Core i9-9820X vs Ryzen 7 3700X

Core i9-9820X vs Ryzen 7 3700X Performance Spectrum

Core i9-9820X

10 / 20

20,456

0.0%

22,430

+9.6%

Ryzen Threadripper PRO 3955WX

Ryzen 9 9900X3D

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 i9-9820X vs Ryzen 7 3700X 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 i9-9820X vs Ryzen 7 3700X: Pros, Cons & Final Verdict

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

Core i9-9820X

2018

Why buy it

✅83.3% more PCIe lanes (44 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 3700X across 50 shared CPU benchmark tests.
❌Lower PassMark (20,456 vs 22,430).
❌Smaller total L3 cache (17 MB vs 32 MB).
❌Lower PassMark per dollar, at 23.0 vs 68.2 PassMark/$ ($889 MSRP vs $329 MSRP).
❌153.8% higher power demand at 165W vs 65W.

Ryzen 7 3700X

2019

Why buy it

✅Better for gaming: +29.4% higher average FPS across 50 shared CPU benchmark tests.
✅+93.9% larger total L3 cache (32 MB vs 17 MB).
✅Costs $560 less on MSRP ($329 MSRP vs $889 MSRP).
✅Delivers 196.3% more PassMark for each dollar spent, at 68.2 vs 23.0 PassMark/$ ($329 MSRP vs $889 MSRP).
✅Draws 65W instead of 165W, a 100W reduction.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Quick Answers

So, is Ryzen 7 3700X better than Core i9-9820X?

Yes. Ryzen 7 3700X is the better all-around CPU here. It gives you a 29.4% average FPS lead across 50 shared CPU game tests in our data, 9.6% 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 3700X is the better pick. According to our tests, it delivers 29.4% 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 3700X is the stronger fit. You are getting 9.6% better PassMark, backed by 8 cores and 16 threads. It also has the larger cache pool with 93.9% larger total L3 cache (32 MB vs 17 MB).

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

Ryzen 7 3700X is the better buy right now. Ryzen 7 3700X comes in $560 cheaper on MSRP at $329 MSRP versus $889 MSRP, and it still gives you a 29.4% average FPS lead across 50 shared CPU game tests in our data. It is also 196.3% better value on MSRP (68.2 vs 23.0 PassMark/$), 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 7 3700X makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2019 vs 2018), 93.9% larger total L3 cache (32 MB vs 17 MB), and more multi-core headroom with 8 cores / 16 threads instead of 10/20. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i9-9820X vs Ryzen 7 3700X Technical Specifications

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

Core i9-9820X

The Core i9-9820X 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 10 cores and 20 threads. Base frequency is 3.3 GHz, with boost up to 4.2 GHz. L3 cache: 16.5 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: 20,456 points. Launch price was $898.

Ryzen 7 3700X

The Ryzen 7 3700X is manufactured by AMD. It was released in 7 July 2019 (6 years ago). It is based on the Matisse (Zen 2) (2019−2020) architecture. It features 8 cores and 16 threads. Base frequency is 3.6 GHz, with boost up to 4.4 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 Dual-channel. Passmark benchmark score: 22,430 points. Launch price was $329.

⚡

Processing Power

The Core i9-9820X packs 10 cores / 20 threads, while the Ryzen 7 3700X offers 8 cores / 16 threads — the Core i9-9820X has 2 more cores. Boost clocks reach 4.2 GHz on the Core i9-9820X versus 4.4 GHz on the Ryzen 7 3700X — a 4.7% clock advantage for the Ryzen 7 3700X (base: 3.3 GHz vs 3.6 GHz). The Core i9-9820X uses the Skylake (server) (2017−2018) architecture (14 nm), while the Ryzen 7 3700X uses Matisse (Zen 2) (2019−2020) (7 nm, 12 nm). In PassMark, the Core i9-9820X scores 20,456 against the Ryzen 7 3700X's 22,430 — a 9.2% lead for the Ryzen 7 3700X. L3 cache: 16.5 MB (total) on the Core i9-9820X vs 32 MB on the Ryzen 7 3700X.

Feature	Core i9-9820X	Ryzen 7 3700X
Cores / Threads	10 / 20+25%	8 / 16
Boost Clock	4.2 GHz	4.4 GHz+5%
Base Clock	3.3 GHz	3.6 GHz+9%
L3 Cache	16.5 MB (total)	32 MB+94%
L2 Cache	1 MB (per core)	512K (per core)+51100%
Process	14 nm	7 nm, 12 nm-50%
Architecture	Skylake (server) (2017−2018)	Matisse (Zen 2) (2019−2020)
PassMark	20,456	22,430+10%
Geekbench 6 Single	1,394	—
Geekbench 6 Multi	9,361	—

🧠

Memory & Platform

The Core i9-9820X uses the LGA2066 socket (PCIe 3.0), while the Ryzen 7 3700X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4 2666 MHz on the Core i9-9820X versus DDR4-3200 on the Ryzen 7 3700X — the Ryzen 7 3700X supports 20% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 128 GB of RAM. Memory channels: 4 (Core i9-9820X) vs 2 (Ryzen 7 3700X). PCIe lanes: 44 (Core i9-9820X) vs 24 (Ryzen 7 3700X) — the Core i9-9820X offers 20 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel X299 (Core i9-9820X) and AMD 500 series,AMD 400 series,AMD 300 series (Ryzen 7 3700X).

Feature	Core i9-9820X	Ryzen 7 3700X
Socket	LGA2066	AM4
PCIe Generation	PCIe 3.0	PCIe 4.0+33%
Max RAM Speed	DDR4 2666 MHz	DDR4-3200+20%
Max RAM Capacity	128 GB	128 GB
RAM Channels	4+100%	2
ECC Support	No	Yes
PCIe Lanes	44+83%	24

🔧

Advanced Features

Virtualization: true (Core i9-9820X) / not specified (Ryzen 7 3700X). Primary use case: Core i9-9820X targets Workstation.

Feature	Core i9-9820X	Ryzen 7 3700X
Integrated GPU	No	No
Unlocked	Yes	—
AVX-512	Yes	—
Virtualization	true	—
Target Use	Workstation	—

💰

Value Analysis

At launch, the Core i9-9820X was priced at $889, while the Ryzen 7 3700X came in at $329. On launch pricing ($889 vs $329), Ryzen 7 3700X was $560 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i9-9820X delivers 23.0 pts/$ vs 68.2 pts/$ for the Ryzen 7 3700X — making the Ryzen 7 3700X the 99.1% better value option.

Feature	Core i9-9820X	Ryzen 7 3700X
MSRP	$889	$329-63%
Performance per Dollar	23.0	68.2+197%
Release Date	2018	2019

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