Ryzen 9 7945HX 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 7945HX 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 7945HX 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 7945HX

2023

Why buy it

✅+4.6% higher Cinebench R23 multi-core.
✅Draws 55W instead of 120W, a 65W reduction.
✅16.7% more PCIe lanes (28 vs 24) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Laptop Integrated), unlike Ryzen 9 9900X.

Trade-offs

❌Lower Geekbench single-core performance for gaming (2,774 vs 3,401).

Ryzen 9 9900X

2024

Why buy it

✅+22.6% higher Geekbench single-core performance for gaming and desktop responsiveness.

Trade-offs

❌Lower Cinebench R23 multi-core (33,003 vs 34,521).
❌Launch MSRP is still $499 MSRP, while Ryzen 9 7945HX mostly shows up through inconsistent older-market listings.
❌118.2% higher power demand at 120W vs 55W.
❌No boxed cooler included, unlike Ryzen 9 7945HX.

Quick Answers

So, is Ryzen 9 9900X better than Ryzen 9 7945HX?

It depends on what you want from the system. For gaming, Ryzen 9 9900X is ahead with a 2.1% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Ryzen 9 7945HX pulls ahead with 4.6% 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 7945HX is the stronger fit. You are getting 4.6% better Cinebench R23 multi-core, backed by 16 cores and 32 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 $499 MSRP versus unclear MSRP, and it still gives you a 2.1% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Ryzen 9 7945HX is still stronger for heavier multi-core work with 4.6% better Cinebench R23 multi-core. It is also 100.0% better value on MSRP (109.3 vs 0.0 PassMark/$), 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 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2023). That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Ryzen 9 7945HX vs Ryzen 9 9900X Technical Specifications

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

Ryzen 9 7945HX

The Ryzen 9 7945HX is manufactured by AMD. It was released in 2023-03-12. It is based on the Dragon Range-HX (Zen 4) (2023−2024) architecture. It features 16 cores and 32 threads. Base frequency is 2.5 GHz, with boost up to 5.4 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on CCD = 5 nm, I/O = 6 nm process technology. Socket: FL1. Thermal design power (TDP): 55 Watt. Memory support: DDR5. Passmark benchmark score: 54,425 points. Launch price was $700.

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 7945HX packs 16 cores / 32 threads, while the Ryzen 9 9900X offers 12 cores / 24 threads — the Ryzen 9 7945HX has 4 more cores. Boost clocks reach 5.4 GHz on the Ryzen 9 7945HX versus 5.6 GHz on the Ryzen 9 9900X — a 3.6% clock advantage for the Ryzen 9 9900X (base: 2.5 GHz vs 4.4 GHz). The Ryzen 9 7945HX uses the Dragon Range-HX (Zen 4) (2023−2024) architecture (CCD = 5 nm, I/O = 6 nm), while the Ryzen 9 9900X uses Granite Ridge (2024−2025) (4 nm). In PassMark, the Ryzen 9 7945HX scores 54,425 against the Ryzen 9 9900X's 54,530 — a 0.2% lead for the Ryzen 9 9900X. Cinebench R23 multi-core: 34,521 vs 33,003 (4.5% advantage for the Ryzen 9 7945HX). Geekbench 6 single-core — the metric most relevant to gaming — records 2,774 vs 3,401, a 20.3% lead for the Ryzen 9 9900X that directly translates to higher frame rates. Multi-core Geekbench: 16,214 vs 19,756 (19.7% advantage for the Ryzen 9 9900X). Both processors carry 64 MB (total) of L3 cache.

Feature	Ryzen 9 7945HX	Ryzen 9 9900X
Cores / Threads	16 / 32+33%	12 / 24
Boost Clock	5.4 GHz	5.6 GHz+4%
Base Clock	2.5 GHz	4.4 GHz+76%
L3 Cache	64 MB (total)	64 MB (total)
L2 Cache	1 MB (per core)	1 MB (per core)
Process	CCD = 5 nm, I/O = 6 nm	4 nm-20%
Architecture	Dragon Range-HX (Zen 4) (2023−2024)	Granite Ridge (2024−2025)
PassMark	54,425	54,530
Cinebench R23 Multi	34,521+5%	33,003
Geekbench 6 Single	2,774	3,401+23%
Geekbench 6 Multi	16,214	19,756+22%

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Memory & Platform

The Ryzen 9 7945HX 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 DDR5-5200 on the Ryzen 9 7945HX 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 64 GB — 300% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 28 (Ryzen 9 7945HX) vs 24 (Ryzen 9 9900X) — the Ryzen 9 7945HX offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: FL1 (Ryzen 9 7945HX) and A620,B650,X670,X870 (Ryzen 9 9900X).

Feature	Ryzen 9 7945HX	Ryzen 9 9900X
Socket	FL1	AM5
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	DDR5-5200	DDR5-5600+8%
Max RAM Capacity	64 GB	256 GB+300%
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. Both support AMD-V virtualization. Both include integrated graphics — Radeon 610M (Ryzen 9 7945HX) and Radeon 610M (Ryzen 9 9900X) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Ryzen 9 7945HX targets Extreme Gaming / Mobile Workstation. Direct competitor: Ryzen 9 7945HX rivals Core i9-14900HX.

Feature	Ryzen 9 7945HX	Ryzen 9 9900X
Integrated GPU	Yes	Yes
IGPU Model	Radeon 610M	Radeon 610M
Unlocked	Yes	Yes
AVX-512	Yes	Yes
Virtualization	AMD-V	AMD-V
Target Use	Extreme Gaming / Mobile Workstation	—