I have a MSI GTX 970 armor 4gd5t. The fan on my cooler recently stopped working, so I thought it would be great excuse to get an aftermarket cooler. I opened up the card and found that the VRAM, or what I think is the VRAM chips, aren't cooled and neither is anything besides the chip. Do I need to put on the VRAM heatsinks if my last cooler didn't have any? My aftermarket cooler is a Arctic Accelero Xtreme iii