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

✅+70.7% larger total L3 cache (64 MB vs 38 MB).
✅Costs $1,596 less on MSRP ($549 MSRP vs $2,145 MSRP).
✅Delivers 301.1% more PassMark for each dollar spent, at 71.0 vs 17.7 PassMark/$ ($549 MSRP vs $2,145 MSRP).
✅Draws 105W instead of 185W, a 80W reduction.

Trade-offs

❌Less compelling for workstation-style loads than Xeon Gold 6426Y, which brings 16 cores / 32 threads and 80 PCIe lanes.
❌Older platform position on AM4 with DDR4, while Xeon Gold 6426Y moves to LGA4677 and DDR5.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Xeon Gold 6426Y

2023

Why buy it

✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads, plus 80 PCIe lanes vs 24.
✅Newer platform on LGA4677 with DDR5 support instead of AM4 and DDR4.
✅233.3% more PCIe lanes (80 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (37,944 vs 38,955).
❌Smaller total L3 cache (38 MB vs 64 MB).
❌Lower PassMark per dollar, at 17.7 vs 71.0 PassMark/$ ($2,145 MSRP vs $549 MSRP).
❌76.2% higher power demand at 185W vs 105W.

Ryzen 9 5900X

2020

Xeon Gold 6426Y

2023

Why buy it

✅+70.7% larger total L3 cache (64 MB vs 38 MB).
✅Costs $1,596 less on MSRP ($549 MSRP vs $2,145 MSRP).
✅Delivers 301.1% more PassMark for each dollar spent, at 71.0 vs 17.7 PassMark/$ ($549 MSRP vs $2,145 MSRP).
✅Draws 105W instead of 185W, a 80W reduction.

Why buy it

✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads, plus 80 PCIe lanes vs 24.
✅Newer platform on LGA4677 with DDR5 support instead of AM4 and DDR4.
✅233.3% more PCIe lanes (80 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Less compelling for workstation-style loads than Xeon Gold 6426Y, which brings 16 cores / 32 threads and 80 PCIe lanes.
❌Older platform position on AM4 with DDR4, while Xeon Gold 6426Y moves to LGA4677 and DDR5.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Trade-offs

❌Lower PassMark (37,944 vs 38,955).
❌Smaller total L3 cache (38 MB vs 64 MB).
❌Lower PassMark per dollar, at 17.7 vs 71.0 PassMark/$ ($2,145 MSRP vs $549 MSRP).
❌76.2% higher power demand at 185W vs 105W.

Quick Answers

So, is Ryzen 9 5900X better than Xeon Gold 6426Y?

Not in a simple one-size-fits-all way. Xeon Gold 6426Y 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 1.8% 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, Ryzen 9 5900X is the better fit. You are getting 2.7% better PassMark, backed by 12 cores and 24 threads. It also carries the larger cache pool with 70.7% larger total L3 cache (64 MB vs 38 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 $1,596 cheaper on MSRP at $549 MSRP versus $2,145 MSRP, and it gives you a 1.8% average FPS lead across 4 shared CPU game tests in our data. It is also 301.1% better value on MSRP (71.0 vs 17.7 PassMark/$), 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 Gold 6426Y 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 Gold 6426Y Benchmark Check

Path of Exile 2

Preset	Ryzen 9 5900X	Xeon Gold 6426Y
1080p
low	323 FPS	196 FPS
medium	291 FPS	160 FPS
high	243 FPS	132 FPS
ultra	193 FPS	103 FPS
1440p
low	307 FPS	158 FPS
medium	248 FPS	123 FPS
high	192 FPS	97 FPS
ultra	157 FPS	76 FPS
4K
low	193 FPS	73 FPS
medium	156 FPS	60 FPS
high	115 FPS	47 FPS
ultra	103 FPS	39 FPS

Open Ryzen 9 5900X Open Xeon Gold 6426Y

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 5900X	Xeon Gold 6426Y
1080p
low	772 FPS	576 FPS
medium	647 FPS	503 FPS
high	508 FPS	406 FPS
ultra	450 FPS	361 FPS
1440p
low	619 FPS	497 FPS
medium	536 FPS	439 FPS
high	443 FPS	365 FPS
ultra	364 FPS	304 FPS
4K
low	365 FPS	311 FPS
medium	318 FPS	278 FPS
high	289 FPS	251 FPS
ultra	255 FPS	225 FPS

Open Ryzen 9 5900X Open Xeon Gold 6426Y

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 5900X	Xeon Gold 6426Y
1080p
low	832 FPS	949 FPS
medium	645 FPS	949 FPS
high	558 FPS	927 FPS
ultra	459 FPS	842 FPS
1440p
low	721 FPS	875 FPS
medium	565 FPS	777 FPS
high	488 FPS	708 FPS
ultra	407 FPS	637 FPS
4K
low	511 FPS	548 FPS
medium	421 FPS	451 FPS
high	374 FPS	391 FPS
ultra	308 FPS	321 FPS

Open Ryzen 9 5900X Open Xeon Gold 6426Y

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 5900X	Xeon Gold 6426Y
1080p
low	974 FPS	949 FPS
medium	974 FPS	886 FPS
high	934 FPS	766 FPS
ultra	826 FPS	657 FPS
1440p
low	959 FPS	762 FPS
medium	843 FPS	668 FPS
high	726 FPS	574 FPS
ultra	617 FPS	493 FPS
4K
low	694 FPS	555 FPS
medium	621 FPS	494 FPS
high	541 FPS	435 FPS
ultra	437 FPS	371 FPS

Open Ryzen 9 5900X Open Xeon Gold 6426Y

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 5900X and Xeon Gold 6426Y

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 Gold 6426Y

The Xeon Gold 6426Y is manufactured by Intel. It was released in 10 January 2023 (2 years ago). It is based on the Sapphire Rapids (2023−2024) architecture. It features 16 cores and 32 threads. Base frequency is 2.5 GHz, with boost up to 4.1 GHz. L3 cache: 37.5 MB. L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 185 Watt. Memory support: DDR5-4800, DDR5-4400. Passmark benchmark score: 37,944 points. Launch price was $1,517.

⚡

Processing Power

The Ryzen 9 5900X packs 12 cores / 24 threads, while the Xeon Gold 6426Y offers 16 cores / 32 threads — the Xeon Gold 6426Y has 4 more cores. Boost clocks reach 4.8 GHz on the Ryzen 9 5900X versus 4.1 GHz on the Xeon Gold 6426Y — a 15.7% clock advantage for the Ryzen 9 5900X (base: 3.7 GHz vs 2.5 GHz). The Ryzen 9 5900X uses the Vermeer (Zen3) (2020−2022) architecture (7 nm, 12 nm), while the Xeon Gold 6426Y uses Sapphire Rapids (2023−2024) (Intel 7 nm). In PassMark, the Ryzen 9 5900X scores 38,955 against the Xeon Gold 6426Y's 37,944 — a 2.6% lead for the Ryzen 9 5900X. L3 cache: 64 MB on the Ryzen 9 5900X vs 37.5 MB on the Xeon Gold 6426Y.

Feature	Ryzen 9 5900X	Xeon Gold 6426Y
Cores / Threads	12 / 24	16 / 32+33%
Boost Clock	4.8 GHz+17%	4.1 GHz
Base Clock	3.7 GHz+48%	2.5 GHz
L3 Cache	64 MB+71%	37.5 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+3%	37,944
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 Gold 6426Y uses LGA4677 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Ryzen 9 5900X versus 4800 on the Xeon Gold 6426Y — the Xeon Gold 6426Y supports 199.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 6426Y supports up to 4096 of RAM compared to 128 GB — 187.9% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 5900X) vs 8 (Xeon Gold 6426Y). PCIe lanes: 24 (Ryzen 9 5900X) vs 80 (Xeon Gold 6426Y) — the Xeon Gold 6426Y offers 56 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X) and LGA4677 (Xeon Gold 6426Y).

Feature	Ryzen 9 5900X	Xeon Gold 6426Y
Socket	AM4	LGA4677
PCIe Generation	PCIe 4.0	PCIe 5.0+25%
Max RAM Speed	DDR4-3200	4800+119900%
Max RAM Capacity	128 GB+3276700%	4096
RAM Channels	2	8+300%
ECC Support	Yes	Yes
PCIe Lanes	24	80+233%

🔧

Advanced Features

Only the Ryzen 9 5900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Xeon Gold 6426Y supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V (Ryzen 9 5900X) vs VT-x, VT-d (Xeon Gold 6426Y). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K; Xeon Gold 6426Y rivals EPYC 8124P.

Feature	Ryzen 9 5900X	Xeon Gold 6426Y
Integrated GPU	No	No
IGPU Model	—	None
Unlocked	Yes	No
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 Gold 6426Y debuted at $2145. On MSRP ($549 vs $2145), the Ryzen 9 5900X is $1596 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 5900X delivers 71.0 pts/$ vs 17.7 pts/$ for the Xeon Gold 6426Y — making the Ryzen 9 5900X the 120.2% better value option.