Radeon HD 6990 vs GeForce GTX 675MX
Radeon HD 6990
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GeForce GTX 675MX
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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 GeForce GTX 675MX
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Radeon HD 6990 is the superior choice for raw performance. It leads with a 2.1% higher G3D Mark score. However, the GeForce GTX 675MX offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | Radeon HD 6990 | GeForce GTX 675MX |
|---|---|---|
| Performance | ✅Leading raw performance (+2.1%) | ❌Lower raw frame rates (-2.1%) |
| Longevity | 🛑Obsolete Architecture (2011 / TeraScale 3 (2010−2013)) | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+100%) |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | Standard Size (310mm) | — |
💎 Value Proposition
While current pricing data is unavailable, the Radeon HD 6990 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 HD 6990 and GeForce GTX 675MX
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.
GeForce GTX 675MX
The GeForce GTX 675MX is manufactured by NVIDIA. It was released in October 1 2012. It features the Kepler architecture. The core clock speed is 600 MHz. It has 960 shading units. The thermal design power (TDP) is 100W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 2,951 points.
Graphics Performance
The Radeon HD 6990 scores 3,014 and the GeForce GTX 675MX reaches 2,951 in the G3D Mark benchmark — just a 2.1% difference, making them near-identical in rasterization performance. The Radeon HD 6990 is built on TeraScale 3 while the GeForce GTX 675MX uses Kepler, both on 40 nm vs 28 nm. Shader units: 1,536 (Radeon HD 6990) vs 960 (GeForce GTX 675MX). Raw compute: 2.55 TFLOPS ×2 (Radeon HD 6990) vs 1.256 TFLOPS (GeForce GTX 675MX).
| Feature | Radeon HD 6990 | GeForce GTX 675MX |
|---|---|---|
| G3D Mark Score | 3,014+2% | 2,951 |
| Architecture | TeraScale 3 | Kepler |
| Process Node | 40 nm | 28 nm |
| Shading Units | 1536 ×2+60% | 960 |
| Compute (TFLOPS) | 2.55 TFLOPS ×2+103% | 1.256 TFLOPS |
| ROPs | 32 ×2 | 32 |
| TMUs | 96 ×2+20% | 80 |
| L1 Cache | 384 KB+380% | 80 KB |
| L2 Cache | 512 KB | 512 KB |
Advanced Features (DLSS/FSR)
| Feature | Radeon HD 6990 | GeForce GTX 675MX |
|---|---|---|
| Upscaling Tech | FSR 1.0 (Software) | FSR 2.1 (Compatible) |
| Frame Generation | Not Supported | FSR 3 (Compatible) |
| Ray Reconstruction | No | No |
| Low Latency | AMD Anti-Lag | Standard |
Video Memory (VRAM)
The Radeon HD 6990 comes with 2 GB of VRAM, while the GeForce GTX 675MX has 4 GB. The GeForce GTX 675MX offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 128-bit.
| Feature | Radeon HD 6990 | GeForce GTX 675MX |
|---|---|---|
| VRAM Capacity | 2 GB | 4 GB+100% |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 128-bit | 128-bit |
| L2 Cache | 512 KB | 512 KB |
Display & API Support
DirectX support: 11.2 (Radeon HD 6990) vs 12 (11_0) (GeForce GTX 675MX). Vulkan: None vs 1.2. OpenGL: 4.4 vs 4.6. Maximum simultaneous displays: 5 vs 4.
| Feature | Radeon HD 6990 | GeForce GTX 675MX |
|---|---|---|
| DirectX | 11.2 | 12 (11_0)+7% |
| Vulkan | None | 1.2 |
| OpenGL | 4.4 | 4.6+5% |
| Max Displays | 5+25% | 4 |
Media & Encoding
Hardware encoder: None (Radeon HD 6990) vs NVENC 1st Gen (GeForce GTX 675MX). Decoder: UVD 3.0 vs PureVideo HD VP5. Supported codecs: H.264,VC-1,MPEG-2,MPEG-4 (Radeon HD 6990) vs H.264,VC-1,MPEG-2,MPEG-4 ASP (GeForce GTX 675MX).
| Feature | Radeon HD 6990 | GeForce GTX 675MX |
|---|---|---|
| Encoder | None | NVENC 1st Gen |
| Decoder | UVD 3.0 | PureVideo HD VP5 |
| Codecs | H.264,VC-1,MPEG-2,MPEG-4 | H.264,VC-1,MPEG-2,MPEG-4 ASP |
Power & Dimensions
The Radeon HD 6990 draws 375W versus the GeForce GTX 675MX's 100W — a 115.8% difference. The GeForce GTX 675MX is more power-efficient. Recommended PSU: 750W (Radeon HD 6990) vs 350W (GeForce GTX 675MX). Power connectors: 2x 8-pin vs 1x 6-pin. Typical load temperature: 85 vs 85°C.
| Feature | Radeon HD 6990 | GeForce GTX 675MX |
|---|---|---|
| TDP | 375W | 100W-73% |
| Recommended PSU | 750W | 350W-53% |
| Power Connector | 2x 8-pin | 1x 6-pin |
| Length | 310mm | — |
| Height | 115mm | — |
| Slots | 2 | 0-100% |
| Temp (Load) | 85 | 85°C |
| Perf/Watt | 8.0 | 29.5+269% |
Value Analysis
The GeForce GTX 675MX is the newer GPU (2012 vs 2011).
| Feature | Radeon HD 6990 | GeForce GTX 675MX |
|---|---|---|
| MSRP | $699 | — |
| Avg Price (30d) | $498 | — |
| Codename | Antilles | GK104 |
| Release | March 8 2011 | October 1 2012 |
| Ranking | #583 | #588 |
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