Seagate Barracuda 7200.11 500 GB SATA 32 MB Cache Bulk/OEM Hard Drive ST3500320AS Spindle Speed is 7,200 RPM Delivers 500 GB capacity, 32 MB Cache Interface option is SATA 3Gb/s NCQ Ships with the industry&#8217;s most reliable and proven perpendicular magnetic recording (PMR) technology Consumes up to 43 percent less power during idle than previous products, enabling customers to build low-power systems