Understand hardware technologies for game platforms

PlayStation 4 and Xbox one

The RAM used for both console is an 8GB RAM however the type of RAM used is different with the PlayStation 4 having a better type of RAM then the Xbox one with the PlayStation 4 having a faster 8GB GDDR5 memory whilst the Xbox's is a 8GB DDR3 making it quite abit slower then the PlayStation 4's. The PlayStation 4's maximum clock frequency is 2.75GHz compared to the Xbox ones 1.75 GHz making the PlayStation's better. Also the PlayStation 4 has a bandwidth of 140 GB/s compared to the Xbox's 68.3 GB/s which is a significantly lower amount.

PlayStation 3 and Xbox 360

The PlayStation 3 has a 256 GDDR3 VRAM and 256 XDR main RAM giving it an overall total of 512 RAM. The PlayStation 3's RAM clocks at a max speed of 650 MHz with a bandwidth of 25.6 GBps this is compared to the Xbox 360's 512MB which is the same amount of MB as the PlayStation 3's however the Xbox 360 has a higher speed with 700 MHz. However the Xbox has a lower bandwidth 22.4 GBps.  

Purpose of memory
What is RAM

RAM or random access memory is a type of computer data storage allowing data items to be read or written. There are different types of RAM with there being SRAM(static) and DRAM(dynamic). In SRAM a bit of data is stored using the state of a six transistor memory cell. This form of RAM is more expensive but is faster requiring less dynamic power than DRAM. DRAM stores a bit of data using a transistor and capacitor pair. This form of memory isn’t as expensive to produce than static RAM so therefore it is the main form of computer memory used in modern computers.