
Radeon HD4850
| Radeon GPU Comparison | |||
| Radeon HD 4870 512MB | Radeon HD 4850 512MB | Radeon HD 3870 512MB | |
| Transistors | 965 Million | 965 Million | 666 Million |
| Manufacturing Process | 55-nm | 55-nm | 55-nm |
| Stream Processors | 800 | 800 | 320 |
| Texture Units | 40 | 40 | 16 |
| ROPs | 16 | 16 | 16 |
| Core Clock Speed | 750MHz | 625MHz | 775MHz |
| Memory Clock Speed | 3.6GHz Effective GDDR5 | 2.0GHz Effective GDDR3 | 2.25GHz Effective GDDR4 |
| Math Processing Rate | 1.2 Teraflops | 1.0 Teraflops | 0.497 Terflops |
| DirectX Support | 10.1 | 10.1 | 10.1 |
| Tessellation Unit | Yes | Yes | Yes |
| UVD | Yes | Yes | Yes |
| PowerPlay | Yes | Yes | Yes |
| MSRP | $299 | $199 | |
















REVIEWS
- Visiontek Radeon HD 4850 preview at AMD Zone
- ATI Radeon HD 4850 preview at Anandtech
- ATI Radeon HD 4850 preview at ExtremeTech
- ATI Radeon HD 4850 and GeForce 9800 GTX+ preview at Firing Squad
- ATI Radeon HD 4850 review at Guru 3D
- ATI Radeon HD 4850 CrossFire performance preview at Hardware Zone
- Sapphire Radeon HD 4850 preview at HEXUS
- ATI Radeon HD 4850 sneak preview at Hot Hardware
- Sapphire Radeon HD 4850 preview at Legit Reviews
- PowerColor Radeon HD 4850 CrossFire review at OCworkbench
- AMD Radeon HD 4850 review at PC Games Hardware
- MSI Radeon HD 4850 preview at PC Perspective
- Radeon HD 4850 preview at The Tech Report
- MSI R4850 Radeon HD 4850 512MB review at techPowerUp
- PowerColor Radeon HD 4850 512MB review at techPowerUp
- Sapphire Radeon HD 4850 in CrossFire review at Tweak Town
- Radeon HD 4850 in CrossFire at 4GHz review at Tweak Town
HD4850 LEDs
D1601 – Over temp protection enabled
D1602 – EXT 12V fault
HD4870 LEDs
D1601 – Red LED On, shows critical temperature fault
D1602 – Red LED On, shows External power connector A was removed
D1603 – Red LED On, shows External power connector B was removed
D601 – Red LED On, shows critical Core power fault


