Radeon HD 7660D vs Radeon R5 M420
Radeon HD 7660D
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Radeon R5 M420
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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 HD 7660D is positioned at rank 513 and the Radeon R5 M420 is on rank 663, so the Radeon HD 7660D offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Radeon HD 7660D
Performance Per Dollar Radeon R5 M420
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Radeon HD 7660D is the superior choice for raw performance. It leads with a 1.6% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon R5 M420.
| Insight | Radeon HD 7660D | Radeon R5 M420 |
|---|---|---|
| Performance | ✅Leading raw performance (+1.6%) | ❌Lower raw frame rates (-1.6%) |
| Longevity | 🛑Obsolete Architecture (2012 / TeraScale 2 (2009−2015)) | 🛑Obsolete Architecture (2016 / GCN 2.0 (2013−2017)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+0%) |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | — | — |
💎 Value Proposition
The Radeon HD 7660D offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the Radeon HD 7660D holds the technical lead. Priced at $15 (vs $300), it costs 95% less, resulting in a 1931.7% higher cost efficiency score.
| Insight | Radeon HD 7660D | Radeon R5 M420 |
|---|---|---|
| Cost Efficiency | ✅Better overall value (+1931.7%) | ❌Lower cost efficiency |
| Upfront Cost | ✅More affordable ($15) | ⚠️Higher upfront cost ($300) |
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 HD 7660D and Radeon R5 M420
Radeon HD 7660D
The Radeon HD 7660D is manufactured by AMD. It was released in January 5 2012. It features the TeraScale 2 architecture. The core clock speed is 600 MHz. It has 480 shading units. The thermal design power (TDP) is 45W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 512 points.
Radeon R5 M420
The Radeon R5 M420 is manufactured by AMD. It was released in May 15 2016. It features the GCN 2.0 architecture. The core clock ranges from 900 MHz to 1000 MHz. It has 768 shading units. The thermal design power (TDP) is 75W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 504 points.
Graphics Performance
The Radeon HD 7660D scores 512 and the Radeon R5 M420 reaches 504 in the G3D Mark benchmark — just a 1.6% difference, making them near-identical in rasterization performance. The Radeon HD 7660D is built on TeraScale 2 while the Radeon R5 M420 uses GCN 2.0, both on 40 nm vs 28 nm. Shader units: 480 (Radeon HD 7660D) vs 768 (Radeon R5 M420). Raw compute: 0.576 TFLOPS (Radeon HD 7660D) vs 1.536 TFLOPS (Radeon R5 M420).
| Feature | Radeon HD 7660D | Radeon R5 M420 |
|---|---|---|
| G3D Mark Score | 512+2% | 504 |
| Architecture | TeraScale 2 | GCN 2.0 |
| Process Node | 40 nm | 28 nm |
| Shading Units | 480 | 768+60% |
| Compute (TFLOPS) | 0.576 TFLOPS | 1.536 TFLOPS+167% |
| ROPs | 8 | 16+100% |
| TMUs | 24 | 48+100% |
| L1 Cache | 48 KB | 192 KB+300% |
| L2 Cache | 256 KB | 256 KB |
Advanced Features (DLSS/FSR)
| Feature | Radeon HD 7660D | Radeon R5 M420 |
|---|---|---|
| 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 | AMD Anti-Lag |
Video Memory (VRAM)
Both cards feature 512 MB of GDDR5. Bus width: 128-bit vs 128-bit.
| Feature | Radeon HD 7660D | Radeon R5 M420 |
|---|---|---|
| VRAM Capacity | 0.5 GB | 0.5 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 128-bit | 128-bit |
| L2 Cache | 256 KB | 256 KB |
Display & API Support
DirectX support: 11 (11_2) (Radeon HD 7660D) vs 12 (11_1) (Radeon R5 M420). OpenGL: 4.4 vs 4.6. Maximum simultaneous displays: 3 vs 2.
| Feature | Radeon HD 7660D | Radeon R5 M420 |
|---|---|---|
| DirectX | 11 (11_2) | 12 (11_1)+9% |
| OpenGL | 4.4 | 4.6+5% |
| Max Displays | 3+50% | 2 |
Media & Encoding
Hardware encoder: VCE 1.0 (Radeon HD 7660D) vs VCE 1.0 (Radeon R5 M420). Decoder: UVD 3 vs UVD 4.0. Supported codecs: H.264,VC-1,MPEG-2,MPEG-4 (Radeon HD 7660D) vs H.264,MPEG-4,VC-1,MPEG-2 (Radeon R5 M420).
| Feature | Radeon HD 7660D | Radeon R5 M420 |
|---|---|---|
| Encoder | VCE 1.0 | VCE 1.0 |
| Decoder | UVD 3 | UVD 4.0 |
| Codecs | H.264,VC-1,MPEG-2,MPEG-4 | H.264,MPEG-4,VC-1,MPEG-2 |
Power & Dimensions
The Radeon HD 7660D draws 45W versus the Radeon R5 M420's 75W — a 50% difference. The Radeon HD 7660D is more power-efficient. Recommended PSU: 350W (Radeon HD 7660D) vs 350W (Radeon R5 M420). Power connectors: 1x 6-pin vs Mobile. Typical load temperature: 70°C vs 80.
| Feature | Radeon HD 7660D | Radeon R5 M420 |
|---|---|---|
| TDP | 45W-40% | 75W |
| Recommended PSU | 350W | 350W |
| Power Connector | 1x 6-pin | Mobile |
| Length | — | 0mm |
| Height | — | 0mm |
| Slots | 0 | 0 |
| Temp (Load) | 70°C-13% | 80 |
| Perf/Watt | 11.4+70% | 6.7 |
Value Analysis
The Radeon HD 7660D launched at $122 MSRP and currently averages $15, while the Radeon R5 M420 launched at $300 and now averages $300. The Radeon HD 7660D costs 95% less ($285 savings) at current market prices. Performance per dollar (G3D Mark / price): 34.1 (Radeon HD 7660D) vs 1.7 (Radeon R5 M420) — the Radeon HD 7660D offers 1905.9% better value. The Radeon R5 M420 is the newer GPU (2016 vs 2012).
| Feature | Radeon HD 7660D | Radeon R5 M420 |
|---|---|---|
| MSRP | $122-59% | $300 |
| Avg Price (30d) | $15-95% | $300 |
| Performance per Dollar | 34.1+1906% | 1.7 |
| Codename | Turks | Emerald |
| Release | January 5 2012 | May 15 2016 |
| Ranking | #870 | #649 |
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