Xbox One to get big memory bandwidth boost in final hardware?
Microsoft is working hard to improve the memory bandwidth situation on the Xbox One, and they just might have had a breakthrough.
When the PlayStation 4 and Xbox One specification were first revealed (or rather discovered, in case of the latter), it became immediately apparent that Microsoft’s console this time round had a huge disadvantage in terms of raw power. Not only did the PS4 pack 50% more GPU cores, but the memory bandwidth was far higher than that in the Xbox One.
Here’s a quick recap. Sony’s next-generation game console packs a 256-bit wide memory bandwidth, with 8 GB of GDDR5 memory clocked at 5500 MHz. This translates to an impressive 176 GB/s unified bandwidth that is available to the entire APU (Accelerated Processing Unit, the CPU-GPU core made by AMD) inside the console. Microsoft went with the more traditional (and much cheaper) DDR3 RAM clocked at 2133 MHz. The resultant bandwidth stood at a paltry 68.3 GB/s. However, the company added 32 MB of high-speed eSRAM that boasted of as much as 102 GB/s memory bandwidth available for developers to exploit. But thanks to the unified nature of the memory found in the PS4, developers are going to have a much easier time tapping into the massive bandwidth reserve that Sony’s console offers. To help their case, Microsoft seems to have made a breakthrough with optimizing their eSRAM.
A new report at Eurogamer claims that Microsoft has managed to increase the bandwidth on the final Xbox One hardware to as much as 192 GB/s, roughly an 88% increase with respect to the original bandwidth. The report says that Microsoft discovered in the final Xbox One hardware that their eSRAM can handle read/write operations simultaneously, translating the 102 GB/s (when calculating for separate read/write operations) to a more impressive 192 GB/s. That being said, the eSRAM amount still remains fixed at a somewhat low 32 MB.
Microsoft’s Xbox One game console is scheduled to release this November, 2013. Not so surprisingly, the PlayStation 4 will also be launched in the same time frame.