DDR3: distance between left side of RAM stick and notch = 5.4 cm (2.1 in) This difference in notch position is also why you can't use DDR3 RAM in a DDR2 system or install DDR2 RAM into a DDR3 slot (even though they have the same number of pins). Dual Channel DDR3/DDR3L, 4 DIMMs 2-Way Graphics Support with Exclusive Ultra Durable Metal Shielding over the PCIe Slots Dual PCIe Gen3 x4 M.2 Connectors with up to 32Gb/s Data Transfer (PCIe NVMe & SATA SSD support) 2 SATA Express Connectors for up to 16Gb/s Data Transfer. Dual Channel DDR3 Memory Technology - 2 x DDR3 DIMM Slots - Supports DDR3 1866/1600/1333/1066 non-ECC, un-buffered memory - Max. Capacity of system memory: 32GB. Supports Intel ® Extreme Memory Profile (XMP) 1.3 / 1.2 - Supports AMD Memory Profile (AMP). Product Title RipjawsX 16GB (2 x 8GB) DDR3 SDRAM Memory Kit. Average rating: 5 out of 5 stars, based on 1 reviews 1 ratings. Current Price $82.67 $ 82. SuperUser reader Seva wants to know if it is possible to use two types of DDR3 RAM with the same motherboard: I currently have a stick of DDR3 RAM (1333 MHz, 4 GB) in one of the slots on my motherboard (Asus H61M).

Short for double data rate three, DDR3 is a type of DRAM (dynamic random-access memory) released in June 2007 as the successor to DDR2. DDR3 chips have bus clock speed of 400 MHz up to 1066 MHz, range in size from 1 to 24 GB, and consume nearly 30% less power than their predecessors. DDR3 RAM sticks for a desktop computer have 240 pins. For a laptop computer, DDR3 RAM sticks have 204 pins.

These memory chips can only be installed on a motherboard that supports DDR3 memory and are not backward compatible with DDR2 memory slots.

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