CPU
GPU
Mobility Radeon HD 3870 X2
Popular choices:
Radeon HD 7640G + HD 8570M Dual
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 Mobility Radeon HD 3870 X2 is positioned at rank 689 and the Radeon HD 7640G + HD 8570M Dual is on rank 578, so the Radeon HD 7640G + HD 8570M Dual offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Mobility Radeon HD 3870 X2
Performance Per Dollar Radeon HD 7640G + HD 8570M Dual
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Mobility Radeon HD 3870 X2 is the superior choice for raw performance. It leads with a 0.6% higher G3D Mark score. However, the Radeon HD 7640G + HD 8570M Dual offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | Mobility Radeon HD 3870 X2 | Radeon HD 7640G + HD 8570M Dual |
|---|---|---|
| Performance | ✅Leading raw performance (+0.6%) | ❌Lower raw frame rates (-0.6%) |
| Longevity | 🛑Obsolete Architecture (2008 / TeraScale (2005−2013)) | 🛑Obsolete Architecture (2013 / Legacy) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+24900%) |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | 📏 Compact / SFF Friendly | — |
💎 Value Proposition
The Radeon HD 7640G + HD 8570M Dual offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the Radeon HD 7640G + HD 8570M Dual holds the technical lead. Priced at $40 (vs $50), it costs 20% less, resulting in a 24.2% higher cost efficiency score.
| Insight | Mobility Radeon HD 3870 X2 | Radeon HD 7640G + HD 8570M Dual |
|---|---|---|
| Cost Efficiency | ❌Lower cost efficiency | ✅Better overall value (+24.2%) |
| Upfront Cost | ⚠️Higher upfront cost ($50) | ✅More affordable ($40) |
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 Mobility Radeon HD 3870 X2 and Radeon HD 7640G + HD 8570M Dual
Mobility Radeon HD 3870 X2
The Mobility Radeon HD 3870 X2 is manufactured by AMD. It was released in September 1 2008. It features the TeraScale architecture. The core clock speed is 660 MHz. It has 320 ×2 shading units. The thermal design power (TDP) is 110W. Manufactured using 55 nm process technology. G3D Mark benchmark score: 478 points.
Radeon HD 7640G + HD 8570M Dual
The Radeon HD 7640G + HD 8570M Dual is manufactured by AMD. It was released in August 1 2013. The core clock speed is 720 / 775 MHz. It has 768 shading units. The thermal design power (TDP) is 50W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 475 points.
Graphics Performance
The Mobility Radeon HD 3870 X2 scores 478 and the Radeon HD 7640G + HD 8570M Dual reaches 475 in the G3D Mark benchmark — just a 0.6% difference, making them near-identical in rasterization performance. Shader units: 320 (Mobility Radeon HD 3870 X2) vs 768 (Radeon HD 7640G + HD 8570M Dual).
| Feature | Mobility Radeon HD 3870 X2 | Radeon HD 7640G + HD 8570M Dual |
|---|---|---|
| G3D Mark Score | 478 | 475 |
| Process Node | 55 nm | 28 nm |
| Shading Units | 320 ×2 | 768+140% |
Advanced Features (DLSS/FSR)
| Feature | Mobility Radeon HD 3870 X2 | Radeon HD 7640G + HD 8570M Dual |
|---|---|---|
| Upscaling Tech | FSR 1.0 (Software) | FSR 1.0 (Software) |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | AMD Anti-Lag | AMD Anti-Lag |
Video Memory (VRAM)
The Mobility Radeon HD 3870 X2 comes with 2 MB of VRAM, while the Radeon HD 7640G + HD 8570M Dual has 512 MB. The Radeon HD 7640G + HD 8570M Dual offers 24900% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 64-bit vs 128-bit.
| Feature | Mobility Radeon HD 3870 X2 | Radeon HD 7640G + HD 8570M Dual |
|---|---|---|
| VRAM Capacity | 0.002 GB | 0.5 GB+24900% |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 64-bit | 128-bit+100% |
Display & API Support
DirectX support: 10.1 (Mobility Radeon HD 3870 X2) vs 11.2 (Radeon HD 7640G + HD 8570M Dual). Maximum simultaneous displays: 0 vs 2.
| Feature | Mobility Radeon HD 3870 X2 | Radeon HD 7640G + HD 8570M Dual |
|---|---|---|
| DirectX | 10.1 | 11.2+11% |
| Max Displays | 0 | 2 |
Media & Encoding
Hardware encoder: UVD (Mobility Radeon HD 3870 X2) vs None (Radeon HD 7640G + HD 8570M Dual). Decoder: UVD vs UVD 3.0.
| Feature | Mobility Radeon HD 3870 X2 | Radeon HD 7640G + HD 8570M Dual |
|---|---|---|
| Encoder | UVD | None |
| Decoder | UVD | UVD 3.0 |
| Codecs | — | H.264,VC-1,MPEG-2,MPEG-4 |
Power & Dimensions
The Mobility Radeon HD 3870 X2 draws 110W versus the Radeon HD 7640G + HD 8570M Dual's 50W — a 75% difference. The Radeon HD 7640G + HD 8570M Dual is more power-efficient. Recommended PSU: 350W (Mobility Radeon HD 3870 X2) vs 350W (Radeon HD 7640G + HD 8570M Dual). Power connectors: PCIe-powered vs 1x 6-pin.
| Feature | Mobility Radeon HD 3870 X2 | Radeon HD 7640G + HD 8570M Dual |
|---|---|---|
| TDP | 110W | 50W-55% |
| Recommended PSU | 350W | 350W |
| Power Connector | PCIe-powered | 1x 6-pin |
| Length | 1mm | — |
| Slots | 0 | — |
| Perf/Watt | 4.3 | 9.5+121% |
Value Analysis
The Mobility Radeon HD 3870 X2 launched at $449 MSRP and currently averages $50, while the Radeon HD 7640G + HD 8570M Dual launched at $150 and now averages $40. The Radeon HD 7640G + HD 8570M Dual costs 20% less ($10 savings) at current market prices. Performance per dollar (G3D Mark / price): 9.6 (Mobility Radeon HD 3870 X2) vs 11.9 (Radeon HD 7640G + HD 8570M Dual) — the Radeon HD 7640G + HD 8570M Dual offers 24% better value. The Radeon HD 7640G + HD 8570M Dual is the newer GPU (2013 vs 2008).
| Feature | Mobility Radeon HD 3870 X2 | Radeon HD 7640G + HD 8570M Dual |
|---|---|---|
| MSRP | $449 | $150-67% |
| Avg Price (30d) | $50 | $40-20% |
| Performance per Dollar | 9.6 | 11.9+24% |
| Codename | M88 | — |
| Release | September 1 2008 | August 1 2013 |
| Ranking | #919 | #881 |
Top Performing GPUs
The most powerful gpus ranked by G3D Mark benchmark scores.
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