SuperSpeed's RamDisk $50, SuperVolume $90 and SuperCache II $150 http://www.superspeed.com/desktop/ramdisk.php
RamDisk makes a virtual Disk from the RAM installed on the system board... the 'disk' data can be loaded at start-up, and also be saved to an image file at shut-down. SuperVolume has the RAM mirror the data from a drive or partition, and that is used for I/O... and the I/O is also transferred to the hard drive itself. SuperCache uses the RAM as a cache, the same way as SuperVolume, but for drives/partitions that are larger than the amount of RAM available for the app.
the SuperSpeed http://www.superspeed.com/desktop/ramdisk.php
RamDisk, SuperVolume, and SuperCache have the strengths of not having the bottleneck of a SATA, PATA or PCI-E interface... especially RamDisk which only uses the board RAM.
HyperDrive IV has the benefit of holding 8GB or 16GB, whereas the SuperSpeed apps and iRAM can only use 4GB, and SuperSpeed would actually use less since some RAM is needed for the usual on-board operations.
HyperDrive and iRAM can retain data after shut-down, by battery for a few hours (HyperDrive- 2hrs, iRam 5-10hrs), and by an external power plugged to the PSU, or to a wall outlet or UPS.
The SuperSpeed apps SuperVolume and SuperCache can retain data after full shut down and no power, since the data is also written to the hard drive.
Including the cost of $80 for a 1GB RAM stick, and $140 for a 2GB RAM stick (about the cheapest DDR1 on pricegrabber))
Gigabyte's iRam card at $450 for 4GB is $110 per GB of RAM drive.
HyperOS HyperDrive card is $1300 for a 8GB card at ($160 per GB) , and $2,100 for a 16GB at ($130 per GB) .
SuperSpeed RamDisk app. is $300 for 3GB at ($100 per GB) (assuming 4GB is installed on the board, and 1GB is used for the usual physical RAM uses). Using 2GB is $210 at $105 a GB . And using 1GB costs $130 for $130 a GB.
Cenatek RamDisk is the same cost as SuperSpeed's RamDisk... $100/GB for 3GB, $105/GB for 2GB, and $130/GB for 1GB.
WinSoft RamDisk is a bit less, $90/GB for 3GB, $100/GB for 2GB, and $115/GB for 1GB.
There is also the ability to combine SuperCache or SuperVolume, with an iRam or HyperDrive IV. So the reading and writing to the hard drive would be faster.
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