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 5900X

2020

Why buy it

✅Better for gaming: +19.3% higher average FPS across 50 shared CPU benchmark tests.
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Lower Cinebench R23 multi-core (21,000 vs 23,200).
❌Launch MSRP is still $549 MSRP, while Ryzen 9 PRO 5945 mostly shows up through inconsistent older-market listings.
❌61.5% higher power demand at 105W vs 65W.

Ryzen 9 PRO 5945

2022

Why buy it

✅+10.5% higher Cinebench R23 multi-core.
✅Draws 65W instead of 105W, a 40W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.

Ryzen 9 5900X

2020

Ryzen 9 PRO 5945

2022

Why buy it

✅Better for gaming: +19.3% higher average FPS across 50 shared CPU benchmark tests.
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.

Why buy it

✅+10.5% higher Cinebench R23 multi-core.
✅Draws 65W instead of 105W, a 40W reduction.

Trade-offs

❌Lower Cinebench R23 multi-core (21,000 vs 23,200).
❌Launch MSRP is still $549 MSRP, while Ryzen 9 PRO 5945 mostly shows up through inconsistent older-market listings.
❌61.5% higher power demand at 105W vs 65W.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.

Quick Answers

So, is Ryzen 9 PRO 5945 better than Ryzen 9 5900X?

It depends on what matters more to you. For gaming, Ryzen 9 5900X is ahead with a 19.3% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Ryzen 9 PRO 5945 pulls ahead with 10.5% better Cinebench R23 multi-core.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 PRO 5945 is the better fit. You are getting 10.5% better Cinebench R23 multi-core, backed by 12 cores and 24 threads.

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

Ryzen 9 PRO 5945 is still the faster CPU overall, but Ryzen 9 5900X makes more sense if price matters more than absolute performance. Ryzen 9 PRO 5945 is at an unclear MSRP at unclear MSRP versus $549 MSRP, and it gives you 10.5% better Cinebench R23 multi-core. The trade-off is that Ryzen 9 5900X is still the better pure gaming CPU with a 19.3% average FPS lead across 50 shared CPU game tests in our data. Ryzen 9 5900X is also 100.0% better value on MSRP (71.0 vs 0.0 PassMark/$), 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 PRO 5945 is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2020) and more multi-core headroom with 12 cores / 24 threads instead of 12/24. That extra compute headroom should age better as games, background tasks, and creator workloads get heavier.

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 5900X Benchmark Check

Ryzen 9 PRO 5945 Benchmark Check

Path of Exile 2

Preset	Ryzen 9 5900X	Ryzen 9 PRO 5945
1080p
low	323 FPS	164 FPS
medium	291 FPS	136 FPS
high	243 FPS	116 FPS
ultra	193 FPS	97 FPS
1440p
low	307 FPS	149 FPS
medium	248 FPS	119 FPS
high	192 FPS	97 FPS
ultra	157 FPS	82 FPS
4K
low	193 FPS	83 FPS
medium	156 FPS	72 FPS
high	115 FPS	57 FPS
ultra	103 FPS	46 FPS

Open Ryzen 9 5900X Open Ryzen 9 PRO 5945

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 5900X	Ryzen 9 PRO 5945
1080p
low	772 FPS	630 FPS
medium	647 FPS	544 FPS
high	508 FPS	434 FPS
ultra	450 FPS	381 FPS
1440p
low	619 FPS	524 FPS
medium	536 FPS	460 FPS
high	443 FPS	385 FPS
ultra	364 FPS	315 FPS
4K
low	365 FPS	307 FPS
medium	318 FPS	271 FPS
high	289 FPS	249 FPS
ultra	255 FPS	221 FPS

Open Ryzen 9 5900X Open Ryzen 9 PRO 5945

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 5900X	Ryzen 9 PRO 5945
1080p
low	832 FPS	845 FPS
medium	645 FPS	670 FPS
high	558 FPS	586 FPS
ultra	459 FPS	494 FPS
1440p
low	721 FPS	676 FPS
medium	565 FPS	535 FPS
high	488 FPS	460 FPS
ultra	407 FPS	387 FPS
4K
low	511 FPS	480 FPS
medium	421 FPS	398 FPS
high	374 FPS	354 FPS
ultra	308 FPS	293 FPS

Open Ryzen 9 5900X Open Ryzen 9 PRO 5945

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 5900X	Ryzen 9 PRO 5945
1080p
low	974 FPS	864 FPS
medium	974 FPS	864 FPS
high	934 FPS	836 FPS
ultra	826 FPS	743 FPS
1440p
low	959 FPS	864 FPS
medium	843 FPS	757 FPS
high	726 FPS	661 FPS
ultra	617 FPS	566 FPS
4K
low	694 FPS	626 FPS
medium	621 FPS	557 FPS
high	541 FPS	490 FPS
ultra	437 FPS	423 FPS

Open Ryzen 9 5900X Open Ryzen 9 PRO 5945

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 5900X and Ryzen 9 PRO 5945

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.

Ryzen 9 PRO 5945

The Ryzen 9 PRO 5945 is manufactured by AMD. It was released in 4 April 2022 (3 years ago). It is based on the Vermeer (2020−2025) architecture. It features 12 cores and 24 threads. Base frequency is 3 GHz, with boost up to 4.7 GHz. L3 cache: 64 MB. L2 cache: 512 kB (per core). Built on 7 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 34,549 points. Launch price was $499.

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Processing Power

Both the Ryzen 9 5900X and Ryzen 9 PRO 5945 share an identical 12-core/24-thread configuration. Boost clocks reach 4.8 GHz on the Ryzen 9 5900X versus 4.7 GHz on the Ryzen 9 PRO 5945 — a 2.1% clock advantage for the Ryzen 9 5900X (base: 3.7 GHz vs 3 GHz). The Ryzen 9 5900X uses the Vermeer (Zen3) (2020−2022) architecture (7 nm, 12 nm), while the Ryzen 9 PRO 5945 uses Vermeer (2020−2025) (7 nm). In PassMark, the Ryzen 9 5900X scores 38,955 against the Ryzen 9 PRO 5945's 34,549 — a 12% lead for the Ryzen 9 5900X. Cinebench R23 multi-core: 21,000 vs 23,200 (10% advantage for the Ryzen 9 PRO 5945). Geekbench 6 single-core — the metric most relevant to gaming — records 2,174 vs 2,175, a 0% lead for the Ryzen 9 PRO 5945 that directly translates to higher frame rates. Multi-core Geekbench: 11,888 vs 12,500 (5% advantage for the Ryzen 9 PRO 5945). Both processors carry 64 MB of L3 cache.

Feature	Ryzen 9 5900X	Ryzen 9 PRO 5945
Cores / Threads	12 / 24	12 / 24
Boost Clock	4.8 GHz+2%	4.7 GHz
Base Clock	3.7 GHz+23%	3 GHz
L3 Cache	64 MB	64 MB
L2 Cache	512K (per core)	512 kB (per core)
Process	7 nm, 12 nm	7 nm
Architecture	Vermeer (Zen3) (2020−2022)	Vermeer (2020−2025)
PassMark	38,955+13%	34,549
Cinebench R23 Multi	21,000	23,200+10%
Geekbench 6 Single	2,174	2,175
Geekbench 6 Multi	11,888	12,500+5%

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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. PCIe lanes: 24 (Ryzen 9 5900X) vs 20 (Ryzen 9 PRO 5945) — the Ryzen 9 5900X offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X) and X570,B550,A520,X470,B450 (Ryzen 9 PRO 5945).

Feature	Ryzen 9 5900X	Ryzen 9 PRO 5945
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+20%	20

🔧

Advanced Features

Only the Ryzen 9 5900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: AMD-V (Ryzen 9 5900X) vs AMD-V (SVM) (Ryzen 9 PRO 5945). Primary use case: Ryzen 9 5900X targets Workstation, Ryzen 9 PRO 5945 targets High-end Gaming. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K; Ryzen 9 PRO 5945 rivals Core i9-12900.