Buffalo technologyrsquos new dynamic random access memory external hard drive is capable of extremely fast data transfer speeds with an extra large 1gb cache with the dram cache function enabled the hd gdu3 series hard drive efficiently buffers files during jobs enabling write speeds over 400 mbs ready to copy 1000 ndash 800mb ndash photos yoursquoll be done in about 35 seconds read speed is also impressive via the dram cache enabling speeds of up to 300 mbs which equates to approximate