AMD Radeon HD 7670 OEM vs ATI Mobility Radeon HD 4870
Graphics Processor
| GPU model | Turks | M98 |
|---|---|---|
| GPU variant | Turks XT (215-0803000) | M98 XT (216-0732023) |
| Architecture | TeraScale 2 | TeraScale |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 55 nm |
| Number of transistors | 716 million | 956 million |
| Die size | 118 mm² | 256 mm² |
Graphics Card
| Release date | Jan 5th, 2012 | — |
|---|---|---|
| Generation | Southern Islands | — |
| Production | End-of-life | — |
| Interface | PCIe 2.0 x16 | — |
| Predecessor | Northern Islands | — |
| Successor | Sea Islands | — |
Clocks
| GPU clock | 800 MHz | 550 MHz |
|---|---|---|
| Memory clock | 1000 MHz 4 Gbps effective | 888 MHz 1776 Mbps effective |
Memory Configuration
| Memory size | 512 MB | 512 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR3 |
| Memory bus width | 128 bit | 256 bit |
| Bandwidth | 64.00 GB/s | 56.83 GB/s |
Render Configuration
| Shading units | 480 | 800 |
|---|---|---|
| TMUs | 24 | 40 |
| ROPs | 8 | 16 |
| Compute units | 6 | 10 |
| Cache L1 | 8 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 256 KB | 256 KB |
Performance
| Pixel rate | 6.400 GPixel/s | 8.800 GPixel/s |
|---|---|---|
| Texture rate | 19.20 GTexel/s | 22.00 GTexel/s |
| FP32 (float) performance | 768.0 GFLOPS | 880.0 GFLOPS |
| FP64 (double) performance | — | 176.0 GFLOPS (1:5) |
Dimensions & Outputs
| Slot width | Single-slot | — |
|---|---|---|
| Length | 145 mm 5.7 inches | — |
| TDP | 66 W | unknown |
| Suggested PSU | 250 W | — |
| Outputs | 1x DVI1x DisplayPort1x VGA | No outputs |
| Power connectors | None | — |
| Board number | C243, C331, C337 | — |
API Support & Features
| DirectX | 11.2 (11_0) | 10.1 (10_1) |
|---|---|---|
| OpenGL | 4.4 | 3.3 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | — | — |
| Shader model | 5.0 | 4.1 |
Other Features
Mobile graphics
| Release date | — | Jan 9th, 2009 |
|---|---|---|
| Generation | — | M9x (Mobility HD 4800) |
| Production | — | End-of-life |
| Interface | — | PCIe 2.0 x16 |
| Reviews | — | 2 in our database |
| Predecessor | — | M8x |
| Successor | — | Manhattan |
