Pentium G645T vs Core 2 Duo E6420
Pentium G645T
Core 2 Duo E6420
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 Core 2 Duo E6420 is on rank 1054, so the Pentium G645T 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 Core 2 Duo E6420
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Pentium G645T | Core 2 Duo E6420 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($15) | ✅ More affordable ($10) |
| Longevity | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) | 🛑 Legacy (Conroe (2006−2007) / 65 nm) |
💎 Value Proposition
| Insight | Pentium G645T | Core 2 Duo E6420 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+50%) |
| Upfront Cost | ⚠️ Higher cost ($15) | ✅ More affordable ($10) |
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 Core 2 Duo E6420
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.
Core 2 Duo E6420
The Core 2 Duo E6420 is manufactured by Intel. It was released in 2008-01-01. It is based on the Conroe (2006−2007) architecture. It features 2 cores and 2 threads. Base frequency is 2.13 GHz, with boost up to 2.13 GHz. L3 cache: 0 kB. L2 cache: 4 MB. Built on 65 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,235 points. Launch price was $249.
Processing Power
Both the Pentium G645T and Core 2 Duo E6420 share an identical 2-core/2-thread configuration. Boost clocks reach 2.5 GHz on the Pentium G645T versus 2.13 GHz on the Core 2 Duo E6420 — a 16% clock advantage for the Pentium G645T (base: 2.5 GHz vs 2.13 GHz). The Pentium G645T uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Core 2 Duo E6420 uses Conroe (2006−2007) (65 nm). In PassMark, the Pentium G645T scores 1,238 against the Core 2 Duo E6420's 1,235 — a 0.2% lead for the Pentium G645T. L3 cache: 3 MB (total) on the Pentium G645T vs 0 kB on the Core 2 Duo E6420.
| Feature | Pentium G645T | Core 2 Duo E6420 |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 2.5 GHz+17% | 2.13 GHz |
| Base Clock | 2.5 GHz+17% | 2.13 GHz |
| L3 Cache | 3 MB (total) | 0 kB |
| L2 Cache | 256 kB (per core) | 4 MB+1500% |
| Process | 32 nm-51% | 65 nm |
| Architecture | Sandy Bridge (2011−2013) | Conroe (2006−2007) |
| PassMark | 1,238 | 1,235 |
Memory & Platform
The Pentium G645T uses the LGA1155 socket (PCIe 2.0), while the Core 2 Duo E6420 uses LGA775 (PCIe 1.1) — making them incompatible on the same motherboard.
| Feature | Pentium G645T | Core 2 Duo E6420 |
|---|---|---|
| Socket | LGA1155 | LGA775 |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
| Max RAM Speed | — | 1066 |
| Max RAM Capacity | — | 16 |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 16 |
Advanced Features
Virtualization: not specified (Pentium G645T) / true (Core 2 Duo E6420). Direct competitor: Core 2 Duo E6420 rivals Athlon 64 X2 5400+.
| Feature | Pentium G645T | Core 2 Duo E6420 |
|---|---|---|
| Integrated GPU | — | No |
| IGPU Model | — | None |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | true |
Value Analysis
The Pentium G645T launched at $64 MSRP, while the Core 2 Duo E6420 debuted at $183. At current prices ($15 vs $10), the Core 2 Duo E6420 is $5 cheaper. In terms of value (PassMark points per dollar), the Pentium G645T delivers 82.5 pts/$ vs 123.5 pts/$ for the Core 2 Duo E6420 — making the Core 2 Duo E6420 the 39.8% better value option.
| Feature | Pentium G645T | Core 2 Duo E6420 |
|---|---|---|
| MSRP | $64-65% | $183 |
| Avg Price (30d) | $15 | $10-33% |
| Performance per Dollar | 82.5 | 123.5+50% |
| Release Date | 2012 | 2007 |
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