Xeon w7-3445 vs Core Ultra 7 255HX
Xeon w7-3445
Core Ultra 7 255HX
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 w7-3445
Performance Per Dollar Core Ultra 7 255HX
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon w7-3445 | Core Ultra 7 255HX |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($2,596) | ✅ More affordable ($0) |
| Longevity | ✨ Modern (Sapphire Rapids (2023−2024) / Intel 7 nm) | ✨ Modern (Arrow Lake-HX (2025) / 3 nm) |
💎 Value Proposition
| Insight | Xeon w7-3445 | Core Ultra 7 255HX |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($2,596) | ✅ 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 w7-3445 and Core Ultra 7 255HX
Xeon w7-3445
The Xeon w7-3445 is manufactured by Intel. It was released in 15 February 2023 (2 years ago). It is based on the Sapphire Rapids (2023−2024) architecture. It features 20 cores and 40 threads. Base frequency is 2.6 GHz, with boost up to 4.8 GHz. L3 cache: 52.5 MB. L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 270 Watt. Memory support: DDR5-4800. Passmark benchmark score: 48,991 points. Launch price was $1,989.
Core Ultra 7 255HX
The Core Ultra 7 255HX is manufactured by Intel. It was released in 2025-01-01. It is based on the Arrow Lake-HX (2025) architecture. It features 20 cores and 20 threads. Base frequency is 2.4 GHz, with boost up to 5.2 GHz. L3 cache: 30 MB (total). L2 cache: 3 MB (per core). Built on 3 nm process technology. Socket: FCBGA2114. Thermal design power (TDP): 55 Watt. Memory support: DDR5-6400. Passmark benchmark score: 49,765 points. Launch price was $450.
Processing Power
The Xeon w7-3445 packs 20 cores / 40 threads, matching the Core Ultra 7 255HX's 20 cores. Boost clocks reach 4.8 GHz on the Xeon w7-3445 versus 5.2 GHz on the Core Ultra 7 255HX — a 8% clock advantage for the Core Ultra 7 255HX (base: 2.6 GHz vs 2.4 GHz). The Xeon w7-3445 uses the Sapphire Rapids (2023−2024) architecture (Intel 7 nm), while the Core Ultra 7 255HX uses Arrow Lake-HX (2025) (3 nm). In PassMark, the Xeon w7-3445 scores 48,991 against the Core Ultra 7 255HX's 49,765 — a 1.6% lead for the Core Ultra 7 255HX. L3 cache: 52.5 MB on the Xeon w7-3445 vs 30 MB (total) on the Core Ultra 7 255HX.
| Feature | Xeon w7-3445 | Core Ultra 7 255HX |
|---|---|---|
| Cores / Threads | 20 / 40 | 20 / 20 |
| Boost Clock | 4.8 GHz | 5.2 GHz+8% |
| Base Clock | 2.6 GHz+8% | 2.4 GHz |
| L3 Cache | 52.5 MB+75% | 30 MB (total) |
| L2 Cache | 2 MB (per core) | 3 MB (per core)+50% |
| Process | Intel 7 nm | 3 nm-57% |
| Architecture | Sapphire Rapids (2023−2024) | Arrow Lake-HX (2025) |
| PassMark | 48,991 | 49,765+2% |
| Geekbench 6 Single | — | 2,923 |
| Geekbench 6 Multi | — | 16,885 |
Memory & Platform
The Xeon w7-3445 uses the LGA4677 socket (PCIe 5.0), while the Core Ultra 7 255HX uses FCBGA2114 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 4800 on the Xeon w7-3445 versus DDR5-6400 on the Core Ultra 7 255HX — the Xeon w7-3445 supports 199.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon w7-3445 supports up to 4096 of RAM compared to 192 GB — 182.1% more capacity for professional workloads. Memory channels: 8 (Xeon w7-3445) vs 2 (Core Ultra 7 255HX). PCIe lanes: 112 (Xeon w7-3445) vs 24 (Core Ultra 7 255HX) — the Xeon w7-3445 offers 88 more lanes for additional GPUs or NVMe drives. Chipset compatibility: W790 (Xeon w7-3445) and Intel HM870,Intel WM880 (Core Ultra 7 255HX).
| Feature | Xeon w7-3445 | Core Ultra 7 255HX |
|---|---|---|
| Socket | LGA4677 | FCBGA2114 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | 4800+95900% | DDR5-6400 |
| Max RAM Capacity | 4096 | 192 GB+4915100% |
| RAM Channels | 8+300% | 2 |
| ECC Support | ✅ | ❌ |
| PCIe Lanes | 112+367% | 24 |
Advanced Features
Both processors feature an unlocked multiplier for overclocking. Only the Xeon w7-3445 supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Xeon w7-3445) vs true (Core Ultra 7 255HX). The Core Ultra 7 255HX includes integrated graphics (Intel Arc Xe-LPG), while the Xeon w7-3445 requires a dedicated GPU. Direct competitor: Xeon w7-3445 rivals Threadripper PRO 7965WX; Core Ultra 7 255HX rivals Ryzen 9 9850HX.
| Feature | Xeon w7-3445 | Core Ultra 7 255HX |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | None | Intel Arc Xe-LPG |
| Unlocked | Yes | Yes |
| AVX-512 | Yes | No |
| Virtualization | VT-x, VT-d | true |
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