XDR™2 Memory vs. GDDR5

The Future of Memory

XDR™2 memory is the latest generation of the award-winning XDR memory architecture. Capable of unprecedented data rates of up to 20Gbps, XDR 2 is the world's fastest memory solution. It delivers twice the peak bandwidth per device when compared to GDDR5 DRAM.

Fast and Smart

The XDR 2 memory solution provides incredible bandwidth performance and does so at far lower power than GDDR5 memory. In fact, XDR 2 consumes 30% less power than GDDR5 at equal bandwidth performance. Given equal power budget, XDR 2 memory provides 50% more bandwidth than GDDR5. And at full speed, XDR 2 DRAM deliver twice the bandwidth of GDDR5 devices.

Born of the Terabyte Bandwidth Initiative

XDR 2 memory achieves this power and performance leadership through key Rambus innovations, many of which were developed through Rambus' Terabyte Bandwidth Initiative. The first to employ a Fully Differential Memory Architecture (FDMA), XDR 2 memory has improved signal integrity and lower voltage swing versus single-ended signaling architectures such as GDDR5. Other innovations include Flexlink™ C/A, for more capacity scalability and flexible access granularity, and 32X Data Rate.

Rock Solid and Pin Efficient

The Fully Differential Memory Architecture of XDR 2 memory enables rock solid signal integrity at blindingly fast speeds. Differential signaling in combination with pin-efficient Flexlink C/A technology, enables XDR 2 memory to deliver a breakthrough level of performance with fewer controller and DRAM pins than single-ended GDDR5 memory. Any way you look at it, speed, power, bandwidth, robustness or pin-efficiency, XDR 2 memory is the best way to supercharge your next-generation graphics, gaming or multi-core computing design.