Core i9-9920X vs Ryzen 5 5600X

Core i9-9920X vs Ryzen 5 5600X Performance Spectrum

Core i9-9920X

12 / 24

24,974

+14.3%

21,845

0.0%

Ryzen Threadripper PRO 5975WX

Ryzen Threadripper 9960X

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 i9-9920X vs Ryzen 5 5600X 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 i9-9920X vs Ryzen 5 5600X: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Core i9-9920X

2018

Why buy it

✅+14.3% higher PassMark.

Trade-offs

❌Smaller total L3 cache (19 MB vs 32 MB).
❌Lower PassMark per dollar, at 21.0 vs 73.1 PassMark/$ ($1,189 MSRP vs $299 MSRP).
❌153.8% higher power demand at 165W vs 65W.

Ryzen 5 5600X

2020

Why buy it

✅+66.2% larger total L3 cache (32 MB vs 19 MB).
✅Costs $890 less on MSRP ($299 MSRP vs $1,189 MSRP).
✅Delivers 247.8% more PassMark for each dollar spent, at 73.1 vs 21.0 PassMark/$ ($299 MSRP vs $1,189 MSRP).
✅Draws 65W instead of 165W, a 100W reduction.
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (21,845 vs 24,974).

Quick Answers

So, is Ryzen 5 5600X better than Core i9-9920X?

It depends on what you want from the system. For gaming, Ryzen 5 5600X is ahead with a 0.3% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i9-9920X pulls ahead with 14.3% better PassMark. Ryzen 5 5600X also has the bigger cache pool with 66.2% larger total L3 cache (32 MB vs 19 MB).

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

For streaming, content creation, and heavier multitasking, Core i9-9920X is the stronger fit. You are getting 14.3% better PassMark, backed by 12 cores and 24 threads.

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

Ryzen 5 5600X is the better buy right now. Ryzen 5 5600X comes in $890 cheaper on MSRP at $299 MSRP versus $1,189 MSRP, and it still gives you a 0.3% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Core i9-9920X is still stronger for heavier multi-core work with 14.3% better PassMark. It is also 247.8% better value on MSRP (73.1 vs 21.0 PassMark/$), 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 5 5600X makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2018) and 66.2% larger total L3 cache (32 MB vs 19 MB). That makes it the safer long-term bet.

Core i9-9920X vs Ryzen 5 5600X Technical Specifications

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

Core i9-9920X

The Core i9-9920X is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 12 cores and 24 threads. Base frequency is 3.5 GHz, with boost up to 4.5 GHz. L3 cache: 19.25 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 165 Watt. Memory support: DDR4-2666. Passmark benchmark score: 24,974 points. Launch price was $1,189.

Ryzen 5 5600X

The Ryzen 5 5600X 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 6 cores and 12 threads. Base frequency is 3.7 GHz, with boost up to 4.6 GHz. L3 cache: 32 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 21,845 points. Launch price was $299.

⚡

Processing Power

The Core i9-9920X packs 12 cores / 24 threads, while the Ryzen 5 5600X offers 6 cores / 12 threads — the Core i9-9920X has 6 more cores. Boost clocks reach 4.5 GHz on the Core i9-9920X versus 4.6 GHz on the Ryzen 5 5600X — a 2.2% clock advantage for the Ryzen 5 5600X (base: 3.5 GHz vs 3.7 GHz). The Core i9-9920X uses the Skylake (server) (2017−2018) architecture (14 nm), while the Ryzen 5 5600X uses Vermeer (Zen 3) (2020−2022) (7 nm, 12 nm). In PassMark, the Core i9-9920X scores 24,974 against the Ryzen 5 5600X's 21,845 — a 13.4% lead for the Core i9-9920X. L3 cache: 19.25 MB (total) on the Core i9-9920X vs 32 MB on the Ryzen 5 5600X.

Feature	Core i9-9920X	Ryzen 5 5600X
Cores / Threads	12 / 24+100%	6 / 12
Boost Clock	4.5 GHz	4.6 GHz+2%
Base Clock	3.5 GHz	3.7 GHz+6%
L3 Cache	19.25 MB (total)	32 MB+66%
L2 Cache	1 MB (per core)	512K (per core)+51100%
Process	14 nm	7 nm, 12 nm-50%
Architecture	Skylake (server) (2017−2018)	Vermeer (Zen 3) (2020−2022)
PassMark	24,974+14%	21,845

🧠

Memory & Platform

The Core i9-9920X uses the LGA2066 socket (PCIe 3.0), while the Ryzen 5 5600X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard.

Feature	Core i9-9920X	Ryzen 5 5600X
Socket	LGA2066	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 i9-9920X) / AMD-V (Ryzen 5 5600X). Primary use case: Ryzen 5 5600X targets Desktop.

Feature	Core i9-9920X	Ryzen 5 5600X
Integrated GPU	—	No
Unlocked	—	Yes
AVX-512	—	No
Virtualization	—	AMD-V
Target Use	—	Desktop

💰

Value Analysis

At launch, the Core i9-9920X was priced at $1189, while the Ryzen 5 5600X came in at $299. On launch pricing ($1189 vs $299), Ryzen 5 5600X was $890 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i9-9920X delivers 21.0 pts/$ vs 73.1 pts/$ for the Ryzen 5 5600X — making the Ryzen 5 5600X the 110.7% better value option.

Feature	Core i9-9920X	Ryzen 5 5600X
MSRP	$1189	$299-75%
Performance per Dollar	21.0	73.1+248%
Release Date	2018	2020

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