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 5900

2021

Why buy it

✅Better for gaming: +22.5% higher average FPS across 50 shared CPU benchmark tests.
✅+300% larger total L3 cache (64 MB vs 16 MB).
✅50% more PCIe lanes (24 vs 16) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (33,912 vs 34,585).
❌Launch MSRP is still $549 MSRP, while Ryzen AI 9 HX 375 mostly shows up through inconsistent older-market listings.
❌132.1% higher power demand at 65W vs 28W.
❌Older platform position on AM4 with DDR4, while Ryzen AI 9 HX 375 moves to FP8 and DDR5.
❌No integrated graphics, while Ryzen AI 9 HX 375 can still boot and troubleshoot without a discrete GPU.

Ryzen AI 9 HX 375

2024

Why buy it

✅+2% higher PassMark.
✅Draws 28W instead of 65W, a 37W reduction.
✅Newer platform on FP8 with DDR5 support instead of AM4 and DDR4.
✅Integrated graphics onboard with Radeon 890M, while Ryzen 9 5900 needs a discrete GPU.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900 across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (16 MB vs 64 MB).

Ryzen 9 5900

2021

Ryzen AI 9 HX 375

2024

Why buy it

✅Better for gaming: +22.5% higher average FPS across 50 shared CPU benchmark tests.
✅+300% larger total L3 cache (64 MB vs 16 MB).
✅50% more PCIe lanes (24 vs 16) for storage and expansion-heavy builds.

Why buy it

✅+2% higher PassMark.
✅Draws 28W instead of 65W, a 37W reduction.
✅Newer platform on FP8 with DDR5 support instead of AM4 and DDR4.
✅Integrated graphics onboard with Radeon 890M, while Ryzen 9 5900 needs a discrete GPU.

Trade-offs

❌Lower PassMark (33,912 vs 34,585).
❌Launch MSRP is still $549 MSRP, while Ryzen AI 9 HX 375 mostly shows up through inconsistent older-market listings.
❌132.1% higher power demand at 65W vs 28W.
❌Older platform position on AM4 with DDR4, while Ryzen AI 9 HX 375 moves to FP8 and DDR5.
❌No integrated graphics, while Ryzen AI 9 HX 375 can still boot and troubleshoot without a discrete GPU.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900 across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (16 MB vs 64 MB).

Quick Answers

So, is Ryzen AI 9 HX 375 better than Ryzen 9 5900?

It depends on what matters more to you. For gaming, Ryzen 9 5900 is ahead with a 22.5% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Ryzen AI 9 HX 375 pulls ahead with 2% better PassMark. Ryzen 9 5900 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 AI 9 HX 375 is the better fit. You are getting 2% better PassMark, backed by 12 cores and 24 threads.

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

Ryzen AI 9 HX 375 is still the faster CPU overall, but Ryzen 9 5900 makes more sense if price matters more than absolute performance. Ryzen AI 9 HX 375 is at an unclear MSRP at unclear MSRP versus $549 MSRP, and it gives you 2% better PassMark. The trade-off is that Ryzen 9 5900 is still the better pure gaming CPU with a 22.5% average FPS lead across 50 shared CPU game tests in our data. Ryzen 9 5900 is also 100.0% better value on MSRP (61.8 vs 0.0 PassMark/$), 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 AI 9 HX 375 is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2021), a healthier platform with FP8 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 5900 Benchmark Check

Ryzen AI 9 HX 375 Benchmark Check

Path of Exile 2

Preset	Ryzen 9 5900	Ryzen AI 9 HX 375
1080p
low	164 FPS	245 FPS
medium	135 FPS	230 FPS
high	117 FPS	192 FPS
ultra	98 FPS	165 FPS
1440p
low	150 FPS	216 FPS
medium	120 FPS	184 FPS
high	99 FPS	148 FPS
ultra	83 FPS	130 FPS
4K
low	84 FPS	150 FPS
medium	72 FPS	128 FPS
high	58 FPS	98 FPS
ultra	47 FPS	86 FPS

Open Ryzen 9 5900 Open Ryzen AI 9 HX 375

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 5900	Ryzen AI 9 HX 375
1080p
low	734 FPS	262 FPS
medium	625 FPS	220 FPS
high	495 FPS	194 FPS
ultra	437 FPS	173 FPS
1440p
low	608 FPS	232 FPS
medium	529 FPS	203 FPS
high	440 FPS	178 FPS
ultra	361 FPS	151 FPS
4K
low	358 FPS	154 FPS
medium	314 FPS	140 FPS
high	286 FPS	135 FPS
ultra	253 FPS	115 FPS

Open Ryzen 9 5900 Open Ryzen AI 9 HX 375

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 5900	Ryzen AI 9 HX 375
1080p
low	805 FPS	738 FPS
medium	627 FPS	587 FPS
high	543 FPS	508 FPS
ultra	449 FPS	429 FPS
1440p
low	690 FPS	661 FPS
medium	543 FPS	533 FPS
high	469 FPS	455 FPS
ultra	393 FPS	388 FPS
4K
low	490 FPS	482 FPS
medium	404 FPS	403 FPS
high	359 FPS	359 FPS
ultra	296 FPS	301 FPS

Open Ryzen 9 5900 Open Ryzen AI 9 HX 375

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 5900	Ryzen AI 9 HX 375
1080p
low	848 FPS	865 FPS
medium	848 FPS	809 FPS
high	836 FPS	694 FPS
ultra	744 FPS	625 FPS
1440p
low	848 FPS	757 FPS
medium	760 FPS	680 FPS
high	665 FPS	583 FPS
ultra	570 FPS	515 FPS
4K
low	626 FPS	518 FPS
medium	559 FPS	473 FPS
high	494 FPS	420 FPS
ultra	426 FPS	369 FPS

Open Ryzen 9 5900 Open Ryzen AI 9 HX 375

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 5900 and Ryzen AI 9 HX 375

Ryzen 9 5900

The Ryzen 9 5900 is manufactured by AMD. It was released in 12 January 2021 (4 years ago). It is based on the Vermeer (2020−2025) architecture. It features 12 cores and 24 threads. Base frequency is 3 GHz, with boost up to 4.7 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4-3200. Passmark benchmark score: 33,912 points. Launch price was $499.

Ryzen AI 9 HX 375

The Ryzen AI 9 HX 375 is manufactured by AMD. It was released in Julho 2024 (1 year ago). It is based on the Strix Point-HX (Zen 5) (2024) architecture. It features 12 cores and 24 threads. Base frequency is 2 GHz, with boost up to 5.1 GHz. L3 cache: 16 MB. L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FP8. Thermal design power (TDP): 28 Watt. Memory support: DDR5. Passmark benchmark score: 34,585 points. Launch price was $499.

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Processing Power

Both the Ryzen 9 5900 and Ryzen AI 9 HX 375 share an identical 12-core/24-thread configuration. Boost clocks reach 4.7 GHz on the Ryzen 9 5900 versus 5.1 GHz on the Ryzen AI 9 HX 375 — a 8.2% clock advantage for the Ryzen AI 9 HX 375 (base: 3 GHz vs 2 GHz). The Ryzen 9 5900 uses the Vermeer (2020−2025) architecture (7 nm, 12 nm), while the Ryzen AI 9 HX 375 uses Strix Point-HX (Zen 5) (2024) (4 nm). In PassMark, the Ryzen 9 5900 scores 33,912 against the Ryzen AI 9 HX 375's 34,585 — a 2% lead for the Ryzen AI 9 HX 375. L3 cache: 64 MB on the Ryzen 9 5900 vs 16 MB on the Ryzen AI 9 HX 375.

Feature	Ryzen 9 5900	Ryzen AI 9 HX 375
Cores / Threads	12 / 24	12 / 24
Boost Clock	4.7 GHz	5.1 GHz+9%
Base Clock	3 GHz+50%	2 GHz
L3 Cache	64 MB+300%	16 MB
L2 Cache	512K (per core)	1 MB (per core)+100%
Process	7 nm, 12 nm	4 nm-43%
Architecture	Vermeer (2020−2025)	Strix Point-HX (Zen 5) (2024)
PassMark	33,912	34,585+2%
Cinebench R23 Multi	—	22,246
Geekbench 6 Single	—	2,865
Geekbench 6 Multi	—	15,100

🧠

Memory & Platform

The Ryzen 9 5900 uses the AM4 socket (PCIe 4.0), while the Ryzen AI 9 HX 375 uses FP8 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Ryzen 9 5900 versus LPDDR5x-8000, DDR5-5600 on the Ryzen AI 9 HX 375 — the Ryzen AI 9 HX 375 supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen AI 9 HX 375 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 5900) vs 16 (Ryzen AI 9 HX 375) — the Ryzen 9 5900 offers 8 more lanes for additional GPUs or NVMe drives.

Feature	Ryzen 9 5900	Ryzen AI 9 HX 375
Socket	AM4	FP8
PCIe Generation	PCIe 4.0	PCIe 4.0
Max RAM Speed	DDR4-3200	LPDDR5x-8000, DDR5-5600+25%
Max RAM Capacity	128 GB	256 GB+100%
RAM Channels	2	2
ECC Support	Yes	No
PCIe Lanes	24+50%	16

🔧

Advanced Features

Only the Ryzen 9 5900 has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Ryzen AI 9 HX 375 supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V (Ryzen 9 5900) vs AMD-V, AMD-Vi (Ryzen AI 9 HX 375). The Ryzen AI 9 HX 375 includes integrated graphics (Radeon 890M), while the Ryzen 9 5900 requires a dedicated GPU. Primary use case: Ryzen 9 5900 targets OEM Gaming, Ryzen AI 9 HX 375 targets AI-Notebook. Direct competitor: Ryzen AI 9 HX 375 rivals Ryzen AI 9 HX 370.

Feature	Ryzen 9 5900	Ryzen AI 9 HX 375
Integrated GPU	No	Yes
IGPU Model	—	Radeon 890M
Unlocked	Yes	No
AVX-512	No	Yes
Virtualization	AMD-V	AMD-V, AMD-Vi
Target Use	OEM Gaming	AI-Notebook

💰

Value Analysis

The Ryzen 9 5900 launched at $549 MSRP, while the Ryzen AI 9 HX 375 debuted at $0. On MSRP ($549 vs $0), the Ryzen AI 9 HX 375 is $549 cheaper.