1 pts/$ vs 61.7 pts/$ for the Ryzen 7 5800X — making the Ryzen 7 5800X the 18.9% better value option.

Feature	Core i9-11900	Ryzen 7 5800X
MSRP	$439-2%	$449
Performance per Dollar	51.1	61.7+21%
Release Date	2021	2020

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