Core i5-8350U vs Ryzen 9 5900X

Core i5-8350U vs Ryzen 9 5900X Performance Spectrum

Core i5-8350U

4 / 8

6,102

0.0%

38,955

+538.4%

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 i5-8350U 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 i5-8350U 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 i5-8350U

2017

Why buy it

✅Draws 15W instead of 105W, a 90W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 34 shared CPU benchmark tests.
❌Lower PassMark (6,102 vs 38,955).
❌Smaller total L3 cache (6 MB vs 64 MB).

Ryzen 9 5900X

2020

Why buy it

✅Better for gaming: +146.6% higher average FPS across 34 shared CPU benchmark tests.
✅+966.7% larger total L3 cache (64 MB vs 6 MB).
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Launch MSRP is still $549 MSRP, while Core i5-8350U mostly shows up through inconsistent older-market listings.
❌600% higher power demand at 105W vs 15W.

Quick Answers

So, is Ryzen 9 5900X better than Core i5-8350U?

Yes. Ryzen 9 5900X is the better all-around CPU here. It gives you a 146.6% average FPS lead across 34 shared CPU game tests in our data, 538.4% 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 9 5900X is the better pick. According to our tests, it delivers 146.6% more average FPS across 34 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 538.4% better PassMark, backed by 12 cores and 24 threads. It also has the larger cache pool with 966.7% larger total L3 cache (64 MB vs 6 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 at an unclear MSRP at $549 MSRP versus unclear MSRP, and it still gives you a 146.6% average FPS lead across 34 shared CPU game tests in our data. It is also 100.0% better value on MSRP (71.0 vs 0.0 PassMark/$), 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 9 5900X makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2017), 966.7% larger total L3 cache (64 MB vs 6 MB), and more multi-core headroom with 12 cores / 24 threads instead of 4/8. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i5-8350U vs Ryzen 9 5900X Technical Specifications

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

Core i5-8350U

The Core i5-8350U is manufactured by Intel. It was released in 21 August 2017 (8 years ago). It is based on the Kaby Lake Refresh (2017−2019) architecture. It features 4 cores and 8 threads. Base frequency is 1.7 GHz, with boost up to 3.6 GHz. L3 cache: 6 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: BGA1356. Thermal design power (TDP): 15 Watt. Memory support: DDR4. Passmark benchmark score: 6,102 points. Launch price was $297.

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 i5-8350U packs 4 cores / 8 threads, while the Ryzen 9 5900X offers 12 cores / 24 threads — the Ryzen 9 5900X has 8 more cores. Boost clocks reach 3.6 GHz on the Core i5-8350U versus 4.8 GHz on the Ryzen 9 5900X — a 28.6% clock advantage for the Ryzen 9 5900X (base: 1.7 GHz vs 3.7 GHz). The Core i5-8350U uses the Kaby Lake Refresh (2017−2019) architecture (14 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the Core i5-8350U scores 6,102 against the Ryzen 9 5900X's 38,955 — a 145.8% lead for the Ryzen 9 5900X. L3 cache: 6 MB (total) on the Core i5-8350U vs 64 MB on the Ryzen 9 5900X.

Feature	Core i5-8350U	Ryzen 9 5900X
Cores / Threads	4 / 8	12 / 24+200%
Boost Clock	3.6 GHz	4.8 GHz+33%
Base Clock	1.7 GHz	3.7 GHz+118%
L3 Cache	6 MB (total)	64 MB+967%
L2 Cache	256K (per core)	512K (per core)+100%
Process	14 nm	7 nm, 12 nm-50%
Architecture	Kaby Lake Refresh (2017−2019)	Vermeer (Zen3) (2020−2022)
PassMark	6,102	38,955+538%
Cinebench R23 Multi	—	21,000
Geekbench 6 Single	—	2,174
Geekbench 6 Multi	—	11,888

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Memory & Platform

The Core i5-8350U uses the BGA1356 socket (PCIe 3.0), while the Ryzen 9 5900X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard.

Feature	Core i5-8350U	Ryzen 9 5900X
Socket	BGA1356	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

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Advanced Features

Virtualization: not specified (Core i5-8350U) / AMD-V (Ryzen 9 5900X). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K.