Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Model | Launch | Model Number | Code name | Fab ( nm ) | Bus interface | Memory ( MiB ) | Core clock ( MHz ) | Memory clock ( MHz ) | Config core 1 | Pixel ( GP /s) | Texture ( GT /s) | Bandwidth ( GB /s) | Bus type | Bus width ( bit ) | DirectX | OpenGL | Processing Power GFLOPs | TDP (Watts)GPU only | Features |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Radeon HD 6330M | November 26, 2010 | Robson LP | Cedar | 40 | PCIe 2.1 x16 | up to 1024 | 500 | 800 | 80:8:4 | 2.0 | 4.0 | 12.8 | DDR3 | 64 | 11 | 4.2 | 80 | 7 | UVD2.2, PowerPlay |
| Radeon HD 6350M | November 26, 2010 | Robson Pro | Cedar | 40 | PCIe 2.1 x16 | up to 1024 | 500 500 | 800 900 | 80:8:4 | 2.0 | 4.0 | 12.8 14.4 | DDR3 | 64 | 11 | 4.2 | 80 | 7 | UVD2.2, PowerPlay |
| Radeon HD 6370M | November 26, 2010 | Robson XT | Cedar | 40 | PCIe 2.1 x16 | 1024 | 750 | 900 | 80:8:4 | 3.0 | 6.0 | 14.4 | DDR3 | 64 | 11 | 4.2 | 120 | 11 | UVD2.2, PowerPlay |
| Radeon HD 6430M | January 4, 2011 | Seymour LP | Caicos | 40 | PCIe 2.1 x16 | 1024 | 480 | 800 | 160:8:4 | 1.92 | 3.84 | 12.8 | DDR3 | 64 | 11 | 4.2 | 153.6 | Unknown | UVD3.0, PowerPlay |
| Radeon HD 6450M | January 4, 2011 | Seymour Pro | Caicos | 40 | PCIe 2.1 x16 | 1024 | 600 | 800 | 160:8:4 | 2.4 | 4.8 | 12.8 | DDR3 | 64 | 11 | 4.2 | 192 | Unknown | UVD3.0, PowerPlay |
| Radeon HD 6470M | January 4, 2011 | Seymour XT | Caicos | 40 | PCIe 2.1 x16 | 1024 | 700 750 | 800 800 | 160:8:4 | 2.8 3.0 | 5.6 6.0 | 12.8 | DDR3 | 64 | 11 | 4.2 | 224 240 | Unknown | UVD3.0, PowerPlay |
| Radeon HD 6490M | January 4, 2011 | Seymour XT | Caicos | 40 | PCIe 2.1 x16 | 512 | 800 | 800 | 160:8:4 | 3.2 | 6.4 | 25.6 | GDDR5 | 64 | 11 | 4.2 | 256 | Unknown | UVD3.0, PowerPlay |
| Radeon HD 6530M | November 26, 2010 | Capilano Pro | Redwood | 40 | PCIe 2.1 x16 | 1024 | 500 | 900 | 400:20:8 | 4.0 | 10.0 | 28.8 | DDR3 | 128 | 11 | 4.2 | 400 | 26 | UVD2.2, PowerPlay |
| Radeon HD 6550M | November 26, 2010 | Capilano Pro | Redwood | 40 | PCIe 2.1 x16 | 1024 | 600 | 900 | 400:20:8 | 4.8 | 12.0 | 28.8 | DDR3 | 128 | 11 | 4.2 | 480 | 26 | UVD2.2, PowerPlay |
| Radeon HD 6570M | November 26, 2010 | Capilano XT | Redwood | 40 | PCIe 2.1 x16 | 1024 | 650 | 900 | 400:20:8 | 5.2 | 13.0 | 28.8 57.6 | DDR3 GDDR5 | 128 | 11 | 4.2 | 520 | 30 | UVD2.2, PowerPlay |
| Radeon HD 6630M | January 4, 2011 | Whistler LP | Turks | 40 | PCIe 2.1 x16 | 256(mac) 1024 | 485 | 800 | 480:24:8 | 3.88 | 11.64 | 51.2 (mac) 25.6 | GDDR5(mac) DDR3 | 128 | 11 | 4.2 | 465.6 | Unknown | UVD3.0, PowerPlay |
| Radeon HD 6650M | January 4, 2011 | Whistler Pro | Turks | 40 | PCIe 2.1 x16 | 1024 | 600 | 900 | 480:24:8 | 4.8 | 14.4 | 28.8 | DDR3 | 128 | 11 | 4.2 | 576 | Unknown | UVD3.0, PowerPlay |
| Radeon HD 6730M | January 4, 2011 | Whistler XT | Turks | 40 | PCIe 2.1 x16 | 1024 | 725 | 800 | 480:24:8 | 5.8 | 17.4 | 25.6 | DDR3 | 128 | 11 | 4.2 | 696 | Unknown | UVD3.0, PowerPlay |
| Radeon HD 6750M | January 4, 2011 | Whistler Pro | Turks | 40 | PCIe 2.1 x16 | 256 512 1024 | 600 | 800 900 | 480:24:8 | 4.8 | 14.4 | 51.2 57.6 | GDDR5 | 128 | 11 | 4.2 | 576 | Unknown | UVD3.0, PowerPlay |
| Radeon HD 6770M | January 4, 2011 | Whistler XT | Turks | 40 | PCIe 2.1 x16 | 1024 | 725 | 900 | 480:24:8 | 5.8 | 17.4 | 57.6 | GDDR5 | 128 | 11 | 4.2 | 696 | Unknown | UVD3.0, PowerPlay |
| Radeon HD 6830M | January 4, 2011 | Granville Pro | Juniper | 40 | PCIe x16 2.1 | up to 2048 | 575 | 800 | 800:40:16 | 9.2 | 23.0 | 25.6 | DDR3 | 128 | 11 | 4.2 | 920 | 39 | UVD2.2, PowerPlay |
| Radeon HD 6850M | January 4, 2011 | Granville XT | Juniper | 40 | PCIe x16 2.1 | up to 2048 | 675 | 800 | 800:40:16 | 10.8 | 27.0 | 25.6 | DDR3 | 128 | 11 | 4.2 | 1080 | 50 | UVD2.2, PowerPlay |
| Radeon HD 6850M | January 4, 2011 | Granville Pro | Juniper | 40 | PCIe x16 2.1 | 1024 | 575 | 800 | 800:40:16 | 9.2 | 23.0 | 57.6 | GDDR5 | 128 | 11 | 4.2 | 920 | 39 | UVD2.2, PowerPlay |
| Radeon HD 6870M | January 4, 2011 | Granville XT | Juniper | 40 | PCIe x16 2.1 | 1024 | 675 | 1000 | 800:40:16 | 10.8 | 27 | 64 | GDDR5 | 128 | 11 | 4.2 | 1080 | 50 | UVD2.2, PowerPlay |
| Radeon HD 6950M | January 4, 2011 | Blackcomb Pro | Barts | 40 | PCIe 2.1 x16 | up to 2048 | 580 | 900 | 960:48:32 | 18.56 | 27.84 | 115.2 | GDDR5 | 256 | 11 | 4.2 | 1113.6 | 50 | UVD3.0, PowerPlay |
| Radeon HD 6970M | January 4, 2011 | Blackcomb XT | Barts | 40 | PCIe 2.1 x16 | up to 2048 | 680 | 900 | 960:48:32 | 21.76 | 32.64 | 115.2 | GDDR5 | 256 | 11 | 4.2 | 1305.6 | 75 | UVD3.0, PowerPlay |
| Radeon HD 6990M | July 12, 2011 | Blackcomb XTX | Barts | 40 | PCIe 2.1 x16 | 2048 | 715 | 900 | 1120:56:32 | 22.88 | 40.04 | 115.2 | GDDR5 | 256 | 11 | 4.2 | 1601.6 | 75 | UVD3.0, PowerPlay |
| Model | Launch | Model Number | Code name | Fab ( nm ) | Bus interface | Memory ( MiB ) | Core clock ( MHz ) | Memory clock ( MHz ) | Config core 1 | Fillrate | Fillrate | Memory | Memory | Memory | API compliance (version) | API compliance (version) | Processing Power GFLOPs | TDP (Watts) | Features |
Question:
How many values for bus width have a bandwidth of 25.6 and model number of Granville Pro?
Answer:
1.0