Xeon D-1581 vs Xeon E-2146G
Xeon D-1581
Xeon E-2146G
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 D-1581
Performance Per Dollar Xeon E-2146G
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon D-1581 | Xeon E-2146G |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($400) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Broadwell (2015−2019) / 14 nm) | ✨ Modern (Coffee Lake-S WS (2018−2019) / 14 nm) |
💎 Value Proposition
| Insight | Xeon D-1581 | Xeon E-2146G |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($400) | ✅ More affordable ($0) |
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-1581 and Xeon E-2146G
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.
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.
Processing Power
The Xeon D-1581 packs 16 cores / 32 threads, while the Xeon E-2146G offers 6 cores / 12 threads — the Xeon D-1581 has 10 more cores. Boost clocks reach 2.4 GHz on the Xeon D-1581 versus 4.5 GHz on the Xeon E-2146G — a 60.9% clock advantage for the Xeon E-2146G (base: 1.8 GHz vs 3.5 GHz). The Xeon D-1581 uses the Broadwell (2015−2019) architecture (14 nm), while the Xeon E-2146G uses Coffee Lake-S WS (2018−2019) (14 nm). In PassMark, the Xeon D-1581 scores 13,173 against the Xeon E-2146G's 13,240 — a 0.5% lead for the Xeon E-2146G. L3 cache: 1.5 MB (per core) on the Xeon D-1581 vs 12 MB (total) on the Xeon E-2146G.
| Feature | Xeon D-1581 | Xeon E-2146G |
|---|---|---|
| Cores / Threads | 16 / 32+167% | 6 / 12 |
| Boost Clock | 2.4 GHz | 4.5 GHz+88% |
| Base Clock | 1.8 GHz | 3.5 GHz+94% |
| L3 Cache | 1.5 MB (per core) | 12 MB (total)+700% |
| L2 Cache | 256K (per core) | 256 kB (per core) |
| Process | 14 nm | 14 nm |
| Architecture | Broadwell (2015−2019) | Coffee Lake-S WS (2018−2019) |
| PassMark | 13,173 | 13,240 |
| Geekbench 6 Single | — | 1,557 |
| Geekbench 6 Multi | — | 6,385 |
Memory & Platform
The Xeon D-1581 uses the FCBGA1667 socket (PCIe 3.0), while the Xeon E-2146G uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Xeon D-1581 | Xeon E-2146G |
|---|---|---|
| Socket | FCBGA1667 | LGA1151 |
| 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: not specified (Xeon D-1581) / Yes (Xeon E-2146G). The Xeon E-2146G includes integrated graphics (UHD Graphics P630), while the Xeon D-1581 requires a dedicated GPU.
| Feature | Xeon D-1581 | Xeon E-2146G |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | UHD Graphics P630 |
| AVX-512 | — | No |
| Virtualization | — | Yes |
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