Xeon E3-1275 v2 vs Xeon E5-2623 v3
Xeon E3-1275 v2
Xeon E5-2623 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 E3-1275 v2 is positioned at rank 697 and the Xeon E5-2623 v3 is on rank 719, so the Xeon E3-1275 v2 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Xeon E3-1275 v2
Performance Per Dollar Xeon E5-2623 v3
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon E3-1275 v2 | Xeon E5-2623 v3 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($426) | ✅ More affordable ($50) |
| Longevity | 🛑 Legacy (Ivy Bridge (2012−2013) / 22 nm) | 🛑 Legacy (Haswell-EP (2014−2015) / 22 nm) |
💎 Value Proposition
| Insight | Xeon E3-1275 v2 | Xeon E5-2623 v3 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+753%) |
| Upfront Cost | ⚠️ Higher cost ($426) | ✅ More affordable ($50) |
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 E3-1275 v2 and Xeon E5-2623 v3
Xeon E3-1275 v2
The Xeon E3-1275 v2 is manufactured by Intel. It was released in 14 May 2012 (13 years ago). It is based on the Ivy Bridge (2012−2013) 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 22 nm process technology. Socket: LGA1155. Thermal design power (TDP): 77 Watt. Memory support: DDR3. Passmark benchmark score: 6,644 points. Launch price was $808.
Xeon E5-2623 v3
The Xeon E5-2623 v3 is manufactured by Intel. It was released in 2015-01-01. It is based on the Haswell-EP (2014−2015) architecture. It features 4 cores and 8 threads. Base frequency is 3 GHz, with boost up to 3.5 GHz. L3 cache: 10 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 105 Watt. Memory support: DDR4-1600, DDR4-1866. Passmark benchmark score: 6,652 points. Launch price was $800.
Processing Power
Both the Xeon E3-1275 v2 and Xeon E5-2623 v3 share an identical 4-core/8-thread configuration. Boost clocks reach 3.9 GHz on the Xeon E3-1275 v2 versus 3.5 GHz on the Xeon E5-2623 v3 — a 10.8% clock advantage for the Xeon E3-1275 v2 (base: 3.5 GHz vs 3 GHz). The Xeon E3-1275 v2 uses the Ivy Bridge (2012−2013) architecture (22 nm), while the Xeon E5-2623 v3 uses Haswell-EP (2014−2015) (22 nm). In PassMark, the Xeon E3-1275 v2 scores 6,644 against the Xeon E5-2623 v3's 6,652 — a 0.1% lead for the Xeon E5-2623 v3. Geekbench 6 single-core — the metric most relevant to gaming — records 1,000 vs 899, a 10.6% lead for the Xeon E3-1275 v2 that directly translates to higher frame rates. Multi-core Geekbench: 4,000 vs 3,683 (8.3% advantage for the Xeon E3-1275 v2). L3 cache: 8 MB (total) on the Xeon E3-1275 v2 vs 10 MB (total) on the Xeon E5-2623 v3.
| Feature | Xeon E3-1275 v2 | Xeon E5-2623 v3 |
|---|---|---|
| Cores / Threads | 4 / 8 | 4 / 8 |
| Boost Clock | 3.9 GHz+11% | 3.5 GHz |
| Base Clock | 3.5 GHz+17% | 3 GHz |
| L3 Cache | 8 MB (total) | 10 MB (total)+25% |
| L2 Cache | 256 kB (per core) | 256K (per core) |
| Process | 22 nm | 22 nm |
| Architecture | Ivy Bridge (2012−2013) | Haswell-EP (2014−2015) |
| PassMark | 6,644 | 6,652 |
| Geekbench 6 Single | 1,000+11% | 899 |
| Geekbench 6 Multi | 4,000+9% | 3,683 |
Memory & Platform
The Xeon E3-1275 v2 uses the LGA1155 socket (PCIe 3.0), while the Xeon E5-2623 v3 uses LGA2011 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1600 on the Xeon E3-1275 v2 versus DDR4-1866 on the Xeon E5-2623 v3 — the Xeon E5-2623 v3 supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon E5-2623 v3 supports up to 768 GB of RAM compared to 32.77 GB — 183.6% more capacity for professional workloads. Memory channels: 2 (Xeon E3-1275 v2) vs 4 (Xeon E5-2623 v3). PCIe lanes: 20 (Xeon E3-1275 v2) vs 40 (Xeon E5-2623 v3) — the Xeon E5-2623 v3 offers 20 more lanes for additional GPUs or NVMe drives. Chipset compatibility: C202,C204,C206,C216,B75,H77,Z77 (Xeon E3-1275 v2) and C612,X99 (Xeon E5-2623 v3).
| Feature | Xeon E3-1275 v2 | Xeon E5-2623 v3 |
|---|---|---|
| Socket | LGA1155 | LGA2011 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | DDR3-1600 | DDR4-1866+33% |
| Max RAM Capacity | 32.77 GB | 768 GB+2244% |
| RAM Channels | 2 | 4+100% |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 20 | 40+100% |
Advanced Features
Neither processor supports overclocking. Virtualization support: VT-x, VT-d (Xeon E3-1275 v2) vs Yes (Xeon E5-2623 v3). The Xeon E3-1275 v2 includes integrated graphics (Intel HD Graphics P4000), while the Xeon E5-2623 v3 requires a dedicated GPU. Primary use case: Xeon E3-1275 v2 targets Server/Workstation, Xeon E5-2623 v3 targets Server.
| Feature | Xeon E3-1275 v2 | Xeon E5-2623 v3 |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | Intel HD Graphics P4000 | — |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | VT-x, VT-d | Yes |
| Target Use | Server/Workstation | Server |
Value Analysis
The Xeon E3-1275 v2 launched at $426 MSRP, while the Xeon E5-2623 v3 debuted at $444. At current prices ($426 vs $50), the Xeon E5-2623 v3 is $376 cheaper. In terms of value (PassMark points per dollar), the Xeon E3-1275 v2 delivers 15.6 pts/$ vs 133.0 pts/$ for the Xeon E5-2623 v3 — making the Xeon E5-2623 v3 the 158% better value option.
| Feature | Xeon E3-1275 v2 | Xeon E5-2623 v3 |
|---|---|---|
| MSRP | $426-4% | $444 |
| Avg Price (30d) | $426 | $50-88% |
| Performance per Dollar | 15.6 | 133.0+753% |
| Release Date | 2012 | 2014 |
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