Please help to upgrade my graphic card

[habs2habs]

hi everyone

please i need you advise.

i have packard bell desktop model ipower 9099.specification:
-windows vista ultimate sp2
-nvidia 640 mb 8800 gts graphic card up to date version
-1 TB hard disk
-direct x 10.0
4 gb memory ddr2

i would to upgrade the graphic card,but confused which one.the options:

-ati 4870 1 gb gddr5
-ati 4870 512 mb gddr5
ati 4890

or nvidia graphic card gts(250,260,275,280,285)i found out the nvidia graphic card is more expensive than ati,so i prefer ati over the nvidia

i am playing a lot of game: Crysis,Crysis warhead,unreal tournemant,delta force,sniper elite,call of duty etc...)

i have 400 watts psu.

please do i need to upgrade the psu as well?

please which graphic card do you recommend me both(ati,and nvidia)
which psu do you recommend me to buy around £60.00?

some of the graphic card require 2 6 pin

i hope to hear from you very soon

my kindest regards
habib

 

[hallowed_dragon]

Try the new ATI 5850. Better than all the options you enumerated from both companies, both in performance, features and power saving.
If your PSU is from a good brand you will have no problem, but if it is from a no-name brand you should upgrade to Corsair, TT, Antec etc.(min 450W)

 

[Guest]

http://www.newegg.com/Product/Product.aspx?Item=N82E16814500113
1. this is a good card for small machines and does not require a PS upgrade
2. same size and power requirements as a card with half its GPU power
3. cost only 92.99 as seen on newegg!
4. will play all games listed at mid to high settings no problem.

 

[Guest]

if you want to sli with 2 nvidia cards then go with this budget PS that meets all specs of PS costing 4x as much and I have never had one fail me yet......

http://www.newegg.com/Product/Product.aspx?Item=N82E16817182185

 

[Deleted member 217926]

Try the new ATI 5850. Better than all the options you enumerated from both companies, both in performance, features and power saving.
If your PSU is from a good brand you will have no problem, but if it is from a no-name brand you should upgrade to Corsair, TT, Antec etc.(min 450W)

+1

 

[enayet_redeemer]

First of all please inform about supported highest resolution of your monitor.

If your monitor supports resolution 1680X1050 then I would recommend to go for Radeon 4850 or 4870 because these cards are able to deliver the exceptional performance on this resolution. If you busy higher-end card then it would be a waste of money. You have to buy a PSU of at least 500 Watts with one PCI-e 6-pin connector (for 4850), 550 Watts with at least one PCI-e 8-pin and one PCI-e 6-pin connector for 4870.

http://www.tomshardware.com/reviews/best-graphics-card,2404-3.html

If your monitor supports 1920X1200 then I would recommend to go for Radeon 5850 with at least 550 Watts of PSU with at least 2x6-pin PCI-e Connectors.

If you want a DirectX 11 card then Radeon5850 would be best buy.

PSUs should have 80+ ratings.