Ryzen 9 5900X vs Xeon W-10855M

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 5900X

2020

Why buy it

✅Better for gaming: +62.4% higher average FPS across 2 shared CPU benchmark tests.
✅+433.3% larger total L3 cache (64 MB vs 12 MB).
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark per dollar, at 71.0 vs 103.8 PassMark/$ ($549 MSRP vs $118 MSRP).
❌6900% higher power demand at 105W vs 1.5W.

Xeon W-10855M

2020

Why buy it

✅Costs $431 less on MSRP ($118 MSRP vs $549 MSRP).
✅Delivers 46.3% more PassMark for each dollar spent, at 103.8 vs 71.0 PassMark/$ ($118 MSRP vs $549 MSRP).
✅Draws 2W instead of 105W, a 104W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 2 shared CPU benchmark tests.
❌Lower PassMark (12,249 vs 38,955).
❌Smaller total L3 cache (12 MB vs 64 MB).

Ryzen 9 5900X

2020

Xeon W-10855M

2020

Why buy it

✅Better for gaming: +62.4% higher average FPS across 2 shared CPU benchmark tests.
✅+433.3% larger total L3 cache (64 MB vs 12 MB).
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Why buy it

✅Costs $431 less on MSRP ($118 MSRP vs $549 MSRP).
✅Delivers 46.3% more PassMark for each dollar spent, at 103.8 vs 71.0 PassMark/$ ($118 MSRP vs $549 MSRP).
✅Draws 2W instead of 105W, a 104W reduction.

Trade-offs

❌Lower PassMark per dollar, at 71.0 vs 103.8 PassMark/$ ($549 MSRP vs $118 MSRP).
❌6900% higher power demand at 105W vs 1.5W.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 2 shared CPU benchmark tests.
❌Lower PassMark (12,249 vs 38,955).
❌Smaller total L3 cache (12 MB vs 64 MB).

Quick Answers

So, is Ryzen 9 5900X better than Xeon W-10855M?

Not in a simple one-size-fits-all way. Xeon W-10855M makes more sense for workstation-style multi-core throughput, while Ryzen 9 5900X 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 5900X is the better pick here. According to our tests, it delivers 62.4% more average FPS across 2 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 5900X is the better fit. You are getting 218% better PassMark, backed by 12 cores and 24 threads. It also carries the larger cache pool with 433.3% larger total L3 cache (64 MB vs 12 MB).

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

Ryzen 9 5900X is the smarter buy by a wide margin for any fresh desktop build. Ryzen 9 5900X is 365.3% more expensive on MSRP at $549 MSRP versus $118 MSRP, and it gives you a 62.4% average FPS lead across 2 shared CPU game tests in our data. Xeon W-10855M only looks good on raw value math because it is a cheap legacy laptop CPU, not because it is a serious desktop gaming option. It simply cannot keep up with modern games, especially when the gap is already 62.4% in the shared gaming data.

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

Ryzen 9 5900X is the more future-proof choice for 2026 and beyond. You are getting 433.3% larger total L3 cache (64 MB vs 12 MB) and more multi-core headroom with 12 cores / 24 threads instead of 6/12. That extra compute headroom should age better as games, background tasks, and creator workloads get heavier.

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 5900X Benchmark Check

Xeon W-10855M Benchmark Check

Path of Exile 2

Preset	Ryzen 9 5900X	Xeon W-10855M
1080p
low	323 FPS	275 FPS
medium	291 FPS	243 FPS
high	243 FPS	204 FPS
ultra	193 FPS	175 FPS
1440p
low	307 FPS	235 FPS
medium	248 FPS	187 FPS
high	192 FPS	153 FPS
ultra	157 FPS	135 FPS
4K
low	193 FPS	163 FPS
medium	156 FPS	132 FPS
high	115 FPS	102 FPS
ultra	103 FPS	89 FPS

Open Ryzen 9 5900X Open Xeon W-10855M

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 5900X	Xeon W-10855M
1080p
low	772 FPS	306 FPS
medium	647 FPS	280 FPS
high	508 FPS	254 FPS
ultra	450 FPS	221 FPS
1440p
low	619 FPS	300 FPS
medium	536 FPS	245 FPS
high	443 FPS	225 FPS
ultra	364 FPS	194 FPS
4K
low	365 FPS	251 FPS
medium	318 FPS	207 FPS
high	289 FPS	191 FPS
ultra	255 FPS	159 FPS

Open Ryzen 9 5900X Open Xeon W-10855M

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 5900X	Xeon W-10855M
1080p
low	832 FPS	306 FPS
medium	645 FPS	306 FPS
high	558 FPS	306 FPS
ultra	459 FPS	306 FPS
1440p
low	721 FPS	306 FPS
medium	565 FPS	306 FPS
high	488 FPS	306 FPS
ultra	407 FPS	306 FPS
4K
low	511 FPS	306 FPS
medium	421 FPS	306 FPS
high	374 FPS	306 FPS
ultra	308 FPS	294 FPS

Open Ryzen 9 5900X Open Xeon W-10855M

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 5900X	Xeon W-10855M
1080p
low	974 FPS	306 FPS
medium	974 FPS	306 FPS
high	934 FPS	306 FPS
ultra	826 FPS	306 FPS
1440p
low	959 FPS	306 FPS
medium	843 FPS	306 FPS
high	726 FPS	306 FPS
ultra	617 FPS	306 FPS
4K
low	694 FPS	306 FPS
medium	621 FPS	306 FPS
high	541 FPS	306 FPS
ultra	437 FPS	306 FPS

Open Ryzen 9 5900X Open Xeon W-10855M

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 5900X and Xeon W-10855M

Ryzen 9 5900X

The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4-3200. Passmark benchmark score: 38,955 points. Launch price was $549.

Xeon W-10855M

The Xeon W-10855M is manufactured by Intel. It was released in 2015-01-01. It is based on the Comet Lake-H (2020) architecture. It features 6 cores and 12 threads. Base frequency is 2.8 GHz, with boost up to 4.9 GHz. L3 cache: 12 MB. L2 cache: 1.5 MB. Built on 14 nm process technology. Socket: BGA1440. Thermal design power (TDP): 45 Watt. Memory support: DDR4. Passmark benchmark score: 12,249 points. Launch price was $800.

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Processing Power

The Ryzen 9 5900X packs 12 cores / 24 threads, while the Xeon W-10855M offers 6 cores / 12 threads — the Ryzen 9 5900X has 6 more cores. Boost clocks reach 4.8 GHz on the Ryzen 9 5900X versus 4.9 GHz on the Xeon W-10855M — a 2.1% clock advantage for the Xeon W-10855M (base: 3.7 GHz vs 2.8 GHz). The Ryzen 9 5900X uses the Vermeer (Zen3) (2020−2022) architecture (7 nm, 12 nm), while the Xeon W-10855M uses Comet Lake-H (2020) (14 nm). In PassMark, the Ryzen 9 5900X scores 38,955 against the Xeon W-10855M's 12,249 — a 104.3% lead for the Ryzen 9 5900X. L3 cache: 64 MB on the Ryzen 9 5900X vs 12 MB on the Xeon W-10855M.

Feature	Ryzen 9 5900X	Xeon W-10855M
Cores / Threads	12 / 24+100%	6 / 12
Boost Clock	4.8 GHz	4.9 GHz+2%
Base Clock	3.7 GHz+32%	2.8 GHz
L3 Cache	64 MB+433%	12 MB
L2 Cache	512K (per core)	1.5 MB+200%
Process	7 nm, 12 nm-50%	14 nm
Architecture	Vermeer (Zen3) (2020−2022)	Comet Lake-H (2020)
PassMark	38,955+218%	12,249
Cinebench R23 Multi	21,000	—
Geekbench 6 Single	2,174	—
Geekbench 6 Multi	11,888	—

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Memory & Platform

The Ryzen 9 5900X uses the AM4 socket (PCIe 4.0), while the Xeon W-10855M uses BGA1440 (PCIe 5.0) — making them incompatible on the same motherboard.

Feature	Ryzen 9 5900X	Xeon W-10855M
Socket	AM4	BGA1440
PCIe Generation	PCIe 4.0	PCIe 5.0+25%
Max RAM Speed	DDR4-3200	—
Max RAM Capacity	128 GB	—
RAM Channels	2	—
ECC Support	Yes	—
PCIe Lanes	24	—

🔧

Advanced Features

Virtualization: AMD-V (Ryzen 9 5900X) / not specified (Xeon W-10855M). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K.

Feature	Ryzen 9 5900X	Xeon W-10855M
Integrated GPU	No	—
Unlocked	Yes	—
AVX-512	No	—
Virtualization	AMD-V	—
Target Use	Workstation	—

💰

Value Analysis

The Ryzen 9 5900X launched at $549 MSRP, while the Xeon W-10855M debuted at $118. On MSRP ($549 vs $118), the Xeon W-10855M is $431 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 5900X delivers 71.0 pts/$ vs 103.8 pts/$ for the Xeon W-10855M — making the Xeon W-10855M the 37.6% better value option.