Ok i don't know where you live, so I can't suggest exact places to buy from but here are the best parts to get:
Sapphire HD 7870 XT - GPU
AMD FX6300 Black Edition - CPU
Corsair XMS3 8GB (2 x 4GB) DDR3-1600 Memory - RAM
Gigabyte GA-78LMT - MOBO
Sir what about 965 black edition and 1090t or something like that.also im not very keen at upgrading gpu right now.whats ur opinion about intel i5 combos?thanks for the reply
Approx cost: £370ish = 430ish euros
The case usually depend on what you need to put into it. What size mobo, gpu, hdd, ssd, radiators, etc. As for a monitor, I like the Asus VS238H-P and Asus VS248H-P. I have both and they work really well.
Will thermaltake wing rs 101 be good for :
Sapphire HD 7870 XT - GPU AMD FX6300 Black Edition - CPU Corsair XMS3 8GB (2 x 4GB) DDR3-1600 Memory - RAM Gigabyte GA-78LMT - MOBO ? Thanks for the replies tho
If you want... dunno which GTX 550 ti brand (i.e. what cooler) you have, so can't tell you what gains you gonna get. But usually you aren't gonna get much more performance than 10-20% more out of it.
But ye, you aren't really gonna kill your card from OCing if you do it right, and since you are gonna replace is soon with a new card anyways, you might as well... (i guess the card is quite old - old enough that the warranty has only a few months left, so resale on ebay is out of the option).