Radeon HD 7770 vs Radeon 820M
Radeon HD 7770
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Radeon 820M
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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.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar
Performance Per Dollar Radeon 820M
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
⚠️ Generational Difference
The Radeon 820M is significantly newer (2024 vs 2012). The Radeon 820M likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The Radeon HD 7770 lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The Radeon HD 7770 is the superior choice for raw performance. It leads with a 1.4% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon 820M.
| Insight | Radeon HD 7770 | Radeon 820M |
|---|---|---|
| Performance | ✅Leading raw performance (+1.4%) | ❌Lower raw frame rates (-1.4%) |
| Longevity | 🛑Obsolete Architecture (2012 / GCN 1.0 (2012−2020)) | RDNA 3+ (2024) (4nm) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+0%) |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | 📏 Compact / SFF Friendly | — |
💎 Value Proposition
The Radeon 820M offers a compelling cost-to-performance ratio. Priced at $25 versus $50 for the Radeon HD 7770, it costs 50% less. While it maintains basic entry-level capabilities, this results in a 97.2% higher cost efficiency score.
| Insight | Radeon HD 7770 | Radeon 820M |
|---|---|---|
| Cost Efficiency | ❌Lower cost efficiency | ✅Better overall value (+97.2%) |
| Upfront Cost | ⚠️Higher upfront cost ($50) | ✅More affordable ($25) |
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 7770 and Radeon 820M
Radeon HD 7770
The Radeon HD 7770 is manufactured by AMD. It was released in February 15 2012. It features the GCN 1.0 architecture. The core clock speed is 1000 MHz. It has 640 shading units. The thermal design power (TDP) is 80W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 2,173 points. Launch price was $159.
Radeon 820M
The Radeon 820M is manufactured by AMD. It was released in June 2 2024. It features the RDNA 3+ architecture. The boost clock speed is 2900 MHz. It has 128 shading units. The thermal design power (TDP) is 30W. Manufactured using 4 nm process technology. G3D Mark benchmark score: 2,143 points.
Graphics Performance
The Radeon HD 7770 scores 2,173 and the Radeon 820M reaches 2,143 in the G3D Mark benchmark — just a 1.4% difference, making them near-identical in rasterization performance. The Radeon HD 7770 is built on GCN 1.0 while the Radeon 820M uses RDNA 3+, both on 28 nm vs 4 nm. Shader units: 640 (Radeon HD 7770) vs 128 (Radeon 820M).
| Feature | Radeon HD 7770 | Radeon 820M |
|---|---|---|
| G3D Mark Score | 2,173+1% | 2,143 |
| Architecture | GCN 1.0 | RDNA 3+ |
| Process Node | 28 nm | 4 nm |
| Shading Units | 640+400% | 128 |
Advanced Features (DLSS/FSR)
| Feature | Radeon HD 7770 | Radeon 820M |
|---|---|---|
| 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 2 GB of video memory. Bus width: 128-bit vs System.
| Feature | Radeon HD 7770 | Radeon 820M |
|---|---|---|
| VRAM Capacity | 2 GB | 2 GB |
| Memory Type | GDDR5 | Shared |
| Memory Bandwidth | 72 GB/s | System |
| Bus Width | 128-bit | System |
Display & API Support
DirectX support: 12_0 (Radeon HD 7770) vs 12 Ultimate (Radeon 820M). Maximum simultaneous displays: 4 vs 4.
| Feature | Radeon HD 7770 | Radeon 820M |
|---|---|---|
| DirectX | 12_0 | 12 Ultimate |
| Max Displays | 4 | 4 |
Media & Encoding
Hardware encoder: VCE 1.0 (Radeon HD 7770) vs VCN 4.0 (Radeon 820M). Decoder: UVD 3.1 vs VCN 4.0. Supported codecs: H.264 (Radeon HD 7770) vs H.264,H.265,AV1,VP9 (Radeon 820M).
| Feature | Radeon HD 7770 | Radeon 820M |
|---|---|---|
| Encoder | VCE 1.0 | VCN 4.0 |
| Decoder | UVD 3.1 | VCN 4.0 |
| Codecs | H.264 | H.264,H.265,AV1,VP9 |
Power & Dimensions
The Radeon HD 7770 draws 80W versus the Radeon 820M's 30W — a 90.9% difference. The Radeon 820M is more power-efficient. Recommended PSU: 450W (Radeon HD 7770) vs 350W (Radeon 820M). Power connectors: 1x 6-pin vs PCIe-powered. Card length: 210mm vs 0mm, occupying 2 vs 0 slots.
| Feature | Radeon HD 7770 | Radeon 820M |
|---|---|---|
| TDP | 80W | 30W-63% |
| Recommended PSU | 450W | 350W-22% |
| Power Connector | 1x 6-pin | PCIe-powered |
| Length | 210mm | 0mm |
| Height | — | 0mm |
| Slots | 2 | 0-100% |
| Temp (Load) | — | 80 |
| Perf/Watt | 27.2 | 71.4+163% |
Value Analysis
The Radeon 820M costs 50% less ($25 savings) at current market prices. Performance per dollar (G3D Mark / price): 43.5 (Radeon HD 7770) vs 85.7 (Radeon 820M) — the Radeon 820M offers 97% better value. The Radeon 820M is the newer GPU (2024 vs 2012).
| Feature | Radeon HD 7770 | Radeon 820M |
|---|---|---|
| MSRP | $159 | — |
| Avg Price (30d) | $50 | $25-50% |
| Performance per Dollar | 43.5 | 85.7+97% |
| Codename | Cape Verde | Krackan Point |
| Release | February 15 2012 | June 2 2024 |
| Ranking | #664 | #669 |
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