Xeon W-2145 vs Core i9-9900K
Xeon W-2145
Core i9-9900K
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 W-2145
Performance Per Dollar Core i9-9900K
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon W-2145 | Core i9-9900K |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($145) | ⚠️ Higher cost ($331) |
| Longevity | ✨ Modern (Skylake (server) (2017−2018) / 14 nm) | ✨ Modern (Coffee Lake-R (2018−2019) / 14 nm) |
💎 Value Proposition
| Insight | Xeon W-2145 | Core i9-9900K |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+127%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($145) | ⚠️ Higher cost ($331) |
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 W-2145 and Core i9-9900K
Xeon W-2145
The Xeon W-2145 is manufactured by Intel. It was released in 29 August 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 8 cores and 16 threads. Base frequency is 3.7 GHz, with boost up to 4.5 GHz. L3 cache: 11 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2011. Thermal design power (TDP): 140 Watt. Memory support: DDR4. Passmark benchmark score: 18,024 points. Launch price was $1,113.
Core i9-9900K
The Core i9-9900K is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Coffee Lake-R (2018−2019) architecture. It features 8 cores and 16 threads. Base frequency is 3.6 GHz, with boost up to 5 GHz. L3 cache: 16 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 95 Watt. Memory support: DDR4. Passmark benchmark score: 18,109 points. Launch price was $488.
Processing Power
Both the Xeon W-2145 and Core i9-9900K share an identical 8-core/16-thread configuration. Boost clocks reach 4.5 GHz on the Xeon W-2145 versus 5 GHz on the Core i9-9900K — a 10.5% clock advantage for the Core i9-9900K (base: 3.7 GHz vs 3.6 GHz). The Xeon W-2145 uses the Skylake (server) (2017−2018) architecture (14 nm), while the Core i9-9900K uses Coffee Lake-R (2018−2019) (14 nm). In PassMark, the Xeon W-2145 scores 18,024 against the Core i9-9900K's 18,109 — a 0.5% lead for the Core i9-9900K. L3 cache: 11 MB (total) on the Xeon W-2145 vs 16 MB (total) on the Core i9-9900K.
| Feature | Xeon W-2145 | Core i9-9900K |
|---|---|---|
| Cores / Threads | 8 / 16 | 8 / 16 |
| Boost Clock | 4.5 GHz | 5 GHz+11% |
| Base Clock | 3.7 GHz+3% | 3.6 GHz |
| L3 Cache | 11 MB (total) | 16 MB (total)+45% |
| L2 Cache | 1 MB (per core)+300% | 256K (per core) |
| Process | 14 nm | 14 nm |
| Architecture | Skylake (server) (2017−2018) | Coffee Lake-R (2018−2019) |
| PassMark | 18,024 | 18,109 |
Memory & Platform
The Xeon W-2145 uses the LGA2011 socket (PCIe 3.0), while the Core i9-9900K uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR4-2666 memory speed. The Xeon W-2145 supports up to 512 GB of RAM compared to 128 GB — 120% more capacity for professional workloads. Memory channels: 4 (Xeon W-2145) vs 2 (Core i9-9900K). PCIe lanes: 48 (Xeon W-2145) vs 16 (Core i9-9900K) — the Xeon W-2145 offers 32 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel X299,Intel C422 (Xeon W-2145) and Intel 300 series (Core i9-9900K).
| Feature | Xeon W-2145 | Core i9-9900K |
|---|---|---|
| Socket | LGA2011 | LGA1151 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | DDR4-2666 | DDR4-2666 |
| Max RAM Capacity | 512 GB+300% | 128 GB |
| RAM Channels | 4+100% | 2 |
| ECC Support | ✅ | ❌ |
| PCIe Lanes | 48+200% | 16 |
Advanced Features
The Core i9-9900K includes integrated graphics (Intel UHD Graphics 630), while the Xeon W-2145 requires a dedicated GPU.
| Feature | Xeon W-2145 | Core i9-9900K |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | Intel UHD Graphics 630 |
Value Analysis
The Xeon W-2145 launched at $1113 MSRP, while the Core i9-9900K debuted at $488. At current prices ($145 vs $331), the Xeon W-2145 is $186 cheaper. In terms of value (PassMark points per dollar), the Xeon W-2145 delivers 124.3 pts/$ vs 54.7 pts/$ for the Core i9-9900K — making the Xeon W-2145 the 77.8% better value option.
| Feature | Xeon W-2145 | Core i9-9900K |
|---|---|---|
| MSRP | $1113 | $488-56% |
| Avg Price (30d) | $145-56% | $331 |
| Performance per Dollar | 124.3+127% | 54.7 |
| Release Date | 2017 | 2018 |
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