
GeForce GT 640M LE
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GeForce 920M
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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 640M LE is positioned at rank 386 and the GeForce 920M is on rank 355, so the GeForce 920M 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 640M LE
Performance Per Dollar GeForce 920M
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The GeForce 920M is the superior choice for raw performance. It leads with a 2.9% higher G3D Mark score. However, the GeForce GT 640M LE offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | GeForce GT 640M LE | GeForce 920M |
|---|---|---|
| Performance | ❌Lower raw frame rates (-2.9%) | ✅Leading raw performance (+2.9%) |
| Longevity | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) | 🛑Obsolete Architecture (2016 / Maxwell (2014−2017)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+300%) | ❌ Less VRAM capacity |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | — | — |
💎 Value Proposition
While current pricing data is unavailable, the GeForce 920M 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 640M LE and GeForce 920M

GeForce GT 640M LE
The GeForce GT 640M LE is manufactured by NVIDIA. It was released in March 22 2012. It features the Kepler architecture. The core clock ranges from Up to 625 MHz to 645 MHz. It has 384 shading units. The thermal design power (TDP) is 32W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 697 points.

GeForce 920M
The GeForce 920M is manufactured by NVIDIA. It was released in March 25 2016. It features the Maxwell architecture. The core clock ranges from 965 MHz to 993 MHz. It has 256 shading units. The thermal design power (TDP) is 16W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 717 points.
Graphics Performance
The GeForce GT 640M LE scores 697 and the GeForce 920M reaches 717 in the G3D Mark benchmark — just a 2.9% difference, making them near-identical in rasterization performance. The GeForce GT 640M LE is built on Kepler while the GeForce 920M uses Maxwell, both on a 28 nm process. Shader units: 384 (GeForce GT 640M LE) vs 256 (GeForce 920M). Raw compute: 0.48 TFLOPS (GeForce GT 640M LE) vs 0.5084 TFLOPS (GeForce 920M). Boost clocks: 645 MHz vs 993 MHz.
| Feature | GeForce GT 640M LE | GeForce 920M |
|---|---|---|
| G3D Mark Score | 697 | 717+3% |
| Architecture | Kepler | Maxwell |
| Process Node | 28 nm | 28 nm |
| Shading Units | 384+50% | 256 |
| Compute (TFLOPS) | 0.48 TFLOPS | 0.5084 TFLOPS+6% |
| Boost Clock | 645 MHz | 993 MHz+54% |
| ROPs | 16+100% | 8 |
| TMUs | 32+33% | 24 |
| L1 Cache | 32 KB | 128 KB+300% |
| L2 Cache | 0.25 MB | 1 MB+300% |
Advanced Features (DLSS/FSR)
| Feature | GeForce GT 640M LE | GeForce 920M |
|---|---|---|
| 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 640M LE comes with 2 GB of VRAM, while the GeForce 920M has 512 MB. The GeForce GT 640M LE offers 300% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 128-bit. L2 Cache: 0.25 MB (GeForce GT 640M LE) vs 1 MB (GeForce 920M) — the GeForce 920M has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce GT 640M LE | GeForce 920M |
|---|---|---|
| VRAM Capacity | 2 GB+300% | 0.5 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 128-bit | 128-bit |
| L2 Cache | 0.25 MB | 1 MB+300% |
Display & API Support
DirectX support: 12 (11_0) (GeForce GT 640M LE) vs 11.0 (GeForce 920M). Vulkan: 1.2 vs 1.1. OpenGL: 4.6 vs 4.5. Maximum simultaneous displays: 4 vs 1.
| Feature | GeForce GT 640M LE | GeForce 920M |
|---|---|---|
| DirectX | 12 (11_0)+9% | 11.0 |
| Vulkan | 1.2+9% | 1.1 |
| OpenGL | 4.6+2% | 4.5 |
| Max Displays | 4+300% | 1 |
Media & Encoding
Hardware encoder: NVENC 1st Gen (GeForce GT 640M LE) vs No (GeForce 920M). Decoder: VP5 vs PureVideo HD VP5. Supported codecs: H.264,MPEG-2,VC-1,MPEG-4 (GeForce GT 640M LE) vs MPEG-2,H.264,VC-1,MPEG-4 ASP (GeForce 920M).
| Feature | GeForce GT 640M LE | GeForce 920M |
|---|---|---|
| Encoder | NVENC 1st Gen | No |
| Decoder | VP5 | PureVideo HD VP5 |
| Codecs | H.264,MPEG-2,VC-1,MPEG-4 | MPEG-2,H.264,VC-1,MPEG-4 ASP |
Power & Dimensions
The GeForce GT 640M LE draws 32W versus the GeForce 920M's 16W — a 66.7% difference. The GeForce 920M is more power-efficient. Recommended PSU: 350W (GeForce GT 640M LE) vs 350W (GeForce 920M). Power connectors: PCIe-powered vs Legacy. Card length: 0mm vs 0mm, occupying 0 vs 0 slots. Typical load temperature: 85 vs 70°C.
| Feature | GeForce GT 640M LE | GeForce 920M |
|---|---|---|
| TDP | 32W | 16W-50% |
| Recommended PSU | 350W | 350W |
| Power Connector | PCIe-powered | Legacy |
| Length | 0mm | 0mm |
| Height | 0mm | 0mm |
| Slots | 0 | 0 |
| Temp (Load) | 85 | 70°C-18% |
| Perf/Watt | 21.8 | 44.8+106% |
Value Analysis
The GeForce 920M is the newer GPU (2016 vs 2012).
| Feature | GeForce GT 640M LE | GeForce 920M |
|---|---|---|
| MSRP | $80 | — |
| Avg Price (30d) | $20 | — |
| Codename | GK107 | GM108 |
| Release | March 22 2012 | March 25 2016 |
| Ranking | #909 | #864 |
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