Pentium G645 vs Core i3-4020Y
Pentium G645
Core i3-4020Y
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 Core i3-4020Y is on rank 716, so the Core i3-4020Y 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 Core i3-4020Y
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Pentium G645 | Core i3-4020Y |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($15) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) | 🛑 Legacy (Haswell (2013−2015) / 22 nm) |
💎 Value Proposition
| Insight | Pentium G645 | Core i3-4020Y |
|---|---|---|
| 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 G645 and Core i3-4020Y
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.
Core i3-4020Y
The Core i3-4020Y is manufactured by Intel. It was released in 1 September 2013 (12 years ago). It is based on the Haswell (2013−2015) architecture. It features 2 cores and 4 threads. Base frequency is 1.5 GHz, with boost up to 1.5 GHz. L3 cache: 3 MB. L2 cache: 512 kB. Built on 22 nm process technology. Socket: FCBGA1168. Thermal design power (TDP): 11.5 Watt. Memory support: DDR3. Passmark benchmark score: 1,448 points. Launch price was $304.
Processing Power
The Pentium G645 packs 2 cores / 2 threads, matching the Core i3-4020Y's 2 cores. Boost clocks reach 2.9 GHz on the Pentium G645 versus 1.5 GHz on the Core i3-4020Y — a 63.6% clock advantage for the Pentium G645 (base: 2.9 GHz vs 1.5 GHz). The Pentium G645 uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Core i3-4020Y uses Haswell (2013−2015) (22 nm). In PassMark, the Pentium G645 scores 1,450 against the Core i3-4020Y's 1,448 — a 0.1% lead for the Pentium G645. L3 cache: 3 MB (total) on the Pentium G645 vs 3 MB on the Core i3-4020Y.
| Feature | Pentium G645 | Core i3-4020Y |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 4 |
| Boost Clock | 2.9 GHz+93% | 1.5 GHz |
| Base Clock | 2.9 GHz+93% | 1.5 GHz |
| L3 Cache | 3 MB (total) | 3 MB |
| L2 Cache | 256 kB (per core) | 512 kB+100% |
| Process | 32 nm | 22 nm-31% |
| Architecture | Sandy Bridge (2011−2013) | Haswell (2013−2015) |
| PassMark | 1,450 | 1,448 |
Memory & Platform
The Pentium G645 uses the LGA1155 socket (PCIe 2.0), while the Core i3-4020Y uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Pentium G645 | Core i3-4020Y |
|---|---|---|
| Socket | LGA1155 | FCBGA1168 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
| Max RAM Speed | — | 1600 |
| Max RAM Capacity | — | 16 |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 12 |
Advanced Features
Virtualization: not specified (Pentium G645) / true (Core i3-4020Y). The Core i3-4020Y includes integrated graphics (Intel HD Graphics 4200), while the Pentium G645 requires a dedicated GPU.
| Feature | Pentium G645 | Core i3-4020Y |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | Intel HD Graphics 4200 |
| AVX-512 | — | No |
| Virtualization | — | true |
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