GeForce GTX 660M vs Radeon 550X
GeForce GTX 660M
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Radeon 550X
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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 GeForce GTX 660M is positioned at rank 190 and the Radeon 550X is on rank 101, so the Radeon 550X offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar GeForce GTX 660M
Performance Per Dollar Radeon 550X
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
⚠️ Generational Difference
The Radeon 550X is significantly newer (2019 vs 2012). The Radeon 550X likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The GeForce GTX 660M lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The Radeon 550X is the superior choice for raw performance. It leads with a 1.6% higher G3D Mark score. However, the GeForce GTX 660M offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | GeForce GTX 660M | Radeon 550X |
|---|---|---|
| Performance | ❌Lower raw frame rates (-1.6%) | ✅Leading raw performance (+1.6%) |
| Longevity | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) | GCN 4.0 (2016−2020) (14nm) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+300%) | ❌ Less VRAM capacity |
| Efficiency | Normal Efficiency | Normal Efficiency |
| Case Fit | — | — |
💎 Value Proposition
While current pricing data is unavailable, the Radeon 550X 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 GeForce GTX 660M and Radeon 550X
GeForce GTX 660M
The GeForce GTX 660M is manufactured by NVIDIA. It was released in March 22 2012. It features the Kepler architecture. The core clock ranges from 835 MHz to 950 MHz. It has 384 shading units. The thermal design power (TDP) is 50W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,452 points.
Radeon 550X
The Radeon 550X is manufactured by AMD. It was released in March 27 2019. It features the GCN 4.0 architecture. The core clock ranges from 1082 MHz to 1218 MHz. It has 512 shading units. The thermal design power (TDP) is 50W. Manufactured using 14 nm process technology. G3D Mark benchmark score: 1,475 points.
Graphics Performance
The GeForce GTX 660M scores 1,452 and the Radeon 550X reaches 1,475 in the G3D Mark benchmark — just a 1.6% difference, making them near-identical in rasterization performance. The GeForce GTX 660M is built on Kepler while the Radeon 550X uses GCN 4.0, both on 28 nm vs 14 nm. Shader units: 384 (GeForce GTX 660M) vs 512 (Radeon 550X). Raw compute: 0.7296 TFLOPS (GeForce GTX 660M) vs 1.247 TFLOPS (Radeon 550X). Boost clocks: 950 MHz vs 1218 MHz.
| Feature | GeForce GTX 660M | Radeon 550X |
|---|---|---|
| G3D Mark Score | 1,452 | 1,475+2% |
| Architecture | Kepler | GCN 4.0 |
| Process Node | 28 nm | 14 nm |
| Shading Units | 384 | 512+33% |
| Compute (TFLOPS) | 0.7296 TFLOPS | 1.247 TFLOPS+71% |
| Boost Clock | 950 MHz | 1218 MHz+28% |
| ROPs | 16 | 16 |
| TMUs | 32 | 32 |
| L1 Cache | 32 KB | 128 KB+300% |
| L2 Cache | 256 KB | 512 KB+100% |
Advanced Features (DLSS/FSR)
| Feature | GeForce GTX 660M | Radeon 550X |
|---|---|---|
| Upscaling Tech | FSR 2.1 (Compatible) | FSR 1.0 (Software) |
| Frame Generation | FSR 3 (Compatible) | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | Standard | AMD Anti-Lag |
Video Memory (VRAM)
The GeForce GTX 660M comes with 2 GB of VRAM, while the Radeon 550X has 512 MB. The GeForce GTX 660M offers 300% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 64-bit. L2 Cache: 256 KB (GeForce GTX 660M) vs 512 KB (Radeon 550X) — the Radeon 550X has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce GTX 660M | Radeon 550X |
|---|---|---|
| VRAM Capacity | 2 GB+300% | 0.5 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit+100% | 64-bit |
| L2 Cache | 256 KB | 512 KB+100% |
Power & Dimensions
The GeForce GTX 660M draws 50W versus the Radeon 550X's 50W — a 0% difference. The Radeon 550X is more power-efficient. Recommended PSU: 350W (GeForce GTX 660M) vs 350W (Radeon 550X). Power connectors: 1x 6-pin vs None.
| Feature | GeForce GTX 660M | Radeon 550X |
|---|---|---|
| TDP | 50W | 50W |
| Recommended PSU | 350W | 350W |
| Power Connector | 1x 6-pin | None |
| Slots | 0 | — |
| Temp (Load) | 60°C | — |
| Perf/Watt | 29.0 | 29.5+2% |
Value Analysis
The Radeon 550X is the newer GPU (2019 vs 2012).
| Feature | GeForce GTX 660M | Radeon 550X |
|---|---|---|
| MSRP | — | $109 |
| Avg Price (30d) | — | $45 |
| Codename | GK107 | Lexa |
| Release | March 22 2012 | March 27 2019 |
| Ranking | #774 | #772 |
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