A6-6400K vs Core i3-2100T
A6-6400K
Core i3-2100T
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 Core i3-2100T is on rank 962, so the A6-6400K 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 Core i3-2100T
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | A6-6400K | Core i3-2100T |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($127) |
| Longevity | 🛑 Legacy (Richland (2013−2014) / 32 nm) | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) |
💎 Value Proposition
| Insight | A6-6400K | Core i3-2100T |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($127) |
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 Core i3-2100T
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.
Core i3-2100T
The Core i3-2100T is manufactured by Intel. It was released in 20 February 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 4 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: 1,531 points. Launch price was $180.
Processing Power
The A6-6400K packs 2 cores / 2 threads, matching the Core i3-2100T's 2 cores. Boost clocks reach 4.1 GHz on the A6-6400K versus 2.5 GHz on the Core i3-2100T — a 48.5% clock advantage for the A6-6400K (base: 3.9 GHz vs 2.5 GHz). The A6-6400K uses the Richland (2013−2014) architecture (32 nm), while the Core i3-2100T uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the A6-6400K scores 1,511 against the Core i3-2100T's 1,531 — a 1.3% lead for the Core i3-2100T. L3 cache: 0 kB on the A6-6400K vs 3 MB (total) on the Core i3-2100T.
| Feature | A6-6400K | Core i3-2100T |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 4 |
| Boost Clock | 4.1 GHz+64% | 2.5 GHz |
| Base Clock | 3.9 GHz+56% | 2.5 GHz |
| L3 Cache | 0 kB | 3 MB (total) |
| L2 Cache | 1024 kB+300% | 256 kB (per core) |
| Process | 32 nm | 32 nm |
| Architecture | Richland (2013−2014) | Sandy Bridge (2011−2013) |
| PassMark | 1,511 | 1,531+1% |
Memory & Platform
The A6-6400K uses the FM2 socket (PCIe 3.0), while the Core i3-2100T uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | A6-6400K | Core i3-2100T |
|---|---|---|
| Socket | FM2 | LGA1155 |
| PCIe Generation | PCIe 3.0+50% | PCIe 2.0 |
| Max RAM Speed | 1866 | — |
| Max RAM Capacity | 32 | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 16 | — |
Advanced Features
Virtualization: true (A6-6400K) / not specified (Core i3-2100T). The A6-6400K includes integrated graphics (Radeon HD 8470D), while the Core i3-2100T requires a dedicated GPU. Direct competitor: A6-6400K rivals Pentium G3258.
| Feature | A6-6400K | Core i3-2100T |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | Radeon HD 8470D | — |
| Unlocked | Yes | — |
| AVX-512 | No | — |
| Virtualization | true | — |
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