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

✅+5% higher PassMark.
✅+113.3% larger total L3 cache (64 MB vs 30 MB).
✅Costs $490 less on MSRP ($549 MSRP vs $1,039 MSRP).
✅Delivers 98.7% more PassMark for each dollar spent, at 71.0 vs 35.7 PassMark/$ ($549 MSRP vs $1,039 MSRP).
✅Draws 105W instead of 200W, a 95W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon w5-2455X across 4 shared CPU benchmark tests.
❌Less compelling for workstation-style loads than Xeon w5-2455X, which brings 12 cores / 24 threads and 64 PCIe lanes.
❌Older platform position on AM4 with DDR4, while Xeon w5-2455X moves to LGA4677 and DDR5.

Xeon w5-2455X

2023

Why buy it

✅Better for gaming: +8.0% higher average FPS across 4 shared CPU benchmark tests.
✅Better for workstations and heavier parallel workloads: 12 cores / 24 threads, plus 64 PCIe lanes vs 24.
✅Newer platform on LGA4677 with DDR5 support instead of AM4 and DDR4.
✅166.7% more PCIe lanes (64 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (37,109 vs 38,955).
❌Smaller total L3 cache (30 MB vs 64 MB).
❌Lower PassMark per dollar, at 35.7 vs 71.0 PassMark/$ ($1,039 MSRP vs $549 MSRP).
❌90.5% higher power demand at 200W vs 105W.

Ryzen 9 5900X

2020

Xeon w5-2455X

2023

Why buy it

✅+5% higher PassMark.
✅+113.3% larger total L3 cache (64 MB vs 30 MB).
✅Costs $490 less on MSRP ($549 MSRP vs $1,039 MSRP).
✅Delivers 98.7% more PassMark for each dollar spent, at 71.0 vs 35.7 PassMark/$ ($549 MSRP vs $1,039 MSRP).
✅Draws 105W instead of 200W, a 95W reduction.

Why buy it

✅Better for gaming: +8.0% higher average FPS across 4 shared CPU benchmark tests.
✅Better for workstations and heavier parallel workloads: 12 cores / 24 threads, plus 64 PCIe lanes vs 24.
✅Newer platform on LGA4677 with DDR5 support instead of AM4 and DDR4.
✅166.7% more PCIe lanes (64 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon w5-2455X across 4 shared CPU benchmark tests.
❌Less compelling for workstation-style loads than Xeon w5-2455X, which brings 12 cores / 24 threads and 64 PCIe lanes.
❌Older platform position on AM4 with DDR4, while Xeon w5-2455X moves to LGA4677 and DDR5.

Trade-offs

❌Lower PassMark (37,109 vs 38,955).
❌Smaller total L3 cache (30 MB vs 64 MB).
❌Lower PassMark per dollar, at 35.7 vs 71.0 PassMark/$ ($1,039 MSRP vs $549 MSRP).
❌90.5% higher power demand at 200W vs 105W.

Quick Answers

So, is Ryzen 9 5900X better than Xeon w5-2455X?

Not in a simple one-size-fits-all way. Xeon w5-2455X 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 streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Ryzen 9 5900X is the better fit. You are getting 5% better PassMark, backed by 12 cores and 24 threads. It also carries the larger cache pool with 113.3% larger total L3 cache (64 MB vs 30 MB).

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

Ryzen 9 5900X is the smarter buy today. Ryzen 9 5900X is $490 cheaper on MSRP at $549 MSRP versus $1,039 MSRP, and it gives you 5% better PassMark. The trade-off is that Xeon w5-2455X is still the better pure gaming CPU with a 8.0% average FPS lead across 4 shared CPU game tests in our data. It is also 98.7% better value on MSRP (71.0 vs 35.7 PassMark/$), 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?

Xeon w5-2455X is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2020), a healthier platform with LGA4677 and DDR5 instead of AM4, and AVX-512 support for heavier modern compute workloads. 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 5900X Benchmark Check

Xeon w5-2455X Benchmark Check

Path of Exile 2

Preset	Ryzen 9 5900X	Xeon w5-2455X
1080p
low	323 FPS	186 FPS
medium	291 FPS	155 FPS
high	243 FPS	129 FPS
ultra	193 FPS	106 FPS
1440p
low	307 FPS	151 FPS
medium	248 FPS	121 FPS
high	192 FPS	98 FPS
ultra	157 FPS	81 FPS
4K
low	193 FPS	83 FPS
medium	156 FPS	71 FPS
high	115 FPS	58 FPS
ultra	103 FPS	45 FPS

Open Ryzen 9 5900X Open Xeon w5-2455X

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 5900X	Xeon w5-2455X
1080p
low	772 FPS	589 FPS
medium	647 FPS	493 FPS
high	508 FPS	404 FPS
ultra	450 FPS	363 FPS
1440p
low	619 FPS	500 FPS
medium	536 FPS	435 FPS
high	443 FPS	366 FPS
ultra	364 FPS	314 FPS
4K
low	365 FPS	311 FPS
medium	318 FPS	272 FPS
high	289 FPS	249 FPS
ultra	255 FPS	220 FPS

Open Ryzen 9 5900X Open Xeon w5-2455X

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 5900X	Xeon w5-2455X
1080p
low	832 FPS	928 FPS
medium	645 FPS	928 FPS
high	558 FPS	928 FPS
ultra	459 FPS	861 FPS
1440p
low	721 FPS	869 FPS
medium	565 FPS	765 FPS
high	488 FPS	726 FPS
ultra	407 FPS	651 FPS
4K
low	511 FPS	560 FPS
medium	421 FPS	459 FPS
high	374 FPS	417 FPS
ultra	308 FPS	338 FPS

Open Ryzen 9 5900X Open Xeon w5-2455X

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 5900X	Xeon w5-2455X
1080p
low	974 FPS	928 FPS
medium	974 FPS	928 FPS
high	934 FPS	865 FPS
ultra	826 FPS	753 FPS
1440p
low	959 FPS	915 FPS
medium	843 FPS	784 FPS
high	726 FPS	685 FPS
ultra	617 FPS	590 FPS
4K
low	694 FPS	634 FPS
medium	621 FPS	552 FPS
high	541 FPS	495 FPS
ultra	437 FPS	428 FPS

Open Ryzen 9 5900X Open Xeon w5-2455X

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 5900X and Xeon w5-2455X

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 w5-2455X

The Xeon w5-2455X 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 12 cores and 24 threads. Base frequency is 3.2 GHz, with boost up to 4.6 GHz. L3 cache: 30 MB. L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 200 Watt. Memory support: DDR5-4800. Passmark benchmark score: 37,109 points. Launch price was $1,039.

⚡

Processing Power

Both the Ryzen 9 5900X and Xeon w5-2455X share an identical 12-core/24-thread configuration. Boost clocks reach 4.8 GHz on the Ryzen 9 5900X versus 4.6 GHz on the Xeon w5-2455X — a 4.3% clock advantage for the Ryzen 9 5900X (base: 3.7 GHz vs 3.2 GHz). The Ryzen 9 5900X uses the Vermeer (Zen3) (2020−2022) architecture (7 nm, 12 nm), while the Xeon w5-2455X uses Sapphire Rapids (2023−2024) (Intel 7 nm). In PassMark, the Ryzen 9 5900X scores 38,955 against the Xeon w5-2455X's 37,109 — a 4.9% lead for the Ryzen 9 5900X. L3 cache: 64 MB on the Ryzen 9 5900X vs 30 MB on the Xeon w5-2455X.

Feature	Ryzen 9 5900X	Xeon w5-2455X
Cores / Threads	12 / 24	12 / 24
Boost Clock	4.8 GHz+4%	4.6 GHz
Base Clock	3.7 GHz+16%	3.2 GHz
L3 Cache	64 MB+113%	30 MB
L2 Cache	512K (per core)	2 MB (per core)+300%
Process	7 nm, 12 nm	Intel 7 nm
Architecture	Vermeer (Zen3) (2020−2022)	Sapphire Rapids (2023−2024)
PassMark	38,955+5%	37,109
Cinebench R23 Multi	21,000	—
Geekbench 6 Single	2,174	—
Geekbench 6 Multi	11,888	—

🧠

Memory & Platform

The Ryzen 9 5900X uses the AM4 socket (PCIe 4.0), while the Xeon w5-2455X uses LGA4677 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Ryzen 9 5900X versus 4800 on the Xeon w5-2455X — the Xeon w5-2455X supports 199.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon w5-2455X supports up to 2048 of RAM compared to 128 GB — 176.5% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 5900X) vs 4 (Xeon w5-2455X). PCIe lanes: 24 (Ryzen 9 5900X) vs 64 (Xeon w5-2455X) — the Xeon w5-2455X offers 40 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X) and W790 (Xeon w5-2455X).

Feature	Ryzen 9 5900X	Xeon w5-2455X
Socket	AM4	LGA4677
PCIe Generation	PCIe 4.0	PCIe 4.0
Max RAM Speed	DDR4-3200	4800+119900%
Max RAM Capacity	128 GB+6553500%	2048
RAM Channels	2	4+100%
ECC Support	Yes	Yes
PCIe Lanes	24	64+167%

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Only the Xeon w5-2455X supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V (Ryzen 9 5900X) vs VT-x, VT-d (Xeon w5-2455X). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K; Xeon w5-2455X rivals Threadripper 7960X.

Feature	Ryzen 9 5900X	Xeon w5-2455X
Integrated GPU	No	No
IGPU Model	—	None
Unlocked	Yes	Yes
AVX-512	No	Yes
Virtualization	AMD-V	VT-x, VT-d
Target Use	Workstation	—

💰

Value Analysis

The Ryzen 9 5900X launched at $549 MSRP, while the Xeon w5-2455X debuted at $1039. On MSRP ($549 vs $1039), the Ryzen 9 5900X is $490 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 5900X delivers 71.0 pts/$ vs 35.7 pts/$ for the Xeon w5-2455X — making the Ryzen 9 5900X the 66.1% better value option.