AMD (ATI) Radeon HD 4830 Review Part1:
Introduction & Specifications
Introduction & Specifications
Just-another-card from AMD to cover the price point vacuum between Radeon HD 4670 & HD 4850, as well as to battle with Nvidia's Geforce 9800 GT. This card is based on the RV770LE core, which has 1 cluster of shader processors (usually defective) disabled, bringing the magic number to 640. Where the fully functional RV770 (HD4850/4870) have all the 800.
An interesting to note, AMD confirmed that disabling the cluster is a hardware-cut, so chances are it is impossible for anyone to "revive" the card with a modded BIOS. Let aside the controversy surrounding its "missing shaders", let's take a look at this extracted review:
| Graphics cards | HD 4830 512MB (RV770LE) | HD 4850 512MB (RV770) | HD 3870 512MB (RV670) | 9800 GT 512MB (G92) |
|---|---|---|---|---|
| Core clock | 575MHz | 625MHz | 775MHz | 600MHz |
| Shader clock | 575MHz | 625MHz | 775MHz | 1,500MHz |
| Memory clock | 1,800MHz | 2,000MHz | 2,250MHz | 1,800MHz |
| Bus width, size, type | 256-bit, 512MB, GDDR3 | 256-bit, 512MB, GDDR4 | 256-bit, 512MB, GDDR3 | |
| Memory bandwidth | 57.6GB/s | 64GB/s | 72.8GB/s | 57.6GB/s |
| Process | 55nm | 65nm/55nm | ||
| Transistor count | 956mil | 956mil | 666mil | 754mil |
| Die size | 260mm² | 260mm² | 192mm² | 296mm²/230mm² |
| Peak GFLOPS | 736 | 1,000 | 496 | 504 |
| ROPs | 12 | 16 | 16 | 16 |
| TDP | 110W | 110W | 105W | 105W |
Part1: Introduction & Specifications
Part2: Test System, 3Dmark06 & Vantage
Part3: CoD4, Assassin's Creed, HL2:EP2
Part4: CoH, WIC, FEAR, UT3
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