A6-6400K vs Pentium 2129Y
A6-6400K
Pentium 2129Y
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 A6-6400K is positioned at rank 688 and the Pentium 2129Y is on rank 590, so the Pentium 2129Y offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar A6-6400K
Performance Per Dollar Pentium 2129Y
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | A6-6400K | Pentium 2129Y |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Richland (2013−2014) / 32 nm) | 🛑 Legacy (Ivy Bridge (2012−2013) / 22 nm) |
💎 Value Proposition
| Insight | A6-6400K | Pentium 2129Y |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
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 A6-6400K and Pentium 2129Y
A6-6400K
The A6-6400K is manufactured by AMD. It was released in 2014-01-01. It is based on the Richland (2013−2014) architecture. It features 2 cores and 2 threads. Base frequency is 3.9 GHz, with boost up to 4.1 GHz. L3 cache: 0 kB. L2 cache: 1024 kB. Built on 32 nm process technology. Socket: FM2. Thermal design power (TDP): 65 Watt. Memory support: DDR3-1866. Passmark benchmark score: 1,511 points. Launch price was $70.
Pentium 2129Y
The Pentium 2129Y is manufactured by Intel. It was released in 1 September 2012 (13 years ago). It is based on the Ivy Bridge (2012−2013) architecture. It features 2 cores and 2 threads. Base frequency is 1.1 GHz, with boost up to 1.1 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: BGA1023. Thermal design power (TDP): 10 Watt. Memory support: DDR3. Passmark benchmark score: 1,502 points. Launch price was $150.
Processing Power
Both the A6-6400K and Pentium 2129Y share an identical 2-core/2-thread configuration. Boost clocks reach 4.1 GHz on the A6-6400K versus 1.1 GHz on the Pentium 2129Y — a 115.4% clock advantage for the A6-6400K (base: 3.9 GHz vs 1.1 GHz). The A6-6400K uses the Richland (2013−2014) architecture (32 nm), while the Pentium 2129Y uses Ivy Bridge (2012−2013) (22 nm). In PassMark, the A6-6400K scores 1,511 against the Pentium 2129Y's 1,502 — a 0.6% lead for the A6-6400K. L3 cache: 0 kB on the A6-6400K vs 2 MB (total) on the Pentium 2129Y.
| Feature | A6-6400K | Pentium 2129Y |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 4.1 GHz+273% | 1.1 GHz |
| Base Clock | 3.9 GHz+255% | 1.1 GHz |
| L3 Cache | 0 kB | 2 MB (total) |
| L2 Cache | 1024 kB+300% | 256K (per core) |
| Process | 32 nm | 22 nm-31% |
| Architecture | Richland (2013−2014) | Ivy Bridge (2012−2013) |
| PassMark | 1,511 | 1,502 |
Memory & Platform
The A6-6400K uses the FM2 socket (PCIe 3.0), while the Pentium 2129Y uses BGA1023 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | A6-6400K | Pentium 2129Y |
|---|---|---|
| Socket | FM2 | BGA1023 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | 1866 | — |
| Max RAM Capacity | 32 | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 16 | — |
Advanced Features
Virtualization: true (A6-6400K) / not specified (Pentium 2129Y). The A6-6400K includes integrated graphics (Radeon HD 8470D), while the Pentium 2129Y requires a dedicated GPU. Direct competitor: A6-6400K rivals Pentium G3258.
| Feature | A6-6400K | Pentium 2129Y |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | Radeon HD 8470D | — |
| Unlocked | Yes | — |
| AVX-512 | No | — |
| Virtualization | true | — |
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