SSDs are faster than HDDs. If you have a real need for maximum speed then a RamDisk is the correct choice. It is faster than either of them.

RamDisk vs. Hard Disk Drives (HDD)
The most important difference between a RAM disk and a hard disk is access speed. The time taken for a regular hard disk to move its magnetic heads over the spinning disks (much like the arm moving over old vinyl record disk) is the seek time and is typically measured in milliseconds (thousandths of a second). Whereas a RAM disk does not have mechanical parts and its access speed is typically measured in nanoseconds (billionths of a second). Access to a RAM disk may be 50 times faster or more than to a hard drive.

RamDisk vs. Solid State Drives (SSD)
The SSD “solid-state” technology uses flash memory so it does not spin like a traditional disk, so there is no disk head “seek” time. So in a sense an SSD functions similar to a RamDisk.
However, main system RAM is tightly coupled to the CPU insuring the highest data throughput possible. Whereas SSD typically have to go through some other slower bus to bring data to the CPU. Additionally there is the issue of write amplification, which decreases the SSD lifespan and hurts random write performance and lastly SSDs are still pretty expensive.

RamDisk Plus 12 has a most unique feature. Our patent pending technology can access memory beyond the limitation imposed by a Windows 32-bit operating system! In other words, RamDisk Plus 12 can use "unmanaged" Windows' memory e.g. above 4GB. It can also use the stubbornly inaccessible memory between 3.2GB and 4GB.

See the product's help file for detailed explanation of what "unmanaged" memory is and how to access and use it with RamDisk Plus 12.

Click here to download RamDisk Plus for 32-bit trial.

This feature has now been included into the 64-bit RamDisk Plus version 11.7.917. Any memory not accessible by a Windows 64-bit OS can now be included for use by a RamDisk! For example, Windows 7 Home Premium 64-bit can access up to a maximum 16GB of RAM. If your system has more, then RamDisk Plus can make the extra "unmanaged" RAM above 16GB available for a RamDisk.

Click here to download RamDisk Plus for 64-bit trial.

* These are the operating system's managed memory limits. When greater amounts of RAM are in the system then these can be accessed when our unmanaged memory functionality is enabled in RamDisk Plus.