Linked by Thom Holwerda on Thu 21st Feb 2013 18:18 UTC, submitted by twitterfire
Games Late last night, Sony unveiled the PlayStation 4 - sort of. It's got a custom 8-core AMD x86-64 processor, 8GB of GDDR5 RAM, and a custom Radeon-based graphics chip. It's also got additional chips to offload specific tasks like video (de)compression (livestreaming is built-in!), and there's a large focus on streaming games, but most of it is "an ultimate goal" instead of a definitive feature. It won't play PS3 discs (but will eventually stream many PS3 games), and, while there's some weaselwording involved, second hand games are safe. The biggest surprise? The console itself wasn't shown because it's not done yet. No joke. No price, no release date (other than somewhere before the holidays).
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RE: Not impressive
by steve_s on Thu 21st Feb 2013 19:23 UTC in reply to "Not impressive"
steve_s
Member since:
2006-01-16

Your current PC is highly constrained by it's memory bus. Your CPU will spend the majority of it's time waiting whilst reading or writing RAM. Caching helps this a bit, but doesn't avoid the problem. If you have a decent GPU then that will have it's own VRAM on a wider memory bus, but that too is a constraint since the separation of system (CPU) RAM and video RAM requires transfers between the two, which will be conducted at system RAM speeds.

The new PS4 will have a radically faster memory bus than your PC, and a unified memory architecture. The CPU and GPU will spend an order of magnitude less of their time waiting for RAM, so they get to run at closer to their full potential speed significantly more of the time.

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