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

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 PRO 7945 across 4 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (21,000 vs 28,905).
❌Lower PassMark per dollar, at 71.0 vs 114.5 PassMark/$ ($549 MSRP vs $409 MSRP).
❌61.5% higher power demand at 105W vs 65W.
❌Older platform position on AM4 with DDR4, while Ryzen 9 PRO 7945 moves to AM5 and DDR5.

Ryzen 9 PRO 7945

2023

Why buy it

✅Better for gaming: +18.3% higher average FPS across 4 shared CPU benchmark tests.
✅Costs $140 less on MSRP ($409 MSRP vs $549 MSRP).
✅Delivers 61.4% more PassMark for each dollar spent, at 114.5 vs 71.0 PassMark/$ ($409 MSRP vs $549 MSRP).
✅Draws 65W instead of 105W, a 40W reduction.
✅Newer platform on AM5 with DDR5 support instead of AM4 and DDR4.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Ryzen 9 5900X

2020

Ryzen 9 PRO 7945

2023

Why buy it

✅Better for gaming: +18.3% higher average FPS across 4 shared CPU benchmark tests.
✅Costs $140 less on MSRP ($409 MSRP vs $549 MSRP).
✅Delivers 61.4% more PassMark for each dollar spent, at 114.5 vs 71.0 PassMark/$ ($409 MSRP vs $549 MSRP).
✅Draws 65W instead of 105W, a 40W reduction.
✅Newer platform on AM5 with DDR5 support instead of AM4 and DDR4.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 PRO 7945 across 4 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (21,000 vs 28,905).
❌Lower PassMark per dollar, at 71.0 vs 114.5 PassMark/$ ($549 MSRP vs $409 MSRP).
❌61.5% higher power demand at 105W vs 65W.
❌Older platform position on AM4 with DDR4, while Ryzen 9 PRO 7945 moves to AM5 and DDR5.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Quick Answers

So, is Ryzen 9 PRO 7945 better than Ryzen 9 5900X?

Yes. Ryzen 9 PRO 7945 is the better overall CPU here. You are getting a 18.3% average FPS lead across 4 shared CPU game tests in our data, 37.6% better Cinebench R23 multi-core, 20.2% higher PassMark, and the stronger long-term platform, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 PRO 7945 is the better pick here. According to our tests, it delivers 18.3% more average FPS across 4 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 PRO 7945 is the better fit. You are getting 37.6% 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 7945 is the smarter buy today. Ryzen 9 PRO 7945 is $140 cheaper on MSRP at $409 MSRP versus $549 MSRP, and it gives you a 18.3% average FPS lead across 4 shared CPU game tests in our data. It is also 61.4% better value on MSRP (114.5 vs 71.0 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper. That said, if you already own a compatible AM4 + DDR4 setup, Ryzen 9 5900X can still make sense as a platform-matched option because it avoids a motherboard and RAM swap, but on MSRP alone you would want to find it meaningfully cheaper in real-world listings before that path becomes easy to justify.

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

Ryzen 9 PRO 7945 is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2020), a healthier platform with AM5 and DDR5 instead of AM4, and more multi-core headroom with 12 cores / 24 threads instead of 12/24. That should give you a better long-term upgrade path for motherboard, RAM, and future CPU swaps.

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 7945 Benchmark Check

Path of Exile 2

Preset	Ryzen 9 5900X	Ryzen 9 PRO 7945
1080p
low	323 FPS	269 FPS
medium	291 FPS	244 FPS
high	243 FPS	209 FPS
ultra	193 FPS	183 FPS
1440p
low	307 FPS	260 FPS
medium	248 FPS	212 FPS
high	192 FPS	168 FPS
ultra	157 FPS	151 FPS
4K
low	193 FPS	180 FPS
medium	156 FPS	147 FPS
high	115 FPS	110 FPS
ultra	103 FPS	98 FPS

Open Ryzen 9 5900X Open Ryzen 9 PRO 7945

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 5900X	Ryzen 9 PRO 7945
1080p
low	772 FPS	660 FPS
medium	647 FPS	567 FPS
high	508 FPS	426 FPS
ultra	450 FPS	368 FPS
1440p
low	619 FPS	555 FPS
medium	536 FPS	495 FPS
high	443 FPS	384 FPS
ultra	364 FPS	306 FPS
4K
low	365 FPS	313 FPS
medium	318 FPS	283 FPS
high	289 FPS	250 FPS
ultra	255 FPS	214 FPS

Open Ryzen 9 5900X Open Ryzen 9 PRO 7945

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 5900X	Ryzen 9 PRO 7945
1080p
low	832 FPS	1025 FPS
medium	645 FPS	1118 FPS
high	558 FPS	1041 FPS
ultra	459 FPS	875 FPS
1440p
low	721 FPS	940 FPS
medium	565 FPS	836 FPS
high	488 FPS	754 FPS
ultra	407 FPS	656 FPS
4K
low	511 FPS	574 FPS
medium	421 FPS	495 FPS
high	374 FPS	445 FPS
ultra	308 FPS	378 FPS

Open Ryzen 9 5900X Open Ryzen 9 PRO 7945

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 5900X	Ryzen 9 PRO 7945
1080p
low	974 FPS	1171 FPS
medium	974 FPS	1015 FPS
high	934 FPS	981 FPS
ultra	826 FPS	854 FPS
1440p
low	959 FPS	1019 FPS
medium	843 FPS	888 FPS
high	726 FPS	762 FPS
ultra	617 FPS	639 FPS
4K
low	694 FPS	754 FPS
medium	621 FPS	658 FPS
high	541 FPS	569 FPS
ultra	437 FPS	437 FPS

Open Ryzen 9 5900X Open Ryzen 9 PRO 7945

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 5900X and Ryzen 9 PRO 7945

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 7945

The Ryzen 9 PRO 7945 is manufactured by AMD. It was released in 13 June 2023 (2 years ago). It is based on the Raphael (2023−2025) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 5.4 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: AM5. Thermal design power (TDP): 65 Watt. Memory support: DDR5. Passmark benchmark score: 46,828 points. Launch price was $499.

⚡

Processing Power

Both the Ryzen 9 5900X and Ryzen 9 PRO 7945 share an identical 12-core/24-thread configuration. Boost clocks reach 4.8 GHz on the Ryzen 9 5900X versus 5.4 GHz on the Ryzen 9 PRO 7945 — a 11.8% clock advantage for the Ryzen 9 PRO 7945 (base: 3.7 GHz vs 3.7 GHz). The Ryzen 9 5900X uses the Vermeer (Zen3) (2020−2022) architecture (7 nm, 12 nm), while the Ryzen 9 PRO 7945 uses Raphael (2023−2025) (5 nm). In PassMark, the Ryzen 9 5900X scores 38,955 against the Ryzen 9 PRO 7945's 46,828 — a 18.4% lead for the Ryzen 9 PRO 7945. Cinebench R23 multi-core: 21,000 vs 28,905 (31.7% advantage for the Ryzen 9 PRO 7945). Geekbench 6 single-core — the metric most relevant to gaming — records 2,174 vs 2,206, a 1.5% lead for the Ryzen 9 PRO 7945 that directly translates to higher frame rates. Multi-core Geekbench: 11,888 vs 16,832 (34.4% advantage for the Ryzen 9 PRO 7945). L3 cache: 64 MB on the Ryzen 9 5900X vs 64 MB (total) on the Ryzen 9 PRO 7945.

Feature	Ryzen 9 5900X	Ryzen 9 PRO 7945
Cores / Threads	12 / 24	12 / 24
Boost Clock	4.8 GHz	5.4 GHz+13%
Base Clock	3.7 GHz	3.7 GHz
L3 Cache	64 MB	64 MB (total)
L2 Cache	512K (per core)	1 MB (per core)+100%
Process	7 nm, 12 nm	5 nm-29%
Architecture	Vermeer (Zen3) (2020−2022)	Raphael (2023−2025)
PassMark	38,955	46,828+20%
Cinebench R23 Multi	21,000	28,905+38%
Geekbench 6 Single	2,174	2,206+1%
Geekbench 6 Multi	11,888	16,832+42%

🧠

Memory & Platform

The Ryzen 9 5900X uses the AM4 socket (PCIe 4.0), while the Ryzen 9 PRO 7945 uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Ryzen 9 5900X versus DDR5-5200 on the Ryzen 9 PRO 7945 — the Ryzen 9 PRO 7945 supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 128 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 24 (Ryzen 9 5900X) vs 28 (Ryzen 9 PRO 7945) — the Ryzen 9 PRO 7945 offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X) and AMD X670E,AMD X670,AMD B650E,AMD B650,AMD A620 (Ryzen 9 PRO 7945).

Feature	Ryzen 9 5900X	Ryzen 9 PRO 7945
Socket	AM4	AM5
PCIe Generation	PCIe 4.0	PCIe 5.0+25%
Max RAM Speed	DDR4-3200	DDR5-5200+25%
Max RAM Capacity	128 GB	128 GB
RAM Channels	2	2
ECC Support	Yes	Yes
PCIe Lanes	24	28+17%

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Only the Ryzen 9 PRO 7945 supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V (Ryzen 9 5900X) vs true (Ryzen 9 PRO 7945). The Ryzen 9 PRO 7945 includes integrated graphics (Radeon Graphics), while the Ryzen 9 5900X requires a dedicated GPU. Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K; Ryzen 9 PRO 7945 rivals Core i9-13900.

Feature	Ryzen 9 5900X	Ryzen 9 PRO 7945
Integrated GPU	No	Yes
IGPU Model	—	Radeon Graphics
Unlocked	Yes	Yes
AVX-512	No	Yes
Virtualization	AMD-V	true
Target Use	Workstation	—

💰

Value Analysis

The Ryzen 9 5900X launched at $549 MSRP, while the Ryzen 9 PRO 7945 debuted at $409. On MSRP ($549 vs $409), the Ryzen 9 PRO 7945 is $140 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 5900X delivers 71.0 pts/$ vs 114.5 pts/$ for the Ryzen 9 PRO 7945 — making the Ryzen 9 PRO 7945 the 47% better value option.