This is from my old 2012 server running a normal SSD on sata

Sequential Read (Q= 32,T= 1) : 208.260 MB/s
Sequential Write (Q= 32,T= 1) : 125.714 MB/s
Random Read 4KiB (Q= 8,T= 8) : 123.640 MB/s [ 30185.5 IOPS]
Random Write 4KiB (Q= 8,T= 8) : 69.260 MB/s [ 16909.2 IOPS]
Random Read 4KiB (Q= 32,T= 1) : 117.863 MB/s [ 28775.1 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 67.778 MB/s [ 16547.4 IOPS]
Random Read 4KiB (Q= 1,T= 1) : 16.088 MB/s [ 3927.7 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 60.924 MB/s [ 14874.0 IOPS]

This was the new server
4xSAS 2.5"  10k 147gb in raid 5  windows server 2012 r2 KVM on Proxmox
IDE interface

Sequential Read (Q= 32,T= 1) : 198.371 MB/s
Sequential Write (Q= 32,T= 1) : 9.907 MB/s
Random Read 4KiB (Q= 8,T= 8) : 1.013 MB/s [ 247.3 IOPS]
Random Write 4KiB (Q= 8,T= 8) : 0.358 MB/s [ 87.4 IOPS]
Random Read 4KiB (Q= 32,T= 1) : 1.132 MB/s [ 276.4 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 0.306 MB/s [ 74.7 IOPS]
Random Read 4KiB (Q= 1,T= 1) : 0.428 MB/s [ 104.5 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 0.160 MB/s [ 39.1 IOPS]

And with the VirtIO drivers and interface

Sequential Read (Q= 32,T= 1) : 6320.894 MB/s
Sequential Write (Q= 32,T= 1) : 7532.114 MB/s
Random Read 4KiB (Q= 8,T= 8) : 625.720 MB/s [ 152763.7 IOPS]
Random Write 4KiB (Q= 8,T= 8) : 651.093 MB/s [ 158958.3 IOPS]
Random Read 4KiB (Q= 32,T= 1) : 346.482 MB/s [ 84590.3 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 401.362 MB/s [ 97988.8 IOPS]
Random Read 4KiB (Q= 1,T= 1) : 21.330 MB/s [ 5207.5 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 21.783 MB/s [ 5318.1 IOPS]

drivers here
https://fedoraproject.org/wiki/Windows_Virtio_Drivers#Direct_download 
https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/stable-virtio/virtio-win.iso