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 | Year | Die Size (mm 2 ) [1] | Config core [2] | MTriangles/s [1] | MPixel/s [1] | Bus width ( bit ) | DirectX | OpenGL | OpenGL ES | GFLOPS(@ 200MHz) | Frequency |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| SGX520 | Jul 2005 | 2.6@65nm | 1/1 | 7.0 | 100.0 | 32-128 | N/A | N/A | 2.0 | 0.8 | 200.0 |
| SGX530 | Jul 2005 | 7.2@65nm | 2/1 | 14.0 | 200.0 | 32-128 | N/A | N/A | 2.0 | 1.6 | 200.0 |
| SGX531 | Oct 2006 | 65nm | 2/1 | 14.0 | 200.0 | 32-128 | N/A | N/A | 2.0 | 1.6 | 200.0 |
| SGX535 | Nov 2007 | 65nm | 2/2 | 14.0 | 400.0 | 32-128 | 9.0c | 2.1 | 2.0 | 1.6 | 200.0 |
| SGX540 | Nov 2007 | 65nm | 4/2 | 20.0 | 400.0 | 32-128 | N/A | N/A | 2.0 | 3.2 | 200.0 |
Question:
What is the die size(mm 2) for model sgx531?
Answer:
65nm