Ryzen 9 7940HX vs Ryzen 9 9900X

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.

Ryzen 9 7940HX vs Ryzen 9 9900X FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Ryzen 9 7940HX vs Ryzen 9 9900X: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Ryzen 9 7940HX

2024

Why buy it

✅Draws 55W instead of 120W, a 65W reduction.
✅16.7% more PCIe lanes (28 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 9900X across 50 shared CPU benchmark tests.
❌Lower PassMark (53,628 vs 54,530).

Ryzen 9 9900X

2024

Why buy it

✅Better for gaming: +6.4% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌Launch MSRP is still $499 MSRP, while Ryzen 9 7940HX mostly shows up through inconsistent older-market listings.
❌118.2% higher power demand at 120W vs 55W.

Quick Answers

So, is Ryzen 9 9900X better than Ryzen 9 7940HX?

Yes. Ryzen 9 9900X is the better all-around CPU here. It gives you a 6.4% average FPS lead across 50 shared CPU game tests in our data and 1.7% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 9900X is the better pick. According to our tests, it delivers 6.4% 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 9900X is the stronger fit. You are getting 1.7% better PassMark, backed by 12 cores and 24 threads.

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

Ryzen 9 9900X is the better buy right now. Ryzen 9 9900X comes in at an unclear MSRP at $499 MSRP versus unclear MSRP, and it still gives you a 6.4% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (109.3 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Ryzen 9 9900X is the safer long-term CPU choice because it gives you more room to grow and a better platform outlook.

Ryzen 9 7940HX vs Ryzen 9 9900X Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

Ryzen 9 7940HX

The Ryzen 9 7940HX is manufactured by AMD. It was released in 2024-01-01. It is based on the Dragon Range-HX (Zen 4) (2023−2024) architecture. It features 16 cores and 32 threads. Base frequency is 2.4 GHz, with boost up to 5.2 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: FL1. Thermal design power (TDP): 55 Watt. Memory support: DDR5. Passmark benchmark score: 53,628 points. Launch price was $600.

Ryzen 9 9900X

The Ryzen 9 9900X is manufactured by AMD. It was released in 15 August 2024 (1 year ago). It is based on the Granite Ridge (2024−2025) architecture. It features 12 cores and 24 threads. Base frequency is 4.4 GHz, with boost up to 5.6 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5. Passmark benchmark score: 54,530 points. Launch price was $499.

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Processing Power

The Ryzen 9 7940HX packs 16 cores / 32 threads, while the Ryzen 9 9900X offers 12 cores / 24 threads — the Ryzen 9 7940HX has 4 more cores. Boost clocks reach 5.2 GHz on the Ryzen 9 7940HX versus 5.6 GHz on the Ryzen 9 9900X — a 7.4% clock advantage for the Ryzen 9 9900X (base: 2.4 GHz vs 4.4 GHz). The Ryzen 9 7940HX uses the Dragon Range-HX (Zen 4) (2023−2024) architecture (5 nm), while the Ryzen 9 9900X uses Granite Ridge (2024−2025) (4 nm). In PassMark, the Ryzen 9 7940HX scores 53,628 against the Ryzen 9 9900X's 54,530 — a 1.7% lead for the Ryzen 9 9900X. Both processors carry 64 MB (total) of L3 cache.

Feature	Ryzen 9 7940HX	Ryzen 9 9900X
Cores / Threads	16 / 32+33%	12 / 24
Boost Clock	5.2 GHz	5.6 GHz+8%
Base Clock	2.4 GHz	4.4 GHz+83%
L3 Cache	64 MB (total)	64 MB (total)
L2 Cache	1 MB (per core)	1 MB (per core)
Process	5 nm	4 nm-20%
Architecture	Dragon Range-HX (Zen 4) (2023−2024)	Granite Ridge (2024−2025)
PassMark	53,628	54,530+2%
Cinebench R23 Multi	—	33,003
Geekbench 6 Single	—	3,401
Geekbench 6 Multi	—	19,756

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Memory & Platform

The Ryzen 9 7940HX uses the FL1 socket (PCIe 5.0), while the Ryzen 9 9900X uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 5200 on the Ryzen 9 7940HX versus DDR5-5600 on the Ryzen 9 9900X — the Ryzen 9 9900X supports 7.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 9 9900X supports up to 256 GB of RAM compared to 128 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 28 (Ryzen 9 7940HX) vs 24 (Ryzen 9 9900X) — the Ryzen 9 7940HX offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: FL1 (Ryzen 9 7940HX) and A620,B650,X670,X870 (Ryzen 9 9900X).

Feature	Ryzen 9 7940HX	Ryzen 9 9900X
Socket	FL1	AM5
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	5200	DDR5-5600+8%
Max RAM Capacity	128 GB	256 GB+100%
RAM Channels	2	2
ECC Support	Yes	Yes
PCIe Lanes	28+17%	24

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Advanced Features

Both processors feature an unlocked multiplier for overclocking. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: VT-x, VT-d, AMD-V (Ryzen 9 7940HX) vs AMD-V (Ryzen 9 9900X). Both include integrated graphics — AMD Radeon 610M (Ryzen 9 7940HX) and Radeon 610M (Ryzen 9 9900X) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Direct competitor: Ryzen 9 7940HX rivals Core i9-13900HX.