OK so im building a new system and i have never attempted anything like this before, my aim is to build a reliable system that will last 5 years with minimal upgrades (i am not looking to buy a monitor, keyboard, mouse, windows 7 or anything like that as im sorting that out with a different budget/already have it).
I have spend £77.5 so far on a processor, AMD FX4170 (no heatsink) and the rest of my money is still to be spent.. (£278.5)
i have found this tec, tell me what the biggest bottle neck is in my system and what the most advanced thing is so i can balance them out to get the right match of all of it.
gpu ASUS HD7770 1020 MHz Overclock (its the big version with the 2 copper heat pipes coming out of it) (£83)
motherboard Gigabyte GA970-DS3 (£50)
heatsink/fan Cooler master 212 Evo (£24)
case Antec 902 v3 (£53)
psu XFX Core Edition PRO450W (£32)
ram 8gb Corsair Vengeance low profile ram 8gb 1600mhz (£29)
hard drive something for 7 quid lol (ill probally go overbudget on this as i know what 7 quid is gona get me... a 1 byte usb stick yay! )
Arctic Cooling Freezer 7 PRO Rev.2 Quiet CPU Cooler #20729
GIGABYTE GA-970A-DS3 AMD 970A (Socket AM3+) DDR3 PCI-Express ATX Motherboard #48467
GeiL Black Dragon (RED LEDs) 4GB (2x2GB) DDR3 PC3-8500C7 1066MHz Dual Channel Kit (GB34GB1066C7DC) #50154
430W be quiet! PURE POWER L7 80PLUS Power Supply #49505
ARIANET StealthX Black Midi Tower Gaming Case #47034
320GB Western Digital WD3200BPVT Scorpio Blue 2.5" Hard Drive - Sony Playstation PS3 Compatible #49533
ARIANET Radeon HD 7770 1024MB GDDR5 PCI-Express Graphics Card (OEM) + 2 FREE Games!
Total Price £291.73
I think buying the processor was a bit foolish, although you got a decent price for it the one step down is cheaper and better value. Also an intel i3 would have been better and pretty much exactly the same price.
The biggest bottleneck will be the GPU while playing games as it's fairly weak.
As to whether it will outperform your PS3, hard to tell. On a basic technology level it's streets ahead but the system overheads (from drivers and windows etc) on PC ,especially on weaker PC's, can crush the framerates. Having said that it will probably be faster and load times should be a lot better.
The best thing to do would be to save more money and buy later as it's a really tight budget. You may also want to consider looking on ebay and gum tree.