GeForce GT 640M vs Radeon HD 4770
GeForce GT 640M
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Radeon HD 4770
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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 640M is positioned at rank 224 and the Radeon HD 4770 is on rank 149, so the Radeon HD 4770 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 640M
Performance Per Dollar Radeon HD 4770
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Radeon HD 4770 is the superior choice for raw performance. It leads with a 0.2% higher G3D Mark score. However, the GeForce GT 640M offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | GeForce GT 640M | Radeon HD 4770 |
|---|---|---|
| Performance | ❌Lower raw frame rates (-0.2%) | ✅Leading raw performance (+0.2%) |
| Longevity | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) | 🛑Obsolete Architecture (2009 / TeraScale (2005−2013)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+300%) | ❌ Less VRAM capacity |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | — | 📏 Compact / SFF Friendly |
💎 Value Proposition
The GeForce GT 640M offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the GeForce GT 640M holds the technical lead. Priced at $50 (vs $109), it costs 54% less, resulting in a 117.5% higher cost efficiency score.
| Insight | GeForce GT 640M | Radeon HD 4770 |
|---|---|---|
| Cost Efficiency | ✅Better overall value (+117.5%) | ❌Lower cost efficiency |
| Upfront Cost | ✅More affordable ($50) | ⚠️Higher upfront cost ($109) |
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 640M and Radeon HD 4770
GeForce GT 640M
The GeForce GT 640M is manufactured by NVIDIA. It was released in March 22 2012. It features the Kepler architecture. The core clock ranges from Up to 625 MHz to 645 MHz. It has 384 shading units. The thermal design power (TDP) is 32W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 907 points.
Radeon HD 4770
The Radeon HD 4770 is manufactured by AMD. It was released in April 28 2009. It features the TeraScale architecture. The core clock speed is 750 MHz. It has 640 shading units. The thermal design power (TDP) is 80W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 909 points. Launch price was $109.
Graphics Performance
The GeForce GT 640M scores 907 and the Radeon HD 4770 reaches 909 in the G3D Mark benchmark — just a 0.2% difference, making them near-identical in rasterization performance. The GeForce GT 640M is built on Kepler while the Radeon HD 4770 uses TeraScale, both on 28 nm vs 40 nm. Shader units: 384 (GeForce GT 640M) vs 640 (Radeon HD 4770). Raw compute: 0.48 TFLOPS (GeForce GT 640M) vs 0.96 TFLOPS (Radeon HD 4770).
| Feature | GeForce GT 640M | Radeon HD 4770 |
|---|---|---|
| G3D Mark Score | 907 | 909 |
| Architecture | Kepler | TeraScale |
| Process Node | 28 nm | 40 nm |
| Shading Units | 384 | 640+67% |
| Compute (TFLOPS) | 0.48 TFLOPS | 0.96 TFLOPS+100% |
| ROPs | 16 | 16 |
| TMUs | 32 | 32 |
| L1 Cache | 32 KB | 128 KB+300% |
| L2 Cache | 256 KB+100% | 128 KB |
Advanced Features (DLSS/FSR)
| Feature | GeForce GT 640M | Radeon HD 4770 |
|---|---|---|
| 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 640M comes with 2 GB of VRAM, while the Radeon HD 4770 has 512 MB. The GeForce GT 640M offers 300% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 64-bit. L2 Cache: 256 KB (GeForce GT 640M) vs 128 KB (Radeon HD 4770) — the GeForce GT 640M has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce GT 640M | Radeon HD 4770 |
|---|---|---|
| VRAM Capacity | 2 GB+300% | 0.5 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 128-bit+100% | 64-bit |
| L2 Cache | 256 KB+100% | 128 KB |
Display & API Support
DirectX support: 11.0 (GeForce GT 640M) vs 10.1 (Radeon HD 4770). OpenGL: 4.5 vs 3.3. Maximum simultaneous displays: 1 vs 3.
| Feature | GeForce GT 640M | Radeon HD 4770 |
|---|---|---|
| DirectX | 11.0+9% | 10.1 |
| OpenGL | 4.5+36% | 3.3 |
| Max Displays | 1 | 3+200% |
Media & Encoding
Decoder: PureVideo HD VP5 vs UVD 2.2. Supported codecs: MPEG-2,H.264,VC-1,MPEG-4 ASP (GeForce GT 640M) vs H.264,VC-1,MPEG-2,DivX (Radeon HD 4770).
| Feature | GeForce GT 640M | Radeon HD 4770 |
|---|---|---|
| Encoder | NVENC 1.0 | — |
| Decoder | PureVideo HD VP5 | UVD 2.2 |
| Codecs | MPEG-2,H.264,VC-1,MPEG-4 ASP | H.264,VC-1,MPEG-2,DivX |
Power & Dimensions
The GeForce GT 640M draws 32W versus the Radeon HD 4770's 80W — a 85.7% difference. The GeForce GT 640M is more power-efficient. Recommended PSU: 350W (GeForce GT 640M) vs 400W (Radeon HD 4770). Power connectors: PCIe-powered vs 1x 6-pin. Card length: 0mm vs 203mm, occupying 0 vs 2 slots. Typical load temperature: 70°C vs 72°C.
| Feature | GeForce GT 640M | Radeon HD 4770 |
|---|---|---|
| TDP | 32W-60% | 80W |
| Recommended PSU | 350W-13% | 400W |
| Power Connector | PCIe-powered | 1x 6-pin |
| Length | 0mm | 203mm |
| Height | 0mm | — |
| Slots | 0-100% | 2 |
| Temp (Load) | 70°C-3% | 72°C |
| Perf/Watt | 28.3+148% | 11.4 |
Value Analysis
The GeForce GT 640M costs 54.1% less ($59 savings) at current market prices. Performance per dollar (G3D Mark / price): 18.1 (GeForce GT 640M) vs 8.3 (Radeon HD 4770) — the GeForce GT 640M offers 118.1% better value. The GeForce GT 640M is the newer GPU (2012 vs 2009).
| Feature | GeForce GT 640M | Radeon HD 4770 |
|---|---|---|
| MSRP | — | $109 |
| Avg Price (30d) | $50-54% | $109 |
| Performance per Dollar | 18.1+118% | 8.3 |
| Codename | GK107 | RV740 |
| Release | March 22 2012 | April 28 2009 |
| Ranking | #909 | #908 |
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