ATI Mobility Radeon HD 4850 Mac Edition vs ATI Radeon HD 4850
Graphics Processor
| GPU model | M98 | RV770 |
|---|---|---|
| Architecture | TeraScale | TeraScale |
| Foundry | TSMC | TSMC |
| Manufacturing process | 55 nm | 55 nm |
| Number of transistors | 956 million | 956 million |
| Die size | 256 mm² | 256 mm² |
| GPU variant | — | RV770 PRO (215-0669065) |
Mobile graphics
| Release date | Aug 28th, 2009 | — |
|---|---|---|
| Generation | M9x (Mobility HD 4800) | — |
| Production | End-of-life | — |
| Interface | PCIe 2.0 x16 | — |
| Reviews | 2 in our database | — |
| Predecessor | M8x | — |
| Successor | Manhattan | — |
Clocks
| GPU clock | 503 MHz | 625 MHz |
|---|---|---|
| Memory clock | 850 MHz 1700 Mbps effective | 993 MHz 1986 Mbps effective |
Memory Configuration
| Memory size | 512 MB | 512 MB |
|---|---|---|
| Memory type | GDDR3 | GDDR3 |
| Memory bus width | 256 bit | 256 bit |
| Bandwidth | 54.40 GB/s | 63.55 GB/s |
Render Configuration
| Shading units | 800 | 800 |
|---|---|---|
| TMUs | 40 | 40 |
| ROPs | 16 | 16 |
| Compute units | 10 | 10 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 256 KB | 256 KB |
Performance
| Pixel rate | 8.048 GPixel/s | 10.00 GPixel/s |
|---|---|---|
| Texture rate | 20.12 GTexel/s | 25.00 GTexel/s |
| FP32 (float) performance | 804.8 GFLOPS | 1,000 GFLOPS |
| FP64 (double) performance | 161.0 GFLOPS (1:5) | 200.0 GFLOPS (1:5) |
Dimensions & Outputs
| TDP | unknown | 110 W |
|---|---|---|
| Outputs | No outputs | 2x DVI1x S-Video |
| Slot width | — | Single-slot |
| Length | — | 246 mm 9.7 inches |
| Suggested PSU | — | 300 W |
| Power connectors | — | 1x 6-pin |
| Board number | — | B501-31 |
API Support & Features
| DirectX | 10.1 (10_1) | 10.1 (10_1) |
|---|---|---|
| OpenGL | 3.3 | 3.3 |
| OpenCL | 1.1 | 1.1 |
| Vulkan | — | — |
| Shader model | 4.1 | 4.1 |
Other Features
Graphics Card
| Release date | — | Jun 25th, 2008 |
|---|---|---|
| Generation | — | Radeon R700 |
| Production | — | End-of-life |
| Launch price | — | 199 USD |
| Interface | — | PCIe 2.0 x16 |
| Reviews | — | 127 in our database |
| Predecessor | — | Radeon R600 |
| Successor | — | Evergreen |
