FX-6120 vs Pentium Gold G6405
FX-6120
Pentium Gold G6405
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 FX-6120 is positioned at rank #787 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 FX-6120
Performance Per Dollar
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | FX-6120 | Pentium Gold G6405 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($54) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Zambezi (2011−2012) / 32 nm) | ✨ Modern (Comet Lake-R (2021) / 14 nm) |
💎 Value Proposition
| Insight | FX-6120 | Pentium Gold G6405 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($54) | ✅ 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 FX-6120 and Pentium Gold G6405
FX-6120
The FX-6120 is manufactured by AMD. It was released in 23 October 2012 (13 years ago). It is based on the Zambezi (2011−2012) architecture. It features 6 cores and 6 threads. Base frequency is 3.6 GHz, with boost up to 4.2 GHz. L3 cache: 8 MB (total). L2 cache: 6 MB. Built on 32 nm process technology. Socket: AM3+. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 3,853 points. Launch price was $69.
Pentium Gold G6405
The Pentium Gold G6405 is manufactured by Intel. It was released in 16 March 2021 (4 years ago). It is based on the Comet Lake-R (2021) architecture. It features 2 cores and 4 threads. Base frequency is 4.1 GHz, with boost up to 4.1 GHz. L3 cache: 4 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 15 Watt. Memory support: DDR4-2666. Passmark benchmark score: 3,817 points. Launch price was $64.
Processing Power
The FX-6120 packs 6 cores / 6 threads, while the Pentium Gold G6405 offers 2 cores / 4 threads — the FX-6120 has 4 more cores. Boost clocks reach 4.2 GHz on the FX-6120 versus 4.1 GHz on the Pentium Gold G6405 — a 2.4% clock advantage for the FX-6120 (base: 3.6 GHz vs 4.1 GHz). The FX-6120 uses the Zambezi (2011−2012) architecture (32 nm), while the Pentium Gold G6405 uses Comet Lake-R (2021) (14 nm). In PassMark, the FX-6120 scores 3,853 against the Pentium Gold G6405's 3,817 — a 0.9% lead for the FX-6120. L3 cache: 8 MB (total) on the FX-6120 vs 4 MB (total) on the Pentium Gold G6405.
| Feature | FX-6120 | Pentium Gold G6405 |
|---|---|---|
| Cores / Threads | 6 / 6+200% | 2 / 4 |
| Boost Clock | 4.2 GHz+2% | 4.1 GHz |
| Base Clock | 3.6 GHz | 4.1 GHz+14% |
| L3 Cache | 8 MB (total)+100% | 4 MB (total) |
| L2 Cache | 6 MB+2300% | 256 kB (per core) |
| Process | 32 nm | 14 nm-56% |
| Architecture | Zambezi (2011−2012) | Comet Lake-R (2021) |
| PassMark | 3,853 | 3,817 |
Memory & Platform
The FX-6120 uses the AM3+ socket (PCIe 2.0), while the Pentium Gold G6405 uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | FX-6120 | Pentium Gold G6405 |
|---|---|---|
| Socket | AM3+ | LGA1200 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
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The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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