Ryzen 9 5900X vs Xeon Gold 6138

CPU

GPU

Ryzen 9 5900X

12 Cores24 Thrd105 WWMax: 4.8 GHz2020

Ryzen family

·······

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Xeon Gold 6138

20 Cores40 Thrd125 WWMax: 3.7 GHz2017

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Ryzen 9 5900X vs Xeon Gold 6138 Performance Spectrum

Ryzen 9 5900X

12 / 24

38,955

+61.6%

Ryzen Threadripper 9960X

Ryzen Threadripper PRO 9975WX

Xeon Gold 6138

20 / 40

24,108

0.0%

About PassMark

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.

Ryzen 9 5900X vs Xeon Gold 6138 FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Ryzen 9 5900X vs Xeon Gold 6138: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Ryzen 9 5900X

2020

Why buy it

✅Better for gaming: +45.9% higher average FPS across 50 shared CPU benchmark tests.
✅+132.7% larger total L3 cache (64 MB vs 28 MB).
✅Costs $2,063 less on MSRP ($549 MSRP vs $2,612 MSRP).
✅Delivers 668.8% more PassMark for each dollar spent, at 71.0 vs 9.2 PassMark/$ ($549 MSRP vs $2,612 MSRP).
✅Draws 105W instead of 125W, a 20W reduction.

Trade-offs

❌Lower Geekbench multi-core (11,888 vs 15,439).
❌Less compelling for workstation-style loads than Xeon Gold 6138, which brings 20 cores / 40 threads and 48 PCIe lanes.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Xeon Gold 6138

2017

Why buy it

✅+29.9% higher Geekbench multi-core.
✅Better for workstations and heavier parallel workloads: 20 cores / 40 threads, plus 48 PCIe lanes vs 24.
✅100% more PCIe lanes (48 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (28 MB vs 64 MB).
❌Lower PassMark per dollar, at 9.2 vs 71.0 PassMark/$ ($2,612 MSRP vs $549 MSRP).
❌19% higher power demand at 125W vs 105W.

Quick Answers

So, is Ryzen 9 5900X better than Xeon Gold 6138?

Not really, because they are built for different jobs. Xeon Gold 6138 makes more sense for workstation-style multi-core throughput, while Ryzen 9 5900X is the more practical desktop choice for gaming, platform cost, and everyday use.

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

For streaming, content creation, and heavier multitasking, Xeon Gold 6138 is the stronger fit. You are getting 29.9% better Geekbench multi-core, backed by 20 cores and 40 threads.

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

Ryzen 9 5900X is the better buy right now. Ryzen 9 5900X comes in $2,063 cheaper on MSRP at $549 MSRP versus $2,612 MSRP, and it still gives you a 45.9% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Xeon Gold 6138 is still stronger for heavier multi-core work with 29.9% better Geekbench multi-core. It is also 668.8% better value on MSRP (71.0 vs 9.2 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Ryzen 9 5900X makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2017) and 132.7% larger total L3 cache (64 MB vs 28 MB). That makes it the safer long-term bet.

Ryzen 9 5900X vs Xeon Gold 6138 Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

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 6138

The Xeon Gold 6138 is manufactured by Intel. It was released in 25 April 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 20 cores and 40 threads. Base frequency is 2 GHz, with boost up to 3.7 GHz. L3 cache: 27.5 MB. L2 cache: 20 MB. Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 125 Watt. Memory support: DDR4-2666. Passmark benchmark score: 24,108 points. Launch price was $2,612.

⚡

Processing Power

The Ryzen 9 5900X packs 12 cores / 24 threads, while the Xeon Gold 6138 offers 20 cores / 40 threads — the Xeon Gold 6138 has 8 more cores. Boost clocks reach 4.8 GHz on the Ryzen 9 5900X versus 3.7 GHz on the Xeon Gold 6138 — a 25.9% clock advantage for the Ryzen 9 5900X (base: 3.7 GHz vs 2 GHz). The Ryzen 9 5900X uses the Vermeer (Zen3) (2020−2022) architecture (7 nm, 12 nm), while the Xeon Gold 6138 uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Ryzen 9 5900X scores 38,955 against the Xeon Gold 6138's 24,108 — a 47.1% lead for the Ryzen 9 5900X. Geekbench 6 single-core — the metric most relevant to gaming — records 2,174 vs 1,261, a 53.2% lead for the Ryzen 9 5900X that directly translates to higher frame rates. Multi-core Geekbench: 11,888 vs 15,439 (26% advantage for the Xeon Gold 6138). L3 cache: 64 MB on the Ryzen 9 5900X vs 27.5 MB on the Xeon Gold 6138.

Feature	Ryzen 9 5900X	Xeon Gold 6138
Cores / Threads	12 / 24	20 / 40+67%
Boost Clock	4.8 GHz+30%	3.7 GHz
Base Clock	3.7 GHz+85%	2 GHz
L3 Cache	64 MB+133%	27.5 MB
L2 Cache	512K (per core)+2460%	20 MB
Process	7 nm, 12 nm-50%	14 nm
Architecture	Vermeer (Zen3) (2020−2022)	Skylake (server) (2017−2018)
PassMark	38,955+62%	24,108
Cinebench R23 Multi	21,000	—
Geekbench 6 Single	2,174+72%	1,261
Geekbench 6 Multi	11,888	15,439+30%

🧠

Memory & Platform

The Ryzen 9 5900X uses the AM4 socket (PCIe 4.0), while the Xeon Gold 6138 uses LGA3647 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Ryzen 9 5900X versus DDR4-2666 on the Xeon Gold 6138 — the Ryzen 9 5900X supports 20% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 6138 supports up to 768 GB of RAM compared to 128 GB — 500% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 5900X) vs 6 (Xeon Gold 6138). PCIe lanes: 24 (Ryzen 9 5900X) vs 48 (Xeon Gold 6138) — the Xeon Gold 6138 offers 24 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X) and C621 (Xeon Gold 6138).

Feature	Ryzen 9 5900X	Xeon Gold 6138
Socket	AM4	LGA3647
PCIe Generation	PCIe 4.0+33%	PCIe 3.0
Max RAM Speed	DDR4-3200+20%	DDR4-2666
Max RAM Capacity	128 GB	768 GB+500%
RAM Channels	2	6+200%
ECC Support	Yes	Yes
PCIe Lanes	24	48+100%

🔧

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 6138 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 6138). Primary use case: Ryzen 9 5900X targets Workstation, Xeon Gold 6138 targets Server. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K.

Feature	Ryzen 9 5900X	Xeon Gold 6138
Integrated GPU	No	No
IGPU Model	—	None
Unlocked	Yes	No
AVX-512	No	Yes
Virtualization	AMD-V	VT-x, VT-d
Target Use	Workstation	Server

💰

Value Analysis

At launch, the Ryzen 9 5900X was priced at $549, while the Xeon Gold 6138 came in at $2612. On launch pricing ($549 vs $2612), Ryzen 9 5900X was $2063 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 5900X delivers 71.0 pts/$ vs 9.2 pts/$ for the Xeon Gold 6138 — making the Ryzen 9 5900X the 154% better value option.

Feature	Ryzen 9 5900X	Xeon Gold 6138
MSRP	$549-79%	$2612
Performance per Dollar	71.0+672%	9.2
Release Date	2020	2017

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