Radeon R4E vs Radeon R5 M420
Radeon R4E
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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 R4E is positioned at rank 235 and the Radeon R5 M420 is on rank 663, so the Radeon R4E offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Radeon R4E
Performance Per Dollar Radeon R5 M420
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Radeon R5 M420 is the superior choice for raw performance. It leads with a 3.5% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon R4E.
| Insight | Radeon R4E | Radeon R5 M420 |
|---|---|---|
| Performance | ❌Lower raw frame rates (-3.5%) | ✅Leading raw performance (+3.5%) |
| Longevity | 🛑Obsolete Architecture (2017 / GCN 4.0 (2016−2020)) | 🛑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 R4E offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the Radeon R4E holds the technical lead. Priced at $20 (vs $300), it costs 93% less, resulting in a 1349.4% higher cost efficiency score.
| Insight | Radeon R4E | Radeon R5 M420 |
|---|---|---|
| Cost Efficiency | ✅Better overall value (+1349.4%) | ❌Lower cost efficiency |
| Upfront Cost | ✅More affordable ($20) | ⚠️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 R4E and Radeon R5 M420
Radeon R4E
The Radeon R4E is manufactured by AMD. It was released in April 20 2017. It features the GCN 4.0 architecture. The core clock ranges from 1183 MHz to 1124 MHz. It has 384 shading units. The thermal design power (TDP) is 50W. Manufactured using 14 nm process technology. G3D Mark benchmark score: 487 points. Launch price was $79.
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 R4E scores 487 and the Radeon R5 M420 reaches 504 in the G3D Mark benchmark — just a 3.5% difference, making them near-identical in rasterization performance. The Radeon R4E is built on GCN 4.0 while the Radeon R5 M420 uses GCN 2.0, both on 14 nm vs 28 nm. Shader units: 384 (Radeon R4E) vs 768 (Radeon R5 M420). Raw compute: 0.9085 TFLOPS (Radeon R4E) vs 1.536 TFLOPS (Radeon R5 M420). Boost clocks: 1124 MHz vs 1000 MHz.
| Feature | Radeon R4E | Radeon R5 M420 |
|---|---|---|
| G3D Mark Score | 487 | 504+3% |
| Architecture | GCN 4.0 | GCN 2.0 |
| Process Node | 14 nm | 28 nm |
| Shading Units | 384 | 768+100% |
| Compute (TFLOPS) | 0.9085 TFLOPS | 1.536 TFLOPS+69% |
| Boost Clock | 1124 MHz+12% | 1000 MHz |
| ROPs | 16 | 16 |
| TMUs | 24 | 48+100% |
| L1 Cache | 96 KB | 192 KB+100% |
| L2 Cache | 512 KB+100% | 256 KB |
Advanced Features (DLSS/FSR)
| Feature | Radeon R4E | 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: 64-bit vs 128-bit. L2 Cache: 512 KB (Radeon R4E) vs 256 KB (Radeon R5 M420) — the Radeon R4E has significantly larger on-die cache to reduce VRAM reliance.
| Feature | Radeon R4E | Radeon R5 M420 |
|---|---|---|
| VRAM Capacity | 0.5 GB | 0.5 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 64-bit | 128-bit+100% |
| L2 Cache | 512 KB+100% | 256 KB |
Power & Dimensions
The Radeon R4E draws 50W versus the Radeon R5 M420's 75W — a 40% difference. The Radeon R4E is more power-efficient. Recommended PSU: 350W (Radeon R4E) vs 350W (Radeon R5 M420). Power connectors: None vs Mobile.
| Feature | Radeon R4E | Radeon R5 M420 |
|---|---|---|
| TDP | 50W-33% | 75W |
| Recommended PSU | 350W | 350W |
| Power Connector | None | Mobile |
| Length | — | 0mm |
| Height | — | 0mm |
| Slots | — | 0 |
| Temp (Load) | — | 80 |
| Perf/Watt | 9.7+45% | 6.7 |
Value Analysis
The Radeon R4E launched at $100 MSRP and currently averages $20, while the Radeon R5 M420 launched at $300 and now averages $300. The Radeon R4E costs 93.3% less ($280 savings) at current market prices. Performance per dollar (G3D Mark / price): 24.4 (Radeon R4E) vs 1.7 (Radeon R5 M420) — the Radeon R4E offers 1335.3% better value. The Radeon R4E is the newer GPU (2017 vs 2016).
| Feature | Radeon R4E | Radeon R5 M420 |
|---|---|---|
| MSRP | $100-67% | $300 |
| Avg Price (30d) | $20-93% | $300 |
| Performance per Dollar | 24.4+1335% | 1.7 |
| Codename | Lexa | Emerald |
| Release | April 20 2017 | May 15 2016 |
| Ranking | #773 | #649 |
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