We were using a 60GB RAMDisk on our server machine (5 years old, 1 CPU, 8 Core, 8 HT, 128GB RAM). CrystalDiskMark shows Seq READ 6700 MB/s and WRITE 8700 MB/s.
Now we have a new server (2 CPU, 16 Core, 16 HT, 512GB RAM) with 256GB RAMDisk. CrystalDiskMark shows now Seq READ 3200 MB/s and WRTIE 3300 MB/s. Also all other values are nearly half as fast as on old server.
Do you have some suggestions why this happens? No Anti-Virus is running. RAM is faster (2.133 to 2.400), both with ECC.