GeForce GT 635M vs GeForce GT 820M
GeForce GT 635M
Popular choices:
GeForce GT 820M
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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 635M is positioned at rank 138 and the GeForce GT 820M is on rank 134, so the GeForce GT 820M 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 635M
Performance Per Dollar GeForce GT 820M
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The GeForce GT 820M is the superior choice for raw performance. It leads with a 0.4% higher G3D Mark score. However, the GeForce GT 635M offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | GeForce GT 635M | GeForce GT 820M |
|---|---|---|
| Performance | ❌Lower raw frame rates (-0.4%) | ✅Leading raw performance (+0.4%) |
| Longevity | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) | 🛑Obsolete Architecture (2014 / Maxwell 2.0 (2014−2019)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+200%) | ❌ Less VRAM capacity |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | — | — |
💎 Value Proposition
While current pricing data is unavailable, the GeForce GT 820M 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 635M and GeForce GT 820M
GeForce GT 635M
The GeForce GT 635M is manufactured by NVIDIA. It was released in March 22 2012. It features the Kepler architecture. The core clock ranges from Up to 900 MHz to 950 MHz. It has 384 shading units. The thermal design power (TDP) is 45W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 540 points.
GeForce GT 820M
The GeForce GT 820M is manufactured by NVIDIA. It was released in October 7 2014. It features the Maxwell 2.0 architecture. The core clock ranges from 1038 MHz to 1127 MHz. It has 1536 shading units. The thermal design power (TDP) is 100W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 542 points.
Graphics Performance
The GeForce GT 635M scores 540 and the GeForce GT 820M reaches 542 in the G3D Mark benchmark — just a 0.4% difference, making them near-identical in rasterization performance. The GeForce GT 635M is built on Kepler while the GeForce GT 820M uses Maxwell 2.0, both on a 28 nm process. Shader units: 384 (GeForce GT 635M) vs 1,536 (GeForce GT 820M). Raw compute: 0.7296 TFLOPS (GeForce GT 635M) vs 1.659 TFLOPS (GeForce GT 820M). Boost clocks: 950 MHz vs 1127 MHz.
| Feature | GeForce GT 635M | GeForce GT 820M |
|---|---|---|
| G3D Mark Score | 540 | 542 |
| Architecture | Kepler | Maxwell 2.0 |
| Process Node | 28 nm | 28 nm |
| Shading Units | 384 | 1536+300% |
| Compute (TFLOPS) | 0.7296 TFLOPS | 1.659 TFLOPS+127% |
| Boost Clock | 950 MHz | 1127 MHz+19% |
| ROPs | 16 | 64+300% |
| TMUs | 32 | 96+200% |
| L1 Cache | 32 KB | 576 KB+1700% |
| L2 Cache | 0.25 MB | 2 MB+700% |
Advanced Features (DLSS/FSR)
| Feature | GeForce GT 635M | GeForce GT 820M |
|---|---|---|
| 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 635M comes with 2 GB of VRAM, while the GeForce GT 820M has 512 MB. The GeForce GT 635M offers 200% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 64-bit. L2 Cache: 0.25 MB (GeForce GT 635M) vs 2 MB (GeForce GT 820M) — the GeForce GT 820M has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce GT 635M | GeForce GT 820M |
|---|---|---|
| VRAM Capacity | 1.5 GB+200% | 0.5 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 128-bit+100% | 64-bit |
| L2 Cache | 0.25 MB | 2 MB+700% |
Display & API Support
DirectX support: 11.0 (GeForce GT 635M) vs 11.0 (GeForce GT 820M). OpenGL: 4.1 vs 4.0. Maximum simultaneous displays: 2 vs 1.
| Feature | GeForce GT 635M | GeForce GT 820M |
|---|---|---|
| DirectX | 11.0 | 11.0 |
| OpenGL | 4.1+2% | 4.0 |
| Max Displays | 2+100% | 1 |
Media & Encoding
Hardware encoder: PureVideo HD (VP4) (GeForce GT 635M) vs No (GeForce GT 820M). Decoder: PureVideo HD (VP4) vs PureVideo HD VP4. Supported codecs: H.264,MPEG-2,VC-1 (GeForce GT 635M) vs MPEG-2,H.264,VC-1,MPEG-4 ASP (GeForce GT 820M).
| Feature | GeForce GT 635M | GeForce GT 820M |
|---|---|---|
| Encoder | PureVideo HD (VP4) | No |
| Decoder | PureVideo HD (VP4) | PureVideo HD VP4 |
| Codecs | H.264,MPEG-2,VC-1 | MPEG-2,H.264,VC-1,MPEG-4 ASP |
Power & Dimensions
The GeForce GT 635M draws 45W versus the GeForce GT 820M's 100W — a 75.9% difference. The GeForce GT 635M is more power-efficient. Recommended PSU: 350W (GeForce GT 635M) vs 350W (GeForce GT 820M). Power connectors: PCIe-powered vs PCIe-powered. Typical load temperature: 80 vs 70°C.
| Feature | GeForce GT 635M | GeForce GT 820M |
|---|---|---|
| TDP | 45W-55% | 100W |
| Recommended PSU | 350W | 350W |
| Power Connector | PCIe-powered | PCIe-powered |
| Length | — | 0mm |
| Height | — | 0mm |
| Slots | 0 | 0 |
| Temp (Load) | 80 | 70°C-13% |
| Perf/Watt | 12.0+122% | 5.4 |
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The most powerful gpus ranked by G3D Mark benchmark scores.
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