Ryzen 7 3700X vs Ryzen 7 7840U

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.

Ryzen 7 3700X vs Ryzen 7 7840U 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.

Ryzen 7 3700X vs Ryzen 7 7840U: Pros, Cons & Final Verdict

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

Ryzen 7 3700X

2019

Why buy it

✅+100% larger total L3 cache (32 MB vs 16 MB).
✅Costs $71 less on MSRP ($329 MSRP vs $400 MSRP).
✅Delivers 11.1% more PassMark for each dollar spent, at 68.2 vs 61.4 PassMark/$ ($329 MSRP vs $400 MSRP).
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7840U across 50 shared CPU benchmark tests.
❌Lower PassMark (22,430 vs 24,547).
❌132.1% higher power demand at 65W vs 28W.
❌Older platform position on AM4 with DDR4, while Ryzen 7 7840U moves to FP8 and DDR5.

Ryzen 7 7840U

2023

Why buy it

✅Better for gaming: +3.4% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 28W instead of 65W, a 37W reduction.
✅Newer platform on FP8 with DDR5 support instead of AM4 and DDR4.

Trade-offs

❌Smaller total L3 cache (16 MB vs 32 MB).
❌Lower PassMark per dollar, at 61.4 vs 68.2 PassMark/$ ($400 MSRP vs $329 MSRP).

Quick Answers

So, is Ryzen 7 7840U better than Ryzen 7 3700X?

Yes. Ryzen 7 7840U is the better all-around CPU here. It gives you a 3.4% average FPS lead across 50 shared CPU game tests in our data, 9.4% 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 7 7840U is the better pick. According to our tests, it delivers 3.4% 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 7840U is the stronger fit. You are getting 9.4% better PassMark, backed by 8 cores and 16 threads.

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

Ryzen 7 7840U is still the faster CPU overall, but Ryzen 7 3700X is easier to justify if budget matters more than peak performance. Ryzen 7 7840U comes in 21.6% more expensive on MSRP at $400 MSRP versus $329 MSRP, and it still gives you a 3.4% average FPS lead across 50 shared CPU game tests in our data. Ryzen 7 3700X is also 11.1% better value on MSRP (68.2 vs 61.4 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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

Ryzen 7 7840U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2019), a healthier platform with FP8 and DDR5 instead of AM4, and more multi-core headroom with 8 cores / 16 threads instead of 8/16. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Ryzen 7 3700X vs Ryzen 7 7840U Technical Specifications

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

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.

Ryzen 7 7840U

The Ryzen 7 7840U is manufactured by AMD. It was released in Maio 2023 (2 years ago). It is based on the Phoenix-U (Zen 4) (2023) architecture. It features 8 cores and 16 threads. Base frequency is 3.3 GHz, with boost up to 5.1 GHz. L3 cache: 16 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FP8. Thermal design power (TDP): 28 Watt. Memory support: DDR5-5600. Passmark benchmark score: 24,547 points. Launch price was $299.

⚡

Processing Power

Both the Ryzen 7 3700X and Ryzen 7 7840U share an identical 8-core/16-thread configuration. Boost clocks reach 4.4 GHz on the Ryzen 7 3700X versus 5.1 GHz on the Ryzen 7 7840U — a 14.7% clock advantage for the Ryzen 7 7840U (base: 3.6 GHz vs 3.3 GHz). The Ryzen 7 3700X uses the Matisse (Zen 2) (2019−2020) architecture (7 nm, 12 nm), while the Ryzen 7 7840U uses Phoenix-U (Zen 4) (2023) (4 nm). In PassMark, the Ryzen 7 3700X scores 22,430 against the Ryzen 7 7840U's 24,547 — a 9% lead for the Ryzen 7 7840U. L3 cache: 32 MB on the Ryzen 7 3700X vs 16 MB (total) on the Ryzen 7 7840U.

Feature	Ryzen 7 3700X	Ryzen 7 7840U
Cores / Threads	8 / 16	8 / 16
Boost Clock	4.4 GHz	5.1 GHz+16%
Base Clock	3.6 GHz+9%	3.3 GHz
L3 Cache	32 MB+100%	16 MB (total)
L2 Cache	512K (per core)+51100%	1 MB (per core)
Process	7 nm, 12 nm	4 nm-43%
Architecture	Matisse (Zen 2) (2019−2020)	Phoenix-U (Zen 4) (2023)
PassMark	22,430	24,547+9%

🧠

Memory & Platform

The Ryzen 7 3700X uses the AM4 socket (PCIe 4.0), while the Ryzen 7 7840U uses FP8 (PCIe 4.0) — making them incompatible on the same motherboard.

Feature	Ryzen 7 3700X	Ryzen 7 7840U
Socket	AM4	FP8
PCIe Generation	PCIe 4.0	PCIe 4.0
Max RAM Speed	DDR4-3200	—
Max RAM Capacity	128 GB	—
RAM Channels	2	—
ECC Support	Yes	—
PCIe Lanes	24	—

💰

Value Analysis

At launch, the Ryzen 7 3700X was priced at $329, while the Ryzen 7 7840U came in at $400. On launch pricing ($329 vs $400), Ryzen 7 3700X was $71 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 7 3700X delivers 68.2 pts/$ vs 61.4 pts/$ for the Ryzen 7 7840U — making the Ryzen 7 3700X the 10.5% better value option.

Feature	Ryzen 7 3700X	Ryzen 7 7840U
MSRP	$329-18%	$400
Performance per Dollar	68.2+11%	61.4
Release Date	2019	2023

Search Ryzen 7 3700X on Amazon

Search Ryzen 7 7840U 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.