Radeon HD 7640G vs Mobility Radeon HD 4670
Radeon HD 7640G
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Mobility Radeon HD 4670
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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 Radeon HD 7640G is positioned at rank 380 and the Mobility Radeon HD 4670 is on rank 418, so the Radeon HD 7640G offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Radeon HD 7640G
Performance Per Dollar Mobility Radeon HD 4670
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Mobility Radeon HD 4670 is the superior choice for raw performance. It leads with a 2% higher G3D Mark score and 100% more VRAM (1 GB vs 512 MB). This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon HD 7640G.
| Insight | Radeon HD 7640G | Mobility Radeon HD 4670 |
|---|---|---|
| Performance | ❌Lower raw frame rates (-2%) | ✅Leading raw performance (+2%) |
| Longevity | 🛑Obsolete Architecture (2012 / TeraScale 2 (2009−2015)) | 🛑Obsolete Architecture (2009 / TeraScale (2005−2013)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+100%) |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | — | — |
💎 Value Proposition
The Mobility Radeon HD 4670 offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the Mobility Radeon HD 4670 holds the technical lead. Priced at $20 (vs $50), it costs 60% less, resulting in a 155% higher cost efficiency score.
| Insight | Radeon HD 7640G | Mobility Radeon HD 4670 |
|---|---|---|
| Cost Efficiency | ❌Lower cost efficiency | ✅Better overall value (+155%) |
| Upfront Cost | ⚠️Higher upfront cost ($50) | ✅More affordable ($20) |
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 Radeon HD 7640G and Mobility Radeon HD 4670
Radeon HD 7640G
The Radeon HD 7640G is manufactured by AMD. It was released in January 5 2012. It features the TeraScale 2 architecture. The core clock speed is 600 MHz. It has 480 shading units. The thermal design power (TDP) is 45W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 454 points.
Mobility Radeon HD 4670
The Mobility Radeon HD 4670 is manufactured by AMD. It was released in January 9 2009. It features the TeraScale architecture. The core clock speed is 550 MHz. It has 800 shading units. The thermal design power (TDP) is 30W. Manufactured using 55 nm process technology. G3D Mark benchmark score: 463 points.
Graphics Performance
The Radeon HD 7640G scores 454 and the Mobility Radeon HD 4670 reaches 463 in the G3D Mark benchmark — just a 2% difference, making them near-identical in rasterization performance. The Radeon HD 7640G is built on TeraScale 2 while the Mobility Radeon HD 4670 uses TeraScale, both on 40 nm vs 55 nm. Shader units: 480 (Radeon HD 7640G) vs 800 (Mobility Radeon HD 4670). Raw compute: 0.576 TFLOPS (Radeon HD 7640G) vs 0.88 TFLOPS (Mobility Radeon HD 4670).
| Feature | Radeon HD 7640G | Mobility Radeon HD 4670 |
|---|---|---|
| G3D Mark Score | 454 | 463+2% |
| Architecture | TeraScale 2 | TeraScale |
| Process Node | 40 nm | 55 nm |
| Shading Units | 480 | 800+67% |
| Compute (TFLOPS) | 0.576 TFLOPS | 0.88 TFLOPS+53% |
| ROPs | 8 | 16+100% |
| TMUs | 24 | 40+67% |
| L1 Cache | 48 KB | 160 KB+233% |
| L2 Cache | 256 KB | 256 KB |
Advanced Features (DLSS/FSR)
| Feature | Radeon HD 7640G | Mobility Radeon HD 4670 |
|---|---|---|
| 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 Radeon HD 7640G comes with 512 MB of VRAM, while the Mobility Radeon HD 4670 has 1 GB. The Mobility Radeon HD 4670 offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 64-bit.
| Feature | Radeon HD 7640G | Mobility Radeon HD 4670 |
|---|---|---|
| VRAM Capacity | 0.5 GB | 1 GB+100% |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 128-bit+100% | 64-bit |
| L2 Cache | 256 KB | 256 KB |
Display & API Support
DirectX support: 11 (11_0) (Radeon HD 7640G) vs 10.1 (Mobility Radeon HD 4670). OpenGL: 4.4 vs 3.3. Maximum simultaneous displays: 2 vs 2.
| Feature | Radeon HD 7640G | Mobility Radeon HD 4670 |
|---|---|---|
| DirectX | 11 (11_0)+9% | 10.1 |
| OpenGL | 4.4+33% | 3.3 |
| Max Displays | 2 | 2 |
Media & Encoding
Hardware encoder: VCE 1.0 (Radeon HD 7640G) vs None (Mobility Radeon HD 4670). Decoder: UVD 3.2 vs UVD 2.2. Supported codecs: H.264,VC-1,MPEG-2,DivX (Radeon HD 7640G) vs MPEG-2,H.264,VC-1 (Mobility Radeon HD 4670).
| Feature | Radeon HD 7640G | Mobility Radeon HD 4670 |
|---|---|---|
| Encoder | VCE 1.0 | None |
| Decoder | UVD 3.2 | UVD 2.2 |
| Codecs | H.264,VC-1,MPEG-2,DivX | MPEG-2,H.264,VC-1 |
Power & Dimensions
The Radeon HD 7640G draws 45W versus the Mobility Radeon HD 4670's 30W — a 40% difference. The Mobility Radeon HD 4670 is more power-efficient. Recommended PSU: 350W (Radeon HD 7640G) vs 350W (Mobility Radeon HD 4670). Power connectors: 1x 6-pin vs PCIe-powered. Typical load temperature: 70°C vs 70.
| Feature | Radeon HD 7640G | Mobility Radeon HD 4670 |
|---|---|---|
| TDP | 45W | 30W-33% |
| Recommended PSU | 350W | 350W |
| Power Connector | 1x 6-pin | PCIe-powered |
| Length | — | 0mm |
| Height | — | 0mm |
| Slots | 0 | 0 |
| Temp (Load) | 70°C | 70 |
| Perf/Watt | 10.1 | 15.4+52% |
Value Analysis
The Radeon HD 7640G launched at $50 MSRP and currently averages $50, while the Mobility Radeon HD 4670 launched at $67 and now averages $20. The Mobility Radeon HD 4670 costs 60% less ($30 savings) at current market prices. Performance per dollar (G3D Mark / price): 9.1 (Radeon HD 7640G) vs 23.1 (Mobility Radeon HD 4670) — the Mobility Radeon HD 4670 offers 153.8% better value. The Radeon HD 7640G is the newer GPU (2012 vs 2009).
| Feature | Radeon HD 7640G | Mobility Radeon HD 4670 |
|---|---|---|
| MSRP | $50-25% | $67 |
| Avg Price (30d) | $50 | $20-60% |
| Performance per Dollar | 9.1 | 23.1+154% |
| Codename | Turks | M98 |
| Release | January 5 2012 | January 9 2009 |
| Ranking | #870 | #927 |
Top Performing GPUs
The most powerful gpus ranked by G3D Mark benchmark scores.
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