Pentium G645T vs Atom x5-Z8500
Pentium G645T
Atom x5-Z8500
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 G645T is positioned at rank 807 and the Atom x5-Z8500 is on rank 450, so the Atom x5-Z8500 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Pentium G645T
Performance Per Dollar Atom x5-Z8500
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Pentium G645T | Atom x5-Z8500 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($15) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) | 🛑 Legacy (Cherry Trail (2015−2016) / 14 nm) |
💎 Value Proposition
| Insight | Pentium G645T | Atom x5-Z8500 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($15) | ✅ More affordable ($0) |
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 G645T and Atom x5-Z8500
Pentium G645T
The Pentium G645T is manufactured by Intel. It was released in 2007-01-01. It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 2.5 GHz, with boost up to 2.5 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 1,238 points. Launch price was $69.
Atom x5-Z8500
The Atom x5-Z8500 is manufactured by Intel. It was released in 2 March 2015 (10 years ago). It is based on the Cherry Trail (2015−2016) architecture. It features 4 cores and 4 threads. Base frequency is 1.44 GHz, with boost up to 2.24 GHz. L3 cache: 0 kB. L2 cache: 2 MB. Built on 14 nm process technology. Socket: UTFCBGA1380. Memory support: DDR3. Passmark benchmark score: 1,242 points. Launch price was $69.
Processing Power
The Pentium G645T packs 2 cores / 2 threads, while the Atom x5-Z8500 offers 4 cores / 4 threads — the Atom x5-Z8500 has 2 more cores. Boost clocks reach 2.5 GHz on the Pentium G645T versus 2.24 GHz on the Atom x5-Z8500 — a 11% clock advantage for the Pentium G645T (base: 2.5 GHz vs 1.44 GHz). The Pentium G645T uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Atom x5-Z8500 uses Cherry Trail (2015−2016) (14 nm). In PassMark, the Pentium G645T scores 1,238 against the Atom x5-Z8500's 1,242 — a 0.3% lead for the Atom x5-Z8500. L3 cache: 3 MB (total) on the Pentium G645T vs 0 kB on the Atom x5-Z8500.
| Feature | Pentium G645T | Atom x5-Z8500 |
|---|---|---|
| Cores / Threads | 2 / 2 | 4 / 4+100% |
| Boost Clock | 2.5 GHz+12% | 2.24 GHz |
| Base Clock | 2.5 GHz+74% | 1.44 GHz |
| L3 Cache | 3 MB (total) | 0 kB |
| L2 Cache | 256 kB (per core) | 2 MB+700% |
| Process | 32 nm | 14 nm-56% |
| Architecture | Sandy Bridge (2011−2013) | Cherry Trail (2015−2016) |
| PassMark | 1,238 | 1,242 |
Memory & Platform
The Pentium G645T uses the LGA1155 socket (PCIe 2.0), while the Atom x5-Z8500 uses UTFCBGA1380 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Pentium G645T | Atom x5-Z8500 |
|---|---|---|
| Socket | LGA1155 | UTFCBGA1380 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
| Max RAM Speed | — | LPDDR3-1600 |
| Max RAM Capacity | — | 8 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 2 |
Advanced Features
The Atom x5-Z8500 includes integrated graphics (Intel HD Graphics (Cherry Trail)), while the Pentium G645T requires a dedicated GPU.
| Feature | Pentium G645T | Atom x5-Z8500 |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | Intel HD Graphics (Cherry Trail) |
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