Athlon II X4 645 vs A12-9700P
Athlon II X4 645
A12-9700P
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 Athlon II X4 645 is positioned at rank 819 and the A12-9700P is on rank 553, so the A12-9700P offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Athlon II X4 645
Performance Per Dollar A12-9700P
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon II X4 645 | A12-9700P |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($20) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Propus (2009−2011) / 45 nm) | 🛑 Legacy (Bristol Ridge (2016−2019) / 28 nm) |
💎 Value Proposition
| Insight | Athlon II X4 645 | A12-9700P |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($20) | ✅ 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 645 and A12-9700P
Athlon II X4 645
The Athlon II X4 645 is manufactured by AMD. It was released in 21 September 2010 (15 years ago). It is based on the Propus (2009−2011) architecture. It features 4 cores and 4 threads. Base frequency is 3.1 GHz, with boost up to 3.1 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 2,375 points. Launch price was $80.
A12-9700P
The A12-9700P is manufactured by AMD. It was released in 2014-01-01. It is based on the Bristol Ridge (2016−2019) architecture. It features 4 cores and 4 threads. Base frequency is 2.5 GHz, with boost up to 3.4 GHz. L2 cache: 2048 kB. Built on 28 nm process technology. Socket: FP4. Thermal design power (TDP): 2 MB. Memory support: DDR3, DDR4. Passmark benchmark score: 2,415 points. Launch price was $130.
Processing Power
Both the Athlon II X4 645 and A12-9700P share an identical 4-core/4-thread configuration. Boost clocks reach 3.1 GHz on the Athlon II X4 645 versus 3.4 GHz on the A12-9700P — a 9.2% clock advantage for the A12-9700P (base: 3.1 GHz vs 2.5 GHz). The Athlon II X4 645 uses the Propus (2009−2011) architecture (45 nm), while the A12-9700P uses Bristol Ridge (2016−2019) (28 nm). In PassMark, the Athlon II X4 645 scores 2,375 against the A12-9700P's 2,415 — a 1.7% lead for the A12-9700P. Geekbench 6 single-core — the metric most relevant to gaming — records 399 vs 481, a 18.6% lead for the A12-9700P that directly translates to higher frame rates.
| Feature | Athlon II X4 645 | A12-9700P |
|---|---|---|
| Cores / Threads | 4 / 4 | 4 / 4 |
| Boost Clock | 3.1 GHz | 3.4 GHz+10% |
| Base Clock | 3.1 GHz+24% | 2.5 GHz |
| L3 Cache | 0 kB | — |
| L2 Cache | 512 kB (per core) | 2048 kB+300% |
| Process | 45 nm | 28 nm-38% |
| Architecture | Propus (2009−2011) | Bristol Ridge (2016−2019) |
| PassMark | 2,375 | 2,415+2% |
| Cinebench R23 Multi | 1,374 | — |
| Geekbench 6 Single | 399 | 481+21% |
| Geekbench 6 Multi | 1,374 | — |
Memory & Platform
The Athlon II X4 645 uses the AM3 socket (PCIe 2.0), while the A12-9700P uses FP4 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Athlon II X4 645 versus DDR4-1866 on the A12-9700P — the A12-9700P supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 16 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Athlon II X4 645) vs 8 (A12-9700P) — the Athlon II X4 645 offers 8 more lanes for additional GPUs or NVMe drives.
| Feature | Athlon II X4 645 | A12-9700P |
|---|---|---|
| Socket | AM3 | FP4 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
| Max RAM Speed | DDR3-1333 | DDR4-1866+33% |
| Max RAM Capacity | 16 GB | 16 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16+100% | 8 |
Advanced Features
Virtualization support: Yes (Athlon II X4 645) vs AMD-V (A12-9700P). The A12-9700P includes integrated graphics (Radeon R7), while the Athlon II X4 645 requires a dedicated GPU. Primary use case: Athlon II X4 645 targets Desktop, A12-9700P targets Laptop. Direct competitor: A12-9700P rivals Core i5-6200U.
| Feature | Athlon II X4 645 | A12-9700P |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | Radeon R7 |
| Unlocked | — | No |
| AVX-512 | No | No |
| Virtualization | Yes | AMD-V |
| Target Use | Desktop | Laptop |
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