Xeon Platinum 8280M vs Xeon Gold 6346
Xeon Platinum 8280M
Xeon Gold 6346
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 8280M
Performance Per Dollar Xeon Gold 6346
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon Platinum 8280M | Xeon Gold 6346 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($6,223) | ✅ More affordable ($2,195) |
| Longevity | ✨ Modern (Cascade Lake-SP (2018) / 14 nm) | ✨ Modern (Ice Lake-SP (2021) / 10 nm) |
💎 Value Proposition
| Insight | Xeon Platinum 8280M | Xeon Gold 6346 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+184%) |
| Upfront Cost | ⚠️ Higher cost ($6,223) | ✅ More affordable ($2,195) |
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 8280M and Xeon Gold 6346
Xeon Platinum 8280M
The Xeon Platinum 8280M 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: 37,665 points. Launch price was $13,012.
Xeon Gold 6346
The Xeon Gold 6346 is manufactured by Intel. It was released in 2015-01-01. It is based on the Ice Lake-SP (2021) architecture. It features 16 cores and 32 threads. Base frequency is 3.1 GHz, with boost up to 3.6 GHz. L3 cache: 36 MB (total). L2 cache: 1 MB (per core). Built on 10 nm process technology. Socket: LGA4189. Thermal design power (TDP): 205 Watt. Memory support: DDR4-3200. Passmark benchmark score: 37,739 points. Launch price was $800.
Processing Power
The Xeon Platinum 8280M packs 28 cores / 56 threads, while the Xeon Gold 6346 offers 16 cores / 32 threads — the Xeon Platinum 8280M has 12 more cores. Boost clocks reach 4 GHz on the Xeon Platinum 8280M versus 3.6 GHz on the Xeon Gold 6346 — a 10.5% clock advantage for the Xeon Platinum 8280M (base: 2.7 GHz vs 3.1 GHz). The Xeon Platinum 8280M uses the Cascade Lake-SP (2018) architecture (14 nm), while the Xeon Gold 6346 uses Ice Lake-SP (2021) (10 nm). In PassMark, the Xeon Platinum 8280M scores 37,665 against the Xeon Gold 6346's 37,739 — a 0.2% lead for the Xeon Gold 6346. L3 cache: 38.5 MB (total) on the Xeon Platinum 8280M vs 36 MB (total) on the Xeon Gold 6346.
| Feature | Xeon Platinum 8280M | Xeon Gold 6346 |
|---|---|---|
| Cores / Threads | 28 / 56+75% | 16 / 32 |
| Boost Clock | 4 GHz+11% | 3.6 GHz |
| Base Clock | 2.7 GHz | 3.1 GHz+15% |
| L3 Cache | 38.5 MB (total)+7% | 36 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 14 nm | 10 nm-29% |
| Architecture | Cascade Lake-SP (2018) | Ice Lake-SP (2021) |
| PassMark | 37,665 | 37,739 |
| Cinebench R23 Multi | 35,400 | — |
| Geekbench 6 Single | 1,214 | — |
| Geekbench 6 Multi | 11,500 | — |
Memory & Platform
The Xeon Platinum 8280M uses the LGA3647 socket (PCIe 3.0), while the Xeon Gold 6346 uses LGA4189 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2933 on the Xeon Platinum 8280M versus 3200 on the Xeon Gold 6346 — the Xeon Gold 6346 supports 199.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 6346 supports up to 6144 of RAM compared to 2048 GB — 100% more capacity for professional workloads. Memory channels: 6 (Xeon Platinum 8280M) vs 8 (Xeon Gold 6346). PCIe lanes: 48 (Xeon Platinum 8280M) vs 64 (Xeon Gold 6346) — the Xeon Gold 6346 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: C621,C622,C624,C627,C628 (Xeon Platinum 8280M) and C621A (Xeon Gold 6346).
| Feature | Xeon Platinum 8280M | Xeon Gold 6346 |
|---|---|---|
| Socket | LGA3647 | LGA4189 |
| PCIe Generation | PCIe 3.0 | PCIe 4.0+33% |
| Max RAM Speed | DDR4-2933 | 3200+79900% |
| Max RAM Capacity | 2048 GB+34952433% | 6144 |
| RAM Channels | 6 | 8+33% |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 48 | 64+33% |
Advanced Features
Neither processor supports overclocking. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: VT-x, VT-d, EPT (Xeon Platinum 8280M) vs VT-x, VT-d (Xeon Gold 6346). Primary use case: Xeon Platinum 8280M targets High-end Server. Direct competitor: Xeon Platinum 8280M rivals EPYC 7742; Xeon Gold 6346 rivals EPYC 73F3.
| Feature | Xeon Platinum 8280M | Xeon Gold 6346 |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | — | None |
| Unlocked | No | No |
| AVX-512 | Yes | Yes |
| Virtualization | VT-x, VT-d, EPT | VT-x, VT-d |
| Target Use | High-end Server | — |
Value Analysis
The Xeon Platinum 8280M launched at $10009 MSRP, while the Xeon Gold 6346 debuted at $2708. At current prices ($6223 vs $2195), the Xeon Gold 6346 is $4028 cheaper. In terms of value (PassMark points per dollar), the Xeon Platinum 8280M delivers 6.1 pts/$ vs 17.2 pts/$ for the Xeon Gold 6346 — making the Xeon Gold 6346 the 95.9% better value option.
| Feature | Xeon Platinum 8280M | Xeon Gold 6346 |
|---|---|---|
| MSRP | $10009 | $2708-73% |
| Avg Price (30d) | $6223 | $2195-65% |
| Performance per Dollar | 6.1 | 17.2+182% |
| Release Date | 2019 | 2021 |
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