CPU
GPU
Xeon X5647
Pentium Gold G6605
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. The Xeon X5647 is positioned at rank #593 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Xeon X5647
Performance Per Dollar
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon X5647 | Pentium Gold G6605 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Westmere-EP (2010−2011) / 32 nm) | ✨ Modern (Comet Lake-R (2021) / 14 nm) |
💎 Value Proposition
| Insight | Xeon X5647 | Pentium Gold G6605 |
|---|---|---|
| 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 X5647 and Pentium Gold G6605
Xeon X5647
The Xeon X5647 is manufactured by Intel. It was released in 14 February 2011 (14 years ago). It is based on the Westmere-EP (2010−2011) architecture. It features 4 cores and 8 threads. Base frequency is 2.93 GHz, with boost up to 3.2 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 130 Watt. Memory support: DDR3. Passmark benchmark score: 4,441 points. Launch price was $175.
Pentium Gold G6605
The Pentium Gold G6605 is manufactured by Intel. It was released in 16 March 2021 (4 years ago). It is based on the Comet Lake-R (2021) architecture. It features 2 cores and 4 threads. Base frequency is 4.3 GHz, with boost up to 4.3 GHz. L3 cache: 4 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 58 Watt. Memory support: DDR4-2666. Passmark benchmark score: 4,488 points. Launch price was $86.
Processing Power
The Xeon X5647 packs 4 cores / 8 threads, while the Pentium Gold G6605 offers 2 cores / 4 threads — the Xeon X5647 has 2 more cores. Boost clocks reach 3.2 GHz on the Xeon X5647 versus 4.3 GHz on the Pentium Gold G6605 — a 29.3% clock advantage for the Pentium Gold G6605 (base: 2.93 GHz vs 4.3 GHz). The Xeon X5647 uses the Westmere-EP (2010−2011) architecture (32 nm), while the Pentium Gold G6605 uses Comet Lake-R (2021) (14 nm). In PassMark, the Xeon X5647 scores 4,441 against the Pentium Gold G6605's 4,488 — a 1.1% lead for the Pentium Gold G6605. L3 cache: 12 MB (total) on the Xeon X5647 vs 4 MB (total) on the Pentium Gold G6605.
| Feature | Xeon X5647 | Pentium Gold G6605 |
|---|---|---|
| Cores / Threads | 4 / 8+100% | 2 / 4 |
| Boost Clock | 3.2 GHz | 4.3 GHz+34% |
| Base Clock | 2.93 GHz | 4.3 GHz+47% |
| L3 Cache | 12 MB (total)+200% | 4 MB (total) |
| L2 Cache | 256 kB (per core) | 256 kB (per core) |
| Process | 32 nm | 14 nm-56% |
| Architecture | Westmere-EP (2010−2011) | Comet Lake-R (2021) |
| PassMark | 4,441 | 4,488+1% |
Memory & Platform
The Xeon X5647 uses the LGA1366 socket (PCIe 5.0), while the Pentium Gold G6605 uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Xeon X5647 | Pentium Gold G6605 |
|---|---|---|
| Socket | LGA1366 | LGA1200 |
| PCIe Generation | PCIe 5.0+67% | PCIe 3.0 |
| Max RAM Speed | DDR3-1066 | — |
| RAM Channels | 3 | — |
| ECC Support | ✅ | — |
Advanced Features
Virtualization: VT-x, VT-d (Xeon X5647) / not specified (Pentium Gold G6605). Primary use case: Xeon X5647 targets Workstation. Direct competitor: Xeon X5647 rivals Core i7-980X.
| Feature | Xeon X5647 | Pentium Gold G6605 |
|---|---|---|
| Integrated GPU | No | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | VT-x, VT-d | — |
| Target Use | Workstation | — |
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