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 7945HX

2023

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.
✅Includes a boxed cooler (Laptop Integrated), unlike Ryzen 9 9900X3D.

Trade-offs

❌No 3D V-Cache or similar L3 advantage, which matters in CPU-limited gaming (64 MB vs 128 MB).
❌Lower Geekbench multi-core (16,214 vs 26,000).

Ryzen 9 9900X3D

2025

Why buy it

✅Massive L3 cache advantage with 128 MB vs 64 MB, which is a real win in CPU-limited gaming.

Trade-offs

❌Launch MSRP is still $599 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.

Ryzen 9 7945HX

2023

Ryzen 9 9900X3D

2025

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.
✅Includes a boxed cooler (Laptop Integrated), unlike Ryzen 9 9900X3D.

Why buy it

✅Massive L3 cache advantage with 128 MB vs 64 MB, which is a real win in CPU-limited gaming.

Trade-offs

❌No 3D V-Cache or similar L3 advantage, which matters in CPU-limited gaming (64 MB vs 128 MB).
❌Lower Geekbench multi-core (16,214 vs 26,000).

Trade-offs

❌Launch MSRP is still $599 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 9900X3D better than Ryzen 9 7945HX?

Yes. Ryzen 9 9900X3D is the better overall CPU here. You are getting a 2.1% average FPS lead across 50 shared CPU game tests in our data, 60.4% better Geekbench multi-core, 3.4% 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 9900X3D is the better pick here. According to our tests, it delivers 2.1% more average FPS across 50 shared CPU game tests. It also has a big cache advantage at 128 MB vs 64 MB.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 9900X3D is the better fit. You are getting 60.4% better Geekbench multi-core, backed by 12 cores and 24 threads. It also carries the larger cache pool with 100% larger total L3 cache (128 MB vs 64 MB).

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

Ryzen 9 9900X3D is the smarter buy today. Ryzen 9 9900X3D is at an unclear MSRP at $599 MSRP versus unclear MSRP, and it gives you a 2.1% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (94.0 vs 0.0 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper.

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

Ryzen 9 9900X3D is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2025 vs 2023), 3D V-Cache and a much larger 128 MB L3 cache instead of 64 MB, and more multi-core headroom with 12 cores / 24 threads instead of 16/32. 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 7945HX Benchmark Check

Ryzen 9 9900X3D Benchmark Check

Path of Exile 2

Preset	Ryzen 9 7945HX	Ryzen 9 9900X3D
1080p
low	301 FPS	281 FPS
medium	276 FPS	257 FPS
high	224 FPS	220 FPS
ultra	190 FPS	191 FPS
1440p
low	271 FPS	265 FPS
medium	226 FPS	218 FPS
high	172 FPS	173 FPS
ultra	153 FPS	155 FPS
4K
low	189 FPS	183 FPS
medium	157 FPS	150 FPS
high	119 FPS	113 FPS
ultra	107 FPS	100 FPS

Open Ryzen 9 7945HX Open Ryzen 9 9900X3D

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 7945HX	Ryzen 9 9900X3D
1080p
low	744 FPS	824 FPS
medium	620 FPS	670 FPS
high	466 FPS	497 FPS
ultra	397 FPS	410 FPS
1440p
low	630 FPS	662 FPS
medium	541 FPS	562 FPS
high	419 FPS	433 FPS
ultra	328 FPS	335 FPS
4K
low	355 FPS	369 FPS
medium	309 FPS	317 FPS
high	272 FPS	278 FPS
ultra	230 FPS	233 FPS

Open Ryzen 9 7945HX Open Ryzen 9 9900X3D

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 7945HX	Ryzen 9 9900X3D
1080p
low	893 FPS	890 FPS
medium	712 FPS	722 FPS
high	618 FPS	649 FPS
ultra	533 FPS	559 FPS
1440p
low	718 FPS	716 FPS
medium	572 FPS	582 FPS
high	487 FPS	511 FPS
ultra	418 FPS	434 FPS
4K
low	513 FPS	510 FPS
medium	427 FPS	420 FPS
high	383 FPS	377 FPS
ultra	323 FPS	316 FPS

Open Ryzen 9 7945HX Open Ryzen 9 9900X3D

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 7945HX	Ryzen 9 9900X3D
1080p
low	1129 FPS	1116 FPS
medium	1006 FPS	1001 FPS
high	873 FPS	878 FPS
ultra	768 FPS	792 FPS
1440p
low	900 FPS	872 FPS
medium	790 FPS	766 FPS
high	689 FPS	673 FPS
ultra	584 FPS	584 FPS
4K
low	648 FPS	637 FPS
medium	578 FPS	566 FPS
high	510 FPS	503 FPS
ultra	436 FPS	435 FPS

Open Ryzen 9 7945HX Open Ryzen 9 9900X3D

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 7945HX and Ryzen 9 9900X3D

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 9900X3D

The Ryzen 9 9900X3D is manufactured by AMD. It was released in 6 January 2025 (less than a 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 5.5 GHz. L3 cache: 128 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: 56,301 points. Launch price was $599.

⚡

Processing Power

The Ryzen 9 7945HX packs 16 cores / 32 threads, while the Ryzen 9 9900X3D 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 5.5 GHz on the Ryzen 9 9900X3D — a 1.8% clock advantage for the Ryzen 9 9900X3D (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 9900X3D uses Granite Ridge (2024−2025) (4 nm). In PassMark, the Ryzen 9 7945HX scores 54,425 against the Ryzen 9 9900X3D's 56,301 — a 3.4% lead for the Ryzen 9 9900X3D. Geekbench 6 single-core — the metric most relevant to gaming — records 2,774 vs 3,400, a 20.3% lead for the Ryzen 9 9900X3D that directly translates to higher frame rates. Multi-core Geekbench: 16,214 vs 26,000 (46.4% advantage for the Ryzen 9 9900X3D). L3 cache: 64 MB (total) on the Ryzen 9 7945HX vs 128 MB (total) on the Ryzen 9 9900X3D.

Feature	Ryzen 9 7945HX	Ryzen 9 9900X3D
Cores / Threads	16 / 32+33%	12 / 24
Boost Clock	5.4 GHz	5.5 GHz+2%
Base Clock	2.5 GHz	4.4 GHz+76%
L3 Cache	64 MB (total)	128 MB (total)+100%
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	56,301+3%
Cinebench R23 Multi	34,521	—
Geekbench 6 Single	2,774	3,400+23%
Geekbench 6 Multi	16,214	26,000+60%

🧠

Memory & Platform

The Ryzen 9 7945HX uses the FL1 socket (PCIe 5.0), while the Ryzen 9 9900X3D uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR5-5200 memory speed. The Ryzen 9 9900X3D supports up to 192 GB of RAM compared to 64 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 28 (Ryzen 9 7945HX) vs 24 (Ryzen 9 9900X3D) — the Ryzen 9 7945HX offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: FL1 (Ryzen 9 7945HX) and X670,X670E,X870,X870E (Ryzen 9 9900X3D).

Feature	Ryzen 9 7945HX	Ryzen 9 9900X3D
Socket	FL1	AM5
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	DDR5-5200	DDR5-5600
Max RAM Capacity	64 GB	192 GB+200%
RAM Channels	2	2
ECC Support	Yes	Yes
PCIe Lanes	28+17%	24

🔧

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 AMD Radeon Graphics (2 Cores) (Ryzen 9 9900X3D) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Ryzen 9 7945HX targets Extreme Gaming / Mobile Workstation, Ryzen 9 9900X3D targets High End Gaming/Creation. Direct competitor: Ryzen 9 7945HX rivals Core i9-14900HX; Ryzen 9 9900X3D rivals Core Ultra 9 285K.

Feature	Ryzen 9 7945HX	Ryzen 9 9900X3D
Integrated GPU	Yes	Yes
IGPU Model	Radeon 610M	AMD Radeon Graphics (2 Cores)
Unlocked	Yes	Yes
AVX-512	Yes	Yes
Virtualization	AMD-V	AMD-V
Target Use	Extreme Gaming / Mobile Workstation	High End Gaming/Creation