Only have 450$ what should i buy first to make my pc a gaming build

[nibir2011]

hello guys, i want to buy a gpu and a power supply
i have a pc that i bought in 2009,here is its configuration

CPU: intel core 2 duo e7400 2.8 ghz fsb1066 mhz

MOBO: gigabyte g45-ud2h g45+ichr10

RAM:2 gb transcend 800 mhz (1+1) dual channel

HDD: 500 gb 7200rpm western digital

PSU:Chinese 400 watt low quality

GPU:intel hd4500x with dx10 sm4 support

DVD:asus 24x dvd writer

Case: delux high quality thermal case with 2 rear 80mm fans

Montior: samsung syncmaster 19" 5ms Widescreen LCD Monitor with vga adapter resulation1366x768

so you guys can see that my build lack in 3 items generally(of course there are other things but i donot have money)
those are gpu, power supply,ram

in my region only thermal take power supply,sapphire-gygabyte-asus gpu ,transcend ram is found so i am stuck with these
but i donot know which model is suitable for me please refer me some models

the things i want to do with my pc:gaming ,3d rendering,programming,ai(artificial intelligence)computing, office and graphics work.

N.B: i am thinking of upgrading its cpu and motherboard in 18 months

here are some models that i am thinking to be suitable

1. power supply

http://www.newegg.com/Product/Produ...53-140^17-153-140-TS,17-153-151^17-153-151-TS

http://www.newegg.com/Product/Produ...53-138^17-153-138-TS,17-153-150^17-153-150-TS

http://www.newegg.com/Product/Produ...53-126^17-153-126-TS,17-153-116^17-153-116-TS

2.graphics card

http://www.newegg.com/Product/Produ...02-948^14-102-948-TS,14-102-924^14-102-924-TS

http://www.newegg.com/Product/Produ...21-391^14-121-391-TS,14-121-418^14-121-418-TS

http://www.newegg.com/Product/Produ...25-333^14-125-333-TS,14-125-357^14-125-357-TS

http://www.newegg.com/Product/Produ...21-391^14-121-391-TS,14-121-446^14-121-446-TS

http://www.newegg.com/Product/Produ...50-561^14-150-561-TS,14-150-521^14-150-521-TS

http://www.newegg.com/Product/Produ...50-561^14-150-561-TS,14-150-521^14-150-521-TS

http://www.newegg.com/Product/Produ...21-425^14-121-425-TS,14-125-401^14-125-401-TS

so guys i have tried my best to make this post as detail as possible so please give your replies as detail too.

thank you very much

nibir2011

 

[FinneousPJ]

Supposedly the Thermaltake Toughpower series isn't as bad as Thermaltake on average. Maybe get one of those. Try to find reviews before purchasing anything though.

Get the HD6870, brand is irrelevant. Cheapest one!

 

[IH8U]

Where are you located? as you can also find what I listed on Amazon.

http://www.newegg.com/Product/Product.aspx?Item=N82E16819115074
$190 Intel Core i5-2400 (you can save a bit more, and get an i3 instead)
http://www.newegg.com/Product/Product.aspx?Item=N82E16813157249
$90 ASRock P67 PRO3 SE LGA 1155 Intel P67
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371016
$50 Antec BP550 Plus 550W Continuous Power ATX12V V2.2 80 PLUS (better than any TT)
http://www.newegg.com/Product/Product.aspx?Item=N82E16820148463
$35 Crucial Ballistix 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600

http://www.newegg.com/Product/Product.aspx?Item=N82E16814150540
$110 XFX HD-677X-ZNLC Radeon HD 6770

or

http://www.newegg.com/Product/Product.aspx?Item=N82E16814125367
$130 GIGABYTE GV-N550OC-1GI GeForce GTX 550 Ti

 

[nibir2011]

man cannot buy these i cannot buy from web i can buy only from stores so i am stuck with these

but i have short listed two gpus 1.gtx 560ti 2.hd6870

dont know which to choose

please give me some advice about the power supply

 

[nibir2011]

more replies please

 

[cyborg28]

Pics of the:
delux high quality thermal case with 2 rear 80mm fans

please!

 

[cyborg28]

man cannot buy these i cannot buy from web i can buy only from stores so i am stuck with these

but i have short listed two gpus 1.gtx 560ti 2.hd6870

dont know which to choose

please give me some advice about the power supply

A lot depends on where you live and what stores are near you.

Some of the OCZ power supplies like the OCZ ModXStream Pro series are very good and very cheap with mail in rebates. (often $30 mir).