CPU
GPU
U300
Xeon E3-1585 v5
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 U300 is positioned at rank 372 and the Xeon E3-1585 v5 is on rank 345, so the Xeon E3-1585 v5 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar U300
Performance Per Dollar Xeon E3-1585 v5
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | U300 | Xeon E3-1585 v5 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | ✨ Modern (Legacy / Intel 7 nm) | 🛑 Legacy (Skylake-H (2015−2016) / 14 nm) |
💎 Value Proposition
| Insight | U300 | Xeon E3-1585 v5 |
|---|---|---|
| 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.
Path of Exile 2
Valorant
Technical Specifications
Side-by-side comparison of U300 and Xeon E3-1585 v5
U300
The U300 is manufactured by Intel. It was released in 1 January 2023 (2 years ago). It features 5 cores and 6 threads. Max frequency: 4.4 GHz. L3 cache: 8 MB Intel® Smart Cache. Built on Intel 7 nm process technology. Socket: FCBGA1744. Thermal design power (TDP): 55 Watt. Memory support: DDR5-5200, DDR4-3200, LPDDR4x-4267. Passmark benchmark score: 8,492 points. Launch price was $149.
Xeon E3-1585 v5
The Xeon E3-1585 v5 is manufactured by Intel. It was released in 31 May 2016 (9 years ago). It is based on the Skylake-H (2015−2016) architecture. It features 4 cores and 8 threads. Base frequency is 3.5 GHz, with boost up to 3.9 GHz. L3 cache: 8 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: BGA1440. Thermal design power (TDP): 65 Watt. Memory support: DDR3L,LPDDR3 1600 MHz, DDR4 2133 MHz at 1.2V. Passmark benchmark score: 8,408 points. Launch price was $556.
Processing Power
The U300 packs 5 cores / 6 threads, while the Xeon E3-1585 v5 offers 4 cores / 8 threads — the U300 has 1 more core. Boost clocks reach 4.4 GHz on the U300 versus 3.9 GHz on the Xeon E3-1585 v5 — a 12% clock advantage for the U300. The Xeon E3-1585 v5 is built on the Skylake-H (2015−2016) architecture. In PassMark, the U300 scores 8,492 against the Xeon E3-1585 v5's 8,408 — a 1% lead for the U300. L3 cache: 8 MB Intel® Smart Cache on the U300 vs 8 MB (total) on the Xeon E3-1585 v5.
| Feature | U300 | Xeon E3-1585 v5 |
|---|---|---|
| Cores / Threads | 5 / 6+25% | 4 / 8 |
| Boost Clock | 4.4 GHz+13% | 3.9 GHz |
| Base Clock | — | 3.5 GHz |
| L3 Cache | 8 MB Intel® Smart Cache | 8 MB (total) |
| L2 Cache | — | 256 kB (per core) |
| Process | Intel 7 nm-50% | 14 nm |
| Architecture | — | Skylake-H (2015−2016) |
| PassMark | 8,492 | 8,408 |
Memory & Platform
The U300 uses the FCBGA1744 socket (PCIe 4.0), while the Xeon E3-1585 v5 uses BGA1440 (PCIe 5.0) — making them incompatible on the same motherboard.
| Feature | U300 | Xeon E3-1585 v5 |
|---|---|---|
| Socket | FCBGA1744 | BGA1440 |
| PCIe Generation | PCIe 4.0 | PCIe 5.0+25% |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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