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 number | sSpec number | Cores | Frequency | Turbo | L2 cache | L3 cache | GPU model | GPU frequency | Socket | I/O bus | Release date | Part number(s) | Release price ( USD ) |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| standard power | standard power | standard power | standard power | standard power | standard power | standard power | standard power | standard power | standard power | standard power | standard power | standard power | standard power |
| Core i7-4558U | SR188(C0) | 2 | 2.8 GHz | 3/5 | 2 × 256 KB | 4 MB | Iris Graphics 5100 | 200–1200 MHz | BGA-1168 | DMI 2.0 | June 2013 | CL8064701481303 | $454 |
| low power | low power | low power | low power | low power | low power | low power | low power | low power | low power | low power | low power | low power | low power |
| Core i7-4500U | SR16Z(C0) | 2 | 1.8 GHz | 9/12 | 2 × 256 KB | 4 MB | HD Graphics 4400 | 200–1100 MHz | BGA-1168 | DMI 2.0 | June 2013 | CL8064701477202 | $398 |
| Core i7-4550U | SR16J(C0) | 2 | 1.5 GHz | 12/15 | 2 × 256 KB | 4 MB | HD Graphics 5000 | 200–1100 MHz | BGA-1168 | DMI 2.0 | June 2013 | CL8064701462901 | $454 |
| Core i7-4600U | SR1EA(C0) | 2 | 2.1 GHz | 9/12 | 2 × 256 KB | 4 MB | HD Graphics 4400 | 200–1100 MHz | BGA-1168 | DMI 2.0 | September 2013 | CL8064701477000 | $398 |
| Core i7-4650U | SR16H(C0) | 2 | 1.7 GHz | 12/16 | 2 × 256 KB | 4 MB | HD Graphics 5000 | 200–1100 MHz | BGA-1168 | DMI 2.0 | June 2013 | CL8064701462800 | $454 |
| ultra-low power | ultra-low power | ultra-low power | ultra-low power | ultra-low power | ultra-low power | ultra-low power | ultra-low power | ultra-low power | ultra-low power | ultra-low power | ultra-low power | ultra-low power | ultra-low power |
| Core i7-4610Y | SR18D(C0) | 2 | 1.7 GHz | 9/12 | 2 × 256 KB | 4 MB | HD Graphics 4200 | 200–850 MHz | BGA-1168 | DMI 2.0 | September 2013 | CL8064701512303 | $415 |
Question:
What's the GPU frequency that has ultra-low power in cores?
Answer:
ultra-low power