GeForce GT 640 vs Radeon HD 7750M
GeForce GT 640
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Radeon HD 7750M
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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 Radeon HD 7750M is on rank 353, 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 640
Performance Per Dollar Radeon HD 7750M
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Radeon HD 7750M is the superior choice for raw performance. It leads with a 1.9% 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 640 | Radeon HD 7750M |
|---|---|---|
| Performance | ❌Lower raw frame rates (-1.9%) | ✅Leading raw performance (+1.9%) |
| Longevity | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) | 🛑Obsolete Architecture (2012 / GCN 1.0 (2012−2020)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+100%) | ❌ Less VRAM capacity |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | 📏 Compact / SFF Friendly | — |
💎 Value Proposition
While current pricing data is unavailable, the Radeon HD 7750M 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 Radeon HD 7750M
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.
Radeon HD 7750M
The Radeon HD 7750M is manufactured by AMD. It was released in April 24 2012. It features the GCN 1.0 architecture. The core clock speed is 575 MHz. It has 512 shading units. The thermal design power (TDP) is 28W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,191 points.
Graphics Performance
The GeForce GT 640 scores 1,169 and the Radeon HD 7750M reaches 1,191 in the G3D Mark benchmark — just a 1.9% difference, making them near-identical in rasterization performance. The GeForce GT 640 is built on Kepler while the Radeon HD 7750M uses GCN 1.0, both on a 28 nm process. Shader units: 384 (GeForce GT 640) vs 512 (Radeon HD 7750M). Raw compute: 0.6927 TFLOPS (GeForce GT 640) vs 0.5888 TFLOPS (Radeon HD 7750M).
| Feature | GeForce GT 640 | Radeon HD 7750M |
|---|---|---|
| G3D Mark Score | 1,169 | 1,191+2% |
| Architecture | Kepler | GCN 1.0 |
| Process Node | 28 nm | 28 nm |
| Shading Units | 384 | 512+33% |
| Compute (TFLOPS) | 0.6927 TFLOPS+18% | 0.5888 TFLOPS |
| ROPs | 16 | 16 |
| TMUs | 32 | 32 |
| L1 Cache | 32 KB | 128 KB+300% |
| L2 Cache | 256 KB | 256 KB |
Advanced Features (DLSS/FSR)
| Feature | GeForce GT 640 | Radeon HD 7750M |
|---|---|---|
| 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)
The GeForce GT 640 comes with 4 GB of VRAM, while the Radeon HD 7750M has 2 GB. The GeForce GT 640 offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs System.
| Feature | GeForce GT 640 | Radeon HD 7750M |
|---|---|---|
| VRAM Capacity | 4 GB+100% | 2 GB |
| Memory Type | GDDR5 | Shared |
| Memory Bandwidth | Unknown | System |
| Bus Width | 128-bit | System |
| L2 Cache | 256 KB | 256 KB |
Display & API Support
DirectX support: 11.0 (GeForce GT 640) vs 12 (Radeon HD 7750M). Vulkan: 1.1 vs 1.2. OpenGL: 4.5 vs 4.6. Maximum simultaneous displays: 3 vs 6.
| Feature | GeForce GT 640 | Radeon HD 7750M |
|---|---|---|
| DirectX | 11.0 | 12+9% |
| Vulkan | 1.1 | 1.2+9% |
| OpenGL | 4.5 | 4.6+2% |
| Max Displays | 3 | 6+100% |
Media & Encoding
Hardware encoder: NVENC 1.0 (GeForce GT 640) vs VCE 1.0 (Radeon HD 7750M). Decoder: PureVideo HD VP5 vs UVD3. Supported codecs: MPEG-2,H.264,VC-1,MPEG-4 ASP (GeForce GT 640) vs H.264,VC-1,MPEG-2,MVC (Radeon HD 7750M).
| Feature | GeForce GT 640 | Radeon HD 7750M |
|---|---|---|
| Encoder | NVENC 1.0 | VCE 1.0 |
| Decoder | PureVideo HD VP5 | UVD3 |
| Codecs | MPEG-2,H.264,VC-1,MPEG-4 ASP | H.264,VC-1,MPEG-2,MVC |
Power & Dimensions
The GeForce GT 640 draws 65W versus the Radeon HD 7750M's 28W — a 79.6% difference. The Radeon HD 7750M is more power-efficient. Recommended PSU: 300W (GeForce GT 640) vs 350W (Radeon HD 7750M). Power connectors: None vs 1x 6-pin. Typical load temperature: 60°C vs 75°C.
| Feature | GeForce GT 640 | Radeon HD 7750M |
|---|---|---|
| TDP | 65W | 28W-57% |
| Recommended PSU | 300W-14% | 350W |
| Power Connector | None | 1x 6-pin |
| Length | 145mm | — |
| Height | 111mm | — |
| Slots | 1 | — |
| Temp (Load) | 60°C-20% | 75°C |
| Perf/Watt | 18.0 | 42.5+136% |
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