
Atom x7405C vs Xeon D-1527

Atom x7405C

Xeon D-1527
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 Atom x7405C is positioned at rank 180 and the Xeon D-1527 is on rank 545, 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 Atom x7405C
Performance Per Dollar Xeon D-1527
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Atom x7405C | Xeon D-1527 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | ✨ Modern (Amston Lake (2024−2025) / 10 nm) | 🛑 Legacy (Broadwell (2015−2019) / 14 nm) |
💎 Value Proposition
| Insight | Atom x7405C | Xeon D-1527 |
|---|---|---|
| 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 Atom x7405C and Xeon D-1527

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.

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.
Processing Power
The Atom x7405C packs 4 cores / 4 threads, matching the Xeon D-1527's 4 cores. Boost clocks reach 3.4 GHz on the Atom x7405C versus 2.7 GHz on the Xeon D-1527 — a 23% clock advantage for the Atom x7405C (base: 1.7 GHz vs 2.2 GHz). The Atom x7405C uses the Amston Lake (2024−2025) architecture (10 nm), while the Xeon D-1527 uses Broadwell (2015−2019) (14 nm). In PassMark, the Atom x7405C scores 5,218 against the Xeon D-1527's 5,137 — a 1.6% lead for the Atom x7405C. L3 cache: 6 MB (total) on the Atom x7405C vs 1.5 MB (per core) on the Xeon D-1527.
| Feature | Atom x7405C | Xeon D-1527 |
|---|---|---|
| Cores / Threads | 4 / 4 | 4 / 8 |
| Boost Clock | 3.4 GHz+26% | 2.7 GHz |
| Base Clock | 1.7 GHz | 2.2 GHz+29% |
| L3 Cache | 6 MB (total)+300% | 1.5 MB (per core) |
| L2 Cache | 2 MB (total)+700% | 256K (per core) |
| Process | 10 nm-29% | 14 nm |
| Architecture | Amston Lake (2024−2025) | Broadwell (2015−2019) |
| PassMark | 5,218+2% | 5,137 |
Memory & Platform
The Atom x7405C uses the FCBGA1264 socket (PCIe 4.0), while the Xeon D-1527 uses FCBGA1667 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Atom x7405C | Xeon D-1527 |
|---|---|---|
| Socket | FCBGA1264 | FCBGA1667 |
| PCIe Generation | PCIe 4.0+33% | PCIe 3.0 |
| 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 | Atom x7405C | Xeon D-1527 |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | Intel UHD Graphics | — |
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