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 9900X3D

2025

Why buy it

✅Better for gaming: +20.4% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $4,008 less on MSRP ($599 MSRP vs $4,607 MSRP).
✅Delivers 695.8% more PassMark for each dollar spent, at 94.0 vs 11.8 PassMark/$ ($599 MSRP vs $4,607 MSRP).
✅Draws 120W instead of 250W, a 130W reduction.
✅Newer platform on AM5 with DDR5 support instead of LGA4189 and DDR4.

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 9900X3D across 50 shared CPU benchmark tests.
❌Lower PassMark (54,416 vs 56,301).
❌Lower PassMark per dollar, at 11.8 vs 94.0 PassMark/$ ($4,607 MSRP vs $599 MSRP).
❌108.3% higher power demand at 250W vs 120W.
❌Older platform position on LGA4189 with DDR4, while Ryzen 9 9900X3D moves to AM5 and DDR5.

Ryzen 9 9900X3D

2025

Xeon Platinum 8358

2021

Why buy it

✅Better for gaming: +20.4% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $4,008 less on MSRP ($599 MSRP vs $4,607 MSRP).
✅Delivers 695.8% more PassMark for each dollar spent, at 94.0 vs 11.8 PassMark/$ ($599 MSRP vs $4,607 MSRP).
✅Draws 120W instead of 250W, a 130W reduction.
✅Newer platform on AM5 with DDR5 support instead of LGA4189 and DDR4.

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

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

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 9900X3D across 50 shared CPU benchmark tests.
❌Lower PassMark (54,416 vs 56,301).
❌Lower PassMark per dollar, at 11.8 vs 94.0 PassMark/$ ($4,607 MSRP vs $599 MSRP).
❌108.3% higher power demand at 250W vs 120W.
❌Older platform position on LGA4189 with DDR4, while Ryzen 9 9900X3D moves to AM5 and DDR5.

Quick Answers

So, is Ryzen 9 9900X3D better than Xeon Platinum 8358?

Not in a simple one-size-fits-all way. Xeon Platinum 8358 makes more sense for workstation-style multi-core throughput, while Ryzen 9 9900X3D 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 9900X3D is the better pick here. According to our tests, it delivers 20.4% more average FPS across 50 shared CPU game tests. It also has a big cache advantage at 128 MB vs 48 MB.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 9900X3D is the better fit. You are getting 3.5% better PassMark, backed by 12 cores and 24 threads. It also carries the larger cache pool with 166.7% larger total L3 cache (128 MB vs 48 MB).

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

Ryzen 9 9900X3D is the smarter buy today. Ryzen 9 9900X3D is $4,008 cheaper on MSRP at $599 MSRP versus $4,607 MSRP, and it gives you a 20.4% average FPS lead across 50 shared CPU game tests in our data. It is also 695.8% better value on MSRP (94.0 vs 11.8 PassMark/$), 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?

Ryzen 9 9900X3D is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2025 vs 2021), a healthier platform with AM5 and DDR5 instead of LGA4189, 3D V-Cache and a much larger 128 MB L3 cache instead of 48 MB, and more multi-core headroom with 12 cores / 24 threads instead of 32/64. 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 9900X3D Benchmark Check

Xeon Platinum 8358 Benchmark Check

Path of Exile 2

Preset	Ryzen 9 9900X3D	Xeon Platinum 8358
1080p
low	281 FPS	185 FPS
medium	257 FPS	149 FPS
high	220 FPS	120 FPS
ultra	191 FPS	94 FPS
1440p
low	265 FPS	154 FPS
medium	218 FPS	120 FPS
high	173 FPS	93 FPS
ultra	155 FPS	74 FPS
4K
low	183 FPS	72 FPS
medium	150 FPS	60 FPS
high	113 FPS	46 FPS
ultra	100 FPS	38 FPS

Open Ryzen 9 9900X3D Open Xeon Platinum 8358

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 9900X3D	Xeon Platinum 8358
1080p
low	824 FPS	416 FPS
medium	670 FPS	364 FPS
high	497 FPS	296 FPS
ultra	410 FPS	237 FPS
1440p
low	662 FPS	356 FPS
medium	562 FPS	317 FPS
high	433 FPS	264 FPS
ultra	335 FPS	203 FPS
4K
low	369 FPS	221 FPS
medium	317 FPS	200 FPS
high	278 FPS	169 FPS
ultra	233 FPS	136 FPS

Open Ryzen 9 9900X3D Open Xeon Platinum 8358

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 9900X3D	Xeon Platinum 8358
1080p
low	890 FPS	984 FPS
medium	722 FPS	858 FPS
high	649 FPS	811 FPS
ultra	559 FPS	720 FPS
1440p
low	716 FPS	787 FPS
medium	582 FPS	676 FPS
high	511 FPS	639 FPS
ultra	434 FPS	567 FPS
4K
low	510 FPS	504 FPS
medium	420 FPS	397 FPS
high	377 FPS	353 FPS
ultra	316 FPS	288 FPS

Open Ryzen 9 9900X3D Open Xeon Platinum 8358

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 9900X3D	Xeon Platinum 8358
1080p
low	1116 FPS	911 FPS
medium	1001 FPS	828 FPS
high	878 FPS	714 FPS
ultra	792 FPS	615 FPS
1440p
low	872 FPS	712 FPS
medium	766 FPS	625 FPS
high	673 FPS	537 FPS
ultra	584 FPS	460 FPS
4K
low	637 FPS	514 FPS
medium	566 FPS	459 FPS
high	503 FPS	403 FPS
ultra	435 FPS	351 FPS

Open Ryzen 9 9900X3D Open Xeon Platinum 8358

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 9900X3D and Xeon Platinum 8358

Ryzen 9 9900X3D

The Ryzen 9 9900X3D is manufactured by AMD. It was released in 6 January 2025 (less than a 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 5.5 GHz. L3 cache: 128 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: 56,301 points. Launch price was $599.

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.

⚡

Processing Power

The Ryzen 9 9900X3D 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 5.5 GHz on the Ryzen 9 9900X3D versus 3.4 GHz on the Xeon Platinum 8358 — a 47.2% clock advantage for the Ryzen 9 9900X3D (base: 4.4 GHz vs 2.6 GHz). The Ryzen 9 9900X3D 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 9900X3D scores 56,301 against the Xeon Platinum 8358's 54,416 — a 3.4% lead for the Ryzen 9 9900X3D. L3 cache: 128 MB (total) on the Ryzen 9 9900X3D vs 48 MB (total) on the Xeon Platinum 8358.

Feature	Ryzen 9 9900X3D	Xeon Platinum 8358
Cores / Threads	12 / 24	32 / 64+167%
Boost Clock	5.5 GHz+62%	3.4 GHz
Base Clock	4.4 GHz+69%	2.6 GHz
L3 Cache	128 MB (total)+167%	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	56,301+3%	54,416
Geekbench 6 Single	3,400	—
Geekbench 6 Multi	26,000	—

🧠

Memory & Platform

The Ryzen 9 9900X3D 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 9900X3D versus 3200 on the Xeon Platinum 8358 — the Xeon Platinum 8358 supports 199.4% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Platinum 8358 supports up to 4096 of RAM compared to 192 GB — 182.1% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 9900X3D) vs 8 (Xeon Platinum 8358). PCIe lanes: 24 (Ryzen 9 9900X3D) vs 64 (Xeon Platinum 8358) — the Xeon Platinum 8358 offers 40 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X670,X670E,X870,X870E (Ryzen 9 9900X3D) and C621A (Xeon Platinum 8358).

Feature	Ryzen 9 9900X3D	Xeon Platinum 8358
Socket	AM5	LGA4189
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	DDR5-5600	3200+63900%
Max RAM Capacity	192 GB+4915100%	4096
RAM Channels	2	8+300%
ECC Support	Yes	Yes
PCIe Lanes	24	64+167%

🔧

Advanced Features

Only the Ryzen 9 9900X3D 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 9900X3D) vs VT-x, VT-d (Xeon Platinum 8358). The Ryzen 9 9900X3D includes integrated graphics (AMD Radeon Graphics (2 Cores)), while the Xeon Platinum 8358 requires a dedicated GPU. Primary use case: Ryzen 9 9900X3D targets High End Gaming/Creation. Direct competitor: Ryzen 9 9900X3D rivals Core Ultra 9 285K; Xeon Platinum 8358 rivals EPYC 7543.

Feature	Ryzen 9 9900X3D	Xeon Platinum 8358
Integrated GPU	Yes	No
IGPU Model	AMD Radeon Graphics (2 Cores)	None
Unlocked	Yes	No
AVX-512	Yes	Yes
Virtualization	AMD-V	VT-x, VT-d
Target Use	High End Gaming/Creation	—

💰

Value Analysis

The Ryzen 9 9900X3D launched at $599 MSRP, while the Xeon Platinum 8358 debuted at $4607. On MSRP ($599 vs $4607), the Ryzen 9 9900X3D is $4008 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 9900X3D delivers 94.0 pts/$ vs 11.8 pts/$ for the Xeon Platinum 8358 — making the Ryzen 9 9900X3D the 155.3% better value option.