
GeForce GTX 765M
Popular choices:

GeForce GT 645
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 GTX 765M is positioned at rank 109 and the GeForce GT 645 is on rank 242, 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 GTX 765M
Performance Per Dollar GeForce GT 645
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 GTX 765M | GeForce GT 645 |
|---|---|---|
| Performance | ✅Leading raw performance (+0.4%) | ❌Lower raw frame rates (-0.4%) |
| Longevity | 🛑Obsolete Architecture (2013 / Kepler (2012−2018)) | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+0%) |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| 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 GTX 765M and GeForce GT 645

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.

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.
Graphics Performance
The GeForce GTX 765M scores 2,014 and the GeForce GT 645 reaches 2,006 in the G3D Mark benchmark — just a 0.4% difference, making them near-identical in rasterization performance. The GeForce GTX 765M is built on Kepler while the GeForce GT 645 uses Kepler, both on a 28 nm process. Shader units: 768 (GeForce GTX 765M) vs 384 (GeForce GT 645). Raw compute: 1.326 TFLOPS (GeForce GTX 765M) vs 0.5445 TFLOPS (GeForce GT 645).
| Feature | GeForce GTX 765M | GeForce GT 645 |
|---|---|---|
| G3D Mark Score | 2,014 | 2,006 |
| Architecture | Kepler | Kepler |
| Process Node | 28 nm | 28 nm |
| Shading Units | 768+100% | 384 |
| Compute (TFLOPS) | 1.326 TFLOPS+144% | 0.5445 TFLOPS |
| ROPs | 16 | 16 |
| TMUs | 64+100% | 32 |
| L1 Cache | 64 KB+100% | 32 KB |
| L2 Cache | 256 KB | 256 KB |
Advanced Features (DLSS/FSR)
| Feature | GeForce GTX 765M | GeForce GT 645 |
|---|---|---|
| Upscaling Tech | FSR 2.1 (Compatible) | FSR 1.0 (Software) |
| Frame Generation | FSR 3 (Compatible) | Not Supported |
| 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 GTX 765M | GeForce GT 645 |
|---|---|---|
| VRAM Capacity | 2 GB | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | 80 GB/s | Unknown |
| Bus Width | 128-bit | 128-bit |
| L2 Cache | 256 KB | 256 KB |
Display & API Support
DirectX support: 12 (11_0) (GeForce GTX 765M) vs 12 (11_0) (GeForce GT 645). Vulkan: 1.2 vs 1.2. OpenGL: 4.6 vs 4.6. Maximum simultaneous displays: 4 vs 3.
| Feature | GeForce GTX 765M | GeForce GT 645 |
|---|---|---|
| DirectX | 12 (11_0) | 12 (11_0) |
| Vulkan | 1.2 | 1.2 |
| OpenGL | 4.6 | 4.6 |
| Max Displays | 4+33% | 3 |
Media & Encoding
Hardware encoder: 1st Gen NVENC (GeForce GTX 765M) vs NVENC (1st Gen) (GeForce GT 645). Decoder: 1st Gen NVDEC (VP5) vs NVDEC (1st Gen). Supported codecs: H.264,VC-1,MPEG-2,MPEG-4 (GeForce GTX 765M) vs H.264,MPEG-2,VC-1 (GeForce GT 645).
| Feature | GeForce GTX 765M | GeForce GT 645 |
|---|---|---|
| Encoder | 1st Gen NVENC | NVENC (1st Gen) |
| Decoder | 1st Gen NVDEC (VP5) | NVDEC (1st Gen) |
| Codecs | H.264,VC-1,MPEG-2,MPEG-4 | H.264,MPEG-2,VC-1 |
Power & Dimensions
The GeForce GTX 765M draws 75W versus the GeForce GT 645's 32W — a 80.4% difference. The GeForce GT 645 is more power-efficient. Recommended PSU: 350W (GeForce GTX 765M) vs 350W (GeForce GT 645). Power connectors: 1x 6-pin vs PCIe-powered. Typical load temperature: 80°C vs 80.
| Feature | GeForce GTX 765M | GeForce GT 645 |
|---|---|---|
| TDP | 75W | 32W-57% |
| Recommended PSU | 350W | 350W |
| Power Connector | 1x 6-pin | PCIe-powered |
| Length | — | 145mm |
| Height | — | 111mm |
| Slots | 0-100% | 1 |
| Temp (Load) | 80°C | 80 |
| Perf/Watt | 26.9 | 62.7+133% |
Value Analysis
The GeForce GTX 765M is the newer GPU (2013 vs 2012).
| Feature | GeForce GTX 765M | GeForce GT 645 |
|---|---|---|
| MSRP | — | $99 |
| Avg Price (30d) | — | $15 |
| Codename | GK106 | GK107 |
| Release | May 30 2013 | October 1 2012 |
| Ranking | #680 | #903 |
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