Core i7-5775R vs Xeon E3-1281 v3
Core i7-5775R
Xeon E3-1281 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 Core i7-5775R is positioned at rank 452 and the Xeon E3-1281 v3 is on rank 758, so the Core i7-5775R offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i7-5775R
Performance Per Dollar Xeon E3-1281 v3
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i7-5775R | Xeon E3-1281 v3 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($636) |
| Longevity | 🛑 Legacy (Broadwell (2015−2019) / 14 nm) | 🛑 Legacy (Legacy / 22 nm) |
💎 Value Proposition
| Insight | Core i7-5775R | Xeon E3-1281 v3 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($636) |
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 Core i7-5775R and Xeon E3-1281 v3
Core i7-5775R
The Core i7-5775R is manufactured by Intel. It was released in 15 May 2015 (10 years ago). It is based on the Broadwell (2015−2019) architecture. It features 4 cores and 8 threads. Base frequency is 3.3 GHz, with boost up to 3.8 GHz. L3 cache: 6 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: BGA1364. Thermal design power (TDP): 65 Watt. Memory support: DDR3L-1333, DDR3L-1600, DDR3L-1866. Passmark benchmark score: 7,598 points. Launch price was $149.
Xeon E3-1281 v3
The Xeon E3-1281 v3 is manufactured by Intel. It was released in 2015-01-01. It features 4 cores and 8 threads. Base frequency is 3.7 GHz, with boost up to 4.1 GHz. L3 cache: 8 MB Intel® Smart Cache. Built on 22 nm process technology. Socket: LGA1150. Thermal design power (TDP): 82 Watt. Memory support: DDR3L-1333, DDR3L-1600. Passmark benchmark score: 7,587 points. Launch price was $800.
Processing Power
Both the Core i7-5775R and Xeon E3-1281 v3 share an identical 4-core/8-thread configuration. Boost clocks reach 3.8 GHz on the Core i7-5775R versus 4.1 GHz on the Xeon E3-1281 v3 — a 7.6% clock advantage for the Xeon E3-1281 v3 (base: 3.3 GHz vs 3.7 GHz). The Core i7-5775R is built on the Broadwell (2015−2019) architecture. In PassMark, the Core i7-5775R scores 7,598 against the Xeon E3-1281 v3's 7,587 — a 0.1% lead for the Core i7-5775R. L3 cache: 6 MB (total) on the Core i7-5775R vs 8 MB Intel® Smart Cache on the Xeon E3-1281 v3.
| Feature | Core i7-5775R | Xeon E3-1281 v3 |
|---|---|---|
| Cores / Threads | 4 / 8 | 4 / 8 |
| Boost Clock | 3.8 GHz | 4.1 GHz+8% |
| Base Clock | 3.3 GHz | 3.7 GHz+12% |
| L3 Cache | 6 MB (total) | 8 MB Intel® Smart Cache+33% |
| L2 Cache | 256K (per core) | — |
| Process | 14 nm-36% | 22 nm |
| Architecture | Broadwell (2015−2019) | — |
| PassMark | 7,598 | 7,587 |
Memory & Platform
The Core i7-5775R uses the BGA1364 socket (PCIe 3.0), while the Xeon E3-1281 v3 uses LGA1150 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Core i7-5775R | Xeon E3-1281 v3 |
|---|---|---|
| Socket | BGA1364 | LGA1150 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
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The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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