Windows' Resource Monitor can show you this information.
Your high disk writes are most likely coming from virtual memory. If you have the RAM and are concerned for the durability of your SSD, you may want to consider moving your page file to another disk. You can do this on Windows in System Properties. In the Advanced tab click on Settings under the Performance section. On the Advanced tab click on Change in the Virtual Memory section. Moving the page file to a HDD may reduce your performance if you don't have enough RAM to keep your pages loaded.