GeForce GT 640 vs Quadro K620M
GeForce GT 640
Popular choices:
Quadro K620M
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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 GT 640 is positioned at rank 107 and the Quadro K620M is on rank 101, so the Quadro K620M offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar GeForce GT 640
Performance Per Dollar Quadro K620M
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The GeForce GT 640 is the superior choice for raw performance. It leads with a 0.9% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Quadro K620M.
| Insight | GeForce GT 640 | Quadro K620M |
|---|---|---|
| Performance | ✅Leading raw performance (+0.9%) | ❌Lower raw frame rates (-0.9%) |
| Longevity | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) | 🛑Obsolete Architecture (2015 / Maxwell (2014−2017)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+0%) |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | 📏 Compact / SFF Friendly | — |
💎 Value Proposition
While current pricing data is unavailable, the GeForce GT 640 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 GT 640 and Quadro K620M
GeForce GT 640
The GeForce GT 640 is manufactured by NVIDIA. It was released in June 5 2012. It features the Kepler architecture. The core clock speed is 902 MHz. It has 384 shading units. The thermal design power (TDP) is 65W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,169 points. Launch price was $99.
Quadro K620M
The Quadro K620M is manufactured by NVIDIA. It was released in March 1 2015. It features the Maxwell architecture. The core clock ranges from 1029 MHz to 1124 MHz. It has 384 shading units. The thermal design power (TDP) is 30W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,159 points.
Graphics Performance
The GeForce GT 640 scores 1,169 and the Quadro K620M reaches 1,159 in the G3D Mark benchmark — just a 0.9% difference, making them near-identical in rasterization performance. The GeForce GT 640 is built on Kepler while the Quadro K620M uses Maxwell, both on a 28 nm process. Shader units: 384 (GeForce GT 640) vs 384 (Quadro K620M). Raw compute: 0.6927 TFLOPS (GeForce GT 640) vs 0.8632 TFLOPS (Quadro K620M).
| Feature | GeForce GT 640 | Quadro K620M |
|---|---|---|
| G3D Mark Score | 1,169 | 1,159 |
| Architecture | Kepler | Maxwell |
| Process Node | 28 nm | 28 nm |
| Shading Units | 384 | 384 |
| Compute (TFLOPS) | 0.6927 TFLOPS | 0.8632 TFLOPS+25% |
| ROPs | 16+100% | 8 |
| TMUs | 32+100% | 16 |
| L1 Cache | 32 KB | 128 KB+300% |
| L2 Cache | 0.25 MB | 1 MB+300% |
Advanced Features (DLSS/FSR)
| Feature | GeForce GT 640 | Quadro K620M |
|---|---|---|
| Upscaling Tech | FSR 1.0 (Software) | FSR 1.0 (Software) |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | Standard | Standard |
Video Memory (VRAM)
Both cards feature 4 GB of GDDR5. Bus width: 128-bit vs 64-bit. L2 Cache: 0.25 MB (GeForce GT 640) vs 1 MB (Quadro K620M) — the Quadro K620M has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce GT 640 | Quadro K620M |
|---|---|---|
| VRAM Capacity | 4 GB | 4 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit+100% | 64-bit |
| L2 Cache | 0.25 MB | 1 MB+300% |
Power & Dimensions
The GeForce GT 640 draws 65W versus the Quadro K620M's 30W — a 73.7% difference. The Quadro K620M is more power-efficient. Recommended PSU: 300W (GeForce GT 640) vs 350W (Quadro K620M). Power connectors: None vs PCIe-powered.
| Feature | GeForce GT 640 | Quadro K620M |
|---|---|---|
| TDP | 65W | 30W-54% |
| Recommended PSU | 300W-14% | 350W |
| Power Connector | None | PCIe-powered |
| Length | 145mm | — |
| Height | 111mm | — |
| Slots | 1 | — |
| Temp (Load) | 60°C | — |
| Perf/Watt | 18.0 | 38.6+114% |
Value Analysis
The Quadro K620M is the newer GPU (2015 vs 2012).
| Feature | GeForce GT 640 | Quadro K620M |
|---|---|---|
| MSRP | $99 | — |
| Avg Price (30d) | $50 | — |
| Codename | GK107 | GM108 |
| Release | June 5 2012 | March 1 2015 |
| Ranking | #837 | #842 |
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The most powerful gpus ranked by G3D Mark benchmark scores.
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