Core i3-4020Y vs Pentium G645
Core i3-4020Y
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 Core i3-4020Y is positioned at rank 716 and the Pentium G645 is on rank 838, 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 Core i3-4020Y
Performance Per Dollar Pentium G645
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i3-4020Y | Pentium G645 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($15) |
| Longevity | 🛑 Legacy (Haswell (2013−2015) / 22 nm) | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) |
💎 Value Proposition
| Insight | Core i3-4020Y | Pentium G645 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($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 Core i3-4020Y and Pentium G645
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.
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 Core i3-4020Y packs 2 cores / 4 threads, matching the Pentium G645's 2 cores. Boost clocks reach 1.5 GHz on the Core i3-4020Y versus 2.9 GHz on the Pentium G645 — a 63.6% clock advantage for the Pentium G645 (base: 1.5 GHz vs 2.9 GHz). The Core i3-4020Y uses the Haswell (2013−2015) architecture (22 nm), while the Pentium G645 uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Core i3-4020Y scores 1,448 against the Pentium G645's 1,450 — a 0.1% lead for the Pentium G645. L3 cache: 3 MB on the Core i3-4020Y vs 3 MB (total) on the Pentium G645.
| Feature | Core i3-4020Y | Pentium G645 |
|---|---|---|
| Cores / Threads | 2 / 4 | 2 / 2 |
| Boost Clock | 1.5 GHz | 2.9 GHz+93% |
| Base Clock | 1.5 GHz | 2.9 GHz+93% |
| L3 Cache | 3 MB | 3 MB (total) |
| L2 Cache | 512 kB+100% | 256 kB (per core) |
| Process | 22 nm-31% | 32 nm |
| Architecture | Haswell (2013−2015) | Sandy Bridge (2011−2013) |
| PassMark | 1,448 | 1,450 |
Memory & Platform
The Core i3-4020Y uses the FCBGA1168 socket (PCIe 3.0), while the Pentium G645 uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Core i3-4020Y | Pentium G645 |
|---|---|---|
| Socket | FCBGA1168 | LGA1155 |
| PCIe Generation | PCIe 3.0+50% | PCIe 2.0 |
| Max RAM Speed | 1600 | — |
| Max RAM Capacity | 16 | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 12 | — |
Advanced Features
Virtualization: true (Core i3-4020Y) / not specified (Pentium G645). The Core i3-4020Y includes integrated graphics (Intel HD Graphics 4200), while the Pentium G645 requires a dedicated GPU.
| Feature | Core i3-4020Y | Pentium G645 |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | Intel HD Graphics 4200 | — |
| AVX-512 | No | — |
| Virtualization | true | — |
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