AMD Radeon HD 6770M vs AMD Radeon HD 8770 OEM
Graphics Processor
| GPU model | Whistler | Bonaire |
|---|---|---|
| GPU variant | Whistler XT (216-0810001) | Bonaire XT (215-0839039) |
| Architecture | TeraScale 2 | GCN 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 28 nm |
| Number of transistors | 716 million | 2,080 million |
| Die size | 104 mm² | 160 mm² |
Mobile graphics
| Release date | Jan 4th, 2011 | — |
|---|---|---|
| Generation | Vancouver (HD 6700M) | — |
| Production | End-of-life | — |
| Interface | MXM-A (3.0) | — |
| Predecessor | Manhattan | — |
| Successor | London | — |
Clocks
| GPU clock | 725 MHz | 1050 MHz |
|---|---|---|
| Memory clock | 900 MHz 3.6 Gbps effective | 1500 MHz 6 Gbps effective |
Memory Configuration
| Memory size | 1024 MB | 1024 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 128 bit | 128 bit |
| Bandwidth | 57.60 GB/s | 96.00 GB/s |
Render Configuration
| Shading units | 480 | 896 |
|---|---|---|
| TMUs | 24 | 56 |
| ROPs | 8 | 16 |
| Compute units | 6 | 14 |
| Cache L1 | 8 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 256 KB | 256 KB |
Performance
| Pixel rate | 5.800 GPixel/s | 16.80 GPixel/s |
|---|---|---|
| Texture rate | 17.40 GTexel/s | 58.80 GTexel/s |
| FP32 (float) performance | 696.0 GFLOPS | 1.882 TFLOPS |
| FP64 (double) performance | — | 117.6 GFLOPS (1:16) |
Dimensions & Outputs
| Slot width | MXM Module | Dual-slot |
|---|---|---|
| TDP | 35 W | 85 W |
| Outputs | No outputs | 1x DVI1x HDMI2x mini-DisplayPort |
| Length | — | 183 mm 7.2 inches |
| Suggested PSU | — | 250 W |
| Power connectors | — | 1x 6-pin |
API Support & Features
| DirectX | 11.2 (11_0) | 12 (12_0) |
|---|---|---|
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 2.0 |
| Vulkan | — | 1.2 |
| Shader model | 5.0 | 6.3 |
Other Features
Graphics Card
| Release date | — | Sep 2nd, 2013 |
|---|---|---|
| Generation | — | Sea Islands |
| Production | — | End-of-life |
| Interface | — | PCIe 3.0 x16 |
| Predecessor | — | Southern Islands |
| Successor | — | Volcanic Islands |
