GeForce GT 645M vs Intel HD Graphics 620
GeForce GT 645M
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Intel HD Graphics 620
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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. The GeForce GT 645M is positioned at rank #80 in our cost-efficiency ranking, representing a Balanced cost-benefit for your build. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar GeForce GT 645M
Performance Per Dollar
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The GeForce GT 645M is the superior choice for raw performance. It leads with a 2.8% higher G3D Mark score and 100+% more VRAM (2 GB vs 0 MB). This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Intel HD Graphics 620.
| Insight | GeForce GT 645M | Intel HD Graphics 620 |
|---|---|---|
| Performance | ✅Leading raw performance (+2.8%) | ❌Lower raw frame rates (-2.8%) |
| Longevity | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) | 🛑Obsolete Architecture (2016 / Generation 9.5 (2016−2020)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+100+%) | ❌ Less VRAM capacity |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | — | — |
💎 Value Proposition
While current pricing data is unavailable, the GeForce GT 645M 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 645M and Intel HD Graphics 620
GeForce GT 645M
The GeForce GT 645M 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: 945 points.
Intel HD Graphics 620
The Intel HD Graphics 620 is manufactured by Intel. It was released in August 30 2016. It features the Generation 9.5 architecture. The core clock ranges from 300 MHz to 1000 MHz. It has 192 shading units. The thermal design power (TDP) is 15W. Manufactured using 14 nm++ process technology. G3D Mark benchmark score: 919 points.
Graphics Performance
The GeForce GT 645M scores 945 and the Intel HD Graphics 620 reaches 919 in the G3D Mark benchmark — just a 2.8% difference, making them near-identical in rasterization performance. The GeForce GT 645M is built on Kepler while the Intel HD Graphics 620 uses Generation 9.5, both on 28 nm vs 14 nm++. Shader units: 384 (GeForce GT 645M) vs 192 (Intel HD Graphics 620). Raw compute: 0.5445 TFLOPS (GeForce GT 645M) vs 0.384 TFLOPS (Intel HD Graphics 620).
| Feature | GeForce GT 645M | Intel HD Graphics 620 |
|---|---|---|
| G3D Mark Score | 945+3% | 919 |
| Architecture | Kepler | Generation 9.5 |
| Process Node | 28 nm | 14 nm++ |
| Shading Units | 384+100% | 192 |
| Compute (TFLOPS) | 0.5445 TFLOPS+42% | 0.384 TFLOPS |
| ROPs | 16+433% | 3 |
| TMUs | 32+33% | 24 |
Advanced Features (DLSS/FSR)
| Feature | GeForce GT 645M | Intel HD Graphics 620 |
|---|---|---|
| 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 645M comes with 2 GB of VRAM, while the Intel HD Graphics 620 has 0 MB. The GeForce GT 645M offers 100+% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs System.
| Feature | GeForce GT 645M | Intel HD Graphics 620 |
|---|---|---|
| VRAM Capacity | 2 GB | Shared System RAM |
| Memory Type | GDDR5 | Shared |
| Memory Bandwidth | Unknown | System |
| Bus Width | 128-bit | System |
Display & API Support
DirectX support: 11.0 (GeForce GT 645M) vs 12 (12_1) (Intel HD Graphics 620). Vulkan: 1.1 vs 1.2. OpenGL: 4.5 vs 4.6. Maximum simultaneous displays: 1 vs 3.
| Feature | GeForce GT 645M | Intel HD Graphics 620 |
|---|---|---|
| DirectX | 11.0 | 12 (12_1)+9% |
| Vulkan | 1.1 | 1.2+9% |
| OpenGL | 4.5 | 4.6+2% |
| Max Displays | 1 | 3+200% |
Media & Encoding
Hardware encoder: NVENC 1.0 (GeForce GT 645M) vs Quick Sync Video (Intel HD Graphics 620). Decoder: PureVideo HD VP5 vs Quick Sync Video. Supported codecs: MPEG-2,H.264,VC-1,MPEG-4 ASP (GeForce GT 645M) vs H.265/HEVC,H.264,VP9,MPEG-2,VC-1,JPEG (Intel HD Graphics 620).
| Feature | GeForce GT 645M | Intel HD Graphics 620 |
|---|---|---|
| Encoder | NVENC 1.0 | Quick Sync Video |
| Decoder | PureVideo HD VP5 | Quick Sync Video |
| Codecs | MPEG-2,H.264,VC-1,MPEG-4 ASP | H.265/HEVC,H.264,VP9,MPEG-2,VC-1,JPEG |
Power & Dimensions
The GeForce GT 645M draws 32W versus the Intel HD Graphics 620's 15W — a 72.3% difference. The Intel HD Graphics 620 is more power-efficient. Recommended PSU: 350W (GeForce GT 645M) vs 1W (Intel HD Graphics 620). Power connectors: PCIe-powered vs Integrated. Typical load temperature: 70°C vs 90°C.
| Feature | GeForce GT 645M | Intel HD Graphics 620 |
|---|---|---|
| TDP | 32W | 15W-53% |
| Recommended PSU | 350W | 1W-100% |
| Power Connector | PCIe-powered | Integrated |
| Length | 0mm | — |
| Height | 0mm | — |
| Slots | 0 | 0 |
| Temp (Load) | 70°C-22% | 90°C |
| Perf/Watt | 29.5 | 61.3+108% |
Value Analysis
The Intel HD Graphics 620 is the newer GPU (2016 vs 2012).
| Feature | GeForce GT 645M | Intel HD Graphics 620 |
|---|---|---|
| MSRP | — | $0 |
| Avg Price (30d) | — | $0 |
| Codename | GK107 | Kaby Lake GT2 |
| Release | October 1 2012 | August 30 2016 |
| Ranking | #903 | #906 |
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