CPU
GPU
Radeon R7 A8-8650
Popular choices:
Quadro K420
Popular choices:
Performance Spectrum - GPU
About G3D Mark
G3D Mark is a standard benchmark that measures graphics performance in real-world gaming scenarios. It simplifies comparing cards from different brands, where higher scores directly correlate with better fps and smoother gaming experiences.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (G3D Mark) per dollar. Components placed above yours deliver better value for money. The Radeon R7 A8-8650 is positioned at rank 309 and the Quadro K420 is on rank 220, so the Quadro K420 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Radeon R7 A8-8650
Performance Per Dollar Quadro K420
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Quadro K420 is the superior choice for raw performance. It leads with a 1% higher G3D Mark score and 100% more VRAM (1 GB vs 512 MB). This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon R7 A8-8650.
| Insight | Radeon R7 A8-8650 | Quadro K420 |
|---|---|---|
| Performance | ❌Lower raw frame rates (-1%) | ✅Leading raw performance (+1%) |
| Longevity | 🛑Obsolete Architecture (2014 / GCN 1.0 (2012−2020)) | 🛑Obsolete Architecture (2014 / Kepler (2012−2018)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+100%) |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | — | — |
💎 Value Proposition
The Quadro K420 offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the Quadro K420 holds the technical lead. Priced at $20 (vs $20), it costs 0% less, resulting in a 1% higher cost efficiency score.
| Insight | Radeon R7 A8-8650 | Quadro K420 |
|---|---|---|
| Cost Efficiency | ❌Lower cost efficiency | ✅Better overall value (+1%) |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
Performance Check
Real-world benchmarks and performance projections based on comprehensive hardware analysis and comparative metrics. Values represent expected performance on High/Ultra settings at 1080p, 1440p, and 4K. Modeled using a Ryzen 7 7800X3D reference profile to minimize specific CPU bottlenecks.
Note: Performance behavior can vary per game. Specific architectures may perform better or worse depending on game engine optimizations and API implementation.
Technical Specifications
Side-by-side comparison of Radeon R7 A8-8650 and Quadro K420
Radeon R7 A8-8650
The Radeon R7 A8-8650 is manufactured by AMD. It was released in January 9 2014. It features the GCN 1.0 architecture. The core clock ranges from 725 MHz to 825 MHz. It has 384 shading units. The thermal design power (TDP) is 30W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 719 points.
Quadro K420
The Quadro K420 is manufactured by NVIDIA. It was released in July 22 2014. It features the Kepler architecture. The core clock ranges from 771 MHz to 784 MHz. It has 1344 shading units. The thermal design power (TDP) is 108W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 726 points. Launch price was $854.99.
Graphics Performance
The Radeon R7 A8-8650 scores 719 and the Quadro K420 reaches 726 in the G3D Mark benchmark — just a 1% difference, making them near-identical in rasterization performance. The Radeon R7 A8-8650 is built on GCN 1.0 while the Quadro K420 uses Kepler, both on a 28 nm process. Shader units: 384 (Radeon R7 A8-8650) vs 1,344 (Quadro K420). Raw compute: 0.6336 TFLOPS (Radeon R7 A8-8650) vs 2.107 TFLOPS (Quadro K420). Boost clocks: 825 MHz vs 784 MHz.
| Feature | Radeon R7 A8-8650 | Quadro K420 |
|---|---|---|
| G3D Mark Score | 719 | 726 |
| Architecture | GCN 1.0 | Kepler |
| Process Node | 28 nm | 28 nm |
| Shading Units | 384 | 1344+250% |
| Compute (TFLOPS) | 0.6336 TFLOPS | 2.107 TFLOPS+233% |
| Boost Clock | 825 MHz+5% | 784 MHz |
| ROPs | 8 | 32+300% |
| TMUs | 24 | 112+367% |
| L1 Cache | 96 KB | 112 KB+17% |
| L2 Cache | 256 KB | 512 KB+100% |
Advanced Features (DLSS/FSR)
| Feature | Radeon R7 A8-8650 | Quadro K420 |
|---|---|---|
| Upscaling Tech | FSR 1.0 (Software) | FSR 1.0 (Software) |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | AMD Anti-Lag | Standard |
Video Memory (VRAM)
The Radeon R7 A8-8650 comes with 512 MB of VRAM, while the Quadro K420 has 1 GB. The Quadro K420 offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 64-bit. L2 Cache: 256 KB (Radeon R7 A8-8650) vs 512 KB (Quadro K420) — the Quadro K420 has significantly larger on-die cache to reduce VRAM reliance.
| Feature | Radeon R7 A8-8650 | Quadro K420 |
|---|---|---|
| VRAM Capacity | 0.5 GB | 1 GB+100% |
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit+100% | 64-bit |
| L2 Cache | 256 KB | 512 KB+100% |
Power & Dimensions
The Radeon R7 A8-8650 draws 30W versus the Quadro K420's 108W — a 113% difference. The Radeon R7 A8-8650 is more power-efficient. Recommended PSU: 350W (Radeon R7 A8-8650) vs 350W (Quadro K420). Power connectors: PCIe-powered vs PCIe-powered.
| Feature | Radeon R7 A8-8650 | Quadro K420 |
|---|---|---|
| TDP | 30W-72% | 108W |
| Recommended PSU | 350W | 350W |
| Power Connector | PCIe-powered | PCIe-powered |
| Length | 0mm | — |
| Height | 0mm | — |
| Slots | 0 | — |
| Temp (Load) | 72 | — |
| Perf/Watt | 24.0+258% | 6.7 |
Value Analysis
The Radeon R7 A8-8650 launched at $49 MSRP and currently averages $20, while the Quadro K420 launched at $150 and now averages $20. Performance per dollar (G3D Mark / price): 36.0 (Radeon R7 A8-8650) vs 36.3 (Quadro K420) — the Quadro K420 offers 0.8% better value.
| Feature | Radeon R7 A8-8650 | Quadro K420 |
|---|---|---|
| MSRP | $49-67% | $150 |
| Avg Price (30d) | $20 | $20 |
| Performance per Dollar | 36.0 | 36.3 |
| Codename | Opal | GK104 |
| Release | January 9 2014 | July 22 2014 |
| Ranking | #890 | #475 |
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