Xeon 6521P vs EPYC 4565P
Xeon 6521P
EPYC 4565P
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 6521P
Performance Per Dollar EPYC 4565P
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon 6521P | EPYC 4565P |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($1,250) | ⚠️ Higher cost ($1,980) |
| Longevity | ✨ Modern (Granite Rapids (2024−2025) / Intel 3 nm) | ✨ Modern (Grado (2025) / 4 nm) |
💎 Value Proposition
| Insight | Xeon 6521P | EPYC 4565P |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+60%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($1,250) | ⚠️ Higher cost ($1,980) |
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 6521P and EPYC 4565P
Xeon 6521P
The Xeon 6521P is manufactured by Intel. It was released in 24 February 2025 (less than a year ago). It is based on the Granite Rapids (2024−2025) architecture. It features 24 cores and 48 threads. Base frequency is 2.6 GHz, with boost up to 4.1 GHz. L3 cache: 144 MB (total). L2 cache: 2 MB (per core). Built on Intel 3 nm process technology. Socket: LGA4710. Thermal design power (TDP): 225 Watt. Memory support: DDR5(6400MT/s). Passmark benchmark score: 64,761 points. Launch price was $1,250.
EPYC 4565P
The EPYC 4565P is manufactured by AMD. It was released in 13 May 2025 (less than a year ago). It is based on the Grado (2025) architecture. It features 16 cores and 32 threads. Base frequency is 4.3 GHz, with boost up to 5.7 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 170 Watt. Memory support: DDR5. Passmark benchmark score: 64,068 points. Launch price was $589.
Processing Power
The Xeon 6521P packs 24 cores / 48 threads, while the EPYC 4565P offers 16 cores / 32 threads — the Xeon 6521P has 8 more cores. Boost clocks reach 4.1 GHz on the Xeon 6521P versus 5.7 GHz on the EPYC 4565P — a 32.7% clock advantage for the EPYC 4565P (base: 2.6 GHz vs 4.3 GHz). The Xeon 6521P uses the Granite Rapids (2024−2025) architecture (Intel 3 nm), while the EPYC 4565P uses Grado (2025) (4 nm). In PassMark, the Xeon 6521P scores 64,761 against the EPYC 4565P's 64,068 — a 1.1% lead for the Xeon 6521P. L3 cache: 144 MB (total) on the Xeon 6521P vs 64 MB (total) on the EPYC 4565P.
| Feature | Xeon 6521P | EPYC 4565P |
|---|---|---|
| Cores / Threads | 24 / 48+50% | 16 / 32 |
| Boost Clock | 4.1 GHz | 5.7 GHz+39% |
| Base Clock | 2.6 GHz | 4.3 GHz+65% |
| L3 Cache | 144 MB (total)+125% | 64 MB (total) |
| L2 Cache | 2 MB (per core)+100% | 1 MB (per core) |
| Process | Intel 3 nm-25% | 4 nm |
| Architecture | Granite Rapids (2024−2025) | Grado (2025) |
| PassMark | 64,761+1% | 64,068 |
Memory & Platform
The Xeon 6521P uses the LGA4710 socket (PCIe 5.0), while the EPYC 4565P uses AM5 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 6400 on the Xeon 6521P versus 5600 on the EPYC 4565P — the Xeon 6521P supports 13.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon 6521P supports up to 4096 of RAM compared to 192 — 182.1% more capacity for professional workloads. Memory channels: 8 (Xeon 6521P) vs 2 (EPYC 4565P). PCIe lanes: 136 (Xeon 6521P) vs 28 (EPYC 4565P) — the Xeon 6521P offers 108 more lanes for additional GPUs or NVMe drives. Chipset compatibility: C741 (Xeon 6521P) and AM5 (EPYC 4565P).
| Feature | Xeon 6521P | EPYC 4565P |
|---|---|---|
| Socket | LGA4710 | AM5 |
| PCIe Generation | PCIe 5.0+25% | PCIe 4.0 |
| Max RAM Speed | 6400+14% | 5600 |
| Max RAM Capacity | 4096+2033% | 192 |
| RAM Channels | 8+300% | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 136+386% | 28 |
Advanced Features
Only the EPYC 4565P 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: VT-x, VT-d (Xeon 6521P) vs VT-x, VT-d, AMD-V (EPYC 4565P). The EPYC 4565P includes integrated graphics (AMD Radeon Graphics), while the Xeon 6521P requires a dedicated GPU. Direct competitor: Xeon 6521P rivals EPYC 9354; EPYC 4565P rivals Core Ultra 9 285K.
| Feature | Xeon 6521P | EPYC 4565P |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | None | AMD Radeon Graphics |
| Unlocked | No | Yes |
| AVX-512 | Yes | Yes |
| Virtualization | VT-x, VT-d | VT-x, VT-d, AMD-V |
Value Analysis
The Xeon 6521P launched at $1250 MSRP, while the EPYC 4565P debuted at $2730. At current prices ($1250 vs $1980), the Xeon 6521P is $730 cheaper. In terms of value (PassMark points per dollar), the Xeon 6521P delivers 51.8 pts/$ vs 32.4 pts/$ for the EPYC 4565P — making the Xeon 6521P the 46.2% better value option.
| Feature | Xeon 6521P | EPYC 4565P |
|---|---|---|
| MSRP | $1250-54% | $2730 |
| Avg Price (30d) | $1250-37% | $1980 |
| Performance per Dollar | 51.8+60% | 32.4 |
| Release Date | 2025 | 2025 |
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