Ryzen 7 5700X vs Ryzen 9 3900

AMD

Ryzen 7 5700X

8 Cores16 Thrd65 WWMax: 4.6 GHz2022

Popular choices:

VS
AMD

Ryzen 9 3900

12 Cores24 Thrd65 WWMax: 4.3 GHz2019

Popular choices:

Performance Spectrum - CPU

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.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

Ryzen 7 5700X

2022

Why buy it

  • Better for gaming: +3.8% higher average FPS across 4 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 4 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 matters more to you. For gaming, Ryzen 7 5700X is ahead with a 3.8% average FPS lead across 4 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 better fit. You are getting 26.4% better Cinebench R23 multi-core, backed by 12 cores and 24 threads. It also carries 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 smarter buy today. Ryzen 7 5700X is $200 cheaper on MSRP at $299 MSRP versus $499 MSRP, and it gives you a 3.8% average FPS lead across 4 shared CPU game tests in our data. The trade-off is that Ryzen 9 3900 is still stronger for heavier multi-core work with 26.4% better Cinebench R23 multi-core. It is also 45.2% better value on MSRP (89.0 vs 61.3 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper.
Which one is more future-proof for 2026 and beyond?
Ryzen 7 5700X is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2019). That makes it the safer long-term pick.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Path of Exile 2

Path of Exile 2

PresetRyzen 7 5700XRyzen 9 3900
1080p
low156 FPS159 FPS
medium129 FPS130 FPS
high115 FPS111 FPS
ultra94 FPS92 FPS
1440p
low137 FPS144 FPS
medium111 FPS115 FPS
high95 FPS94 FPS
ultra78 FPS78 FPS
4K
low77 FPS78 FPS
medium67 FPS67 FPS
high55 FPS53 FPS
ultra43 FPS43 FPS
Counter-Strike 2

Counter-Strike 2

PresetRyzen 7 5700XRyzen 9 3900
1080p
low649 FPS534 FPS
medium549 FPS470 FPS
high448 FPS384 FPS
ultra404 FPS342 FPS
1440p
low552 FPS460 FPS
medium484 FPS411 FPS
high407 FPS347 FPS
ultra350 FPS289 FPS
4K
low343 FPS288 FPS
medium303 FPS261 FPS
high277 FPS238 FPS
ultra245 FPS213 FPS
League of Legends

League of Legends

PresetRyzen 7 5700XRyzen 9 3900
1080p
low665 FPS709 FPS
medium557 FPS589 FPS
high509 FPS536 FPS
ultra439 FPS472 FPS
1440p
low554 FPS541 FPS
medium458 FPS448 FPS
high419 FPS401 FPS
ultra358 FPS347 FPS
4K
low402 FPS394 FPS
medium322 FPS315 FPS
high292 FPS279 FPS
ultra229 FPS224 FPS
Valorant

Valorant

PresetRyzen 7 5700XRyzen 9 3900
1080p
low665 FPS765 FPS
medium665 FPS765 FPS
high665 FPS711 FPS
ultra665 FPS638 FPS
1440p
low665 FPS725 FPS
medium665 FPS644 FPS
high607 FPS553 FPS
ultra533 FPS486 FPS
4K
low545 FPS516 FPS
medium488 FPS469 FPS
high439 FPS411 FPS
ultra385 FPS360 FPS

Technical Specifications

Side-by-side comparison of Ryzen 7 5700X and Ryzen 9 3900

AMD

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.

AMD

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.

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.

FeatureRyzen 7 5700XRyzen 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%
🧠

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).

FeatureRyzen 7 5700XRyzen 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
🔧

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.

FeatureRyzen 7 5700XRyzen 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)
💰

Value Analysis

The Ryzen 7 5700X launched at $299 MSRP, while the Ryzen 9 3900 debuted at $499. On MSRP ($299 vs $499), the Ryzen 7 5700X is $200 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 7 5700X delivers 89.0 pts/$ vs 61.3 pts/$ for the Ryzen 9 3900 — making the Ryzen 7 5700X the 36.9% better value option.

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