Pentium G645 vs Xeon X5272
Pentium G645
Xeon X5272
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 Pentium G645 is positioned at rank 838 and the Xeon X5272 is on rank 1029, so the Pentium G645 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Pentium G645
Performance Per Dollar Xeon X5272
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Pentium G645 | Xeon X5272 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($15) | ⚠️ Higher cost ($76) |
| Longevity | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) | 🛑 Legacy (Legacy / 45 nm) |
💎 Value Proposition
| Insight | Pentium G645 | Xeon X5272 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+406%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($15) | ⚠️ Higher cost ($76) |
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 Pentium G645 and Xeon X5272
Pentium G645
The Pentium G645 is manufactured by Intel. It was released in 2 September 2012 (13 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 2.9 GHz, with boost up to 2.9 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 1,450 points. Launch price was $80.
Xeon X5272
The Xeon X5272 is manufactured by Intel. It was released in 2015-01-01. Base frequency: 3.4 GHz. L3 cache: 6 MB L2 Cache. Built on 45 nm process technology. Socket: LGA771. Thermal design power (TDP): 80 Watt. Passmark benchmark score: 1,451 points. Launch price was $800.
Processing Power
The Pentium G645 is built on the Sandy Bridge (2011−2013) architecture. In PassMark, the Pentium G645 scores 1,450 against the Xeon X5272's 1,451 — a 0.1% lead for the Xeon X5272. L3 cache: 3 MB (total) on the Pentium G645 vs 6 MB L2 Cache on the Xeon X5272.
| Feature | Pentium G645 | Xeon X5272 |
|---|---|---|
| Cores / Threads | 2 / 2 | — |
| Boost Clock | 2.9 GHz | — |
| Base Clock | 2.9 GHz | 3.4 GHz+17% |
| L3 Cache | 3 MB (total) | 6 MB L2 Cache+100% |
| L2 Cache | 256 kB (per core) | — |
| Process | 32 nm-29% | 45 nm |
| Architecture | Sandy Bridge (2011−2013) | — |
| PassMark | 1,450 | 1,451 |
Memory & Platform
The Pentium G645 uses the LGA1155 socket (PCIe 2.0), while the Xeon X5272 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Pentium G645 | Xeon X5272 |
|---|---|---|
| Socket | LGA1155 | LGA771 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | — | DDR2 |
| Max RAM Capacity | — | 128 GB |
| RAM Channels | — | 4 |
| ECC Support | — | ✅ |
| PCIe Lanes | — | 0 |
Advanced Features
Virtualization: not specified (Pentium G645) / true (Xeon X5272). Primary use case: Xeon X5272 targets Server.
| Feature | Pentium G645 | Xeon X5272 |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | true |
| Target Use | — | Server |
Value Analysis
The Pentium G645 launched at $80 MSRP, while the Xeon X5272 debuted at $1172. At current prices ($15 vs $76), the Pentium G645 is $61 cheaper. In terms of value (PassMark points per dollar), the Pentium G645 delivers 96.7 pts/$ vs 19.1 pts/$ for the Xeon X5272 — making the Pentium G645 the 134% better value option.
| Feature | Pentium G645 | Xeon X5272 |
|---|---|---|
| MSRP | $80-93% | $1172 |
| Avg Price (30d) | $15-80% | $76 |
| Performance per Dollar | 96.7+406% | 19.1 |
| Release Date | 2012 | 2007 |
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