Core i9-9900 vs Ryzen 7 5800X

CPU

GPU

Core i9-9900

8 Cores16 Thrd65 WWMax: 5 GHz2019

Similar parts

·······

Buy on Amazon

Ryzen 7 5800X

8 Cores16 Thrd105 WWMax: 4.7 GHz2020

Ryzen family

·······

Buy on Amazon

Core i9-9900 vs Ryzen 7 5800X Performance Spectrum

Core i9-9900

8 / 16

16,238

0.0%

27,712

+70.7%

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 i9-9900 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 i9-9900 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 i9-9900

2019

Why buy it

✅Costs $26 less on MSRP ($423 MSRP vs $449 MSRP).
✅Draws 65W instead of 105W, a 40W reduction.
✅Integrated graphics onboard with UHD Graphics 630, while Ryzen 7 5800X needs a discrete GPU.
✅Includes a boxed cooler (Yes), unlike Ryzen 7 5800X.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 5800X across 50 shared CPU benchmark tests.
❌Lower PassMark (16,238 vs 27,712).
❌Smaller total L3 cache (16 MB vs 32 MB).
❌Lower PassMark per dollar, at 38.4 vs 61.7 PassMark/$ ($423 MSRP vs $449 MSRP).

Ryzen 7 5800X

2020

Why buy it

✅Better for gaming: +4.8% higher average FPS across 50 shared CPU benchmark tests.
✅+100% larger total L3 cache (32 MB vs 16 MB).
✅Delivers 60.8% more PassMark for each dollar spent, at 61.7 vs 38.4 PassMark/$ ($449 MSRP vs $423 MSRP).
✅50% more PCIe lanes (24 vs 16) for storage and expansion-heavy builds.

Trade-offs

❌
6.1% HIGHER MSRP
$449 MSRPvs$423 MSRP
❌61.5% higher power demand at 105W vs 65W.
❌No integrated graphics, while Core i9-9900 can still boot and troubleshoot without a discrete GPU.
❌No boxed cooler included, unlike Core i9-9900.

Quick Answers

So, is Ryzen 7 5800X better than Core i9-9900?

Yes. Ryzen 7 5800X is the better all-around CPU here. It gives you a 4.8% average FPS lead across 50 shared CPU game tests in our data, 70.7% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Ryzen 7 5800X is the better pick. According to our tests, it delivers 4.8% 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 7 5800X is the stronger fit. You are getting 70.7% 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?

Ryzen 7 5800X is the better buy right now. Ryzen 7 5800X comes in 6.1% more expensive on MSRP at $449 MSRP versus $423 MSRP, and it still gives you a 4.8% average FPS lead across 50 shared CPU game tests in our data. It is also 60.8% better value on MSRP (61.7 vs 38.4 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

Which one is more future-proof for 2026 and beyond?

Ryzen 7 5800X makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2019), 100% larger total L3 cache (32 MB vs 16 MB), and more multi-core headroom with 8 cores / 16 threads instead of 8/16. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i9-9900 vs Ryzen 7 5800X Technical Specifications

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

Core i9-9900

The Core i9-9900 is manufactured by Intel. It was released in 23 April 2019 (6 years ago). It is based on the Coffee Lake-R (2018−2019) architecture. It features 8 cores and 16 threads. Base frequency is 3.1 GHz, with boost up to 5 GHz. L3 cache: 16 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 65 Watt. Memory support: DDR4-2666. Passmark benchmark score: 16,238 points. Launch price was $439.

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.

⚡

Processing Power

Both the Core i9-9900 and Ryzen 7 5800X share an identical 8-core/16-thread configuration. Boost clocks reach 5 GHz on the Core i9-9900 versus 4.7 GHz on the Ryzen 7 5800X — a 6.2% clock advantage for the Core i9-9900 (base: 3.1 GHz vs 3.8 GHz). The Core i9-9900 uses the Coffee Lake-R (2018−2019) architecture (14 nm), while the Ryzen 7 5800X uses Vermeer (Zen 3) (2020−2022) (7 nm, 12 nm). In PassMark, the Core i9-9900 scores 16,238 against the Ryzen 7 5800X's 27,712 — a 52.2% lead for the Ryzen 7 5800X. L3 cache: 16 MB (total) on the Core i9-9900 vs 32 MB on the Ryzen 7 5800X.

Feature	Core i9-9900	Ryzen 7 5800X
Cores / Threads	8 / 16	8 / 16
Boost Clock	5 GHz+6%	4.7 GHz
Base Clock	3.1 GHz	3.8 GHz+23%
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	Coffee Lake-R (2018−2019)	Vermeer (Zen 3) (2020−2022)
PassMark	16,238	27,712+71%
Cinebench R23 Multi	7,619	—
Geekbench 6 Single	1,637	—
Geekbench 6 Multi	7,619	—

🧠

Memory & Platform

The Core i9-9900 uses the LGA1151 socket (PCIe 3.0), while the Ryzen 7 5800X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Core i9-9900 versus DDR4-3200 on the Ryzen 7 5800X — the Ryzen 7 5800X supports 20% 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: 16 (Core i9-9900) vs 24 (Ryzen 7 5800X) — the Ryzen 7 5800X offers 8 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Z390,B365 (Core i9-9900) and AMD 500 series,AMD 400 series,AMD 300 series (Ryzen 7 5800X).

Feature	Core i9-9900	Ryzen 7 5800X
Socket	LGA1151	AM4
PCIe Generation	PCIe 3.0	PCIe 4.0+33%
Max RAM Speed	DDR4-2666	DDR4-3200+20%
Max RAM Capacity	128 GB	128 GB
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	16	24+50%

🔧

Advanced Features

Only the Ryzen 7 5800X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x, VT-d (Core i9-9900) vs AMD-V (Ryzen 7 5800X). The Core i9-9900 includes integrated graphics (UHD Graphics 630), while the Ryzen 7 5800X requires a dedicated GPU. Primary use case: Ryzen 7 5800X targets Desktop.

Feature	Core i9-9900	Ryzen 7 5800X
Integrated GPU	Yes	No
IGPU Model	UHD Graphics 630	—
Unlocked	No	Yes
AVX-512	No	No
Virtualization	VT-x, VT-d	AMD-V
Target Use	—	Desktop

💰

Value Analysis

At launch, the Core i9-9900 was priced at $423, while the Ryzen 7 5800X came in at $449. On launch pricing ($423 vs $449), Core i9-9900 was $26 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i9-9900 delivers 38.4 pts/$ vs 61.7 pts/$ for the Ryzen 7 5800X — making the Ryzen 7 5800X the 46.6% better value option.

Feature	Core i9-9900	Ryzen 7 5800X
MSRP	$423-6%	$449
Performance per Dollar	38.4	61.7+61%
Release Date	2019	2020

Search Core i9-9900 on Amazon

Search Ryzen 7 5800X on Amazon

Affiliate Disclosure

ChipVERSUS is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. We may earn a commission on qualifying purchases made through our links. This comes at no additional cost to you and helps support our work in providing comprehensive PC building guides and tools.

Amazon and the Amazon logo are trademarks of Amazon.com, Inc. or its affiliates.