CPU
GPU
Xeon Platinum 8280
Core Ultra 9 285T
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 8280
Performance Per Dollar Core Ultra 9 285T
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon Platinum 8280 | Core Ultra 9 285T |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($2,940) | ✅ More affordable ($549) |
| Longevity | ✨ Modern (Cascade Lake-SP (2018) / 14 nm) | ✨ Modern (Arrow Lake-S (2024−2025) / 3 nm) |
💎 Value Proposition
| Insight | Xeon Platinum 8280 | Core Ultra 9 285T |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+437%) |
| Upfront Cost | ⚠️ Higher cost ($2,940) | ✅ More affordable ($549) |
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 8280 and Core Ultra 9 285T
Xeon Platinum 8280
The Xeon Platinum 8280 is manufactured by Intel. It was released in 11 December 2018 (6 years ago). It is based on the Cascade Lake-SP (2018) architecture. It features 28 cores and 56 threads. Base frequency is 2.7 GHz, with boost up to 4 GHz. L3 cache: 38.5 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 205 Watt. Memory support: DDR4-2933. Passmark benchmark score: 36,830 points. Launch price was $10,009.
Core Ultra 9 285T
The Core Ultra 9 285T is manufactured by Intel. It was released in 7 January 2025 (less than a year ago). It is based on the Arrow Lake-S (2024−2025) architecture. It features 24 cores and 24 threads. Base frequency is 1.4 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: LGA1851. Thermal design power (TDP): 35 Watt. Memory support: DDR5-6400. Passmark benchmark score: 36,916 points. Launch price was $549.
Processing Power
The Xeon Platinum 8280 packs 28 cores / 56 threads, while the Core Ultra 9 285T offers 24 cores / 24 threads — the Xeon Platinum 8280 has 4 more cores. Boost clocks reach 4 GHz on the Xeon Platinum 8280 versus 5.4 GHz on the Core Ultra 9 285T — a 29.8% clock advantage for the Core Ultra 9 285T (base: 2.7 GHz vs 1.4 GHz). The Xeon Platinum 8280 uses the Cascade Lake-SP (2018) architecture (14 nm), while the Core Ultra 9 285T uses Arrow Lake-S (2024−2025) (3 nm). In PassMark, the Xeon Platinum 8280 scores 36,830 against the Core Ultra 9 285T's 36,916 — a 0.2% lead for the Core Ultra 9 285T. L3 cache: 38.5 MB (total) on the Xeon Platinum 8280 vs 36 MB (total) on the Core Ultra 9 285T.
| Feature | Xeon Platinum 8280 | Core Ultra 9 285T |
|---|---|---|
| Cores / Threads | 28 / 56+17% | 24 / 24 |
| Boost Clock | 4 GHz | 5.4 GHz+35% |
| Base Clock | 2.7 GHz+93% | 1.4 GHz |
| L3 Cache | 38.5 MB (total)+7% | 36 MB (total) |
| L2 Cache | 1 MB (per core) | 3 MB (per core)+200% |
| Process | 14 nm | 3 nm-79% |
| Architecture | Cascade Lake-SP (2018) | Arrow Lake-S (2024−2025) |
| PassMark | 36,830 | 36,916 |
Memory & Platform
The Xeon Platinum 8280 uses the LGA3647 socket (PCIe 3.0), while the Core Ultra 9 285T uses LGA1851 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 2933 on the Xeon Platinum 8280 versus 6400 on the Core Ultra 9 285T — the Core Ultra 9 285T supports 74.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Platinum 8280 supports up to 1536 of RAM compared to 256 — 142.9% more capacity for professional workloads. Memory channels: 6 (Xeon Platinum 8280) vs 2 (Core Ultra 9 285T). PCIe lanes: 48 (Xeon Platinum 8280) vs 20 (Core Ultra 9 285T) — the Xeon Platinum 8280 offers 28 more lanes for additional GPUs or NVMe drives. Chipset compatibility: LGA3647 (Xeon Platinum 8280) and Z890,B860 (Core Ultra 9 285T).
| Feature | Xeon Platinum 8280 | Core Ultra 9 285T |
|---|---|---|
| Socket | LGA3647 | LGA1851 |
| PCIe Generation | PCIe 3.0 | PCIe 5.0+67% |
| Max RAM Speed | 2933 | 6400+118% |
| Max RAM Capacity | 1536+500% | 256 |
| RAM Channels | 6+200% | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 48+140% | 20 |
Advanced Features
Neither processor supports overclocking. Only the Xeon Platinum 8280 supports AVX-512 instructions — important for machine learning and scientific applications. Both support VT-x, VT-d virtualization. The Core Ultra 9 285T includes integrated graphics (Intel Arc Xe-LPG Graphics), while the Xeon Platinum 8280 requires a dedicated GPU. Direct competitor: Xeon Platinum 8280 rivals EPYC 7702; Core Ultra 9 285T rivals Ryzen 9 7900.
| Feature | Xeon Platinum 8280 | Core Ultra 9 285T |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | None | Intel Arc Xe-LPG Graphics |
| Unlocked | No | No |
| AVX-512 | Yes | No |
| Virtualization | VT-x, VT-d | VT-x, VT-d |
Value Analysis
The Xeon Platinum 8280 launched at $10009 MSRP, while the Core Ultra 9 285T debuted at $549. At current prices ($2940 vs $549), the Core Ultra 9 285T is $2391 cheaper. In terms of value (PassMark points per dollar), the Xeon Platinum 8280 delivers 12.5 pts/$ vs 67.2 pts/$ for the Core Ultra 9 285T — making the Core Ultra 9 285T the 137.2% better value option.
| Feature | Xeon Platinum 8280 | Core Ultra 9 285T |
|---|---|---|
| MSRP | $10009 | $549-95% |
| Avg Price (30d) | $2940 | $549-81% |
| Performance per Dollar | 12.5 | 67.2+438% |
| Release Date | 2019 | 2025 |
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