Core i9-9820X vs Ryzen 7 7735U

Core i9-9820X vs Ryzen 7 7735U Performance Spectrum

Core i9-9820X

10 / 20

20,456

0.0%

20,524

+0.3%

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 7735U 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 7735U: 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

✅100+% more PCIe lanes (44 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7735U across 50 shared CPU benchmark tests.
❌Lower PassMark (20,456 vs 20,524).
❌Launch MSRP is still $889 MSRP, while Ryzen 7 7735U mostly shows up through inconsistent older-market listings.
❌489.3% higher power demand at 165W vs 28W.
❌Older platform position on LGA2066 with DDR4, while Ryzen 7 7735U moves to FP7 and DDR5.

Ryzen 7 7735U

2023

Why buy it

✅Better for gaming: +5.0% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 28W instead of 165W, a 137W reduction.
✅Newer platform on FP7 with DDR5 support instead of LGA2066 and DDR4.

Trade-offs

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

Quick Answers

So, is Ryzen 7 7735U better than Core i9-9820X?

Yes. Ryzen 7 7735U is the better all-around CPU here. It gives you a 5.0% average FPS lead across 50 shared CPU game tests in our data, 0.3% 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 7735U is the better pick. According to our tests, it delivers 5.0% 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 7735U is the stronger fit. You are getting 0.3% better PassMark, backed by 8 cores and 16 threads.

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

Ryzen 7 7735U is still the much better call for a fresh build. Ryzen 7 7735U comes in at an unclear MSRP at unclear MSRP versus $889 MSRP, and it still gives you a 5.0% average FPS lead across 50 shared CPU game tests in our data. Core i9-9820X only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2018 platform. Even with 100.0% better value on paper (23.0 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA2066.

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

Ryzen 7 7735U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2018), a healthier platform with FP7 and DDR5 instead of LGA2066, and more multi-core headroom with 8 cores / 16 threads instead of 10/20. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i9-9820X vs Ryzen 7 7735U 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 7735U

The Ryzen 7 7735U is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Rembrandt-U Refresh (2023) architecture. It features 8 cores and 16 threads. Base frequency is 2.7 GHz, with boost up to 4.75 GHz. L3 cache: 16 MB (total). L2 cache: 512K (per core). Built on 6 nm process technology. Socket: FP7. Thermal design power (TDP): 28 Watt. Memory support: DDR5. Passmark benchmark score: 20,524 points. Launch price was $299.

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Processing Power

The Core i9-9820X packs 10 cores / 20 threads, while the Ryzen 7 7735U 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 4.75 GHz on the Ryzen 7 7735U — a 12.3% clock advantage for the Ryzen 7 7735U (base: 3.3 GHz vs 2.7 GHz). The Core i9-9820X uses the Skylake (server) (2017−2018) architecture (14 nm), while the Ryzen 7 7735U uses Rembrandt-U Refresh (2023) (6 nm). In PassMark, the Core i9-9820X scores 20,456 against the Ryzen 7 7735U's 20,524 — a 0.3% lead for the Ryzen 7 7735U. L3 cache: 16.5 MB (total) on the Core i9-9820X vs 16 MB (total) on the Ryzen 7 7735U.

Feature	Core i9-9820X	Ryzen 7 7735U
Cores / Threads	10 / 20+25%	8 / 16
Boost Clock	4.2 GHz	4.75 GHz+13%
Base Clock	3.3 GHz+22%	2.7 GHz
L3 Cache	16.5 MB (total)+3%	16 MB (total)
L2 Cache	1 MB (per core)	512K (per core)+51100%
Process	14 nm	6 nm-57%
Architecture	Skylake (server) (2017−2018)	Rembrandt-U Refresh (2023)
PassMark	20,456	20,524
Geekbench 6 Single	1,394	—
Geekbench 6 Multi	9,361	—

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Memory & Platform

The Core i9-9820X uses the LGA2066 socket (PCIe 3.0), while the Ryzen 7 7735U uses FP7 (PCIe 4.0) — making them incompatible on the same motherboard.

Feature	Core i9-9820X	Ryzen 7 7735U
Socket	LGA2066	FP7
PCIe Generation	PCIe 3.0	PCIe 4.0+33%
Max RAM Speed	DDR4 2666 MHz	—
Max RAM Capacity	128 GB	—
RAM Channels	4	—
ECC Support	No	—
PCIe Lanes	44	—