GeForce GT 645 vs GeForce GTX 765M
GeForce GT 645
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GeForce GTX 765M
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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 645 is positioned at rank 242 and the GeForce GTX 765M is on rank 109, so the GeForce GTX 765M 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 645
Performance Per Dollar GeForce GTX 765M
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The GeForce GTX 765M is the superior choice for raw performance. It leads with a 0.4% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the GeForce GT 645.
| Insight | GeForce GT 645 | GeForce GTX 765M |
|---|---|---|
| Performance | ❌Lower raw frame rates (-0.4%) | ✅Leading raw performance (+0.4%) |
| Longevity | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) | 🛑Obsolete Architecture (2013 / Kepler (2012−2018)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+0%) |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | 📏 Compact / SFF Friendly | — |
💎 Value Proposition
While current pricing data is unavailable, the GeForce GTX 765M 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 645 and GeForce GTX 765M
GeForce GT 645
The GeForce GT 645 is manufactured by NVIDIA. It was released in October 1 2012. It features the Kepler architecture. The core clock speed is Up to 710 MHz. It has 384 shading units. The thermal design power (TDP) is 32W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 2,006 points.
GeForce GTX 765M
The GeForce GTX 765M is manufactured by NVIDIA. It was released in May 30 2013. It features the Kepler architecture. The core clock ranges from 850 MHz to 863 MHz. It has 768 shading units. The thermal design power (TDP) is 75W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 2,014 points.
Graphics Performance
The GeForce GT 645 scores 2,006 and the GeForce GTX 765M reaches 2,014 in the G3D Mark benchmark — just a 0.4% difference, making them near-identical in rasterization performance. The GeForce GT 645 is built on Kepler while the GeForce GTX 765M uses Kepler, both on a 28 nm process. Shader units: 384 (GeForce GT 645) vs 768 (GeForce GTX 765M). Raw compute: 0.5445 TFLOPS (GeForce GT 645) vs 1.326 TFLOPS (GeForce GTX 765M).
| Feature | GeForce GT 645 | GeForce GTX 765M |
|---|---|---|
| G3D Mark Score | 2,006 | 2,014 |
| Architecture | Kepler | Kepler |
| Process Node | 28 nm | 28 nm |
| Shading Units | 384 | 768+100% |
| Compute (TFLOPS) | 0.5445 TFLOPS | 1.326 TFLOPS+144% |
| ROPs | 16 | 16 |
| TMUs | 32 | 64+100% |
| L1 Cache | 32 KB | 64 KB+100% |
| L2 Cache | 256 KB | 256 KB |
Advanced Features (DLSS/FSR)
| Feature | GeForce GT 645 | GeForce GTX 765M |
|---|---|---|
| Upscaling Tech | FSR 1.0 (Software) | FSR 2.1 (Compatible) |
| Frame Generation | Not Supported | FSR 3 (Compatible) |
| Ray Reconstruction | No | No |
| Low Latency | Standard | Standard |
Video Memory (VRAM)
Both cards feature 2 GB of GDDR5. Bus width: 128-bit vs 128-bit.
| Feature | GeForce GT 645 | GeForce GTX 765M |
|---|---|---|
| VRAM Capacity | 2 GB | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | 80 GB/s |
| Bus Width | 128-bit | 128-bit |
| L2 Cache | 256 KB | 256 KB |
Display & API Support
DirectX support: 12 (11_0) (GeForce GT 645) vs 12 (11_0) (GeForce GTX 765M). Vulkan: 1.2 vs 1.2. OpenGL: 4.6 vs 4.6. Maximum simultaneous displays: 3 vs 4.
| Feature | GeForce GT 645 | GeForce GTX 765M |
|---|---|---|
| DirectX | 12 (11_0) | 12 (11_0) |
| Vulkan | 1.2 | 1.2 |
| OpenGL | 4.6 | 4.6 |
| Max Displays | 3 | 4+33% |
Media & Encoding
Hardware encoder: NVENC (1st Gen) (GeForce GT 645) vs 1st Gen NVENC (GeForce GTX 765M). Decoder: NVDEC (1st Gen) vs 1st Gen NVDEC (VP5). Supported codecs: H.264,MPEG-2,VC-1 (GeForce GT 645) vs H.264,VC-1,MPEG-2,MPEG-4 (GeForce GTX 765M).
| Feature | GeForce GT 645 | GeForce GTX 765M |
|---|---|---|
| Encoder | NVENC (1st Gen) | 1st Gen NVENC |
| Decoder | NVDEC (1st Gen) | 1st Gen NVDEC (VP5) |
| Codecs | H.264,MPEG-2,VC-1 | H.264,VC-1,MPEG-2,MPEG-4 |
Power & Dimensions
The GeForce GT 645 draws 32W versus the GeForce GTX 765M's 75W — a 80.4% difference. The GeForce GT 645 is more power-efficient. Recommended PSU: 350W (GeForce GT 645) vs 350W (GeForce GTX 765M). Power connectors: PCIe-powered vs 1x 6-pin. Typical load temperature: 80 vs 80°C.
| Feature | GeForce GT 645 | GeForce GTX 765M |
|---|---|---|
| TDP | 32W-57% | 75W |
| Recommended PSU | 350W | 350W |
| Power Connector | PCIe-powered | 1x 6-pin |
| Length | 145mm | — |
| Height | 111mm | — |
| Slots | 1 | 0-100% |
| Temp (Load) | 80 | 80°C |
| Perf/Watt | 62.7+133% | 26.9 |
Value Analysis
The GeForce GTX 765M is the newer GPU (2013 vs 2012).
| Feature | GeForce GT 645 | GeForce GTX 765M |
|---|---|---|
| MSRP | $99 | — |
| Avg Price (30d) | $15 | — |
| Codename | GK107 | GK106 |
| Release | October 1 2012 | May 30 2013 |
| Ranking | #903 | #680 |
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