Xeon E5-2666 V3 vs Ryzen 3 8300G
Xeon E5-2666 V3
Ryzen 3 8300G
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 E5-2666 V3
Performance Per Dollar Ryzen 3 8300G
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon E5-2666 V3 | Ryzen 3 8300G |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($176) |
| Longevity | 🛑 Legacy (Haswell-EP (2014−2015) / 22 nm) | ✨ Modern (Phoenix2 (2024) / 4 nm) |
💎 Value Proposition
| Insight | Xeon E5-2666 V3 | Ryzen 3 8300G |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($176) |
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 E5-2666 V3 and Ryzen 3 8300G
Xeon E5-2666 V3
The Xeon E5-2666 V3 is manufactured by Intel. It was released in 2015-01-01. It is based on the Haswell-EP (2014−2015) architecture. It features 10 cores and 20 threads. Base frequency is 2.9 GHz, with boost up to 3.5 GHz. L3 cache: 25 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA2011-3. Thermal design power (TDP): 135 Watt. Memory support: DDR3, DDR4 2133 MHz Quad-channel. Passmark benchmark score: 14,044 points. Launch price was $800.
Ryzen 3 8300G
The Ryzen 3 8300G is manufactured by AMD. It was released in 8 January 2024 (1 year ago). It is based on the Phoenix2 (2024) architecture. It features 4 cores and 8 threads. Base frequency is 3.4 GHz, with boost up to 4.9 GHz. L3 cache: 8 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 65 Watt. Memory support: DDR5. Passmark benchmark score: 14,113 points. Launch price was $176.
Processing Power
The Xeon E5-2666 V3 packs 10 cores / 20 threads, while the Ryzen 3 8300G offers 4 cores / 8 threads — the Xeon E5-2666 V3 has 6 more cores. Boost clocks reach 3.5 GHz on the Xeon E5-2666 V3 versus 4.9 GHz on the Ryzen 3 8300G — a 33.3% clock advantage for the Ryzen 3 8300G (base: 2.9 GHz vs 3.4 GHz). The Xeon E5-2666 V3 uses the Haswell-EP (2014−2015) architecture (22 nm), while the Ryzen 3 8300G uses Phoenix2 (2024) (4 nm). In PassMark, the Xeon E5-2666 V3 scores 14,044 against the Ryzen 3 8300G's 14,113 — a 0.5% lead for the Ryzen 3 8300G. L3 cache: 25 MB (total) on the Xeon E5-2666 V3 vs 8 MB (total) on the Ryzen 3 8300G.
| Feature | Xeon E5-2666 V3 | Ryzen 3 8300G |
|---|---|---|
| Cores / Threads | 10 / 20+150% | 4 / 8 |
| Boost Clock | 3.5 GHz | 4.9 GHz+40% |
| Base Clock | 2.9 GHz | 3.4 GHz+17% |
| L3 Cache | 25 MB (total)+213% | 8 MB (total) |
| L2 Cache | 256K (per core) | 1 MB (per core)+300% |
| Process | 22 nm | 4 nm-82% |
| Architecture | Haswell-EP (2014−2015) | Phoenix2 (2024) |
| PassMark | 14,044 | 14,113 |
Memory & Platform
The Xeon E5-2666 V3 uses the LGA2011-3 socket (PCIe 3.0), while the Ryzen 3 8300G uses AM5 (PCIe 4.0) — making them incompatible on the same motherboard.
| Feature | Xeon E5-2666 V3 | Ryzen 3 8300G |
|---|---|---|
| Socket | LGA2011-3 | AM5 |
| PCIe Generation | PCIe 3.0 | PCIe 4.0+33% |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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