Athlon II X4 651 vs Pentium Gold G6400T
Athlon II X4 651
Pentium Gold G6400T
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 II X4 651 is positioned at rank #505 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 II X4 651
Performance Per Dollar
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon II X4 651 | Pentium Gold G6400T |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($92) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Llano (2011−2012) / 32 nm) | ✨ Modern (Legacy / 14 nm) |
💎 Value Proposition
| Insight | Athlon II X4 651 | Pentium Gold G6400T |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($92) | ✅ 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 II X4 651 and Pentium Gold G6400T
Athlon II X4 651
The Athlon II X4 651 is manufactured by AMD. It was released in 2009-01-01. It is based on the Llano (2011−2012) architecture. It features 4 cores and 4 threads. Base frequency is 3 GHz, with boost up to 3 GHz. L3 cache: 0 kB. L2 cache: 1 MB (per core). Built on 32 nm process technology. Socket: FM1. Thermal design power (TDP): 100 Watt. Memory support: DDR3. Passmark benchmark score: 3,584 points. Launch price was $149.
Pentium Gold G6400T
The Pentium Gold G6400T is manufactured by Intel. It was released in 2007-01-01. It features 2 cores and 4 threads. Base frequency: 3.4 GHz. L3 cache: 4 MB Intel® Smart Cache. Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 35 Watt. Memory support: DDR4-2666. Passmark benchmark score: 3,544 points. Launch price was $69.
Processing Power
The Athlon II X4 651 packs 4 cores / 4 threads, while the Pentium Gold G6400T offers 2 cores / 4 threads — the Athlon II X4 651 has 2 more cores. The Athlon II X4 651 is built on the Llano (2011−2012) architecture. In PassMark, the Athlon II X4 651 scores 3,584 against the Pentium Gold G6400T's 3,544 — a 1.1% lead for the Athlon II X4 651. L3 cache: 0 kB on the Athlon II X4 651 vs 4 MB Intel® Smart Cache on the Pentium Gold G6400T.
| Feature | Athlon II X4 651 | Pentium Gold G6400T |
|---|---|---|
| Cores / Threads | 4 / 4+100% | 2 / 4 |
| Boost Clock | 3 GHz | — |
| Base Clock | 3 GHz | 3.4 GHz+13% |
| L3 Cache | 0 kB | 4 MB Intel® Smart Cache |
| L2 Cache | 1 MB (per core) | — |
| Process | 32 nm | 14 nm-56% |
| Architecture | Llano (2011−2012) | — |
| PassMark | 3,584+1% | 3,544 |
Memory & Platform
The Athlon II X4 651 uses the FM1 socket (PCIe 2.0), while the Pentium Gold G6400T uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Athlon II X4 651 | Pentium Gold G6400T |
|---|---|---|
| Socket | FM1 | LGA1200 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
| Max RAM Speed | DDR3-1866 | — |
| Max RAM Capacity | 16 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 16 | — |
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