
Quadro K620
Popular choices:

RadeonT 660M
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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 Quadro K620 is positioned at rank 99 and the RadeonT 660M is on rank 226, so the Quadro K620 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Quadro K620
Performance Per Dollar RadeonT 660M
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
⚠️ Generational Difference
The RadeonT 660M is significantly newer (2023 vs 2014). The RadeonT 660M likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The Quadro K620 lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The RadeonT 660M is the superior choice for raw performance. It leads with a 0.4% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Quadro K620.
| Insight | Quadro K620 | RadeonT 660M |
|---|---|---|
| Performance | ❌Lower raw frame rates (-0.4%) | ✅Leading raw performance (+0.4%) |
| Longevity | 🛑Obsolete Architecture (2014 / Maxwell (2014−2017)) | RDNA 2.0 (2020−2025) (6nm) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+0%) |
| Efficiency | Normal Efficiency | Normal Efficiency |
| Case Fit | — | — |
💎 Value Proposition
While current pricing data is unavailable, the RadeonT 660M 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 Quadro K620 and RadeonT 660M

Quadro K620
The Quadro K620 is manufactured by NVIDIA. It was released in July 22 2014. It features the Maxwell architecture. The core clock ranges from 1058 MHz to 1124 MHz. It has 384 shading units. The thermal design power (TDP) is 45W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 2,213 points. Launch price was $189.89.

RadeonT 660M
The RadeonT 660M is manufactured by AMD. It was released in January 3 2023. It features the RDNA 2.0 architecture. The core clock ranges from 1500 MHz to 1900 MHz. It has 384 shading units. The thermal design power (TDP) is 40W. Manufactured using 6 nm process technology. It features 6 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 2,221 points.
Graphics Performance
The Quadro K620 scores 2,213 and the RadeonT 660M reaches 2,221 in the G3D Mark benchmark — just a 0.4% difference, making them near-identical in rasterization performance. The Quadro K620 is built on Maxwell while the RadeonT 660M uses RDNA 2.0, both on 28 nm vs 6 nm. Shader units: 384 (Quadro K620) vs 384 (RadeonT 660M). Raw compute: 0.8632 TFLOPS (Quadro K620) vs 1.459 TFLOPS (RadeonT 660M). Boost clocks: 1124 MHz vs 1900 MHz.
| Feature | Quadro K620 | RadeonT 660M |
|---|---|---|
| G3D Mark Score | 2,213 | 2,221 |
| Architecture | Maxwell | RDNA 2.0 |
| Process Node | 28 nm | 6 nm |
| Shading Units | 384 | 384 |
| Compute (TFLOPS) | 0.8632 TFLOPS | 1.459 TFLOPS+69% |
| Boost Clock | 1124 MHz | 1900 MHz+69% |
| ROPs | 16 | 16 |
| TMUs | 24 | 24 |
| L1 Cache | 192 KB+50% | 128 KB |
| L2 Cache | 2 MB | 2 MB |
Advanced Features (DLSS/FSR)
| Feature | Quadro K620 | RadeonT 660M |
|---|---|---|
| Upscaling Tech | FSR 1.0 (Software) | FSR 1.0 (Software) |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | Standard | AMD Anti-Lag |
Video Memory (VRAM)
Both cards feature 2 GB of GDDR5. Bus width: 64-bit vs 64-bit.
| Feature | Quadro K620 | RadeonT 660M |
|---|---|---|
| VRAM Capacity | 2 GB | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 64-bit | 64-bit |
| L2 Cache | 2 MB | 2 MB |
Power & Dimensions
The Quadro K620 draws 45W versus the RadeonT 660M's 40W — a 11.8% difference. The RadeonT 660M is more power-efficient. Recommended PSU: 350W (Quadro K620) vs 350W (RadeonT 660M). Power connectors: PCIe-powered vs PCIe-powered.
| Feature | Quadro K620 | RadeonT 660M |
|---|---|---|
| TDP | 45W | 40W-11% |
| Recommended PSU | 350W | 350W |
| Power Connector | PCIe-powered | PCIe-powered |
| Perf/Watt | 49.2 | 55.5+13% |
Value Analysis
The RadeonT 660M is the newer GPU (2023 vs 2014).
| Feature | Quadro K620 | RadeonT 660M |
|---|---|---|
| MSRP | $150 | — |
| Avg Price (30d) | $30 | — |
| Codename | GM107 | Rembrandt+ |
| Release | July 22 2014 | January 3 2023 |
| Ranking | #660 | #565 |
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