AMD Radeon R7 450 OEM vs ATI Radeon HD 4870 Mac Edition
What is the difference between AMD Radeon R7 450 OEM and ATI Radeon HD 4870 Mac Edition. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Cape Verde | GPU Name | RV770 |
| Cape Verde PRX | Model number | RV770 XT Mac (215-0669080) |
| GCN 1.0 | Architecture | TeraScale |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 55 nm |
| 1,500 million | Transistors | 956 million |
| 123 mm² | Die Size | 256 mm² |
Graphics Card
| Jun 30th, 2016 | Release Date | Jan 6th, 2009 |
| Arctic Islands (R7 400) | Family | Radeon R700 (HD 4800) |
| Active | Production | End-of-life |
| Pirate Islands | Predecessor | Radeon R600 |
| PCIe 3.0 x16 | Bus Interface | PCIe 2.0 x16 |
Memory
| 2 GB | Memory Size | 512 MB |
| GDDR5 | Memory Type | GDDR5 |
| 128 bit | Memory Bus | 256 bit |
| 72.00 GB/s | Bandwidth | 108.8 GB/s |
Performance
| 14.80 GPixel/s | Pixel fillrate | 12.00 GPixel/s |
| 29.60 GTexel/s | Texture fillrate | 30.00 GTexel/s |
| 947.2 GFLOPS | FP32 (float) performance | 1,200 GFLOPS |
| 59.20 GFLOPS (1:16) | FP64 (double) performance | 240.0 GFLOPS (1:5) |
Clock Speeds
| 1125 MHz 4.5 Gbps effective | Memory Clock | 850 MHz 3.4 Gbps effective |
| 925 MHz | GPU Clock | 750 MHz |
Render Config
| 512 | Shading Units | 800 |
| 32 | TMUs | 40 |
| 16 | ROPs | 16 |
| 8 | Compute Units | 10 |
| 16 KB (per CU) | L1 Cache | 16 KB (per CU) |
| 256 KB | L2 Cache | 256 KB |
Board Design
| Dual-slot | Slot Width | Dual-slot |
| 65 W | Thermal design power (TDP) | 150 W |
| 250 W | Suggested PSU | 450 W |
| No outputs | Display Connectors | 1x DVI 1x mini-DisplayPort |
| 1x 6-pin | Power Connectors | 2x 6-pin |
| C750 C906 | Board Number | B771 |
API support
| 12 (11_1) | DirectX | 10.1 (10_1) |
| 4.6 | OpenGL | 3.3 |
| 1.2 | OpenCL | 1.1 |
| 1.2 | Vulkan | N/A |
| 5.1 | Shader Model | 4.1 |