Xeon X5272 vs Pentium G645
Xeon X5272
Pentium G645
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 X5272 is positioned at rank 1029 and the Pentium G645 is on rank 838, 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 Xeon X5272
Performance Per Dollar Pentium G645
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon X5272 | Pentium G645 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($76) | ✅ More affordable ($15) |
| Longevity | 🛑 Legacy (Legacy / 45 nm) | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) |
💎 Value Proposition
| Insight | Xeon X5272 | Pentium G645 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+406%) |
| Upfront Cost | ⚠️ Higher cost ($76) | ✅ More affordable ($15) |
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 X5272 and Pentium G645
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.
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.
Processing Power
The Pentium G645 is built on the Sandy Bridge (2011−2013) architecture. In PassMark, the Xeon X5272 scores 1,451 against the Pentium G645's 1,450 — a 0.1% lead for the Xeon X5272. L3 cache: 6 MB L2 Cache on the Xeon X5272 vs 3 MB (total) on the Pentium G645.
| Feature | Xeon X5272 | Pentium G645 |
|---|---|---|
| Cores / Threads | — | 2 / 2 |
| Boost Clock | — | 2.9 GHz |
| Base Clock | 3.4 GHz+17% | 2.9 GHz |
| L3 Cache | 6 MB L2 Cache+100% | 3 MB (total) |
| L2 Cache | — | 256 kB (per core) |
| Process | 45 nm | 32 nm-29% |
| Architecture | — | Sandy Bridge (2011−2013) |
| PassMark | 1,451 | 1,450 |
Memory & Platform
The Xeon X5272 uses the LGA771 socket (PCIe 2.0), while the Pentium G645 uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Xeon X5272 | Pentium G645 |
|---|---|---|
| Socket | LGA771 | LGA1155 |
| 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: true (Xeon X5272) / not specified (Pentium G645). Primary use case: Xeon X5272 targets Server.
| Feature | Xeon X5272 | Pentium G645 |
|---|---|---|
| Integrated GPU | No | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | true | — |
| Target Use | Server | — |
Value Analysis
The Xeon X5272 launched at $1172 MSRP, while the Pentium G645 debuted at $80. At current prices ($76 vs $15), the Pentium G645 is $61 cheaper. In terms of value (PassMark points per dollar), the Xeon X5272 delivers 19.1 pts/$ vs 96.7 pts/$ for the Pentium G645 — making the Pentium G645 the 134% better value option.
| Feature | Xeon X5272 | Pentium G645 |
|---|---|---|
| MSRP | $1172 | $80-93% |
| Avg Price (30d) | $76 | $15-80% |
| Performance per Dollar | 19.1 | 96.7+406% |
| Release Date | 2007 | 2012 |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
You May Also Compare
Similar CPU comparisons based on Xeon X5272 and Pentium G645
