The information for both drives regarding the Random Write (100% Span) is correct. You may verify this from the product specifications for each model:
Intel® SSD 320 Series Product Specifications:
Intel® SSD DC S3700 Product Specifications:
Keep in mind the Intel® SSD DC S3700 is a performance drive designed for data centers.
Random Write (100% Span): Speed with which the SSD is able to record data to arbitrary locations in the memory, across the entire span of the drive. Measured in IOPS (Input/Output Operations per Second).