Improving the PS4
One of the many complaints from industry experts is the Playstation 3 RAM limits, featuring only 256MB of XDR DRAM as the consoles main memory unit and another 254MB of GDDR3 RAM for the Nvidia RSX, it is undoubtedly one of the main features of the PS3 that's been holding it back. So what can they do with the Playstation 4 to improve on this? The XDR ram itself, although at 256MB sounds to be selling you short, is actually considered to be up to 12x faster than traditional PC RAM, although when compared to current PC technology, this is no longer a solid fact. The RAM is nothing new, the same type of technology was used in the N64, although nowhere near as powerful as current options but 256MB of it can set you back $120/£80, so at current generation prices it can still cost a bit.
Then we move on to the graphical part of the Playstation 3, the Nvidia RSX (the unit that powers the PS3's graphic capabilities), is now 4 years old and there's plenty of other models available on the market although the RSX is still a pretty sweet graphical option as it boasts 300+ trillion transistors, the ram clocks at 700mhz, and can produce 60 million dots per second, more than enough to power any gaming console but nobody wants today's technology in tomorrows console, right? The RSX is the equivalent to the 8800GT used in many computers over recent years but even the 8800GT is obsolete with the other cards available in todays market, the current price of an 8800GT is roughly $280/£180 and considering this card features technology 4 years out of date, you can expect a cost of at least $300/£200 for the Playstation 4's graphical unit.