CPU
GPU
Xeon Platinum 8358
Core Ultra 9 275HX
Performance Spectrum - CPU
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.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Xeon Platinum 8358
Performance Per Dollar Core Ultra 9 275HX
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon Platinum 8358 | Core Ultra 9 275HX |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($3,145) | ✅ More affordable ($0) |
| Longevity | ✨ Modern (Ice Lake-SP (2021) / 10 nm) | ✨ Modern (Arrow Lake-HX (2025) / 3 nm) |
💎 Value Proposition
| Insight | Xeon Platinum 8358 | Core Ultra 9 275HX |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($3,145) | ✅ More affordable ($0) |
Performance Check
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.
Technical Specifications
Side-by-side comparison of Xeon Platinum 8358 and Core Ultra 9 275HX
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.
Core Ultra 9 275HX
The Core Ultra 9 275HX is manufactured by Intel. It was released in 2025-01-01. It is based on the Arrow Lake-HX (2025) architecture. It features 24 cores and 24 threads. Base frequency is 2.7 GHz, with boost up to 5.4 GHz. L3 cache: 36 MB (total). L2 cache: 3 MB (per core). Built on 3 nm process technology. Socket: FCBGA2114. Thermal design power (TDP): 55 Watt. Memory support: DDR5-6400. Passmark benchmark score: 56,018 points. Launch price was $600.
Processing Power
The Xeon Platinum 8358 packs 32 cores / 64 threads, while the Core Ultra 9 275HX offers 24 cores / 24 threads — the Xeon Platinum 8358 has 8 more cores. Boost clocks reach 3.4 GHz on the Xeon Platinum 8358 versus 5.4 GHz on the Core Ultra 9 275HX — a 45.5% clock advantage for the Core Ultra 9 275HX (base: 2.6 GHz vs 2.7 GHz). The Xeon Platinum 8358 uses the Ice Lake-SP (2021) architecture (10 nm), while the Core Ultra 9 275HX uses Arrow Lake-HX (2025) (3 nm). In PassMark, the Xeon Platinum 8358 scores 54,416 against the Core Ultra 9 275HX's 56,018 — a 2.9% lead for the Core Ultra 9 275HX. L3 cache: 48 MB (total) on the Xeon Platinum 8358 vs 36 MB (total) on the Core Ultra 9 275HX.
| Feature | Xeon Platinum 8358 | Core Ultra 9 275HX |
|---|---|---|
| Cores / Threads | 32 / 64+33% | 24 / 24 |
| Boost Clock | 3.4 GHz | 5.4 GHz+59% |
| Base Clock | 2.6 GHz | 2.7 GHz+4% |
| L3 Cache | 48 MB (total)+33% | 36 MB (total) |
| L2 Cache | 1 MB (per core) | 3 MB (per core)+200% |
| Process | 10 nm | 3 nm-70% |
| Architecture | Ice Lake-SP (2021) | Arrow Lake-HX (2025) |
| PassMark | 54,416 | 56,018+3% |
| Geekbench 6 Single | — | 2,835 |
| Geekbench 6 Multi | — | 17,908 |
Memory & Platform
The Xeon Platinum 8358 uses the LGA4189 socket (PCIe 4.0), while the Core Ultra 9 275HX uses FCBGA2114 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 3200 on the Xeon Platinum 8358 versus DDR5-6400 on the Core Ultra 9 275HX — 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 256 GB — 176.5% more capacity for professional workloads. Memory channels: 8 (Xeon Platinum 8358) vs 2 (Core Ultra 9 275HX). PCIe lanes: 64 (Xeon Platinum 8358) vs 24 (Core Ultra 9 275HX) — the Xeon Platinum 8358 offers 40 more lanes for additional GPUs or NVMe drives. Chipset compatibility: C621A (Xeon Platinum 8358) and HM870,WM880 (Core Ultra 9 275HX).
| Feature | Xeon Platinum 8358 | Core Ultra 9 275HX |
|---|---|---|
| Socket | LGA4189 | FCBGA2114 |
| PCIe Generation | PCIe 4.0 | PCIe 5.0+25% |
| Max RAM Speed | 3200+63900% | DDR5-6400 |
| Max RAM Capacity | 4096 | 256 GB+6553500% |
| RAM Channels | 8+300% | 2 |
| ECC Support | ✅ | ❌ |
| PCIe Lanes | 64+167% | 24 |
Advanced Features
Only the Core Ultra 9 275HX has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Xeon Platinum 8358 supports AVX-512 instructions — important for machine learning and scientific applications. Both support VT-x, VT-d virtualization. The Core Ultra 9 275HX includes integrated graphics (Intel Arc Graphics), while the Xeon Platinum 8358 requires a dedicated GPU. Primary use case: Core Ultra 9 275HX targets High-End Gaming Laptop. Direct competitor: Xeon Platinum 8358 rivals EPYC 7543; Core Ultra 9 275HX rivals Ryzen 9 9955HX.
| Feature | Xeon Platinum 8358 | Core Ultra 9 275HX |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | None | Intel Arc Graphics |
| Unlocked | No | Yes |
| AVX-512 | Yes | No |
| Virtualization | VT-x, VT-d | VT-x, VT-d |
| Target Use | — | High-End Gaming Laptop |
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