CPU
GPU
GeForce GT 635M
Popular choices:
Mobility Radeon HD 3870
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 GT 635M is positioned at rank 138 and the Mobility Radeon HD 3870 is on rank 509, so the GeForce GT 635M 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 Mobility Radeon HD 3870
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Mobility Radeon HD 3870 is the superior choice for raw performance. It leads with a 1.5% 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 | Mobility Radeon HD 3870 |
|---|---|---|
| Performance | ❌Lower raw frame rates (-1.5%) | ✅Leading raw performance (+1.5%) |
| Longevity | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) | 🛑Obsolete Architecture (2010 / TeraScale 2 (2009−2015)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+200%) | ❌ Less VRAM capacity |
| Efficiency | Normal Efficiency | Normal Efficiency |
| Case Fit | — | 📏 Compact / SFF Friendly |
💎 Value Proposition
While current pricing data is unavailable, the Mobility Radeon HD 3870 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 Mobility Radeon HD 3870
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.
Mobility Radeon HD 3870
The Mobility Radeon HD 3870 is manufactured by AMD. It was released in January 7 2010. It features the TeraScale 2 architecture. The core clock speed is 700 MHz. It has 800 shading units. The thermal design power (TDP) is 50W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 548 points.
Graphics Performance
The GeForce GT 635M scores 540 and the Mobility Radeon HD 3870 reaches 548 in the G3D Mark benchmark — just a 1.5% difference, making them near-identical in rasterization performance. The GeForce GT 635M is built on Kepler while the Mobility Radeon HD 3870 uses TeraScale 2, both on 28 nm vs 40 nm. Shader units: 384 (GeForce GT 635M) vs 800 (Mobility Radeon HD 3870). Raw compute: 0.7296 TFLOPS (GeForce GT 635M) vs 1.12 TFLOPS (Mobility Radeon HD 3870).
| Feature | GeForce GT 635M | Mobility Radeon HD 3870 |
|---|---|---|
| G3D Mark Score | 540 | 548+1% |
| Architecture | Kepler | TeraScale 2 |
| Process Node | 28 nm | 40 nm |
| Shading Units | 384 | 800+108% |
| Compute (TFLOPS) | 0.7296 TFLOPS | 1.12 TFLOPS+54% |
| ROPs | 16 | 16 |
| TMUs | 32 | 40+25% |
| L1 Cache | 32 KB | 80 KB+150% |
| L2 Cache | 256 KB | 256 KB |
Advanced Features (DLSS/FSR)
| Feature | GeForce GT 635M | Mobility Radeon HD 3870 |
|---|---|---|
| Upscaling Tech | FSR 1.0 (Software) | FSR 1.0 (Software) |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | Standard | AMD Anti-Lag |
Video Memory (VRAM)
The GeForce GT 635M comes with 2 GB of VRAM, while the Mobility Radeon HD 3870 has 512 MB. The GeForce GT 635M offers 200% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 128-bit.
| Feature | GeForce GT 635M | Mobility Radeon HD 3870 |
|---|---|---|
| VRAM Capacity | 1.5 GB+200% | 0.5 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 128-bit | 128-bit |
| L2 Cache | 256 KB | 256 KB |
Display & API Support
DirectX support: 11.0 (GeForce GT 635M) vs 10.1 (Mobility Radeon HD 3870). Maximum simultaneous displays: 2 vs 0.
| Feature | GeForce GT 635M | Mobility Radeon HD 3870 |
|---|---|---|
| DirectX | 11.0+9% | 10.1 |
| Max Displays | 2 | 0 |
Media & Encoding
Hardware encoder: PureVideo HD (VP4) (GeForce GT 635M) vs UVD (Mobility Radeon HD 3870). Decoder: PureVideo HD (VP4) vs UVD.
| Feature | GeForce GT 635M | Mobility Radeon HD 3870 |
|---|---|---|
| Encoder | PureVideo HD (VP4) | UVD |
| Decoder | PureVideo HD (VP4) | UVD |
| Codecs | H.264,MPEG-2,VC-1 | — |
Power & Dimensions
The GeForce GT 635M draws 45W versus the Mobility Radeon HD 3870's 50W — a 10.5% difference. The GeForce GT 635M is more power-efficient. Recommended PSU: 350W (GeForce GT 635M) vs 350W (Mobility Radeon HD 3870). Power connectors: PCIe-powered vs PCIe-powered.
| Feature | GeForce GT 635M | Mobility Radeon HD 3870 |
|---|---|---|
| TDP | 45W-10% | 50W |
| Recommended PSU | 350W | 350W |
| Power Connector | PCIe-powered | PCIe-powered |
| Length | — | 1mm |
| Slots | 0 | 0 |
| Temp (Load) | 80 | — |
| Perf/Watt | 12.0+9% | 11.0 |
Value Analysis
The GeForce GT 635M is the newer GPU (2012 vs 2010).
| Feature | GeForce GT 635M | Mobility Radeon HD 3870 |
|---|---|---|
| MSRP | — | $129 |
| Avg Price (30d) | — | $15 |
| Codename | GK107 | Broadway |
| Release | March 22 2012 | January 7 2010 |
| Ranking | #828 | #846 |
Top Performing GPUs
The most powerful gpus ranked by G3D Mark benchmark scores.
You May Also Compare
Similar GPU comparisons based on GeForce GT 635M and Mobility Radeon HD 3870
