Xeon E-2146G vs Xeon D-1581
Xeon E-2146G
Xeon D-1581
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 E-2146G
Performance Per Dollar Xeon D-1581
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon E-2146G | Xeon D-1581 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($400) |
| Longevity | ✨ Modern (Coffee Lake-S WS (2018−2019) / 14 nm) | 🛑 Legacy (Broadwell (2015−2019) / 14 nm) |
💎 Value Proposition
| Insight | Xeon E-2146G | Xeon D-1581 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($400) |
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 E-2146G and Xeon D-1581
Xeon E-2146G
The Xeon E-2146G is manufactured by Intel. It was released in 12 July 2018 (7 years ago). It is based on the Coffee Lake-S WS (2018−2019) architecture. It features 6 cores and 12 threads. Base frequency is 3.5 GHz, with boost up to 4.5 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 80 Watt. Memory support: DDR4-2666. Passmark benchmark score: 13,240 points. Launch price was $317.
Xeon D-1581
The Xeon D-1581 is manufactured by Intel. It was released in 2015-01-01. It is based on the Broadwell (2015−2019) architecture. It features 16 cores and 32 threads. Base frequency is 1.8 GHz, with boost up to 2.4 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): 65 Watt. Memory support: DDR4, DDR3. Passmark benchmark score: 13,173 points. Launch price was $800.
Processing Power
The Xeon E-2146G packs 6 cores / 12 threads, while the Xeon D-1581 offers 16 cores / 32 threads — the Xeon D-1581 has 10 more cores. Boost clocks reach 4.5 GHz on the Xeon E-2146G versus 2.4 GHz on the Xeon D-1581 — a 60.9% clock advantage for the Xeon E-2146G (base: 3.5 GHz vs 1.8 GHz). The Xeon E-2146G uses the Coffee Lake-S WS (2018−2019) architecture (14 nm), while the Xeon D-1581 uses Broadwell (2015−2019) (14 nm). In PassMark, the Xeon E-2146G scores 13,240 against the Xeon D-1581's 13,173 — a 0.5% lead for the Xeon E-2146G. L3 cache: 12 MB (total) on the Xeon E-2146G vs 1.5 MB (per core) on the Xeon D-1581.
| Feature | Xeon E-2146G | Xeon D-1581 |
|---|---|---|
| Cores / Threads | 6 / 12 | 16 / 32+167% |
| Boost Clock | 4.5 GHz+88% | 2.4 GHz |
| Base Clock | 3.5 GHz+94% | 1.8 GHz |
| L3 Cache | 12 MB (total)+700% | 1.5 MB (per core) |
| L2 Cache | 256 kB (per core) | 256K (per core) |
| Process | 14 nm | 14 nm |
| Architecture | Coffee Lake-S WS (2018−2019) | Broadwell (2015−2019) |
| PassMark | 13,240 | 13,173 |
| Geekbench 6 Single | 1,557 | — |
| Geekbench 6 Multi | 6,385 | — |
Memory & Platform
The Xeon E-2146G uses the LGA1151 socket (PCIe 3.0), while the Xeon D-1581 uses FCBGA1667 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Xeon E-2146G | Xeon D-1581 |
|---|---|---|
| Socket | LGA1151 | FCBGA1667 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | DDR4-2666 | — |
| Max RAM Capacity | 128 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ✅ | — |
| PCIe Lanes | 16 | — |
Advanced Features
Virtualization: Yes (Xeon E-2146G) / not specified (Xeon D-1581). The Xeon E-2146G includes integrated graphics (UHD Graphics P630), while the Xeon D-1581 requires a dedicated GPU.
| Feature | Xeon E-2146G | Xeon D-1581 |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | UHD Graphics P630 | — |
| AVX-512 | No | — |
| Virtualization | Yes | — |
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