AMD Radeon HD 6750M Mac Edition vs ATI Radeon HD 4850 X2
Graphics Processor
| GPU model | Whistler | R700 |
|---|---|---|
| GPU variant | Whistler PRO (216-0810005) | R700 PRO (215-0669065) |
| Architecture | TeraScale 2 | TeraScale |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 55 nm |
| Number of transistors | 716 million | 956 million |
| Die size | 104 mm² | 256 mm² |
Mobile graphics
| Release date | Apr 18th, 2011 | — |
|---|---|---|
| Generation | Vancouver (HD 6700M) | — |
| Production | End-of-life | — |
| Interface | MXM-A (3.0) | — |
| Predecessor | Manhattan | — |
| Successor | London | — |
Clocks
| GPU clock | 598 MHz | 625 MHz |
|---|---|---|
| Memory clock | 794 MHz 3.2 Gbps effective | 995 MHz 1990 Mbps effective |
Memory Configuration
| Memory size | 512 MB | 512 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR3 |
| Memory bus width | 128 bit | 256 bit |
| Bandwidth | 50.82 GB/s | 63.68 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 | 4.784 GPixel/s | 10.00 GPixel/s |
|---|---|---|
| Texture rate | 14.35 GTexel/s | 25.00 GTexel/s |
| FP32 (float) performance | 574.1 GFLOPS | 1,000 GFLOPS |
| FP64 (double) performance | — | 200.0 GFLOPS (1:5) |
Dimensions & Outputs
| Slot width | MXM Module | Dual-slot |
|---|---|---|
| TDP | 35 W | 250 W |
| Outputs | No outputs | 4x DVI1x S-Video |
| Length | — | 267 mm 10.5 inches |
| Suggested PSU | — | 600 W |
| Power connectors | — | 1x 6-pin + 1x 8-pin |
| Board number | — | B501 |
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
Graphics Card
| Release date | — | Nov 7th, 2008 |
|---|---|---|
| Generation | — | Radeon R700 |
| Production | — | End-of-life |
| Launch price | — | 420 USD |
| Interface | — | PCIe 2.0 x16 |
| Reviews | — | 26 in our database |
| Predecessor | — | Radeon R600 |
| Successor | — | Evergreen |
