Intel HD Graphics 620 vs GeForce GT 645M
Intel HD Graphics 620
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GeForce GT 645M
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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.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar
Performance Per Dollar GeForce GT 645M
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 | Intel HD Graphics 620 | GeForce GT 645M |
|---|---|---|
| Performance | ❌Lower raw frame rates (-2.8%) | ✅Leading raw performance (+2.8%) |
| Longevity | 🛑Obsolete Architecture (2016 / Generation 9.5 (2016−2020)) | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+100+%) |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| 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 Intel HD Graphics 620 and GeForce GT 645M
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.
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.
Graphics Performance
The Intel HD Graphics 620 scores 919 and the GeForce GT 645M reaches 945 in the G3D Mark benchmark — just a 2.8% difference, making them near-identical in rasterization performance. The Intel HD Graphics 620 is built on Generation 9.5 while the GeForce GT 645M uses Kepler, both on 14 nm++ vs 28 nm. Shader units: 192 (Intel HD Graphics 620) vs 384 (GeForce GT 645M). Raw compute: 0.384 TFLOPS (Intel HD Graphics 620) vs 0.5445 TFLOPS (GeForce GT 645M).
| Feature | Intel HD Graphics 620 | GeForce GT 645M |
|---|---|---|
| G3D Mark Score | 919 | 945+3% |
| Architecture | Generation 9.5 | Kepler |
| Process Node | 14 nm++ | 28 nm |
| Shading Units | 192 | 384+100% |
| Compute (TFLOPS) | 0.384 TFLOPS | 0.5445 TFLOPS+42% |
| ROPs | 3 | 16+433% |
| TMUs | 24 | 32+33% |
Advanced Features (DLSS/FSR)
| Feature | Intel HD Graphics 620 | GeForce GT 645M |
|---|---|---|
| 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 Intel HD Graphics 620 comes with 0 MB of VRAM, while the GeForce GT 645M has 2 GB. The GeForce GT 645M offers 100+% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: System vs 128-bit.
| Feature | Intel HD Graphics 620 | GeForce GT 645M |
|---|---|---|
| VRAM Capacity | Shared System RAM | 2 GB |
| Memory Type | Shared | GDDR5 |
| Memory Bandwidth | System | Unknown |
| Bus Width | System | 128-bit |
Display & API Support
DirectX support: 12 (12_1) (Intel HD Graphics 620) vs 11.0 (GeForce GT 645M). Vulkan: 1.2 vs 1.1. OpenGL: 4.6 vs 4.5. Maximum simultaneous displays: 3 vs 1.
| Feature | Intel HD Graphics 620 | GeForce GT 645M |
|---|---|---|
| DirectX | 12 (12_1)+9% | 11.0 |
| Vulkan | 1.2+9% | 1.1 |
| OpenGL | 4.6+2% | 4.5 |
| Max Displays | 3+200% | 1 |
Media & Encoding
Hardware encoder: Quick Sync Video (Intel HD Graphics 620) vs NVENC 1.0 (GeForce GT 645M). Decoder: Quick Sync Video vs PureVideo HD VP5. Supported codecs: H.265/HEVC,H.264,VP9,MPEG-2,VC-1,JPEG (Intel HD Graphics 620) vs MPEG-2,H.264,VC-1,MPEG-4 ASP (GeForce GT 645M).
| Feature | Intel HD Graphics 620 | GeForce GT 645M |
|---|---|---|
| Encoder | Quick Sync Video | NVENC 1.0 |
| Decoder | Quick Sync Video | PureVideo HD VP5 |
| Codecs | H.265/HEVC,H.264,VP9,MPEG-2,VC-1,JPEG | MPEG-2,H.264,VC-1,MPEG-4 ASP |
Power & Dimensions
The Intel HD Graphics 620 draws 15W versus the GeForce GT 645M's 32W — a 72.3% difference. The Intel HD Graphics 620 is more power-efficient. Recommended PSU: 1W (Intel HD Graphics 620) vs 350W (GeForce GT 645M). Power connectors: Integrated vs PCIe-powered. Typical load temperature: 90°C vs 70°C.
| Feature | Intel HD Graphics 620 | GeForce GT 645M |
|---|---|---|
| TDP | 15W-53% | 32W |
| Recommended PSU | 1W-100% | 350W |
| Power Connector | Integrated | PCIe-powered |
| Length | — | 0mm |
| Height | — | 0mm |
| Slots | 0 | 0 |
| Temp (Load) | 90°C | 70°C-22% |
| Perf/Watt | 61.3+108% | 29.5 |
Value Analysis
The Intel HD Graphics 620 is the newer GPU (2016 vs 2012).
| Feature | Intel HD Graphics 620 | GeForce GT 645M |
|---|---|---|
| MSRP | $0 | — |
| Avg Price (30d) | $0 | — |
| Codename | Kaby Lake GT2 | GK107 |
| Release | August 30 2016 | October 1 2012 |
| Ranking | #906 | #903 |
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