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 7945HX

2023

Why buy it

✅Better for gaming: +22.9% higher average FPS across 50 shared CPU benchmark tests.
✅+33.3% larger total L3 cache (64 MB vs 48 MB).
✅Draws 55W instead of 250W, a 195W reduction.
✅Newer platform on FL1 with DDR5 support instead of LGA4189 and DDR4.
✅Integrated graphics onboard with Radeon 610M, while Xeon Platinum 8358 needs a discrete GPU.

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 28.
✅128.6% more PCIe lanes (64 vs 28) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 7945HX across 50 shared CPU benchmark tests.
❌Lower PassMark (54,416 vs 54,425).
❌Smaller total L3 cache (48 MB vs 64 MB).
❌Launch MSRP is still $4,607 MSRP, while Ryzen 9 7945HX mostly shows up through inconsistent older-market listings.
❌354.5% higher power demand at 250W vs 55W.

Ryzen 9 7945HX

2023

Xeon Platinum 8358

2021

Why buy it

✅Better for gaming: +22.9% higher average FPS across 50 shared CPU benchmark tests.
✅+33.3% larger total L3 cache (64 MB vs 48 MB).
✅Draws 55W instead of 250W, a 195W reduction.
✅Newer platform on FL1 with DDR5 support instead of LGA4189 and DDR4.
✅Integrated graphics onboard with Radeon 610M, while Xeon Platinum 8358 needs a discrete GPU.

Why buy it

✅Better for workstations and heavier parallel workloads: 32 cores / 64 threads, plus 64 PCIe lanes vs 28.
✅128.6% more PCIe lanes (64 vs 28) 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 7945HX across 50 shared CPU benchmark tests.
❌Lower PassMark (54,416 vs 54,425).
❌Smaller total L3 cache (48 MB vs 64 MB).
❌Launch MSRP is still $4,607 MSRP, while Ryzen 9 7945HX mostly shows up through inconsistent older-market listings.
❌354.5% higher power demand at 250W vs 55W.

Quick Answers

So, is Ryzen 9 7945HX 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 7945HX 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 7945HX is the better pick here. According to our tests, it delivers 22.9% 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 7945HX is the better fit. You are getting 0% better PassMark, backed by 16 cores and 32 threads. It also carries 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 7945HX is still the faster CPU overall, but Xeon Platinum 8358 makes more sense if price matters more than absolute performance. Ryzen 9 7945HX is at an unclear MSRP at unclear MSRP versus $4,607 MSRP, and it gives you a 22.9% average FPS lead across 50 shared CPU game tests in our data. Xeon Platinum 8358 is also 100.0% better value on MSRP (11.8 vs 0.0 PassMark/$), which is why it is easier to justify for price-conscious builds on paper.

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

Ryzen 9 7945HX is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2021), a healthier platform with FL1 and DDR5 instead of LGA4189, 33.3% larger total L3 cache (64 MB vs 48 MB), and more multi-core headroom with 16 cores / 32 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 7945HX Benchmark Check

Xeon Platinum 8358 Benchmark Check

Path of Exile 2

Preset	Ryzen 9 7945HX	Xeon Platinum 8358
1080p
low	301 FPS	185 FPS
medium	276 FPS	149 FPS
high	224 FPS	120 FPS
ultra	190 FPS	94 FPS
1440p
low	271 FPS	154 FPS
medium	226 FPS	120 FPS
high	172 FPS	93 FPS
ultra	153 FPS	74 FPS
4K
low	189 FPS	72 FPS
medium	157 FPS	60 FPS
high	119 FPS	46 FPS
ultra	107 FPS	38 FPS

Open Ryzen 9 7945HX Open Xeon Platinum 8358

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 7945HX	Xeon Platinum 8358
1080p
low	744 FPS	416 FPS
medium	620 FPS	364 FPS
high	466 FPS	296 FPS
ultra	397 FPS	237 FPS
1440p
low	630 FPS	356 FPS
medium	541 FPS	317 FPS
high	419 FPS	264 FPS
ultra	328 FPS	203 FPS
4K
low	355 FPS	221 FPS
medium	309 FPS	200 FPS
high	272 FPS	169 FPS
ultra	230 FPS	136 FPS

Open Ryzen 9 7945HX Open Xeon Platinum 8358

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 7945HX	Xeon Platinum 8358
1080p
low	893 FPS	984 FPS
medium	712 FPS	858 FPS
high	618 FPS	811 FPS
ultra	533 FPS	720 FPS
1440p
low	718 FPS	787 FPS
medium	572 FPS	676 FPS
high	487 FPS	639 FPS
ultra	418 FPS	567 FPS
4K
low	513 FPS	504 FPS
medium	427 FPS	397 FPS
high	383 FPS	353 FPS
ultra	323 FPS	288 FPS

Open Ryzen 9 7945HX Open Xeon Platinum 8358

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 7945HX	Xeon Platinum 8358
1080p
low	1129 FPS	911 FPS
medium	1006 FPS	828 FPS
high	873 FPS	714 FPS
ultra	768 FPS	615 FPS
1440p
low	900 FPS	712 FPS
medium	790 FPS	625 FPS
high	689 FPS	537 FPS
ultra	584 FPS	460 FPS
4K
low	648 FPS	514 FPS
medium	578 FPS	459 FPS
high	510 FPS	403 FPS
ultra	436 FPS	351 FPS

Open Ryzen 9 7945HX Open Xeon Platinum 8358

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 7945HX and Xeon Platinum 8358

Ryzen 9 7945HX

The Ryzen 9 7945HX is manufactured by AMD. It was released in 2023-03-12. It is based on the Dragon Range-HX (Zen 4) (2023−2024) architecture. It features 16 cores and 32 threads. Base frequency is 2.5 GHz, with boost up to 5.4 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on CCD = 5 nm, I/O = 6 nm process technology. Socket: FL1. Thermal design power (TDP): 55 Watt. Memory support: DDR5. Passmark benchmark score: 54,425 points. Launch price was $700.

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 7945HX packs 16 cores / 32 threads, while the Xeon Platinum 8358 offers 32 cores / 64 threads — the Xeon Platinum 8358 has 16 more cores. Boost clocks reach 5.4 GHz on the Ryzen 9 7945HX versus 3.4 GHz on the Xeon Platinum 8358 — a 45.5% clock advantage for the Ryzen 9 7945HX (base: 2.5 GHz vs 2.6 GHz). The Ryzen 9 7945HX uses the Dragon Range-HX (Zen 4) (2023−2024) architecture (CCD = 5 nm, I/O = 6 nm), while the Xeon Platinum 8358 uses Ice Lake-SP (2021) (10 nm). In PassMark, the Ryzen 9 7945HX scores 54,425 against the Xeon Platinum 8358's 54,416 — a 0% lead for the Ryzen 9 7945HX. L3 cache: 64 MB (total) on the Ryzen 9 7945HX vs 48 MB (total) on the Xeon Platinum 8358.

Feature	Ryzen 9 7945HX	Xeon Platinum 8358
Cores / Threads	16 / 32	32 / 64+100%
Boost Clock	5.4 GHz+59%	3.4 GHz
Base Clock	2.5 GHz	2.6 GHz+4%
L3 Cache	64 MB (total)+33%	48 MB (total)
L2 Cache	1 MB (per core)	1 MB (per core)
Process	CCD = 5 nm, I/O = 6 nm-50%	10 nm
Architecture	Dragon Range-HX (Zen 4) (2023−2024)	Ice Lake-SP (2021)
PassMark	54,425	54,416
Cinebench R23 Multi	34,521	—
Geekbench 6 Single	2,774	—
Geekbench 6 Multi	16,214	—

🧠

Memory & Platform

The Ryzen 9 7945HX uses the FL1 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 DDR5-5200 on the Ryzen 9 7945HX 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 64 GB — 193.8% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 7945HX) vs 8 (Xeon Platinum 8358). PCIe lanes: 28 (Ryzen 9 7945HX) vs 64 (Xeon Platinum 8358) — the Xeon Platinum 8358 offers 36 more lanes for additional GPUs or NVMe drives. Chipset compatibility: FL1 (Ryzen 9 7945HX) and C621A (Xeon Platinum 8358).

Feature	Ryzen 9 7945HX	Xeon Platinum 8358
Socket	FL1	LGA4189
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	DDR5-5200	3200+63900%
Max RAM Capacity	64 GB+1638300%	4096
RAM Channels	2	8+300%
ECC Support	Yes	Yes
PCIe Lanes	28	64+129%

🔧

Advanced Features

Only the Ryzen 9 7945HX 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 7945HX) vs VT-x, VT-d (Xeon Platinum 8358). The Ryzen 9 7945HX includes integrated graphics (Radeon 610M), while the Xeon Platinum 8358 requires a dedicated GPU. Primary use case: Ryzen 9 7945HX targets Extreme Gaming / Mobile Workstation. Direct competitor: Ryzen 9 7945HX rivals Core i9-14900HX; Xeon Platinum 8358 rivals EPYC 7543.