27英寸 5K Retina 显示屏 iMac 固态硬盘SSD 更换

Hello,

So i have maxed out version of 2014 iMac 5k with 3TB fusion drive. I am looking to replace above described SSD with crucial 920 gb ssd. Is there other brands of compatible ssd's you would recommend? Will this new ssd still act as fusion drive or can I install OS X separately on it?

Thanks