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