Radeon RX Vega 8 vs Radeon HD 6790
Radeon RX Vega 8
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Radeon HD 6790
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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
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
⚠️ Generational Difference
The Radeon RX Vega 8 is significantly newer (2018 vs 2011). The Radeon RX Vega 8 likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The Radeon HD 6790 lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The Radeon HD 6790 is the superior choice for raw performance. It leads with a 1.8% higher G3D Mark score and 100+% more VRAM (1 GB vs 0 MB). This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon RX Vega 8.
| Insight | Radeon RX Vega 8 | Radeon HD 6790 |
|---|---|---|
| Performance | ❌Lower raw frame rates (-1.8%) | ✅Leading raw performance (+1.8%) |
| Longevity | 🛑Obsolete Architecture (2018 / GCN 5.0 (2017−2020)) | 🛑Obsolete Architecture (2011 / TeraScale 2 (2009−2015)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+100+%) |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | — | 📏 Compact / SFF Friendly |
💎 Value Proposition
While current pricing data is unavailable, the Radeon HD 6790 remains the clear technical winner. Check real-time availability to determine if the performance gap justifies the market price.
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 RX Vega 8 and Radeon HD 6790
Radeon RX Vega 8
The Radeon RX Vega 8 is manufactured by AMD. It was released in February 1 2018. It features the GCN 5.0 architecture. The core clock ranges from 720 MHz to 1190 MHz. It has 512 shading units. The thermal design power (TDP) is 15W. Manufactured using 14 nm process technology. G3D Mark benchmark score: 1,540 points.
Radeon HD 6790
The Radeon HD 6790 is manufactured by AMD. It was released in April 4 2011. It features the TeraScale 2 architecture. The core clock speed is 840 MHz. It has 800 shading units. The thermal design power (TDP) is 150W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 1,567 points. Launch price was $149.
Graphics Performance
The Radeon RX Vega 8 scores 1,540 and the Radeon HD 6790 reaches 1,567 in the G3D Mark benchmark — just a 1.8% difference, making them near-identical in rasterization performance. The Radeon RX Vega 8 is built on GCN 5.0 while the Radeon HD 6790 uses TeraScale 2, both on 14 nm vs 40 nm. Shader units: 512 (Radeon RX Vega 8) vs 800 (Radeon HD 6790).
| Feature | Radeon RX Vega 8 | Radeon HD 6790 |
|---|---|---|
| G3D Mark Score | 1,540 | 1,567+2% |
| Architecture | GCN 5.0 | TeraScale 2 |
| Process Node | 14 nm | 40 nm |
| Shading Units | 512 | 800+56% |
| ROPs | 8 | 16+100% |
| TMUs | 32 | 40+25% |
Advanced Features (DLSS/FSR)
| Feature | Radeon RX Vega 8 | Radeon HD 6790 |
|---|---|---|
| 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)
The Radeon RX Vega 8 comes with 0 MB of VRAM, while the Radeon HD 6790 has 1 GB. The Radeon HD 6790 offers 100+% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: System vs 128-bit.
| Feature | Radeon RX Vega 8 | Radeon HD 6790 |
|---|---|---|
| VRAM Capacity | Shared System RAM | 1 GB |
| Memory Type | Shared | GDDR5 |
| Memory Bandwidth | System | Unknown |
| Bus Width | System | 128-bit |
Display & API Support
DirectX support: 12 (Radeon RX Vega 8) vs 11.2 (11_0) (Radeon HD 6790). Vulkan: 1.2 vs N/A. OpenGL: 4.6 vs 4.4. Maximum simultaneous displays: 3 vs 3.
| Feature | Radeon RX Vega 8 | Radeon HD 6790 |
|---|---|---|
| DirectX | 12+7% | 11.2 (11_0) |
| Vulkan | 1.2 | N/A |
| OpenGL | 4.6+5% | 4.4 |
| Max Displays | 3 | 3 |
Media & Encoding
Hardware encoder: VCN 1.0 (Radeon RX Vega 8) vs None (Radeon HD 6790). Decoder: VCN 1.0 vs UVD 3.0. Supported codecs: H.264,HEVC,VP9 (Radeon RX Vega 8) vs H.264,VC-1,MPEG-2,MPEG-4 (Radeon HD 6790).
| Feature | Radeon RX Vega 8 | Radeon HD 6790 |
|---|---|---|
| Encoder | VCN 1.0 | None |
| Decoder | VCN 1.0 | UVD 3.0 |
| Codecs | H.264,HEVC,VP9 | H.264,VC-1,MPEG-2,MPEG-4 |
Power & Dimensions
The Radeon RX Vega 8 draws 15W versus the Radeon HD 6790's 150W — a 163.6% difference. The Radeon RX Vega 8 is more power-efficient. Recommended PSU: 1W (Radeon RX Vega 8) vs 450W (Radeon HD 6790). Power connectors: Integrated vs 2x 6-pin. Typical load temperature: 85°C vs 80.
| Feature | Radeon RX Vega 8 | Radeon HD 6790 |
|---|---|---|
| TDP | 15W-90% | 150W |
| Recommended PSU | 1W-100% | 450W |
| Power Connector | Integrated | 2x 6-pin |
| Length | — | 240mm |
| Height | — | 111mm |
| Slots | — | 2 |
| Temp (Load) | 85°C | 80-6% |
| Perf/Watt | 102.7+888% | 10.4 |
Value Analysis
The Radeon RX Vega 8 launched at $0 MSRP and currently averages $0, while the Radeon HD 6790 launched at $149 and now averages $149. The Radeon RX Vega 8 costs 100+% less ($149 savings) at current market prices. Performance per dollar (G3D Mark / price): Infinity (Radeon RX Vega 8) vs 10.5 (Radeon HD 6790) — the Radeon RX Vega 8 offers Infinity% better value. The Radeon RX Vega 8 is the newer GPU (2018 vs 2011).
| Feature | Radeon RX Vega 8 | Radeon HD 6790 |
|---|---|---|
| MSRP | $0-100% | $149 |
| Avg Price (30d) | $0-100% | $149 |
| Performance per Dollar | Infinity | 10.5 |
| Codename | Vega | Barts |
| Release | February 1 2018 | April 4 2011 |
| Ranking | #372 | #759 |
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