GeForce GT 640 Rev. 2 vs GeForce GT 650M
GeForce GT 640 Rev. 2
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GeForce GT 650M
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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 Rev. 2 is positioned at rank 109 and the GeForce GT 650M is on rank 188, so the GeForce GT 640 Rev. 2 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 Rev. 2
Performance Per Dollar GeForce GT 650M
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The GeForce GT 650M is the superior choice for raw performance. It leads with a 1.6% higher G3D Mark score and 300% more VRAM (2 GB vs 512 MB). This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the GeForce GT 640 Rev. 2.
| Insight | GeForce GT 640 Rev. 2 | GeForce GT 650M |
|---|---|---|
| Performance | ❌Lower raw frame rates (-1.6%) | ✅Leading raw performance (+1.6%) |
| Longevity | 🛑Obsolete Architecture (2013 / Kepler 2.0 (2013−2015)) | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+300%) |
| Efficiency | Normal Efficiency | Normal Efficiency |
| 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 640 Rev. 2 and GeForce GT 650M
GeForce GT 640 Rev. 2
The GeForce GT 640 Rev. 2 is manufactured by NVIDIA. It was released in May 29 2013. It features the Kepler 2.0 architecture. The core clock speed is 1046 MHz. It has 384 shading units. The thermal design power (TDP) is 49W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,168 points. Launch price was $89.
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.
Graphics Performance
The GeForce GT 640 Rev. 2 scores 1,168 and the GeForce GT 650M reaches 1,187 in the G3D Mark benchmark — just a 1.6% difference, making them near-identical in rasterization performance. The GeForce GT 640 Rev. 2 is built on Kepler 2.0 while the GeForce GT 650M uses Kepler, both on a 28 nm process. Shader units: 384 (GeForce GT 640 Rev. 2) vs 384 (GeForce GT 650M). Raw compute: 0.8033 TFLOPS (GeForce GT 640 Rev. 2) vs 0.7296 TFLOPS (GeForce GT 650M).
| Feature | GeForce GT 640 Rev. 2 | GeForce GT 650M |
|---|---|---|
| G3D Mark Score | 1,168 | 1,187+2% |
| Architecture | Kepler 2.0 | Kepler |
| Process Node | 28 nm | 28 nm |
| Shading Units | 384 | 384 |
| Compute (TFLOPS) | 0.8033 TFLOPS+10% | 0.7296 TFLOPS |
| ROPs | 8 | 16+100% |
| TMUs | 32 | 32 |
| L1 Cache | 32 KB | 32 KB |
| L2 Cache | 128 KB | 256 KB+100% |
Advanced Features (DLSS/FSR)
| Feature | GeForce GT 640 Rev. 2 | GeForce GT 650M |
|---|---|---|
| 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 640 Rev. 2 comes with 512 MB of VRAM, while the GeForce GT 650M has 2 GB. The GeForce GT 650M offers 300% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 64-bit vs 128-bit. L2 Cache: 128 KB (GeForce GT 640 Rev. 2) vs 256 KB (GeForce GT 650M) — the GeForce GT 650M has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce GT 640 Rev. 2 | GeForce GT 650M |
|---|---|---|
| VRAM Capacity | 0.5 GB | 2 GB+300% |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 64-bit | 128-bit+100% |
| L2 Cache | 128 KB | 256 KB+100% |
Display & API Support
DirectX support: 12 (11_0) (GeForce GT 640 Rev. 2) vs 12 (FL11_0) (GeForce GT 650M). Vulkan: 1.2 vs 1.3. OpenGL: 4.6 vs 4.5. Maximum simultaneous displays: 3 vs 4.
| Feature | GeForce GT 640 Rev. 2 | GeForce GT 650M |
|---|---|---|
| DirectX | 12 (11_0) | 12 (FL11_0) |
| Vulkan | 1.2 | 1.3+8% |
| OpenGL | 4.6+2% | 4.5 |
| Max Displays | 3 | 4+33% |
Media & Encoding
Hardware encoder: NVENC (Kepler) (GeForce GT 640 Rev. 2) vs NVENC (Kepler) (GeForce GT 650M). Decoder: PureVideo HD 5 vs VP5. Supported codecs: H.264,MPEG-2,VC-1 (GeForce GT 640 Rev. 2) vs H.264,VC-1,MPEG-4,MPEG-1/2 (GeForce GT 650M).
| Feature | GeForce GT 640 Rev. 2 | GeForce GT 650M |
|---|---|---|
| Encoder | NVENC (Kepler) | NVENC (Kepler) |
| Decoder | PureVideo HD 5 | VP5 |
| Codecs | H.264,MPEG-2,VC-1 | H.264,VC-1,MPEG-4,MPEG-1/2 |
Power & Dimensions
The GeForce GT 640 Rev. 2 draws 49W versus the GeForce GT 650M's 45W — a 8.5% difference. The GeForce GT 650M is more power-efficient. Recommended PSU: 300W (GeForce GT 640 Rev. 2) vs 350W (GeForce GT 650M). Power connectors: None vs PCIe-powered. Card length: 145mm vs 0mm, occupying 1 vs 0 slots. Typical load temperature: 65 vs 85°C.
| Feature | GeForce GT 640 Rev. 2 | GeForce GT 650M |
|---|---|---|
| TDP | 49W | 45W-8% |
| Recommended PSU | 300W-14% | 350W |
| Power Connector | None | PCIe-powered |
| Length | 145mm | 0mm |
| Height | 111mm | 0mm |
| Slots | 1 | 0-100% |
| Temp (Load) | 65-24% | 85°C |
| Perf/Watt | 23.8 | 26.4+11% |
Value Analysis
The GeForce GT 640 Rev. 2 is the newer GPU (2013 vs 2012).
| Feature | GeForce GT 640 Rev. 2 | GeForce GT 650M |
|---|---|---|
| MSRP | $99 | — |
| Avg Price (30d) | $99 | — |
| Codename | GK208 | GK107 |
| Release | May 29 2013 | March 22 2012 |
| Ranking | #786 | #828 |
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