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

✅+22.1% higher Cinebench R23 multi-core.
✅+300% larger total L3 cache (64 MB vs 16 MB).
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Lower Geekbench single-core performance for gaming (2,174 vs 2,646).
❌Launch MSRP is still $549 MSRP, while Ryzen 9 7940H mostly shows up through inconsistent older-market listings.
❌200% higher power demand at 105W vs 35W.
❌Older platform position on AM4 with DDR4, while Ryzen 9 7940H moves to FP8 and DDR5.
❌No integrated graphics, while Ryzen 9 7940H can still boot and troubleshoot without a discrete GPU.

Ryzen 9 7940H

2023

Why buy it

✅+21.7% higher Geekbench single-core performance for gaming and desktop responsiveness.
✅Draws 35W instead of 105W, a 70W reduction.
✅Newer platform on FP8 with DDR5 support instead of AM4 and DDR4.
✅Integrated graphics onboard with Radeon 780M, while Ryzen 9 5900X needs a discrete GPU.

Trade-offs

❌Lower Cinebench R23 multi-core (17,200 vs 21,000).
❌Smaller total L3 cache (16 MB vs 64 MB).

Ryzen 9 5900X

2020

Ryzen 9 7940H

2023

Why buy it

✅+22.1% higher Cinebench R23 multi-core.
✅+300% larger total L3 cache (64 MB vs 16 MB).
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.

Why buy it

✅+21.7% higher Geekbench single-core performance for gaming and desktop responsiveness.
✅Draws 35W instead of 105W, a 70W reduction.
✅Newer platform on FP8 with DDR5 support instead of AM4 and DDR4.
✅Integrated graphics onboard with Radeon 780M, while Ryzen 9 5900X needs a discrete GPU.

Trade-offs

❌Lower Geekbench single-core performance for gaming (2,174 vs 2,646).
❌Launch MSRP is still $549 MSRP, while Ryzen 9 7940H mostly shows up through inconsistent older-market listings.
❌200% higher power demand at 105W vs 35W.
❌Older platform position on AM4 with DDR4, while Ryzen 9 7940H moves to FP8 and DDR5.
❌No integrated graphics, while Ryzen 9 7940H can still boot and troubleshoot without a discrete GPU.

Trade-offs

❌Lower Cinebench R23 multi-core (17,200 vs 21,000).
❌Smaller total L3 cache (16 MB vs 64 MB).

Quick Answers

So, is Ryzen 9 7940H better than Ryzen 9 5900X?

It depends on what matters more to you. For gaming, Ryzen 9 7940H is ahead with a 0.6% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Ryzen 9 5900X pulls ahead with 22.1% better Cinebench R23 multi-core. Ryzen 9 5900X also has the bigger cache pool with 300% larger total L3 cache (64 MB vs 16 MB).

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

For streaming, content creation, and heavier multitasking, Ryzen 9 5900X is the better fit. You are getting 22.1% better Cinebench R23 multi-core, backed by 12 cores and 24 threads. It also carries the larger cache pool with 300% larger total L3 cache (64 MB vs 16 MB).

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

Ryzen 9 7940H is still the faster CPU overall, but Ryzen 9 5900X makes more sense if price matters more than absolute performance. Ryzen 9 7940H is at an unclear MSRP at unclear MSRP versus $549 MSRP, and it gives you a 0.6% average FPS lead across 50 shared CPU game tests in our data. The trade-off is that Ryzen 9 5900X is still stronger for heavier multi-core work with 22.1% better Cinebench R23 multi-core. Ryzen 9 5900X is also 100.0% better value on MSRP (71.0 vs 0.0 PassMark/$), 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 7940H is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2020) and a healthier platform with FP8 and DDR5 instead of AM4. 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 7940H Benchmark Check

Path of Exile 2

Preset	Ryzen 9 5900X	Ryzen 9 7940H
1080p
low	323 FPS	268 FPS
medium	291 FPS	241 FPS
high	243 FPS	206 FPS
ultra	193 FPS	176 FPS
1440p
low	307 FPS	234 FPS
medium	248 FPS	191 FPS
high	192 FPS	158 FPS
ultra	157 FPS	138 FPS
4K
low	193 FPS	160 FPS
medium	156 FPS	132 FPS
high	115 FPS	102 FPS
ultra	103 FPS	89 FPS

Open Ryzen 9 5900X Open Ryzen 9 7940H

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 5900X	Ryzen 9 7940H
1080p
low	772 FPS	502 FPS
medium	647 FPS	417 FPS
high	508 FPS	360 FPS
ultra	450 FPS	319 FPS
1440p
low	619 FPS	439 FPS
medium	536 FPS	385 FPS
high	443 FPS	332 FPS
ultra	364 FPS	282 FPS
4K
low	365 FPS	291 FPS
medium	318 FPS	267 FPS
high	289 FPS	251 FPS
ultra	255 FPS	216 FPS

Open Ryzen 9 5900X Open Ryzen 9 7940H

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 5900X	Ryzen 9 7940H
1080p
low	832 FPS	729 FPS
medium	645 FPS	729 FPS
high	558 FPS	729 FPS
ultra	459 FPS	650 FPS
1440p
low	721 FPS	729 FPS
medium	565 FPS	637 FPS
high	488 FPS	548 FPS
ultra	407 FPS	464 FPS
4K
low	511 FPS	534 FPS
medium	421 FPS	460 FPS
high	374 FPS	409 FPS
ultra	308 FPS	344 FPS

Open Ryzen 9 5900X Open Ryzen 9 7940H

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 5900X	Ryzen 9 7940H
1080p
low	974 FPS	729 FPS
medium	974 FPS	729 FPS
high	934 FPS	729 FPS
ultra	826 FPS	729 FPS
1440p
low	959 FPS	729 FPS
medium	843 FPS	729 FPS
high	726 FPS	716 FPS
ultra	617 FPS	631 FPS
4K
low	694 FPS	619 FPS
medium	621 FPS	553 FPS
high	541 FPS	496 FPS
ultra	437 FPS	434 FPS

Open Ryzen 9 5900X Open Ryzen 9 7940H

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 5900X and Ryzen 9 7940H

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 7940H

The Ryzen 9 7940H is manufactured by AMD. It was released in Janeiro 2023 (2 years ago). It is based on the Phoenix (2023−2024) architecture. It features 8 cores and 16 threads. Base frequency is 4 GHz, with boost up to 5.2 GHz. L3 cache: 16 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FP8. Thermal design power (TDP): 35 Watt. Memory support: DDR5-5600. Passmark benchmark score: 29,151 points. Launch price was $299.

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Processing Power

The Ryzen 9 5900X packs 12 cores / 24 threads, while the Ryzen 9 7940H offers 8 cores / 16 threads — the Ryzen 9 5900X has 4 more cores. Boost clocks reach 4.8 GHz on the Ryzen 9 5900X versus 5.2 GHz on the Ryzen 9 7940H — a 8% clock advantage for the Ryzen 9 7940H (base: 3.7 GHz vs 4 GHz). The Ryzen 9 5900X uses the Vermeer (Zen3) (2020−2022) architecture (7 nm, 12 nm), while the Ryzen 9 7940H uses Phoenix (2023−2024) (4 nm). In PassMark, the Ryzen 9 5900X scores 38,955 against the Ryzen 9 7940H's 29,151 — a 28.8% lead for the Ryzen 9 5900X. Cinebench R23 multi-core: 21,000 vs 17,200 (19.9% advantage for the Ryzen 9 5900X). Geekbench 6 single-core — the metric most relevant to gaming — records 2,174 vs 2,646, a 19.6% lead for the Ryzen 9 7940H that directly translates to higher frame rates. Multi-core Geekbench: 11,888 vs 13,495 (12.7% advantage for the Ryzen 9 7940H). L3 cache: 64 MB on the Ryzen 9 5900X vs 16 MB (total) on the Ryzen 9 7940H.

Feature	Ryzen 9 5900X	Ryzen 9 7940H
Cores / Threads	12 / 24+50%	8 / 16
Boost Clock	4.8 GHz	5.2 GHz+8%
Base Clock	3.7 GHz	4 GHz+8%
L3 Cache	64 MB+300%	16 MB (total)
L2 Cache	512K (per core)	1 MB (per core)+100%
Process	7 nm, 12 nm	4 nm-43%
Architecture	Vermeer (Zen3) (2020−2022)	Phoenix (2023−2024)
PassMark	38,955+34%	29,151
Cinebench R23 Multi	21,000+22%	17,200
Geekbench 6 Single	2,174	2,646+22%
Geekbench 6 Multi	11,888	13,495+14%

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Memory & Platform

The Ryzen 9 5900X uses the AM4 socket (PCIe 4.0), while the Ryzen 9 7940H uses FP8 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Ryzen 9 5900X versus DDR5-5600 on the Ryzen 9 7940H — the Ryzen 9 7940H supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 9 7940H supports up to 256 GB of RAM compared to 128 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 24 (Ryzen 9 5900X) vs 20 (Ryzen 9 7940H) — 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 FP7,FP7r2,FP8 (Ryzen 9 7940H).

Feature	Ryzen 9 5900X	Ryzen 9 7940H
Socket	AM4	FP8
PCIe Generation	PCIe 4.0	PCIe 4.0
Max RAM Speed	DDR4-3200	DDR5-5600+25%
Max RAM Capacity	128 GB	256 GB+100%
RAM Channels	2	2
ECC Support	Yes	Yes
PCIe Lanes	24+20%	20

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Only the Ryzen 9 7940H supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V (Ryzen 9 5900X) vs AMD-V, SVM (Ryzen 9 7940H). The Ryzen 9 7940H includes integrated graphics (Radeon 780M), while the Ryzen 9 5900X requires a dedicated GPU. Primary use case: Ryzen 9 5900X targets Workstation, Ryzen 9 7940H targets High-performance Gaming Laptop. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K; Ryzen 9 7940H rivals Core i9-13900H.