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tres said: keep in mind they went with ddr3 which is great at multitasking not only that. "The whole point behind everything above is to accurately express what resources are available to games. We've all seen the information stating that games are provided with 5 gigabytes of memory, 6 of the CPU cores, and supposedly 90% of the CPU cycles. That's going up against the PS4's 8 gigabytes, and a similar processor. Granted, the memory on the PS4 has almost twice the bandwidth, but there are other pieces in the Xbox One that make up for it. Still sounds like a losing hardware battle. Here's the reality though. We have 8 gigabytes of memory. 5 of which are untouchable and only for games. A developer can always expect at the very least to have those 5 gigabytes. Let's assume that the hypervisor on this thing takes up half a gig of memory. That leaves 2.5 gigabytes available to the Windows kernel. It's not dedicated, but it has access to that 2.5. That doesn't mean your apps will always consume 5/16th of your Xbox One's memory. The beauty of a hypervisor is we can shut off or suspend operating systems without any effect to others on that same machine. Got a game that needs to load up 6 gigabytes into memory? That's fine - the apps side won't even get in the way. How about 7 gigabytes? I think that's kind of outlandish but let's just suppose. If apps can't run within that last half gig of memory we can just suspend the whole thing and give the whole 7.5 gigabytes to the game." |
There is no difference between DDR3 and GDDR5 for Multitasking... inclusive the AMD APUs didn't have benefices over low latencies and even if have the difference is less than 2ns for DDR3 over GDDR3... that a thing that I don't understand why people thinks DDR3 is better for multitasking than GDDR5.
MS just don't used GDDR5 because at the time 8GB was impossible... Sony used 4GB and have lucky because 8GB was possible early this year (Samsung and Hunix launched for mass productions the 4Gbps modules).
And again the memory is reserved for games and there is no sense in Hypervisor make dinamic allocation of RAM while running a game.
