Core Ultra 9 285K vs EPYC 8434P
Core Ultra 9 285K
EPYC 8434P
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 Core Ultra 9 285K
Performance Per Dollar EPYC 8434P
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core Ultra 9 285K | EPYC 8434P |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($550) | ⚠️ Higher cost ($3,137) |
| Longevity | ✨ Modern (Arrow Lake-S (2024−2025) / 3 nm) | ✨ Modern (Siena (2023−2024) / 5 nm) |
💎 Value Proposition
| Insight | Core Ultra 9 285K | EPYC 8434P |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+479%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($550) | ⚠️ Higher cost ($3,137) |
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 Core Ultra 9 285K and EPYC 8434P
Core Ultra 9 285K
The Core Ultra 9 285K is manufactured by Intel. It was released in 24 October 2024 (1 year ago). It is based on the Arrow Lake-S (2024−2025) architecture. It features 24 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 5.6 GHz. L3 cache: 36 MB (total). L2 cache: 3 MB (per core). Built on 3 nm process technology. Socket: LGA1851. Thermal design power (TDP): 125 Watt. Memory support: DDR5-6400. Passmark benchmark score: 67,482 points. Launch price was $589.
EPYC 8434P
The EPYC 8434P is manufactured by AMD. It was released in 18 September 2023 (2 years ago). It is based on the Siena (2023−2024) architecture. It features 48 cores and 96 threads. Base frequency is 2.5 GHz, with boost up to 3.1 GHz. L3 cache: 128 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: SP6. Thermal design power (TDP): 200 Watt. Memory support: DDR5. Passmark benchmark score: 66,490 points. Launch price was $2,700.
Processing Power
The Core Ultra 9 285K packs 24 cores / 24 threads, while the EPYC 8434P offers 48 cores / 96 threads — the EPYC 8434P has 24 more cores. Boost clocks reach 5.6 GHz on the Core Ultra 9 285K versus 3.1 GHz on the EPYC 8434P — a 57.5% clock advantage for the Core Ultra 9 285K (base: 3.7 GHz vs 2.5 GHz). The Core Ultra 9 285K uses the Arrow Lake-S (2024−2025) architecture (3 nm), while the EPYC 8434P uses Siena (2023−2024) (5 nm). In PassMark, the Core Ultra 9 285K scores 67,482 against the EPYC 8434P's 66,490 — a 1.5% lead for the Core Ultra 9 285K. L3 cache: 36 MB (total) on the Core Ultra 9 285K vs 128 MB (total) on the EPYC 8434P.
| Feature | Core Ultra 9 285K | EPYC 8434P |
|---|---|---|
| Cores / Threads | 24 / 24 | 48 / 96+100% |
| Boost Clock | 5.6 GHz+81% | 3.1 GHz |
| Base Clock | 3.7 GHz+48% | 2.5 GHz |
| L3 Cache | 36 MB (total) | 128 MB (total)+256% |
| L2 Cache | 3 MB (per core)+200% | 1 MB (per core) |
| Process | 3 nm-40% | 5 nm |
| Architecture | Arrow Lake-S (2024−2025) | Siena (2023−2024) |
| PassMark | 67,482+1% | 66,490 |
| Cinebench R23 Multi | 45,563 | — |
| Geekbench 6 Single | 3,200 | — |
| Geekbench 6 Multi | 22,563 | — |
Memory & Platform
The Core Ultra 9 285K uses the LGA1851 socket (PCIe 5.0), while the EPYC 8434P uses SP6 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-6400 on the Core Ultra 9 285K versus 4800 on the EPYC 8434P — the EPYC 8434P supports 199.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The EPYC 8434P supports up to 1152 of RAM compared to 192 GB — 142.9% more capacity for professional workloads. Memory channels: 2 (Core Ultra 9 285K) vs 6 (EPYC 8434P). PCIe lanes: 24 (Core Ultra 9 285K) vs 96 (EPYC 8434P) — the EPYC 8434P offers 72 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Z890 (Core Ultra 9 285K) and SP6 (EPYC 8434P).
| Feature | Core Ultra 9 285K | EPYC 8434P |
|---|---|---|
| Socket | LGA1851 | SP6 |
| PCIe Generation | PCIe 5.0+25% | PCIe 4.0 |
| Max RAM Speed | DDR5-6400 | 4800+95900% |
| Max RAM Capacity | 192 GB+17476167% | 1152 |
| RAM Channels | 2 | 6+200% |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 24 | 96+300% |
Advanced Features
Only the Core Ultra 9 285K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the EPYC 8434P supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: true (Core Ultra 9 285K) vs VT-x, VT-d (EPYC 8434P). The Core Ultra 9 285K includes integrated graphics (Intel Arc Graphics 64EU), while the EPYC 8434P requires a dedicated GPU. Direct competitor: Core Ultra 9 285K rivals Ryzen 9 9950X; EPYC 8434P rivals Xeon Platinum 8452Y.
| Feature | Core Ultra 9 285K | EPYC 8434P |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | Intel Arc Graphics 64EU | None |
| Unlocked | Yes | No |
| AVX-512 | No | Yes |
| Virtualization | true | VT-x, VT-d |
Value Analysis
The Core Ultra 9 285K launched at $589 MSRP, while the EPYC 8434P debuted at $1517. At current prices ($550 vs $3137), the Core Ultra 9 285K is $2587 cheaper. In terms of value (PassMark points per dollar), the Core Ultra 9 285K delivers 122.7 pts/$ vs 21.2 pts/$ for the EPYC 8434P — making the Core Ultra 9 285K the 141.1% better value option.
| Feature | Core Ultra 9 285K | EPYC 8434P |
|---|---|---|
| MSRP | $589-61% | $1517 |
| Avg Price (30d) | $550-82% | $3137 |
| Performance per Dollar | 122.7+479% | 21.2 |
| Release Date | 2024 | 2023 |
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