GeForce GT 420M
Radeon HD 4670
GeForce GT 420M vs Radeon HD 4670 Performance Spectrum
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.
GeForce GT 420M vs Radeon HD 4670 FPS Benchmarks
Predicted gaming performance across popular games. Tested paired with Ryzen 7 9800X3D to isolate GPU performance.
Search any supported game below to compare 1080p FPS for both components.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Among Us
Apex Legends
ARC Raiders
Baldur's Gate 3
Call of Duty: Black Ops 6
GeForce GT 420M vs Radeon HD 4670: Pros, Cons & Final Verdict
See where each GPU makes more sense in practice: raw FPS, VRAM, features, power draw, pricing, and long-term headroom.
GeForce GT 420M
2012Why buy it
- ✅Draws 32W instead of 250W, a 218W reduction.
- ✅More future proof: Kepler (2012−2018) on 28nm with a newer platform for upcoming games.
Trade-offs
- ❌Lower average FPS than Radeon HD 4670 across 50 tracked games in our benchmark data.
- ❌Less VRAM, with 512 MB vs 1 GB for high-resolution textures and newer games.
- ❌2012 hardware with 512 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
- ❌Lower G3D Mark per dollar, at 0 vs 5.7 G3D/$ (Unknown MSRP vs $67 MSRP).
Radeon HD 4670
2010Why buy it
- ✅61.2% more average FPS across 50 tracked games in our benchmark data.
- ✅Delivers 100+% more G3D Mark for each dollar spent, at 5.7 vs 0 G3D/$ ($67 MSRP vs Unknown MSRP).
- ✅100% more VRAM for high-resolution textures and newer games (1 GB vs 512 MB).
Trade-offs
- ❌2010 hardware with 1 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
- ❌681.3% higher power demand at 250W vs 32W.
Quick Answers
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GeForce GT 420M vs Radeon HD 4670 Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
GeForce GT 420M
The GeForce GT 420M 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: 392 points.
Radeon HD 4670
The Radeon HD 4670 is manufactured by AMD. It was released in December 14 2010. It features the TeraScale 3 architecture. The boost clock speed is 880 MHz. It has 1536 shading units. The thermal design power (TDP) is 250W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 382 points. Launch price was $369.
Graphics Performance
The GeForce GT 420M scores 392 and the Radeon HD 4670 reaches 382 in the G3D Mark benchmark — just a 2.6% difference, making them near-identical in rasterization performance. The GeForce GT 420M is built on Kepler while the Radeon HD 4670 uses TeraScale 3, both on 28 nm vs 40 nm. Shader units: 384 (GeForce GT 420M) vs 1,536 (Radeon HD 4670). Raw compute: 0.48 TFLOPS (GeForce GT 420M) vs 2.703 TFLOPS (Radeon HD 4670). Boost clocks: 645 MHz vs 880 MHz.
| Feature | GeForce GT 420M | Radeon HD 4670 |
|---|---|---|
| G3D Mark Score | 392+3% | 382 |
| Architecture | Kepler | TeraScale 3 |
| Process Node | 28 nm | 40 nm |
| Shading Units | 384 | 1536+300% |
| Compute (TFLOPS) | 0.48 TFLOPS | 2.703 TFLOPS+463% |
| Boost Clock | 645 MHz | 880 MHz+36% |
| ROPs | 16 | 32+100% |
| TMUs | 32 | 96+200% |
| L1 Cache | 32 KB | 192 KB+500% |
| L2 Cache | 256 KB | 512 KB+100% |
Advanced Features (DLSS/FSR)
The GeForce GT 420M gets NVIDIA DLSS, which still tends to look cleaner in motion. The Radeon HD 4670 leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.
| Feature | GeForce GT 420M | Radeon HD 4670 |
|---|---|---|
| Upscaling Tech | Upscaling support | FSR Upscaling / FSR 4 |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | NVIDIA Reflex | AMD Anti-Lag |
Video Memory (VRAM)
The GeForce GT 420M has 512 MB of VRAM, while the Radeon HD 4670 carries 1 GB. Radeon HD 4670 gives you 100% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bus width is 128-bit on the GeForce GT 420M and 128-bit on the Radeon HD 4670. L2 Cache: 256 KB (GeForce GT 420M) vs 512 KB (Radeon HD 4670) — the Radeon HD 4670 has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce GT 420M | Radeon HD 4670 |
|---|---|---|
| VRAM Capacity | 0.5 GB | 1 GB+100% |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 128-bit | 128-bit |
| L2 Cache | 256 KB | 512 KB+100% |
Display & API Support
DirectX support: 11.0 (GeForce GT 420M) vs 10.1 (Radeon HD 4670). OpenGL: 4.0 vs 3.3. Maximum simultaneous displays: 1 vs 3.
| Feature | GeForce GT 420M | Radeon HD 4670 |
|---|---|---|
| DirectX | 11.0+9% | 10.1 |
| OpenGL | 4.0+21% | 3.3 |
| Max Displays | 1 | 3+200% |
Media & Encoding
Decoder: PureVideo HD VP4 vs UVD 2.2. Supported codecs: MPEG-2,H.264,VC-1,MPEG-4 ASP (GeForce GT 420M) vs H.264,VC-1,MPEG-2,DivX (Radeon HD 4670).
| Feature | GeForce GT 420M | Radeon HD 4670 |
|---|---|---|
| Encoder | No | — |
| Decoder | PureVideo HD VP4 | 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 420M draws 32W versus the Radeon HD 4670's 250W — a 154.6% difference. The GeForce GT 420M is more power-efficient. Recommended PSU: 350W (GeForce GT 420M) vs 300W (Radeon HD 4670). Power connectors: PCIe-powered vs None. Card length: 0mm vs 193mm, occupying 0 vs 1 slots. Typical load temperature: 75°C vs 65°C.
| Feature | GeForce GT 420M | Radeon HD 4670 |
|---|---|---|
| TDP | 32W-87% | 250W |
| Recommended PSU | 350W | 300W-14% |
| Power Connector | PCIe-powered | None |
| Length | 0mm | 193mm |
| Height | 0mm | — |
| Slots | 0-100% | 1 |
| Temp (Load) | 75°C | 65°C-13% |
| Perf/Watt | 12.3+720% | 1.5 |
Value Analysis
The newer card here is GeForce GT 420M (2012 vs 2010).
| Feature | GeForce GT 420M | Radeon HD 4670 |
|---|---|---|
| MSRP | — | $67 |
| Codename | GK107 | Cayman |
| Release | March 22 2012 | December 14 2010 |
| Ranking | #909 | #596 |
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