Ryzen 7 5700X vs Ryzen 9 3900

CPU

GPU

Ryzen 7 5700X

8 Cores16 Thrd65 WWMax: 4.6 GHz2022

Ryzen family

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Ryzen 9 3900

12 Cores24 Thrd65 WWMax: 4.3 GHz2019

Ryzen family

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Ryzen 7 5700X vs Ryzen 9 3900 Performance Spectrum

Ryzen 7 5700X

8 / 16

26,609

0.0%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Ryzen Threadripper 9960X

Ryzen 9 3900

12 / 24

30,588

+15.0%

Ryzen Threadripper 3970X

Ryzen Threadripper 3990X

Ryzen Threadripper PRO 5995WX

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.

Ryzen 7 5700X vs Ryzen 9 3900 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 5700X vs Ryzen 9 3900: 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 5700X

2022

Why buy it

✅Better for gaming: +14.0% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $200 less on MSRP ($299 MSRP vs $499 MSRP).
✅Delivers 45.2% more PassMark for each dollar spent, at 89.0 vs 61.3 PassMark/$ ($299 MSRP vs $499 MSRP).

Trade-offs

❌Lower Cinebench R23 multi-core (14,000 vs 17,700).
❌Smaller total L3 cache (32 MB vs 64 MB).
❌No boxed cooler included, unlike Ryzen 9 3900.

Ryzen 9 3900

2019

Why buy it

✅+26.4% higher Cinebench R23 multi-core.
✅+100% larger total L3 cache (64 MB vs 32 MB).
✅Includes a boxed cooler (Wraith Prism), unlike Ryzen 7 5700X.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 5700X across 50 shared CPU benchmark tests.
❌Lower PassMark per dollar, at 61.3 vs 89.0 PassMark/$ ($499 MSRP vs $299 MSRP).

Quick Answers

So, is Ryzen 7 5700X better than Ryzen 9 3900?

It depends on what you want from the system. For gaming, Ryzen 7 5700X is ahead with a 14.0% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Ryzen 9 3900 pulls ahead with 26.4% better Cinebench R23 multi-core. Ryzen 9 3900 also has the bigger cache pool with 100% larger total L3 cache (64 MB vs 32 MB).

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

For streaming, content creation, and heavier multitasking, Ryzen 9 3900 is the stronger fit. You are getting 26.4% better Cinebench R23 multi-core, 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 7 5700X is the better buy right now. Ryzen 7 5700X comes in $200 cheaper on MSRP at $299 MSRP versus $499 MSRP, and it still gives you a 14.0% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Ryzen 9 3900 is still stronger for heavier multi-core work with 26.4% better Cinebench R23 multi-core. It is also 45.2% better value on MSRP (89.0 vs 61.3 PassMark/$), 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 5700X makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2019). That makes it the safer long-term bet.

Ryzen 7 5700X vs Ryzen 9 3900 Technical Specifications

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

Ryzen 7 5700X

The Ryzen 7 5700X is manufactured by AMD. It was released in 4 April 2022 (3 years ago). It is based on the Vermeer (Zen 3) (2020−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.4 GHz, with boost up to 4.6 GHz. L3 cache: 32 MB (total). L2 cache: 512K (per core). Built on 7 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4-3200. Passmark benchmark score: 26,609 points. Launch price was $299.

Ryzen 9 3900

The Ryzen 9 3900 is manufactured by AMD. It was released in 24 September 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 3.1 GHz, with boost up to 4.3 GHz. L3 cache: 64 MB. L2 cache: 512 kB (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4-3200. Passmark benchmark score: 30,588 points. Launch price was $499.

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Processing Power

The Ryzen 7 5700X packs 8 cores / 16 threads, while the Ryzen 9 3900 offers 12 cores / 24 threads — the Ryzen 9 3900 has 4 more cores. Boost clocks reach 4.6 GHz on the Ryzen 7 5700X versus 4.3 GHz on the Ryzen 9 3900 — a 6.7% clock advantage for the Ryzen 7 5700X (base: 3.4 GHz vs 3.1 GHz). The Ryzen 7 5700X uses the Vermeer (Zen 3) (2020−2022) architecture (7 nm), while the Ryzen 9 3900 uses Matisse (Zen 2) (2019−2020) (7 nm, 12 nm). In PassMark, the Ryzen 7 5700X scores 26,609 against the Ryzen 9 3900's 30,588 — a 13.9% lead for the Ryzen 9 3900. Cinebench R23 multi-core: 14,000 vs 17,700 (23.3% advantage for the Ryzen 9 3900). Geekbench 6 single-core — the metric most relevant to gaming — records 2,116 vs 1,713, a 21% lead for the Ryzen 7 5700X that directly translates to higher frame rates. Multi-core Geekbench: 9,715 vs 10,983 (12.3% advantage for the Ryzen 9 3900). L3 cache: 32 MB (total) on the Ryzen 7 5700X vs 64 MB on the Ryzen 9 3900.

Feature	Ryzen 7 5700X	Ryzen 9 3900
Cores / Threads	8 / 16	12 / 24+50%
Boost Clock	4.6 GHz+7%	4.3 GHz
Base Clock	3.4 GHz+10%	3.1 GHz
L3 Cache	32 MB (total)	64 MB+100%
L2 Cache	512K (per core)	512 kB (per core)
Process	7 nm	7 nm, 12 nm
Architecture	Vermeer (Zen 3) (2020−2022)	Matisse (Zen 2) (2019−2020)
PassMark	26,609	30,588+15%
Cinebench R23 Multi	14,000	17,700+26%
Geekbench 6 Single	2,116+24%	1,713
Geekbench 6 Multi	9,715	10,983+13%

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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: A320,B350,X370,B450,X470,B550,X570 (Ryzen 7 5700X) and X570,B550,X470,B450 (Ryzen 9 3900).

Feature	Ryzen 7 5700X	Ryzen 9 3900
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	No
PCIe Lanes	24	24

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Advanced Features

Both processors feature an unlocked multiplier for overclocking. Both support AMD-V virtualization. Primary use case: Ryzen 7 5700X targets Gaming, Ryzen 9 3900 targets Workstation Desktop (low power). Direct competitor: Ryzen 7 5700X rivals Core i7-11700K; Ryzen 9 3900 rivals Core i9-9900.

Feature	Ryzen 7 5700X	Ryzen 9 3900
Integrated GPU	No	No
Unlocked	Yes	Yes
AVX-512	No	No
Virtualization	AMD-V	AMD-V
Target Use	Gaming	Workstation Desktop (low power)

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Value Analysis

At launch, the Ryzen 7 5700X was priced at $299, while the Ryzen 9 3900 came in at $499. On launch pricing ($299 vs $499), Ryzen 7 5700X was $200 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 7 5700X delivers 89.0 pts/$ vs 61.3 pts/$ for the Ryzen 9 3900 — making the Ryzen 7 5700X the 36.9% better value option.

Feature	Ryzen 7 5700X	Ryzen 9 3900
MSRP	$299-40%	$499
Performance per Dollar	89.0+45%	61.3
Release Date	2022	2019

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