
Core i7-8705G vs Xeon E3-1281 v3

Core i7-8705G

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 i7-8705G is positioned at rank 900 and the Xeon E3-1281 v3 is on rank 758, so the Xeon E3-1281 v3 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i7-8705G
Performance Per Dollar Xeon E3-1281 v3
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i7-8705G | Xeon E3-1281 v3 |
|---|---|---|
| Gaming | Balanced gaming performance | Balanced gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($400) | ⚠️ Higher cost ($636) |
| Longevity | ✨ Modern (Kaby Lake G (2018) / 14 nm) | 🛑 Legacy (Legacy / 22 nm) |
💎 Value Proposition
| Insight | Core i7-8705G | Xeon E3-1281 v3 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+60%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($400) | ⚠️ 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 i7-8705G and Xeon E3-1281 v3

Core i7-8705G
The Core i7-8705G is manufactured by Intel. It was released in 1 February 2018 (7 years ago). It is based on the Kaby Lake G (2018) architecture. It features 4 cores and 8 threads. Base frequency is 3.1 GHz, with boost up to 4.1 GHz. L3 cache: 8 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA2270. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 7,633 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 i7-8705G and Xeon E3-1281 v3 share an identical 4-core/8-thread configuration. Boost clocks reach 4.1 GHz on the Core i7-8705G versus 4.1 GHz on the Xeon E3-1281 v3 — identical boost frequencies (base: 3.1 GHz vs 3.7 GHz). The Core i7-8705G is built on the Kaby Lake G (2018) architecture. In PassMark, the Core i7-8705G scores 7,633 against the Xeon E3-1281 v3's 7,587 — a 0.6% lead for the Core i7-8705G. L3 cache: 8 MB (total) on the Core i7-8705G vs 8 MB Intel® Smart Cache on the Xeon E3-1281 v3.
| Feature | Core i7-8705G | Xeon E3-1281 v3 |
|---|---|---|
| Cores / Threads | 4 / 8 | 4 / 8 |
| Boost Clock | 4.1 GHz | 4.1 GHz |
| Base Clock | 3.1 GHz | 3.7 GHz+19% |
| L3 Cache | 8 MB (total) | 8 MB Intel® Smart Cache |
| L2 Cache | 256K (per core) | — |
| Process | 14 nm-36% | 22 nm |
| Architecture | Kaby Lake G (2018) | — |
| PassMark | 7,633 | 7,587 |
Memory & Platform
The Core i7-8705G uses the FCBGA2270 socket (PCIe 3.0), while the Xeon E3-1281 v3 uses LGA1150 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Core i7-8705G | Xeon E3-1281 v3 |
|---|---|---|
| Socket | FCBGA2270 | LGA1150 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
Value Analysis
The Core i7-8705G launched at $400 MSRP, while the Xeon E3-1281 v3 debuted at $555. At current prices ($400 vs $636), the Core i7-8705G is $236 cheaper. In terms of value (PassMark points per dollar), the Core i7-8705G delivers 19.1 pts/$ vs 11.9 pts/$ for the Xeon E3-1281 v3 — making the Core i7-8705G the 46.1% better value option.
| Feature | Core i7-8705G | Xeon E3-1281 v3 |
|---|---|---|
| MSRP | $400-28% | $555 |
| Avg Price (30d) | $400-37% | $636 |
| Performance per Dollar | 19.1+61% | 11.9 |
| Release Date | 2018 | 2014 |
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