GeForce GT 650M vs GeForce GT 640
GeForce GT 650M
Popular choices:
GeForce GT 640
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. The GeForce GT 650M is positioned at rank 188 and the GeForce GT 640 is on rank 107, so the GeForce GT 640 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 650M
Performance Per Dollar GeForce GT 640
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The GeForce GT 650M is the superior choice for raw performance. It leads with a 1.5% higher G3D Mark score. However, the GeForce GT 640 offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | GeForce GT 650M | GeForce GT 640 |
|---|---|---|
| Performance | ✅Leading raw performance (+1.5%) | ❌Lower raw frame rates (-1.5%) |
| Longevity | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+100%) |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | — | 📏 Compact / SFF Friendly |
💎 Value Proposition
While current pricing data is unavailable, the GeForce GT 650M 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 650M and GeForce GT 640
GeForce GT 650M
The GeForce GT 650M is manufactured by NVIDIA. It was released in March 22 2012. It features the Kepler architecture. The core clock ranges from Up to 900 MHz to 950 MHz. It has 384 shading units. The thermal design power (TDP) is 45W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,187 points.
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.
Graphics Performance
The GeForce GT 650M scores 1,187 and the GeForce GT 640 reaches 1,169 in the G3D Mark benchmark — just a 1.5% difference, making them near-identical in rasterization performance. The GeForce GT 650M is built on Kepler while the GeForce GT 640 uses Kepler, both on a 28 nm process. Shader units: 384 (GeForce GT 650M) vs 384 (GeForce GT 640). Raw compute: 0.7296 TFLOPS (GeForce GT 650M) vs 0.6927 TFLOPS (GeForce GT 640).
| Feature | GeForce GT 650M | GeForce GT 640 |
|---|---|---|
| G3D Mark Score | 1,187+2% | 1,169 |
| Architecture | Kepler | Kepler |
| Process Node | 28 nm | 28 nm |
| Shading Units | 384 | 384 |
| Compute (TFLOPS) | 0.7296 TFLOPS+5% | 0.6927 TFLOPS |
| ROPs | 16 | 16 |
| TMUs | 32 | 32 |
| L1 Cache | 32 KB | 32 KB |
| L2 Cache | 256 KB | 256 KB |
Advanced Features (DLSS/FSR)
| Feature | GeForce GT 650M | GeForce GT 640 |
|---|---|---|
| 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)
The GeForce GT 650M comes with 2 GB of VRAM, while the GeForce GT 640 has 4 GB. The GeForce GT 640 offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 128-bit.
| Feature | GeForce GT 650M | GeForce GT 640 |
|---|---|---|
| VRAM Capacity | 2 GB | 4 GB+100% |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 128-bit | 128-bit |
| L2 Cache | 256 KB | 256 KB |
Display & API Support
DirectX support: 12 (FL11_0) (GeForce GT 650M) vs 11.0 (GeForce GT 640). Vulkan: 1.3 vs 1.1. OpenGL: 4.5 vs 4.5. Maximum simultaneous displays: 4 vs 3.
| Feature | GeForce GT 650M | GeForce GT 640 |
|---|---|---|
| DirectX | 12 (FL11_0)+9% | 11.0 |
| Vulkan | 1.3+18% | 1.1 |
| OpenGL | 4.5 | 4.5 |
| Max Displays | 4+33% | 3 |
Media & Encoding
Hardware encoder: NVENC (Kepler) (GeForce GT 650M) vs NVENC 1.0 (GeForce GT 640). Decoder: VP5 vs PureVideo HD VP5. Supported codecs: H.264,VC-1,MPEG-4,MPEG-1/2 (GeForce GT 650M) vs MPEG-2,H.264,VC-1,MPEG-4 ASP (GeForce GT 640).
| Feature | GeForce GT 650M | GeForce GT 640 |
|---|---|---|
| Encoder | NVENC (Kepler) | NVENC 1.0 |
| Decoder | VP5 | PureVideo HD VP5 |
| Codecs | H.264,VC-1,MPEG-4,MPEG-1/2 | MPEG-2,H.264,VC-1,MPEG-4 ASP |
Power & Dimensions
The GeForce GT 650M draws 45W versus the GeForce GT 640's 65W — a 36.4% difference. The GeForce GT 650M is more power-efficient. Recommended PSU: 350W (GeForce GT 650M) vs 300W (GeForce GT 640). Power connectors: PCIe-powered vs None. Card length: 0mm vs 145mm, occupying 0 vs 1 slots. Typical load temperature: 85°C vs 60°C.
| Feature | GeForce GT 650M | GeForce GT 640 |
|---|---|---|
| TDP | 45W-31% | 65W |
| Recommended PSU | 350W | 300W-14% |
| Power Connector | PCIe-powered | None |
| Length | 0mm | 145mm |
| Height | 0mm | 111mm |
| Slots | 0-100% | 1 |
| Temp (Load) | 85°C | 60°C-29% |
| Perf/Watt | 26.4+47% | 18.0 |
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