Radeon HD 6620G vs Radeon HD 8450G
Radeon HD 6620G
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Radeon HD 8450G
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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 6620G is positioned at rank 423 and the Radeon HD 8450G is on rank 186, so the Radeon HD 8450G 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 6620G
Performance Per Dollar Radeon HD 8450G
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Radeon HD 6620G is the superior choice for raw performance. It leads with a 2.1% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon HD 8450G.
| Insight | Radeon HD 6620G | Radeon HD 8450G |
|---|---|---|
| Performance | ✅Leading raw performance (+2.1%) | ❌Lower raw frame rates (-2.1%) |
| Longevity | 🛑Obsolete Architecture (2011 / TeraScale 2 (2009−2015)) | 🛑Obsolete Architecture (2012 / GCN 1.0 (2012−2020)) |
| 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 6620G offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the Radeon HD 6620G holds the technical lead. Priced at $10 (vs $50), it costs 80% less, resulting in a 410.5% higher cost efficiency score.
| Insight | Radeon HD 6620G | Radeon HD 8450G |
|---|---|---|
| Cost Efficiency | ✅Better overall value (+410.5%) | ❌Lower cost efficiency |
| Upfront Cost | ✅More affordable ($10) | ⚠️Higher upfront cost ($50) |
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 6620G and Radeon HD 8450G
Radeon HD 6620G
The Radeon HD 6620G is manufactured by AMD. It was released in April 19 2011. 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: 341 points.
Radeon HD 8450G
The Radeon HD 8450G is manufactured by AMD. It was released in March 5 2012. It features the GCN 1.0 architecture. The boost clock speed is 1000 MHz. It has 1024 shading units. The thermal design power (TDP) is 130W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 334 points. Launch price was $249.
Graphics Performance
The Radeon HD 6620G scores 341 and the Radeon HD 8450G reaches 334 in the G3D Mark benchmark — just a 2.1% difference, making them near-identical in rasterization performance. The Radeon HD 6620G is built on TeraScale 2 while the Radeon HD 8450G uses GCN 1.0, both on 40 nm vs 28 nm. Shader units: 480 (Radeon HD 6620G) vs 1,024 (Radeon HD 8450G). Raw compute: 0.576 TFLOPS (Radeon HD 6620G) vs 1.761 TFLOPS (Radeon HD 8450G).
| Feature | Radeon HD 6620G | Radeon HD 8450G |
|---|---|---|
| G3D Mark Score | 341+2% | 334 |
| Architecture | TeraScale 2 | GCN 1.0 |
| Process Node | 40 nm | 28 nm |
| Shading Units | 480 | 1024+113% |
| Compute (TFLOPS) | 0.576 TFLOPS | 1.761 TFLOPS+206% |
| ROPs | 8 | 32+300% |
| TMUs | 24 | 64+167% |
| L1 Cache | 48 KB | 256 KB+433% |
| L2 Cache | 256 KB | 512 KB+100% |
Advanced Features (DLSS/FSR)
| Feature | Radeon HD 6620G | Radeon HD 8450G |
|---|---|---|
| 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. L2 Cache: 256 KB (Radeon HD 6620G) vs 512 KB (Radeon HD 8450G) — the Radeon HD 8450G has significantly larger on-die cache to reduce VRAM reliance.
| Feature | Radeon HD 6620G | Radeon HD 8450G |
|---|---|---|
| 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 | 512 KB+100% |
Display & API Support
DirectX support: 11 (Radeon HD 6620G) vs 11 (11_0) (Radeon HD 8450G). OpenGL: 4.4 vs 4.4. Maximum simultaneous displays: 2 vs 2.
| Feature | Radeon HD 6620G | Radeon HD 8450G |
|---|---|---|
| DirectX | 11 | 11 (11_0) |
| OpenGL | 4.4 | 4.4 |
| Max Displays | 2 | 2 |
Media & Encoding
Decoder: UVD 3 vs UVD 3. Supported codecs: H.264,VC-1,MPEG-2 (Radeon HD 6620G) vs H.264,VC-1,MPEG-2,DivX (Radeon HD 8450G).
| Feature | Radeon HD 6620G | Radeon HD 8450G |
|---|---|---|
| Encoder | — | No |
| Decoder | UVD 3 | UVD 3 |
| Codecs | H.264,VC-1,MPEG-2 | H.264,VC-1,MPEG-2,DivX |
Power & Dimensions
The Radeon HD 6620G draws 45W versus the Radeon HD 8450G's 130W — a 97.1% difference. The Radeon HD 6620G is more power-efficient. Recommended PSU: 350W (Radeon HD 6620G) vs 350W (Radeon HD 8450G). Power connectors: 1x 6-pin vs 1x 6-pin. Typical load temperature: 75°C vs 70°C.
| Feature | Radeon HD 6620G | Radeon HD 8450G |
|---|---|---|
| TDP | 45W-65% | 130W |
| Recommended PSU | 350W | 350W |
| Power Connector | 1x 6-pin | 1x 6-pin |
| Slots | — | 0 |
| Temp (Load) | 75°C | 70°C-7% |
| Perf/Watt | 7.6+192% | 2.6 |
Value Analysis
The Radeon HD 6620G launched at $50 MSRP and currently averages $10, while the Radeon HD 8450G launched at $50 and now averages $50. The Radeon HD 6620G costs 80% less ($40 savings) at current market prices. Performance per dollar (G3D Mark / price): 34.1 (Radeon HD 6620G) vs 6.7 (Radeon HD 8450G) — the Radeon HD 6620G offers 409% better value. The Radeon HD 8450G is the newer GPU (2012 vs 2011).
| Feature | Radeon HD 6620G | Radeon HD 8450G |
|---|---|---|
| MSRP | $50 | $50 |
| Avg Price (30d) | $10-80% | $50 |
| Performance per Dollar | 34.1+409% | 6.7 |
| Codename | Onega | Pitcairn |
| Release | April 19 2011 | March 5 2012 |
| Ranking | #926 | #503 |
Top Performing GPUs
The most powerful gpus ranked by G3D Mark benchmark scores.
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