Ryzen 9 9900X vs Xeon Platinum 8358

CPU

GPU

Ryzen 9 9900X

12 Cores24 Thrd120 WWMax: 5.6 GHz2024

Ryzen family

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Xeon Platinum 8358

32 Cores64 Thrd250 WWMax: 3.4 GHz2021

Similar parts

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Ryzen 9 9900X vs Xeon Platinum 8358 Performance Spectrum

Ryzen 9 9900X

12 / 24

54,530

+0.2%

Ryzen Threadripper PRO 7965WX

Ryzen Threadripper PRO 5995WX

Ryzen Threadripper 9970X

Xeon Platinum 8358

32 / 64

54,416

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 9900X vs Xeon Platinum 8358 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 9900X vs Xeon Platinum 8358: 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 9900X

2024

Why buy it

✅Better for gaming: +20.3% higher average FPS across 50 shared CPU benchmark tests.
✅+33.3% larger total L3 cache (64 MB vs 48 MB).
✅Costs $4,108 less on MSRP ($499 MSRP vs $4,607 MSRP).
✅Delivers 825.2% more PassMark for each dollar spent, at 109.3 vs 11.8 PassMark/$ ($499 MSRP vs $4,607 MSRP).
✅Draws 120W instead of 250W, a 130W reduction.

Trade-offs

❌Less compelling for workstation-style loads than Xeon Platinum 8358, which brings 32 cores / 64 threads and 64 PCIe lanes.

Xeon Platinum 8358

2021

Why buy it

✅Better for workstations and heavier parallel workloads: 32 cores / 64 threads, plus 64 PCIe lanes vs 24.
✅166.7% more PCIe lanes (64 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 9900X across 50 shared CPU benchmark tests.
❌Lower PassMark (54,416 vs 54,530).
❌Smaller total L3 cache (48 MB vs 64 MB).
❌Lower PassMark per dollar, at 11.8 vs 109.3 PassMark/$ ($4,607 MSRP vs $499 MSRP).
❌108.3% higher power demand at 250W vs 120W.

Quick Answers

So, is Ryzen 9 9900X better than Xeon Platinum 8358?

Not really, because they are built for different jobs. Xeon Platinum 8358 makes more sense for workstation-style multi-core throughput, while Ryzen 9 9900X is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 9900X is the better pick. According to our tests, it delivers 20.3% 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 9900X is the stronger fit. You are getting 0.2% better PassMark, backed by 12 cores and 24 threads. It also has the larger cache pool with 33.3% larger total L3 cache (64 MB vs 48 MB).

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

Ryzen 9 9900X is the better buy right now. Ryzen 9 9900X comes in $4,108 cheaper on MSRP at $499 MSRP versus $4,607 MSRP, and it still gives you a 20.3% average FPS lead across 50 shared CPU game tests in our data. It is also 825.2% better value on MSRP (109.3 vs 11.8 PassMark/$), 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 9900X makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2021), a healthier platform with AM5 and DDR5 instead of LGA4189, 33.3% larger total L3 cache (64 MB vs 48 MB), and more multi-core headroom with 12 cores / 24 threads instead of 32/64. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Ryzen 9 9900X vs Xeon Platinum 8358 Technical Specifications

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

Ryzen 9 9900X

The Ryzen 9 9900X is manufactured by AMD. It was released in 15 August 2024 (1 year ago). It is based on the Granite Ridge (2024−2025) architecture. It features 12 cores and 24 threads. Base frequency is 4.4 GHz, with boost up to 5.6 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5. Passmark benchmark score: 54,530 points. Launch price was $499.

Xeon Platinum 8358

The Xeon Platinum 8358 is manufactured by Intel. It was released in 2021-04-06. It is based on the Ice Lake-SP (2021) architecture. It features 32 cores and 64 threads. Base frequency is 2.6 GHz, with boost up to 3.4 GHz. L3 cache: 48 MB (total). L2 cache: 1 MB (per core). Built on 10 nm process technology. Socket: LGA4189. Thermal design power (TDP): 250 Watt. Memory support: DDR4-3200. Passmark benchmark score: 54,416 points. Launch price was $3,950.

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Processing Power

The Ryzen 9 9900X packs 12 cores / 24 threads, while the Xeon Platinum 8358 offers 32 cores / 64 threads — the Xeon Platinum 8358 has 20 more cores. Boost clocks reach 5.6 GHz on the Ryzen 9 9900X versus 3.4 GHz on the Xeon Platinum 8358 — a 48.9% clock advantage for the Ryzen 9 9900X (base: 4.4 GHz vs 2.6 GHz). The Ryzen 9 9900X uses the Granite Ridge (2024−2025) architecture (4 nm), while the Xeon Platinum 8358 uses Ice Lake-SP (2021) (10 nm). In PassMark, the Ryzen 9 9900X scores 54,530 against the Xeon Platinum 8358's 54,416 — a 0.2% lead for the Ryzen 9 9900X. L3 cache: 64 MB (total) on the Ryzen 9 9900X vs 48 MB (total) on the Xeon Platinum 8358.

Feature	Ryzen 9 9900X	Xeon Platinum 8358
Cores / Threads	12 / 24	32 / 64+167%
Boost Clock	5.6 GHz+65%	3.4 GHz
Base Clock	4.4 GHz+69%	2.6 GHz
L3 Cache	64 MB (total)+33%	48 MB (total)
L2 Cache	1 MB (per core)	1 MB (per core)
Process	4 nm-60%	10 nm
Architecture	Granite Ridge (2024−2025)	Ice Lake-SP (2021)
PassMark	54,530	54,416
Cinebench R23 Multi	33,003	—
Geekbench 6 Single	3,401	—
Geekbench 6 Multi	19,756	—

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Memory & Platform

The Ryzen 9 9900X uses the AM5 socket (PCIe 5.0), while the Xeon Platinum 8358 uses LGA4189 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5600 on the Ryzen 9 9900X versus 3200 on the Xeon Platinum 8358 — the Ryzen 9 9900X supports 75% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Platinum 8358 supports up to 4096 GB of RAM compared to 256 GB — 1500% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 9900X) vs 8 (Xeon Platinum 8358). PCIe lanes: 24 (Ryzen 9 9900X) vs 64 (Xeon Platinum 8358) — the Xeon Platinum 8358 offers 40 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A620,B650,X670,X870 (Ryzen 9 9900X) and C621A (Xeon Platinum 8358).

Feature	Ryzen 9 9900X	Xeon Platinum 8358
Socket	AM5	LGA4189
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	DDR5-5600+75%	3200
Max RAM Capacity	256 GB	4096 GB+1500%
RAM Channels	2	8+300%
ECC Support	Yes	Yes
PCIe Lanes	24	64+167%

🔧

Advanced Features

Only the Ryzen 9 9900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: AMD-V (Ryzen 9 9900X) vs VT-x, VT-d (Xeon Platinum 8358). The Ryzen 9 9900X includes integrated graphics (Radeon 610M), while the Xeon Platinum 8358 requires a dedicated GPU. Direct competitor: Xeon Platinum 8358 rivals EPYC 7543.

Feature	Ryzen 9 9900X	Xeon Platinum 8358
Integrated GPU	Yes	No
IGPU Model	Radeon 610M	None
Unlocked	Yes	No
AVX-512	Yes	Yes
Virtualization	AMD-V	VT-x, VT-d

💰

Value Analysis

At launch, the Ryzen 9 9900X was priced at $499, while the Xeon Platinum 8358 came in at $4607. On launch pricing ($499 vs $4607), Ryzen 9 9900X was $4108 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 9900X delivers 109.3 pts/$ vs 11.8 pts/$ for the Xeon Platinum 8358 — making the Ryzen 9 9900X the 161% better value option.

Feature	Ryzen 9 9900X	Xeon Platinum 8358
MSRP	$499-89%	$4607
Performance per Dollar	109.3+826%	11.8
Release Date	2024	2021

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