Xeon Gold 6438Y+ vs Xeon 6521P
Xeon Gold 6438Y+
Xeon 6521P
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 Gold 6438Y+
Performance Per Dollar Xeon 6521P
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon Gold 6438Y+ | Xeon 6521P |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($389) | ⚠️ Higher cost ($1,250) |
| Longevity | ✨ Modern (Sapphire Rapids (2023−2024) / 10 nm) | ✨ Modern (Granite Rapids (2024−2025) / Intel 3 nm) |
💎 Value Proposition
| Insight | Xeon Gold 6438Y+ | Xeon 6521P |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+211%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($389) | ⚠️ Higher cost ($1,250) |
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 Gold 6438Y+ and Xeon 6521P
Xeon Gold 6438Y+
The Xeon Gold 6438Y+ is manufactured by Intel. It was released in 10 January 2023 (2 years ago). It is based on the Sapphire Rapids (2023−2024) architecture. It features 32 cores and 64 threads. Base frequency is 2 GHz, with boost up to 4 GHz. L3 cache: 60 MB. L2 cache: 2 MB (per core). Built on 10 nm process technology. Socket: LGA4677. Thermal design power (TDP): 205 Watt. Memory support: DDR5-4800. Passmark benchmark score: 62,660 points. Launch price was $3,141.
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.
Processing Power
The Xeon Gold 6438Y+ packs 32 cores / 64 threads, while the Xeon 6521P offers 24 cores / 48 threads — the Xeon Gold 6438Y+ has 8 more cores. Boost clocks reach 4 GHz on the Xeon Gold 6438Y+ versus 4.1 GHz on the Xeon 6521P — a 2.5% clock advantage for the Xeon 6521P (base: 2 GHz vs 2.6 GHz). The Xeon Gold 6438Y+ uses the Sapphire Rapids (2023−2024) architecture (10 nm), while the Xeon 6521P uses Granite Rapids (2024−2025) (Intel 3 nm). In PassMark, the Xeon Gold 6438Y+ scores 62,660 against the Xeon 6521P's 64,761 — a 3.3% lead for the Xeon 6521P. L3 cache: 60 MB on the Xeon Gold 6438Y+ vs 144 MB (total) on the Xeon 6521P.
| Feature | Xeon Gold 6438Y+ | Xeon 6521P |
|---|---|---|
| Cores / Threads | 32 / 64+33% | 24 / 48 |
| Boost Clock | 4 GHz | 4.1 GHz+2% |
| Base Clock | 2 GHz | 2.6 GHz+30% |
| L3 Cache | 60 MB | 144 MB (total)+140% |
| L2 Cache | 2 MB (per core) | 2 MB (per core) |
| Process | 10 nm | Intel 3 nm-70% |
| Architecture | Sapphire Rapids (2023−2024) | Granite Rapids (2024−2025) |
| PassMark | 62,660 | 64,761+3% |
Memory & Platform
The Xeon Gold 6438Y+ uses the LGA4677 socket (PCIe 5.0), while the Xeon 6521P uses LGA4710 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 4800 on the Xeon Gold 6438Y+ versus 6400 on the Xeon 6521P — the Xeon 6521P supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 4096 of RAM. Both feature 8-channel memory with ECC support. PCIe lanes: 80 (Xeon Gold 6438Y+) vs 136 (Xeon 6521P) — the Xeon 6521P offers 56 more lanes for additional GPUs or NVMe drives. Chipset compatibility: C741 (Xeon Gold 6438Y+) and C741 (Xeon 6521P).
| Feature | Xeon Gold 6438Y+ | Xeon 6521P |
|---|---|---|
| Socket | LGA4677 | LGA4710 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | 4800 | 6400+33% |
| Max RAM Capacity | 4096 | 4096 |
| RAM Channels | 8 | 8 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 80 | 136+70% |
Advanced Features
Neither processor supports overclocking. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Both support VT-x, VT-d virtualization. Direct competitor: Xeon Gold 6438Y+ rivals EPYC 9354; Xeon 6521P rivals EPYC 9354.
| Feature | Xeon Gold 6438Y+ | Xeon 6521P |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | None |
| Unlocked | No | No |
| AVX-512 | Yes | Yes |
| Virtualization | VT-x, VT-d | VT-x, VT-d |
Value Analysis
The Xeon Gold 6438Y+ launched at $2607 MSRP, while the Xeon 6521P debuted at $1250. At current prices ($389 vs $1250), the Xeon Gold 6438Y+ is $861 cheaper. In terms of value (PassMark points per dollar), the Xeon Gold 6438Y+ delivers 161.1 pts/$ vs 51.8 pts/$ for the Xeon 6521P — making the Xeon Gold 6438Y+ the 102.7% better value option.
| Feature | Xeon Gold 6438Y+ | Xeon 6521P |
|---|---|---|
| MSRP | $2607 | $1250-52% |
| Avg Price (30d) | $389-69% | $1250 |
| Performance per Dollar | 161.1+211% | 51.8 |
| Release Date | 2023 | 2025 |
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