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.

Core Ultra 7 255H

2025

Why buy it

✅Better for gaming: +35.6% higher average FPS across 4 shared CPU benchmark tests.
✅Draws 26W instead of 65W, a 39W reduction.
✅Newer platform on FCBGA2049 with DDR5 support instead of AM4 and DDR4.
✅16.7% more PCIe lanes (28 vs 24) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel Arc Graphics 140T, while Ryzen 9 3900 needs a discrete GPU.

Trade-offs

❌Smaller total L3 cache (24 MB vs 64 MB).
❌No boxed cooler included, unlike Ryzen 9 3900.

Ryzen 9 3900

2019

Why buy it

✅+166.7% larger total L3 cache (64 MB vs 24 MB).
✅Includes a boxed cooler (Wraith Prism), unlike Core Ultra 7 255H.

Trade-offs

❌Worse for gaming: lower average FPS than Core Ultra 7 255H across 4 shared CPU benchmark tests.
❌Lower Geekbench multi-core (10,983 vs 15,700).
❌Launch MSRP is still $499 MSRP, while Core Ultra 7 255H mostly shows up through inconsistent older-market listings.
❌150% higher power demand at 65W vs 26W.
❌Older platform position on AM4 with DDR4, while Core Ultra 7 255H moves to FCBGA2049 and DDR5.

Core Ultra 7 255H

2025

Ryzen 9 3900

2019

Why buy it

✅Better for gaming: +35.6% higher average FPS across 4 shared CPU benchmark tests.
✅Draws 26W instead of 65W, a 39W reduction.
✅Newer platform on FCBGA2049 with DDR5 support instead of AM4 and DDR4.
✅16.7% more PCIe lanes (28 vs 24) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel Arc Graphics 140T, while Ryzen 9 3900 needs a discrete GPU.

Why buy it

✅+166.7% larger total L3 cache (64 MB vs 24 MB).
✅Includes a boxed cooler (Wraith Prism), unlike Core Ultra 7 255H.

Trade-offs

❌Smaller total L3 cache (24 MB vs 64 MB).
❌No boxed cooler included, unlike Ryzen 9 3900.

Trade-offs

❌Worse for gaming: lower average FPS than Core Ultra 7 255H across 4 shared CPU benchmark tests.
❌Lower Geekbench multi-core (10,983 vs 15,700).
❌Launch MSRP is still $499 MSRP, while Core Ultra 7 255H mostly shows up through inconsistent older-market listings.
❌150% higher power demand at 65W vs 26W.
❌Older platform position on AM4 with DDR4, while Core Ultra 7 255H moves to FCBGA2049 and DDR5.

Quick Answers

So, is Core Ultra 7 255H better than Ryzen 9 3900?

Yes. Core Ultra 7 255H is the better overall CPU here. You are getting a 35.6% average FPS lead across 4 shared CPU game tests in our data, 42.9% better Geekbench multi-core, 1.1% 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, Core Ultra 7 255H is the better pick here. According to our tests, it delivers 35.6% more average FPS across 4 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Core Ultra 7 255H is the better fit. You are getting 42.9% better Geekbench multi-core, backed by 16 cores and 16 threads.

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

Core Ultra 7 255H is still the faster CPU overall, but Ryzen 9 3900 makes more sense if price matters more than absolute performance. Core Ultra 7 255H is at an unclear MSRP at unclear MSRP versus $499 MSRP, and it gives you a 35.6% average FPS lead across 4 shared CPU game tests in our data. Ryzen 9 3900 is also 100.0% better value on MSRP (61.3 vs 0.0 PassMark/$), which is why it is easier to justify for price-conscious builds on paper.

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

Core Ultra 7 255H is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2025 vs 2019), a healthier platform with FCBGA2049 and DDR5 instead of AM4, and more multi-core headroom with 16 cores / 16 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.

Core Ultra 7 255H Benchmark Check

Ryzen 9 3900 Benchmark Check

Path of Exile 2

Preset	Core Ultra 7 255H	Ryzen 9 3900
1080p
low	309 FPS	159 FPS
medium	278 FPS	130 FPS
high	232 FPS	111 FPS
ultra	199 FPS	92 FPS
1440p
low	251 FPS	144 FPS
medium	201 FPS	115 FPS
high	163 FPS	94 FPS
ultra	143 FPS	78 FPS
4K
low	173 FPS	78 FPS
medium	139 FPS	67 FPS
high	107 FPS	53 FPS
ultra	93 FPS	43 FPS

Open Core Ultra 7 255H Open Ryzen 9 3900

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core Ultra 7 255H	Ryzen 9 3900
1080p
low	773 FPS	534 FPS
medium	636 FPS	470 FPS
high	519 FPS	384 FPS
ultra	459 FPS	342 FPS
1440p
low	704 FPS	460 FPS
medium	567 FPS	411 FPS
high	466 FPS	347 FPS
ultra	389 FPS	289 FPS
4K
low	412 FPS	288 FPS
medium	340 FPS	261 FPS
high	314 FPS	238 FPS
ultra	270 FPS	213 FPS

Open Core Ultra 7 255H Open Ryzen 9 3900

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core Ultra 7 255H	Ryzen 9 3900
1080p
low	773 FPS	709 FPS
medium	773 FPS	589 FPS
high	773 FPS	536 FPS
ultra	662 FPS	472 FPS
1440p
low	773 FPS	541 FPS
medium	735 FPS	448 FPS
high	635 FPS	401 FPS
ultra	544 FPS	347 FPS
4K
low	642 FPS	394 FPS
medium	534 FPS	315 FPS
high	483 FPS	279 FPS
ultra	409 FPS	224 FPS

Open Core Ultra 7 255H Open Ryzen 9 3900

League of Legends

League of Legends

Valorant

Preset	Core Ultra 7 255H	Ryzen 9 3900
1080p
low	773 FPS	765 FPS
medium	773 FPS	765 FPS
high	773 FPS	711 FPS
ultra	773 FPS	638 FPS
1440p
low	773 FPS	725 FPS
medium	773 FPS	644 FPS
high	703 FPS	553 FPS
ultra	609 FPS	486 FPS
4K
low	612 FPS	516 FPS
medium	540 FPS	469 FPS
high	489 FPS	411 FPS
ultra	427 FPS	360 FPS

Open Core Ultra 7 255H Open Ryzen 9 3900

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core Ultra 7 255H and Ryzen 9 3900

Core Ultra 7 255H

The Core Ultra 7 255H is manufactured by Intel. It was released in 1 January 2025 (less than a year ago). It is based on the Arrow Lake-H (2025) architecture. It features 16 cores and 16 threads. Base frequency is 4.4 GHz, with boost up to 5.1 GHz. L3 cache: 24 MB. Built on 5 nm process technology. Socket: FCBGA2049. Thermal design power (TDP): 26 MB + 24 MB. Memory support: DDR5-6400. Passmark benchmark score: 30,932 points. Launch price was $514.

Ryzen 9 3900

The Ryzen 9 3900 is manufactured by AMD. It was released in 24 September 2019 (6 years ago). It is based on the Matisse (Zen 2) (2019−2020) architecture. It features 12 cores and 24 threads. Base frequency is 3.1 GHz, with boost up to 4.3 GHz. L3 cache: 64 MB. L2 cache: 512 kB (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: 30,588 points. Launch price was $499.

⚡

Processing Power

The Core Ultra 7 255H packs 16 cores / 16 threads, while the Ryzen 9 3900 offers 12 cores / 24 threads — the Core Ultra 7 255H has 4 more cores. Boost clocks reach 5.1 GHz on the Core Ultra 7 255H versus 4.3 GHz on the Ryzen 9 3900 — a 17% clock advantage for the Core Ultra 7 255H (base: 4.4 GHz vs 3.1 GHz). The Core Ultra 7 255H uses the Arrow Lake-H (2025) architecture (5 nm), while the Ryzen 9 3900 uses Matisse (Zen 2) (2019−2020) (7 nm, 12 nm). In PassMark, the Core Ultra 7 255H scores 30,932 against the Ryzen 9 3900's 30,588 — a 1.1% lead for the Core Ultra 7 255H. Geekbench 6 single-core — the metric most relevant to gaming — records 2,800 vs 1,713, a 48.2% lead for the Core Ultra 7 255H that directly translates to higher frame rates. Multi-core Geekbench: 15,700 vs 10,983 (35.4% advantage for the Core Ultra 7 255H). L3 cache: 24 MB on the Core Ultra 7 255H vs 64 MB on the Ryzen 9 3900.

Feature	Core Ultra 7 255H	Ryzen 9 3900
Cores / Threads	16 / 16+33%	12 / 24
Boost Clock	5.1 GHz+19%	4.3 GHz
Base Clock	4.4 GHz+42%	3.1 GHz
L3 Cache	24 MB	64 MB+167%
L2 Cache	—	512 kB (per core)
Process	5 nm-29%	7 nm, 12 nm
Architecture	Arrow Lake-H (2025)	Matisse (Zen 2) (2019−2020)
PassMark	30,932+1%	30,588
Cinebench R23 Multi	—	17,700
Geekbench 6 Single	2,800+63%	1,713
Geekbench 6 Multi	15,700+43%	10,983

🧠

Memory & Platform

The Core Ultra 7 255H uses the FCBGA2049 socket (PCIe 5.0), while the Ryzen 9 3900 uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-6400 on the Core Ultra 7 255H versus DDR4-3200 on the Ryzen 9 3900 — the Core Ultra 7 255H supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 128 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 28 (Core Ultra 7 255H) vs 24 (Ryzen 9 3900) — the Core Ultra 7 255H offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: HM870,WM880 (Core Ultra 7 255H) and X570,B550,X470,B450 (Ryzen 9 3900).

Feature	Core Ultra 7 255H	Ryzen 9 3900
Socket	FCBGA2049	AM4
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	DDR5-6400+25%	DDR4-3200
Max RAM Capacity	128 GB	128 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	28+17%	24

🔧

Advanced Features

Only the Ryzen 9 3900 has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x, VT-d (Core Ultra 7 255H) vs AMD-V (Ryzen 9 3900). The Core Ultra 7 255H includes integrated graphics (Intel Arc Graphics 140T), while the Ryzen 9 3900 requires a dedicated GPU. Primary use case: Core Ultra 7 255H targets High-End Laptop, Ryzen 9 3900 targets Workstation Desktop (low power). Direct competitor: Ryzen 9 3900 rivals Core i9-9900.

Feature	Core Ultra 7 255H	Ryzen 9 3900
Integrated GPU	Yes	No
IGPU Model	Intel Arc Graphics 140T	—
Unlocked	No	Yes
AVX-512	No	No
Virtualization	VT-x, VT-d	AMD-V
Target Use	High-End Laptop	Workstation Desktop (low power)