Radeon HD 7790 vs Radeon HD 6990
Radeon HD 7790
Popular choices:
Radeon HD 6990
Popular choices:
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
🚀 Performance Leadership
The Radeon HD 7790 is the superior choice for raw performance. It leads with a 2.5% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon HD 6990.
| Insight | Radeon HD 7790 | Radeon HD 6990 |
|---|---|---|
| Performance | ✅Leading raw performance (+2.5%) | ❌Lower raw frame rates (-2.5%) |
| Longevity | 🛑Obsolete Architecture (2013 / GCN 2.0 (2013−2017)) | 🛑Obsolete Architecture (2011 / TeraScale 3 (2010−2013)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+0%) |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | 📏 Compact / SFF Friendly | Standard Size (310mm) |
💎 Value Proposition
The Radeon HD 7790 offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the Radeon HD 7790 holds the technical lead. Priced at $40 (vs $498), it costs 92% less, resulting in a 1176.4% higher cost efficiency score.
| Insight | Radeon HD 7790 | Radeon HD 6990 |
|---|---|---|
| Cost Efficiency | ✅Better overall value (+1176.4%) | ❌Lower cost efficiency |
| Upfront Cost | ✅More affordable ($40) | ⚠️Higher upfront cost ($498) |
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 7790 and Radeon HD 6990
Radeon HD 7790
The Radeon HD 7790 is manufactured by AMD. It was released in March 22 2013. It features the GCN 2.0 architecture. The core clock speed is 1000 MHz. It has 896 shading units. The thermal design power (TDP) is 85W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 3,090 points. Launch price was $149.
Radeon HD 6990
The Radeon HD 6990 is manufactured by AMD. It was released in March 8 2011. It features the TeraScale 3 architecture. The core clock speed is 830 MHz. It has 1536 ×2 shading units. The thermal design power (TDP) is 375W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 3,014 points. Launch price was $699.
Graphics Performance
The Radeon HD 7790 scores 3,090 and the Radeon HD 6990 reaches 3,014 in the G3D Mark benchmark — just a 2.5% difference, making them near-identical in rasterization performance. The Radeon HD 7790 is built on GCN 2.0 while the Radeon HD 6990 uses TeraScale 3, both on 28 nm vs 40 nm. Shader units: 896 (Radeon HD 7790) vs 1,536 (Radeon HD 6990). Raw compute: 1.792 TFLOPS (Radeon HD 7790) vs 2.55 TFLOPS ×2 (Radeon HD 6990).
| Feature | Radeon HD 7790 | Radeon HD 6990 |
|---|---|---|
| G3D Mark Score | 3,090+3% | 3,014 |
| Architecture | GCN 2.0 | TeraScale 3 |
| Process Node | 28 nm | 40 nm |
| Shading Units | 896 | 1536 ×2+71% |
| Compute (TFLOPS) | 1.792 TFLOPS | 2.55 TFLOPS ×2+42% |
| ROPs | 16 | 32 ×2+100% |
| TMUs | 56 | 96 ×2+71% |
| L1 Cache | 224 KB | 384 KB+71% |
| L2 Cache | 256 KB | 512 KB+100% |
Advanced Features (DLSS/FSR)
| Feature | Radeon HD 7790 | Radeon HD 6990 |
|---|---|---|
| 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 GDDR5. Bus width: 128-bit vs 128-bit. L2 Cache: 256 KB (Radeon HD 7790) vs 512 KB (Radeon HD 6990) — the Radeon HD 6990 has significantly larger on-die cache to reduce VRAM reliance.
| Feature | Radeon HD 7790 | Radeon HD 6990 |
|---|---|---|
| VRAM Capacity | 2 GB | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | 96 GB/s | Unknown |
| Bus Width | 128-bit | 128-bit |
| L2 Cache | 256 KB | 512 KB+100% |
Display & API Support
DirectX support: 12 (12_0) (Radeon HD 7790) vs 11.2 (Radeon HD 6990). Vulkan: 1.3 vs None. OpenGL: 4.6 vs 4.4. Maximum simultaneous displays: 5 vs 5.
| Feature | Radeon HD 7790 | Radeon HD 6990 |
|---|---|---|
| DirectX | 12 (12_0)+7% | 11.2 |
| Vulkan | 1.3 | None |
| OpenGL | 4.6+5% | 4.4 |
| Max Displays | 5 | 5 |
Media & Encoding
Hardware encoder: VCE 2.0 (Radeon HD 7790) vs None (Radeon HD 6990). Decoder: UVD 4.2 vs UVD 3.0. Supported codecs: H.264,VC-1,MPEG-2,MPEG-4 (Radeon HD 7790) vs H.264,VC-1,MPEG-2,MPEG-4 (Radeon HD 6990).
| Feature | Radeon HD 7790 | Radeon HD 6990 |
|---|---|---|
| Encoder | VCE 2.0 | None |
| Decoder | UVD 4.2 | UVD 3.0 |
| Codecs | H.264,VC-1,MPEG-2,MPEG-4 | H.264,VC-1,MPEG-2,MPEG-4 |
Power & Dimensions
The Radeon HD 7790 draws 85W versus the Radeon HD 6990's 375W — a 126.1% difference. The Radeon HD 7790 is more power-efficient. Recommended PSU: 400W (Radeon HD 7790) vs 750W (Radeon HD 6990). Power connectors: 1x 6-pin vs 2x 8-pin. Card length: 183mm vs 310mm, occupying 2 vs 2 slots. Typical load temperature: 70 vs 85.
| Feature | Radeon HD 7790 | Radeon HD 6990 |
|---|---|---|
| TDP | 85W-77% | 375W |
| Recommended PSU | 400W-47% | 750W |
| Power Connector | 1x 6-pin | 2x 8-pin |
| Length | 183mm | 310mm |
| Height | 111mm | 115mm |
| Slots | 2 | 2 |
| Temp (Load) | 70-18% | 85 |
| Perf/Watt | 36.4+355% | 8.0 |
Value Analysis
The Radeon HD 7790 launched at $149 MSRP and currently averages $40, while the Radeon HD 6990 launched at $699 and now averages $498. The Radeon HD 7790 costs 92% less ($458 savings) at current market prices. Performance per dollar (G3D Mark / price): 77.3 (Radeon HD 7790) vs 6.1 (Radeon HD 6990) — the Radeon HD 7790 offers 1167.2% better value. The Radeon HD 7790 is the newer GPU (2013 vs 2011).
| Feature | Radeon HD 7790 | Radeon HD 6990 |
|---|---|---|
| MSRP | $149-79% | $699 |
| Avg Price (30d) | $40-92% | $498 |
| Performance per Dollar | 77.3+1167% | 6.1 |
| Codename | Bonaire | Antilles |
| Release | March 22 2013 | March 8 2011 |
| Ranking | #579 | #583 |
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