interface is organized into 12 lanes, each lane being a unidirectional 8-bit wide point-to-point path. Five 8-bit wide point-to-point paths are inbound lanes to Cell, while the remaining seven are outbound. This provides a theoretical peak bandwidth of 62.4 GB/s (36.4 GB/s outbound, 26 GB/s inbound) at 2.6 GHz. The FlexIO interface can be clocked independently, typ. at 3.2 GHz. 4 inbound + 4 outbound lanes are supporting memory coherency. Possible applications Video processing card Some companies, such as Leadtek, have released PCI-E cards based upon the Cell to allow for "faster than real time" transcoding of H.264, MPEG-2 and MPEG-4 video. Blade server On August 29, 2007, IBM announced the BladeCenter QS21. Generating a measured 1.05 giga–floating point operations per second (gigaFLOPS) per watt, with peak performance of approximately 460 GFLOPS it is one of the most power efficient computing platforms to date. A single BladeCenter chassis can achieve 6.4 tera–floating point operations per second (teraFLOPS) and over 25.8 teraFLOPS in a standard 42U rack. On May 13, 2008, IBM announced the BladeCenter QS22. The QS22 introduces the PowerXCell 8i processor with five times the double-precision floating point performance of the QS21, and the capacity for up to 32 GB of DDR2 memory on-blade. IBM has discontinued the Blade server line based on Cell processors as of January 12, 2012. PCI Express board Several companies provide PCI-e boards utilising the IBM PowerXCell 8i. The performance is reported as 179.2 GFlops (SP), 89.6 GFlops (DP) at 2.8 GHz. Console video games Sony's PlayStation 3 video game console was the first production application of the Cell processor, clocked at 3.2 GHz and containing seven out of eight operational SPEs, to allow Sony to increase the yield on the processor manufacture. Only six of the seven SPEs are accessible to developers as one is reserved by the OS. Home cinema Toshiba has produced HDTVs using Cell. They presented a system to decode 48 standard definition MPEG-2 streams simultaneously on a 1920×1080 screen. This can enable a viewer to choose a channel based on dozens of thumbnail videos displayed simultaneously on the screen. Supercomputing IBM's supercomputer, IBM Roadrunner, was a hybrid of General Purpose x86-64 Opteron as well as Cell processors. This system assumed the #1 spot on the June 2008 Top 500 list as the first supercomputer to run at petaFLOPS speeds, having gained a sustained 1.026 petaFLOPS speed using the standard