Radeon HD 8490 vs Radeon HD 7400G
Radeon HD 8490
Popular choices:
Radeon HD 7400G
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 Radeon HD 8490 is positioned at rank 294 and the Radeon HD 7400G is on rank 219, so the Radeon HD 7400G 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 8490
Performance Per Dollar Radeon HD 7400G
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
⚠️ Generational Difference
The Radeon HD 7400G is significantly newer (2025 vs 2009). The Radeon HD 7400G likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The Radeon HD 8490 lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The Radeon HD 7400G is the superior choice for raw performance. It leads with a 1.5% higher G3D Mark score. However, the Radeon HD 8490 offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | Radeon HD 8490 | Radeon HD 7400G |
|---|---|---|
| Performance | ❌Lower raw frame rates (-1.5%) | ✅Leading raw performance (+1.5%) |
| Longevity | 🛑Obsolete Architecture (2009 / TeraScale (2005−2013)) | RDNA 3.0 (2022−2026) (6nm) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+100%) | ❌ Less VRAM capacity |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | 📏 Compact / SFF Friendly | — |
💎 Value Proposition
The Radeon HD 7400G offers a compelling cost-to-performance ratio. Priced at $15 versus $35 for the Radeon HD 8490, it costs 57% less. While it maintains basic entry-level capabilities, this results in a 136.9% higher cost efficiency score.
| Insight | Radeon HD 8490 | Radeon HD 7400G |
|---|---|---|
| Cost Efficiency | ❌Lower cost efficiency | ✅Better overall value (+136.9%) |
| Upfront Cost | ⚠️Higher upfront cost ($35) | ✅More affordable ($15) |
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 8490 and Radeon HD 7400G
Radeon HD 8490
The Radeon HD 8490 is manufactured by AMD. It was released in April 2 2009. It features the TeraScale architecture. The core clock speed is 850 MHz. It has 800 shading units. The thermal design power (TDP) is 190W. Manufactured using 55 nm process technology. G3D Mark benchmark score: 263 points. Launch price was $249.
Radeon HD 7400G
The Radeon HD 7400G is manufactured by AMD. It was released in August 8 2025. It features the RDNA 3.0 architecture. The core clock ranges from 1452 MHz to 2300 MHz. It has 1792 shading units. The thermal design power (TDP) is 43W. Manufactured using 6 nm process technology. It features 28 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 267 points.
Graphics Performance
The Radeon HD 8490 scores 263 and the Radeon HD 7400G reaches 267 in the G3D Mark benchmark — just a 1.5% difference, making them near-identical in rasterization performance. The Radeon HD 8490 is built on TeraScale while the Radeon HD 7400G uses RDNA 3.0, both on 55 nm vs 6 nm. Shader units: 800 (Radeon HD 8490) vs 1,792 (Radeon HD 7400G). Raw compute: 1.36 TFLOPS (Radeon HD 8490) vs 16.49 TFLOPS (Radeon HD 7400G).
| Feature | Radeon HD 8490 | Radeon HD 7400G |
|---|---|---|
| G3D Mark Score | 263 | 267+2% |
| Architecture | TeraScale | RDNA 3.0 |
| Process Node | 55 nm | 6 nm |
| Shading Units | 800 | 1792+124% |
| Compute (TFLOPS) | 1.36 TFLOPS | 16.49 TFLOPS+1112% |
| ROPs | 16 | 64+300% |
| TMUs | 40 | 112+180% |
| L1 Cache | 160 KB | 512 KB+220% |
| L2 Cache | 0.25 MB | 2 MB+700% |
Advanced Features (DLSS/FSR)
| Feature | Radeon HD 8490 | Radeon HD 7400G |
|---|---|---|
| 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 8490 comes with 1 GB of VRAM, while the Radeon HD 7400G has 512 MB. The Radeon HD 8490 offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 64-bit vs 128-bit. L2 Cache: 0.25 MB (Radeon HD 8490) vs 2 MB (Radeon HD 7400G) — the Radeon HD 7400G has significantly larger on-die cache to reduce VRAM reliance.
| Feature | Radeon HD 8490 | Radeon HD 7400G |
|---|---|---|
| VRAM Capacity | 1 GB+100% | 0.5 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 64-bit | 128-bit+100% |
| L2 Cache | 0.25 MB | 2 MB+700% |
Display & API Support
DirectX support: 11.2 (Radeon HD 8490) vs 11.2 (11_0) (Radeon HD 7400G). OpenGL: 4.4 vs 4.4. Maximum simultaneous displays: 2 vs 2.
| Feature | Radeon HD 8490 | Radeon HD 7400G |
|---|---|---|
| DirectX | 11.2 | 11.2 (11_0) |
| OpenGL | 4.4 | 4.4 |
| Max Displays | 2 | 2 |
Media & Encoding
Hardware encoder: UVD 3.1 (Radeon HD 8490) vs None (Radeon HD 7400G). Decoder: UVD 3.1 vs UVD 3.0. Supported codecs: H.264,MPEG-2,VC-1 (Radeon HD 8490) vs H.264,VC-1,MPEG-2,MPEG-4,MVC (Radeon HD 7400G).
| Feature | Radeon HD 8490 | Radeon HD 7400G |
|---|---|---|
| Encoder | UVD 3.1 | None |
| Decoder | UVD 3.1 | UVD 3.0 |
| Codecs | H.264,MPEG-2,VC-1 | H.264,VC-1,MPEG-2,MPEG-4,MVC |
Power & Dimensions
The Radeon HD 8490 draws 190W versus the Radeon HD 7400G's 43W — a 126.2% difference. The Radeon HD 7400G is more power-efficient. Recommended PSU: 350W (Radeon HD 8490) vs 350W (Radeon HD 7400G). Power connectors: 1x 6-pin vs 1x 6-pin. Card length: 168mm vs 0mm, occupying 1 vs 0 slots.
| Feature | Radeon HD 8490 | Radeon HD 7400G |
|---|---|---|
| TDP | 190W | 43W-77% |
| Recommended PSU | 350W | 350W |
| Power Connector | 1x 6-pin | 1x 6-pin |
| Length | 168mm | 0mm |
| Height | — | 0mm |
| Slots | 1 | 0-100% |
| Temp (Load) | — | 75 |
| Perf/Watt | 1.4 | 6.2+343% |
Value Analysis
The Radeon HD 8490 launched at $99 MSRP and currently averages $35, while the Radeon HD 7400G launched at $50 and now averages $15. The Radeon HD 7400G costs 57.1% less ($20 savings) at current market prices. Performance per dollar (G3D Mark / price): 7.5 (Radeon HD 8490) vs 17.8 (Radeon HD 7400G) — the Radeon HD 7400G offers 137.3% better value. The Radeon HD 7400G is the newer GPU (2025 vs 2009).
| Feature | Radeon HD 8490 | Radeon HD 7400G |
|---|---|---|
| MSRP | $99 | $50-49% |
| Avg Price (30d) | $35 | $15-57% |
| Performance per Dollar | 7.5 | 17.8+137% |
| Codename | RV790 | Navi 33 |
| Release | April 2 2009 | August 8 2025 |
| Ranking | #762 | #229 |
Top Performing GPUs
The most powerful gpus ranked by G3D Mark benchmark scores.
You May Also Compare
Similar GPU comparisons based on Radeon HD 8490 and Radeon HD 7400G
