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 9955HX

2025

Why buy it

✅+69.4% higher Geekbench single-core performance for gaming and desktop responsiveness.
✅Draws 55W instead of 270W, a 215W reduction.
✅Integrated graphics onboard with Radeon 610M, while Xeon w7-3455 needs a discrete GPU.

Trade-offs

❌Less compelling for workstation-style loads than Xeon w7-3455, which brings 24 cores / 48 threads and 112 PCIe lanes.

Xeon w7-3455

2023

Why buy it

✅Better for workstations and heavier parallel workloads: 24 cores / 48 threads, plus 112 PCIe lanes vs 28.
✅300% more PCIe lanes (112 vs 28) for storage and expansion-heavy builds.

Trade-offs

❌Lower Geekbench single-core performance for gaming (1,900 vs 3,219).
❌Lower Geekbench multi-core (1,898 vs 19,563).
❌Launch MSRP is still $2,489 MSRP, while Ryzen 9 9955HX mostly shows up through inconsistent older-market listings.
❌390.9% higher power demand at 270W vs 55W.
❌No integrated graphics, while Ryzen 9 9955HX can still boot and troubleshoot without a discrete GPU.

Ryzen 9 9955HX

2025

Xeon w7-3455

2023

Why buy it

✅+69.4% higher Geekbench single-core performance for gaming and desktop responsiveness.
✅Draws 55W instead of 270W, a 215W reduction.
✅Integrated graphics onboard with Radeon 610M, while Xeon w7-3455 needs a discrete GPU.

Why buy it

✅Better for workstations and heavier parallel workloads: 24 cores / 48 threads, plus 112 PCIe lanes vs 28.
✅300% more PCIe lanes (112 vs 28) for storage and expansion-heavy builds.

Trade-offs

❌Less compelling for workstation-style loads than Xeon w7-3455, which brings 24 cores / 48 threads and 112 PCIe lanes.

Trade-offs

❌Lower Geekbench single-core performance for gaming (1,900 vs 3,219).
❌Lower Geekbench multi-core (1,898 vs 19,563).
❌Launch MSRP is still $2,489 MSRP, while Ryzen 9 9955HX mostly shows up through inconsistent older-market listings.
❌390.9% higher power demand at 270W vs 55W.
❌No integrated graphics, while Ryzen 9 9955HX can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Ryzen 9 9955HX better than Xeon w7-3455?

Not in a simple one-size-fits-all way. Xeon w7-3455 makes more sense for workstation-style multi-core throughput, while Ryzen 9 9955HX is the better mainstream desktop choice for gaming, platform cost, and day-to-day practicality.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 9955HX is the better pick here. According to our tests, it delivers 1.4% 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 9955HX is the better fit. You are getting 930.7% better Geekbench multi-core, backed by 16 cores and 32 threads.

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

Ryzen 9 9955HX is still the faster CPU overall, but Xeon w7-3455 makes more sense if price matters more than absolute performance. Ryzen 9 9955HX is at an unclear MSRP at unclear MSRP versus $2,489 MSRP, and it gives you a 1.4% average FPS lead across 50 shared CPU game tests in our data. Xeon w7-3455 is also 100.0% better value on MSRP (22.1 vs 0.0 PassMark/$), 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 9 9955HX is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2025 vs 2023) and more multi-core headroom with 16 cores / 32 threads instead of 24/48. 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 9955HX Benchmark Check

Xeon w7-3455 Benchmark Check

Path of Exile 2

Preset	Ryzen 9 9955HX	Xeon w7-3455
1080p
low	284 FPS	311 FPS
medium	261 FPS	301 FPS
high	214 FPS	242 FPS
ultra	180 FPS	204 FPS
1440p
low	260 FPS	270 FPS
medium	217 FPS	233 FPS
high	167 FPS	175 FPS
ultra	147 FPS	154 FPS
4K
low	181 FPS	184 FPS
medium	151 FPS	157 FPS
high	115 FPS	118 FPS
ultra	102 FPS	106 FPS

Open Ryzen 9 9955HX Open Xeon w7-3455

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 9955HX	Xeon w7-3455
1080p
low	666 FPS	682 FPS
medium	577 FPS	593 FPS
high	433 FPS	482 FPS
ultra	369 FPS	427 FPS
1440p
low	564 FPS	551 FPS
medium	503 FPS	489 FPS
high	389 FPS	415 FPS
ultra	305 FPS	341 FPS
4K
low	318 FPS	324 FPS
medium	288 FPS	288 FPS
high	253 FPS	267 FPS
ultra	214 FPS	234 FPS

Open Ryzen 9 9955HX Open Xeon w7-3455

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 9955HX	Xeon w7-3455
1080p
low	848 FPS	1025 FPS
medium	678 FPS	1057 FPS
high	600 FPS	974 FPS
ultra	515 FPS	834 FPS
1440p
low	678 FPS	1002 FPS
medium	542 FPS	888 FPS
high	469 FPS	802 FPS
ultra	397 FPS	656 FPS
4K
low	482 FPS	600 FPS
medium	399 FPS	517 FPS
high	359 FPS	461 FPS
ultra	301 FPS	397 FPS

Open Ryzen 9 9955HX Open Xeon w7-3455

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 9955HX	Xeon w7-3455
1080p
low	1071 FPS	1291 FPS
medium	966 FPS	1015 FPS
high	843 FPS	982 FPS
ultra	759 FPS	850 FPS
1440p
low	840 FPS	1045 FPS
medium	746 FPS	906 FPS
high	651 FPS	782 FPS
ultra	564 FPS	656 FPS
4K
low	618 FPS	778 FPS
medium	553 FPS	679 FPS
high	487 FPS	583 FPS
ultra	420 FPS	437 FPS

Open Ryzen 9 9955HX Open Xeon w7-3455

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 9955HX and Xeon w7-3455

Ryzen 9 9955HX

The Ryzen 9 9955HX is manufactured by AMD. It was released in 2025-01-01. It is based on the Fire Range-HX (Zen 5) (2025) 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 4 nm process technology. Socket: FL1. Thermal design power (TDP): 55 Watt. Memory support: DDR5. Passmark benchmark score: 55,711 points. Launch price was $650.

Xeon w7-3455

The Xeon w7-3455 is manufactured by Intel. It was released in 15 February 2023 (2 years ago). It is based on the Sapphire Rapids (2023−2024) architecture. It features 24 cores and 48 threads. Base frequency is 2.5 GHz, with boost up to 4.8 GHz. L3 cache: 67.5 MB. L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 270 Watt. Memory support: DDR5-4800. Passmark benchmark score: 54,925 points. Launch price was $2,489.

⚡

Processing Power

The Ryzen 9 9955HX packs 16 cores / 32 threads, while the Xeon w7-3455 offers 24 cores / 48 threads — the Xeon w7-3455 has 8 more cores. Boost clocks reach 5.4 GHz on the Ryzen 9 9955HX versus 4.8 GHz on the Xeon w7-3455 — a 11.8% clock advantage for the Ryzen 9 9955HX (base: 2.5 GHz vs 2.5 GHz). The Ryzen 9 9955HX uses the Fire Range-HX (Zen 5) (2025) architecture (4 nm), while the Xeon w7-3455 uses Sapphire Rapids (2023−2024) (Intel 7 nm). In PassMark, the Ryzen 9 9955HX scores 55,711 against the Xeon w7-3455's 54,925 — a 1.4% lead for the Ryzen 9 9955HX. Geekbench 6 single-core — the metric most relevant to gaming — records 3,219 vs 1,900, a 51.5% lead for the Ryzen 9 9955HX that directly translates to higher frame rates. Multi-core Geekbench: 19,563 vs 1,898 (164.6% advantage for the Ryzen 9 9955HX). L3 cache: 64 MB (total) on the Ryzen 9 9955HX vs 67.5 MB on the Xeon w7-3455.

Feature	Ryzen 9 9955HX	Xeon w7-3455
Cores / Threads	16 / 32	24 / 48+50%
Boost Clock	5.4 GHz+13%	4.8 GHz
Base Clock	2.5 GHz	2.5 GHz
L3 Cache	64 MB (total)	67.5 MB+5%
L2 Cache	1 MB (per core)	2 MB (per core)+100%
Process	4 nm-43%	Intel 7 nm
Architecture	Fire Range-HX (Zen 5) (2025)	Sapphire Rapids (2023−2024)
PassMark	55,711+1%	54,925
Cinebench R23 Multi	38,010	—
Geekbench 6 Single	3,219+69%	1,900
Geekbench 6 Multi	19,563+931%	1,898

🧠

Memory & Platform

The Ryzen 9 9955HX uses the FL1 socket (PCIe 5.0), while the Xeon w7-3455 uses LGA4677 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR5-5600 memory speed. The Xeon w7-3455 supports up to 4096 GB of RAM compared to 96 GB — 190.8% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 9955HX) vs 8 (Xeon w7-3455). PCIe lanes: 28 (Ryzen 9 9955HX) vs 112 (Xeon w7-3455) — the Xeon w7-3455 offers 84 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD FL1 (Ryzen 9 9955HX) and Intel W790 (Xeon w7-3455).

Feature	Ryzen 9 9955HX	Xeon w7-3455
Socket	FL1	LGA4677
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	DDR5-5600	DDR5-4800
Max RAM Capacity	96 GB	4096 GB+4167%
RAM Channels	2	8+300%
ECC Support	Yes	Yes
PCIe Lanes	28	112+300%

🔧

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 true virtualization. The Ryzen 9 9955HX includes integrated graphics (Radeon 610M), while the Xeon w7-3455 requires a dedicated GPU. Direct competitor: Ryzen 9 9955HX rivals Core Ultra 9 275HX; Xeon w7-3455 rivals Threadripper PRO 7965WX.