CPU
GPU
Athlon 300U
Xeon E5-2603 v3
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 Athlon 300U is positioned at rank 624 and the Xeon E5-2603 v3 is on rank 635, so the Athlon 300U offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Athlon 300U
Performance Per Dollar Xeon E5-2603 v3
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon 300U | Xeon E5-2603 v3 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | ✨ Modern (Raven Ridge 2 (2019) / 14 nm) | 🛑 Legacy (Haswell-EP (2014−2015) / 22 nm) |
💎 Value Proposition
| Insight | Athlon 300U | Xeon E5-2603 v3 |
|---|---|---|
| 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.
Technical Specifications
Side-by-side comparison of Athlon 300U and Xeon E5-2603 v3
Athlon 300U
The Athlon 300U is manufactured by AMD. It was released in 2009-01-01. It is based on the Raven Ridge 2 (2019) architecture. It features 2 cores and 4 threads. Base frequency is 2.4 GHz, with boost up to 3.3 GHz. L3 cache: 4 MB (total). L2 cache: 512K (per core). Built on 14 nm process technology. Socket: FP5. Thermal design power (TDP): 15 Watt. Memory support: DDR4 Dual-channel. Passmark benchmark score: 3,861 points. Launch price was $149.
Xeon E5-2603 v3
The Xeon E5-2603 v3 is manufactured by Intel. It was released in 2015-01-01. It is based on the Haswell-EP (2014−2015) architecture. It features 6 cores and 6 threads. Base frequency is 1.6 GHz, with boost up to 1.6 GHz. L3 cache: 15 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 85 Watt. Memory support: DDR4-1600. Passmark benchmark score: 3,825 points. Launch price was $800.
Processing Power
The Athlon 300U packs 2 cores / 4 threads, while the Xeon E5-2603 v3 offers 6 cores / 6 threads — the Xeon E5-2603 v3 has 4 more cores. Boost clocks reach 3.3 GHz on the Athlon 300U versus 1.6 GHz on the Xeon E5-2603 v3 — a 69.4% clock advantage for the Athlon 300U (base: 2.4 GHz vs 1.6 GHz). The Athlon 300U uses the Raven Ridge 2 (2019) architecture (14 nm), while the Xeon E5-2603 v3 uses Haswell-EP (2014−2015) (22 nm). In PassMark, the Athlon 300U scores 3,861 against the Xeon E5-2603 v3's 3,825 — a 0.9% lead for the Athlon 300U. L3 cache: 4 MB (total) on the Athlon 300U vs 15 MB (total) on the Xeon E5-2603 v3.
| Feature | Athlon 300U | Xeon E5-2603 v3 |
|---|---|---|
| Cores / Threads | 2 / 4 | 6 / 6+200% |
| Boost Clock | 3.3 GHz+106% | 1.6 GHz |
| Base Clock | 2.4 GHz+50% | 1.6 GHz |
| L3 Cache | 4 MB (total) | 15 MB (total)+275% |
| L2 Cache | 512K (per core)+100% | 256K (per core) |
| Process | 14 nm-36% | 22 nm |
| Architecture | Raven Ridge 2 (2019) | Haswell-EP (2014−2015) |
| PassMark | 3,861 | 3,825 |
| Geekbench 6 Single | 900 | — |
| Geekbench 6 Multi | 1,800 | — |
Memory & Platform
The Athlon 300U uses the FP5 socket (PCIe 3.0), while the Xeon E5-2603 v3 uses LGA2011 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Athlon 300U | Xeon E5-2603 v3 |
|---|---|---|
| Socket | FP5 | LGA2011 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | DDR4-2400 | — |
| Max RAM Capacity | 32 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 12 | — |
Advanced Features
Virtualization: AMD-V (Athlon 300U) / not specified (Xeon E5-2603 v3). The Athlon 300U includes integrated graphics (Radeon RX Vega 3), while the Xeon E5-2603 v3 requires a dedicated GPU. Primary use case: Athlon 300U targets Budget Laptop.
| Feature | Athlon 300U | Xeon E5-2603 v3 |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | Radeon RX Vega 3 | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | AMD-V | — |
| Target Use | Budget Laptop | — |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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