Ryzen 7 3700X vs Ryzen 9 3900X

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 9 3900X 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 9 3900X: 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

✅Costs $170 less on MSRP ($329 MSRP vs $499 MSRP).
✅Draws 65W instead of 105W, a 40W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 3900X across 50 shared CPU benchmark tests.
❌Lower PassMark (22,430 vs 32,517).
❌Smaller total L3 cache (32 MB vs 64 MB).
❌No boxed cooler included, unlike Ryzen 9 3900X.

Ryzen 9 3900X

2019

Why buy it

✅Better for gaming: +16.6% higher average FPS across 50 shared CPU benchmark tests.
✅+100% larger total L3 cache (64 MB vs 32 MB).
✅Includes a boxed cooler (Wraith Prism), unlike Ryzen 7 3700X.

Trade-offs

❌
51.7% HIGHER MSRP
$499 MSRPvs$329 MSRP
❌61.5% higher power demand at 105W vs 65W.

Quick Answers

So, is Ryzen 9 3900X better than Ryzen 7 3700X?

Yes. Ryzen 9 3900X is the better all-around CPU here. It gives you a 16.6% average FPS lead across 50 shared CPU game tests in our data, 45% 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 3900X is the better pick. According to our tests, it delivers 16.6% 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 9 3900X is the stronger fit. You are getting 45% better PassMark, backed by 12 cores and 24 threads. It also has the larger cache pool with 100% larger total L3 cache (64 MB vs 32 MB).

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

Ryzen 9 3900X is still the faster CPU overall, but Ryzen 7 3700X is easier to justify if budget matters more than peak performance. Ryzen 9 3900X comes in 51.7% more expensive on MSRP at $499 MSRP versus $329 MSRP, and it still gives you a 16.6% average FPS lead across 50 shared CPU game tests in our data. Ryzen 7 3700X is also 4.6% better value on MSRP (68.2 vs 65.2 PassMark/$), 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 9 3900X makes more sense long term for 2026 and beyond. You are getting 100% larger total L3 cache (64 MB vs 32 MB) and more multi-core headroom with 12 cores / 24 threads instead of 8/16. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Ryzen 7 3700X vs Ryzen 9 3900X 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 9 3900X

The Ryzen 9 3900X 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 12 cores and 24 threads. Base frequency is 3.8 GHz, with boost up to 4.6 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 125 Watt. Memory support: DDR4 Dual-channel. Passmark benchmark score: 32,517 points. Launch price was $499.

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Processing Power

The Ryzen 7 3700X packs 8 cores / 16 threads, while the Ryzen 9 3900X offers 12 cores / 24 threads — the Ryzen 9 3900X has 4 more cores. Boost clocks reach 4.4 GHz on the Ryzen 7 3700X versus 4.6 GHz on the Ryzen 9 3900X — a 4.4% clock advantage for the Ryzen 9 3900X (base: 3.6 GHz vs 3.8 GHz). Both are built on the Matisse (Zen 2) (2019−2020) architecture using a 7 nm, 12 nm process. In PassMark, the Ryzen 7 3700X scores 22,430 against the Ryzen 9 3900X's 32,517 — a 36.7% lead for the Ryzen 9 3900X. L3 cache: 32 MB on the Ryzen 7 3700X vs 64 MB on the Ryzen 9 3900X.

Feature	Ryzen 7 3700X	Ryzen 9 3900X
Cores / Threads	8 / 16	12 / 24+50%
Boost Clock	4.4 GHz	4.6 GHz+5%
Base Clock	3.6 GHz	3.8 GHz+6%
L3 Cache	32 MB	64 MB+100%
L2 Cache	512K (per core)	512K (per core)
Process	7 nm, 12 nm	7 nm, 12 nm
Architecture	Matisse (Zen 2) (2019−2020)	Matisse (Zen 2) (2019−2020)
PassMark	22,430	32,517+45%
Geekbench 6 Single	—	1,300
Geekbench 6 Multi	—	12,000

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Memory & Platform

Both processors use the AM4 socket with PCIe 4.0. Both support up to DDR4-3200 memory speed. Both support up to 128 GB of RAM. Both feature 2-channel memory with ECC support. Both provide 24 PCIe lanes. Chipset compatibility: AMD 500 series,AMD 400 series,AMD 300 series (Ryzen 7 3700X) and X570,B550 (Ryzen 9 3900X).

Feature	Ryzen 7 3700X	Ryzen 9 3900X
Socket	AM4	AM4
PCIe Generation	PCIe 4.0	PCIe 4.0
Max RAM Speed	DDR4-3200	DDR4-3200
Max RAM Capacity	128 GB	128 GB
RAM Channels	2	2
ECC Support	Yes	Yes
PCIe Lanes	24	24

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Advanced Features

Virtualization: not specified (Ryzen 7 3700X) / AMD-V (Ryzen 9 3900X). Primary use case: Ryzen 9 3900X targets Workstation.

Feature	Ryzen 7 3700X	Ryzen 9 3900X
Integrated GPU	No	No
IGPU Model	—	None
Unlocked	—	Yes
AVX-512	—	No
Virtualization	—	AMD-V
Target Use	—	Workstation

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Value Analysis

At launch, the Ryzen 7 3700X was priced at $329, while the Ryzen 9 3900X came in at $499. On launch pricing ($329 vs $499), Ryzen 7 3700X was $170 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 7 3700X delivers 68.2 pts/$ vs 65.2 pts/$ for the Ryzen 9 3900X — making the Ryzen 7 3700X the 4.5% better value option.

Feature	Ryzen 7 3700X	Ryzen 9 3900X
MSRP	$329-34%	$499
Performance per Dollar	68.2+5%	65.2
Release Date	2019	2019

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