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:
| Graphics | Launch | Market | CPU | Code name | Device ID | Core clock ( MHz ) | Execution units | Shader model | DirectX | OpenGL | OpenCL | Memory bandwidth ( GB/s ) | DVMT ( MB ) | CVT HD | QSV |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| HD Graphics | 2010.0 | Desktop | Celeron G1101 PentiumG69xx | Ironlake ( Clarkdale ) | 42.0 | 533 | 12.0 | 4.0 | 10.0 | 2.1 | No | 17 | 1720.0 | No | No |
| HD Graphics | 2010.0 | Desktop | Core i3-5x0 Core i5-6x0 Core i5-655K | Ironlake ( Clarkdale ) | 42.0 | 733 | 12.0 | 4.0 | 10.0 | 2.1 | No | 21.3 | 1720.0 | Yes | No |
| HD Graphics | 2010.0 | Desktop | Core i5-661 | Ironlake ( Clarkdale ) | 42.0 | 900 | 12.0 | 4.0 | 10.0 | 2.1 | No | 21.3 | 1720.0 | Yes | No |
| HD Graphics | 2010.0 | Mobile | Celeron U3xxx Pentium U5xxx | Ironlake ( Arrandale ) | 46.0 | 166–500 | 12.0 | 4.0 | 10.0 | 2.1 | No | 12.8 | 1720.0 | No | No |
| HD Graphics | 2010.0 | Mobile | Core i7-620LE Core i7-6x0LM | Ironlake ( Arrandale ) | 46.0 | 266–566 | 12.0 | 4.0 | 10.0 | 2.1 | No | 17.1 | 1720.0 | Yes | No |
| HD Graphics | 2010.0 | Mobile | Celeron P4xxx Pentium P6xxx | Ironlake ( Arrandale ) | 46.0 | 500–667 | 12.0 | 4.0 | 10.0 | 2.1 | No | 17.1 | 1720.0 | No | No |
Question:
How many shader models have a 900 core clock ( mhz )?
Answer:
1.0