Athlon X4 840 vs Pentium Gold G5420T
Athlon X4 840
Pentium Gold G5420T
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. The Athlon X4 840 is positioned at rank #563 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Athlon X4 840
Performance Per Dollar
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon X4 840 | Pentium Gold G5420T |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($25) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Kaveri (2014−2015) / 28 nm) | ✨ Modern (Coffee Lake (2017−2019) / 14 nm) |
💎 Value Proposition
| Insight | Athlon X4 840 | Pentium Gold G5420T |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($25) | ✅ 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 Athlon X4 840 and Pentium Gold G5420T
Athlon X4 840
The Athlon X4 840 is manufactured by AMD. It was released in 2009-01-01. It is based on the Kaveri (2014−2015) architecture. It features 4 cores and 4 threads. Base frequency is 3.1 GHz, with boost up to 3.8 GHz. L2 cache: 4 MB. Built on 28 nm process technology. Socket: FM2+. Thermal design power (TDP): 65 watt. Memory support: DDR3. Passmark benchmark score: 3,331 points. Launch price was $149.
Pentium Gold G5420T
The Pentium Gold G5420T is manufactured by Intel. It was released in 23 April 2019 (6 years ago). It is based on the Coffee Lake (2017−2019) architecture. It features 2 cores and 4 threads. Base frequency is 3.2 GHz, with boost up to 3.2 GHz. L3 cache: 4 MB. L2 cache: 512 kB. Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 35 Watt. Memory support: DDR4-2400. Passmark benchmark score: 3,370 points. Launch price was $64.
Processing Power
The Athlon X4 840 packs 4 cores / 4 threads, while the Pentium Gold G5420T offers 2 cores / 4 threads — the Athlon X4 840 has 2 more cores. Boost clocks reach 3.8 GHz on the Athlon X4 840 versus 3.2 GHz on the Pentium Gold G5420T — a 17.1% clock advantage for the Athlon X4 840 (base: 3.1 GHz vs 3.2 GHz). The Athlon X4 840 uses the Kaveri (2014−2015) architecture (28 nm), while the Pentium Gold G5420T uses Coffee Lake (2017−2019) (14 nm). In PassMark, the Athlon X4 840 scores 3,331 against the Pentium Gold G5420T's 3,370 — a 1.2% lead for the Pentium Gold G5420T.
| Feature | Athlon X4 840 | Pentium Gold G5420T |
|---|---|---|
| Cores / Threads | 4 / 4+100% | 2 / 4 |
| Boost Clock | 3.8 GHz+19% | 3.2 GHz |
| Base Clock | 3.1 GHz | 3.2 GHz+3% |
| L3 Cache | — | 4 MB |
| L2 Cache | 4 MB+700% | 512 kB |
| Process | 28 nm | 14 nm-50% |
| Architecture | Kaveri (2014−2015) | Coffee Lake (2017−2019) |
| PassMark | 3,331 | 3,370+1% |
Memory & Platform
The Athlon X4 840 uses the FM2+ socket (PCIe 3.0), while the Pentium Gold G5420T uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Athlon X4 840 | Pentium Gold G5420T |
|---|---|---|
| Socket | FM2+ | LGA1151 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | DDR3-2133 | — |
| Max RAM Capacity | 64 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 16 | — |
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