Xeon E5-2665 vs Xeon E5-2628 V3
Xeon E5-2665
Xeon E5-2628 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 Xeon E5-2665 is positioned at rank 348 and the Xeon E5-2628 V3 is on rank 342, so the Xeon E5-2628 V3 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Xeon E5-2665
Performance Per Dollar Xeon E5-2628 V3
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon E5-2665 | Xeon E5-2628 V3 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Sandy Bridge-EP (2012) / 32 nm) | 🛑 Legacy (Haswell-EP (2014−2015) / 22 nm) |
💎 Value Proposition
| Insight | Xeon E5-2665 | Xeon E5-2628 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 Xeon E5-2665 and Xeon E5-2628 V3
Xeon E5-2665
The Xeon E5-2665 is manufactured by Intel. It was released in 6 March 2012 (13 years ago). It is based on the Sandy Bridge-EP (2012) architecture. It features 8 cores and 16 threads. Base frequency is 2.4 GHz, with boost up to 3.1 GHz. L3 cache: 20480 kB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA2011. Thermal design power (TDP): 115 Watt. Memory support: DDR3. Passmark benchmark score: 8,293 points. Launch price was $142.
Xeon E5-2628 V3
The Xeon E5-2628 V3 is manufactured by Intel. It was released in 2015-01-01. It is based on the Haswell-EP (2014−2015) architecture. It features 8 cores and 16 threads. Base frequency is 2.5 GHz, with boost up to 3 GHz. L3 cache: 20 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA2011-3. Thermal design power (TDP): 85 Watt. Memory support: DDR4-2133. Passmark benchmark score: 8,447 points. Launch price was $800.
Processing Power
Both the Xeon E5-2665 and Xeon E5-2628 V3 share an identical 8-core/16-thread configuration. Boost clocks reach 3.1 GHz on the Xeon E5-2665 versus 3 GHz on the Xeon E5-2628 V3 — a 3.3% clock advantage for the Xeon E5-2665 (base: 2.4 GHz vs 2.5 GHz). The Xeon E5-2665 uses the Sandy Bridge-EP (2012) architecture (32 nm), while the Xeon E5-2628 V3 uses Haswell-EP (2014−2015) (22 nm). In PassMark, the Xeon E5-2665 scores 8,293 against the Xeon E5-2628 V3's 8,447 — a 1.8% lead for the Xeon E5-2628 V3. L3 cache: 20480 kB (total) on the Xeon E5-2665 vs 20 MB (total) on the Xeon E5-2628 V3.
| Feature | Xeon E5-2665 | Xeon E5-2628 V3 |
|---|---|---|
| Cores / Threads | 8 / 16 | 8 / 16 |
| Boost Clock | 3.1 GHz+3% | 3 GHz |
| Base Clock | 2.4 GHz | 2.5 GHz+4% |
| L3 Cache | 20480 kB (total) | 20 MB (total) |
| L2 Cache | 256 kB (per core) | 256K (per core) |
| Process | 32 nm | 22 nm-31% |
| Architecture | Sandy Bridge-EP (2012) | Haswell-EP (2014−2015) |
| PassMark | 8,293 | 8,447+2% |
Memory & Platform
The Xeon E5-2665 uses the LGA2011 socket (PCIe 5.0), while the Xeon E5-2628 V3 uses LGA2011-3 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Xeon E5-2665 | Xeon E5-2628 V3 |
|---|---|---|
| Socket | LGA2011 | LGA2011-3 |
| PCIe Generation | PCIe 5.0+67% | PCIe 3.0 |
| Max RAM Speed | DDR3-1600 | — |
| Max RAM Capacity | 384 GB | — |
| RAM Channels | 4 | — |
| ECC Support | ✅ | — |
| PCIe Lanes | 40 | — |
Advanced Features
Virtualization: VT-x, VT-d (Xeon E5-2665) / not specified (Xeon E5-2628 V3). Primary use case: Xeon E5-2665 targets Server.
| Feature | Xeon E5-2665 | Xeon E5-2628 V3 |
|---|---|---|
| Integrated GPU | No | — |
| Unlocked | No | — |
| AVX-512 | Yes | — |
| Virtualization | VT-x, VT-d | — |
| Target Use | Server | — |
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