CPU
GPU
Xeon D-1527
Atom x7405C
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. The Xeon D-1527 is positioned at rank 545 and the Atom x7405C is on rank 180, so the Atom x7405C offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Xeon D-1527
Performance Per Dollar Atom x7405C
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon D-1527 | Atom x7405C |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Broadwell (2015−2019) / 14 nm) | ✨ Modern (Amston Lake (2024−2025) / 10 nm) |
💎 Value Proposition
| Insight | Xeon D-1527 | Atom x7405C |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
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 D-1527 and Atom x7405C
Xeon D-1527
The Xeon D-1527 is manufactured by Intel. It was released in 1 November 2015 (10 years ago). It is based on the Broadwell (2015−2019) architecture. It features 4 cores and 8 threads. Base frequency is 2.2 GHz, with boost up to 2.7 GHz. L3 cache: 1.5 MB (per core). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA1667. Thermal design power (TDP): 35 Watt. Memory support: DDR4, DDR3. Passmark benchmark score: 5,137 points. Launch price was $213.
Atom x7405C
The Atom x7405C is manufactured by Intel. It was released in 8 April 2024 (1 year ago). It is based on the Amston Lake (2024−2025) architecture. It features 4 cores and 4 threads. Base frequency is 1.7 GHz, with boost up to 3.4 GHz. L3 cache: 6 MB (total). L2 cache: 2 MB (total). Built on 10 nm process technology. Socket: FCBGA1264. Thermal design power (TDP): 12 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 5,218 points. Launch price was $57.
Processing Power
The Xeon D-1527 packs 4 cores / 8 threads, matching the Atom x7405C's 4 cores. Boost clocks reach 2.7 GHz on the Xeon D-1527 versus 3.4 GHz on the Atom x7405C — a 23% clock advantage for the Atom x7405C (base: 2.2 GHz vs 1.7 GHz). The Xeon D-1527 uses the Broadwell (2015−2019) architecture (14 nm), while the Atom x7405C uses Amston Lake (2024−2025) (10 nm). In PassMark, the Xeon D-1527 scores 5,137 against the Atom x7405C's 5,218 — a 1.6% lead for the Atom x7405C. L3 cache: 1.5 MB (per core) on the Xeon D-1527 vs 6 MB (total) on the Atom x7405C.
| Feature | Xeon D-1527 | Atom x7405C |
|---|---|---|
| Cores / Threads | 4 / 8 | 4 / 4 |
| Boost Clock | 2.7 GHz | 3.4 GHz+26% |
| Base Clock | 2.2 GHz+29% | 1.7 GHz |
| L3 Cache | 1.5 MB (per core) | 6 MB (total)+300% |
| L2 Cache | 256K (per core) | 2 MB (total)+700% |
| Process | 14 nm | 10 nm-29% |
| Architecture | Broadwell (2015−2019) | Amston Lake (2024−2025) |
| PassMark | 5,137 | 5,218+2% |
Memory & Platform
The Xeon D-1527 uses the FCBGA1667 socket (PCIe 3.0), while the Atom x7405C uses FCBGA1264 (PCIe 4.0) — making them incompatible on the same motherboard.
| Feature | Xeon D-1527 | Atom x7405C |
|---|---|---|
| Socket | FCBGA1667 | FCBGA1264 |
| PCIe Generation | PCIe 3.0 | PCIe 4.0+33% |
| Max RAM Speed | — | DDR5-4800 |
| Max RAM Capacity | — | 16 GB |
| RAM Channels | — | 1 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 9 |
Advanced Features
The Atom x7405C includes integrated graphics (Intel UHD Graphics), while the Xeon D-1527 requires a dedicated GPU.
| Feature | Xeon D-1527 | Atom x7405C |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | Intel UHD Graphics |
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