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 9 3900X

2019

Why buy it

✅Better for gaming: +4.6% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $50 less on MSRP ($499 MSRP vs $549 MSRP).
✅Includes a boxed cooler (Wraith Prism), unlike Ryzen 9 5900X.

Trade-offs

❌Lower PassMark per dollar, at 65.2 vs 71.0 PassMark/$ ($499 MSRP vs $549 MSRP).

Ryzen 9 5900X

2020

Why buy it

✅Delivers 8.9% more PassMark for each dollar spent, at 71.0 vs 65.2 PassMark/$ ($549 MSRP vs $499 MSRP).

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 3900X across 50 shared CPU benchmark tests.
❌Lower Geekbench multi-core (11,888 vs 12,000).
❌
10% HIGHER MSRP
$549 MSRPvs$499 MSRP
❌No boxed cooler included, unlike Ryzen 9 3900X.

Ryzen 9 3900X

2019

Ryzen 9 5900X

2020

Why buy it

✅Better for gaming: +4.6% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $50 less on MSRP ($499 MSRP vs $549 MSRP).
✅Includes a boxed cooler (Wraith Prism), unlike Ryzen 9 5900X.

Why buy it

✅Delivers 8.9% more PassMark for each dollar spent, at 71.0 vs 65.2 PassMark/$ ($549 MSRP vs $499 MSRP).

Trade-offs

❌Lower PassMark per dollar, at 65.2 vs 71.0 PassMark/$ ($499 MSRP vs $549 MSRP).

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 3900X across 50 shared CPU benchmark tests.
❌Lower Geekbench multi-core (11,888 vs 12,000).
❌
10% HIGHER MSRP
$549 MSRPvs$499 MSRP
❌No boxed cooler included, unlike Ryzen 9 3900X.

Quick Answers

So, is Ryzen 9 3900X better than Ryzen 9 5900X?

Yes. Ryzen 9 3900X is the better overall CPU here. You are getting a 4.6% average FPS lead across 50 shared CPU game tests in our data and 0.9% better Geekbench multi-core, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 3900X is the better pick here. According to our tests, it delivers 4.6% 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 better fit. You are getting 0.9% better Geekbench multi-core, backed by 12 cores and 24 threads.

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

Ryzen 9 3900X is still the faster CPU overall, but Ryzen 9 5900X makes more sense if price matters more than absolute performance. Ryzen 9 3900X is $50 cheaper on MSRP at $499 MSRP versus $549 MSRP, and it gives you a 4.6% average FPS lead across 50 shared CPU game tests in our data. Ryzen 9 5900X is also 8.9% better value on MSRP (71.0 vs 65.2 PassMark/$), which is why it is easier to justify for price-conscious builds on paper.

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

Ryzen 9 5900X is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2020 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.

Ryzen 9 3900X Benchmark Check

Ryzen 9 5900X Benchmark Check

Path of Exile 2

Preset	Ryzen 9 3900X	Ryzen 9 5900X
1080p
low	209 FPS	323 FPS
medium	170 FPS	291 FPS
high	140 FPS	243 FPS
ultra	114 FPS	193 FPS
1440p
low	171 FPS	307 FPS
medium	131 FPS	248 FPS
high	104 FPS	192 FPS
ultra	86 FPS	157 FPS
4K
low	92 FPS	193 FPS
medium	77 FPS	156 FPS
high	61 FPS	115 FPS
ultra	49 FPS	103 FPS

Open Ryzen 9 3900X Open Ryzen 9 5900X

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 3900X	Ryzen 9 5900X
1080p
low	781 FPS	772 FPS
medium	654 FPS	647 FPS
high	510 FPS	508 FPS
ultra	447 FPS	450 FPS
1440p
low	648 FPS	619 FPS
medium	552 FPS	536 FPS
high	452 FPS	443 FPS
ultra	369 FPS	364 FPS
4K
low	380 FPS	365 FPS
medium	326 FPS	318 FPS
high	293 FPS	289 FPS
ultra	258 FPS	255 FPS

Open Ryzen 9 3900X Open Ryzen 9 5900X

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 3900X	Ryzen 9 5900X
1080p
low	813 FPS	832 FPS
medium	794 FPS	645 FPS
high	730 FPS	558 FPS
ultra	647 FPS	459 FPS
1440p
low	707 FPS	721 FPS
medium	583 FPS	565 FPS
high	522 FPS	488 FPS
ultra	459 FPS	407 FPS
4K
low	503 FPS	511 FPS
medium	403 FPS	421 FPS
high	361 FPS	374 FPS
ultra	292 FPS	308 FPS

Open Ryzen 9 3900X Open Ryzen 9 5900X

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 3900X	Ryzen 9 5900X
1080p
low	813 FPS	974 FPS
medium	813 FPS	974 FPS
high	813 FPS	934 FPS
ultra	813 FPS	826 FPS
1440p
low	813 FPS	959 FPS
medium	813 FPS	843 FPS
high	714 FPS	726 FPS
ultra	619 FPS	617 FPS
4K
low	669 FPS	694 FPS
medium	594 FPS	621 FPS
high	525 FPS	541 FPS
ultra	437 FPS	437 FPS

Open Ryzen 9 3900X Open Ryzen 9 5900X

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 3900X and Ryzen 9 5900X

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.

Ryzen 9 5900X

The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4-3200. Passmark benchmark score: 38,955 points. Launch price was $549.

⚡

Processing Power

Both the Ryzen 9 3900X and Ryzen 9 5900X share an identical 12-core/24-thread configuration. Boost clocks reach 4.6 GHz on the Ryzen 9 3900X versus 4.8 GHz on the Ryzen 9 5900X — a 4.3% clock advantage for the Ryzen 9 5900X (base: 3.8 GHz vs 3.7 GHz). The Ryzen 9 3900X uses the Matisse (Zen 2) (2019−2020) architecture (7 nm, 12 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the Ryzen 9 3900X scores 32,517 against the Ryzen 9 5900X's 38,955 — a 18% lead for the Ryzen 9 5900X. Geekbench 6 single-core — the metric most relevant to gaming — records 1,300 vs 2,174, a 50.3% lead for the Ryzen 9 5900X that directly translates to higher frame rates. Multi-core Geekbench: 12,000 vs 11,888 (0.9% advantage for the Ryzen 9 3900X). Both processors carry 64 MB of L3 cache.

Feature	Ryzen 9 3900X	Ryzen 9 5900X
Cores / Threads	12 / 24	12 / 24
Boost Clock	4.6 GHz	4.8 GHz+4%
Base Clock	3.8 GHz+3%	3.7 GHz
L3 Cache	64 MB	64 MB
L2 Cache	512K (per core)	512K (per core)
Process	7 nm, 12 nm	7 nm, 12 nm
Architecture	Matisse (Zen 2) (2019−2020)	Vermeer (Zen3) (2020−2022)
PassMark	32,517	38,955+20%
Cinebench R23 Multi	—	21,000
Geekbench 6 Single	1,300	2,174+67%
Geekbench 6 Multi	12,000	11,888

🧠

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: X570,B550 (Ryzen 9 3900X) and A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X).

Feature	Ryzen 9 3900X	Ryzen 9 5900X
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

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Both support AMD-V virtualization. Primary use case: Ryzen 9 3900X targets Workstation, Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K.

Feature	Ryzen 9 3900X	Ryzen 9 5900X
Integrated GPU	No	No
IGPU Model	None	—
Unlocked	Yes	Yes
AVX-512	No	No
Virtualization	AMD-V	AMD-V
Target Use	Workstation	Workstation

💰

Value Analysis

The Ryzen 9 3900X launched at $499 MSRP, while the Ryzen 9 5900X debuted at $549. On MSRP ($499 vs $549), the Ryzen 9 3900X is $50 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 3900X delivers 65.2 pts/$ vs 71.0 pts/$ for the Ryzen 9 5900X — making the Ryzen 9 5900X the 8.5% better value option.