So many people doing VDI but for our company we have been successfully doing RDS environment for years. with 2012R2 and now 2016 we were using a K4200 and it was working well but was trying to utilize a multi- GPU much like SLI…
Is this even possible with the Grid Card? when we had it installed we could see all 4 GPUs but all the load went to only 1 GPU.
Multiple GPU cards are not supported for bare metal - the M6 (which only has one GPU can be used). It is a request we are aware of. One option is to virtualise and have 4 server VMs one for each GPU - although for a RDS server the K2 would be the normal recommendation - the K1 is designed for high-density VDI for office worker VDI. The spec of each GPU is below what it usually recommended for shared use.
For bare-metal a single GPU card e.g. a Quadro such as the K4200 would be a valid choice although we’d often normally see something more like a K6000 or even M6000 if using large numbers of users as again it’s shared resource.