Confision

I have 240$ and want to buy a graphics card.
I am looking for nvidia GTX 260 but i think it is overpriced.
So, any one help me what should i buy...
I have Q8200, 3GB, DG43NB. Also tell me the PSU needed...
Answer quick because i have only 10 hours to decide.

For 240, assuming your PSU is probably gonna need replacement, and also assuming you are in the USA:

430w Antec Earthwatts $50 free shipping:
http://www.newegg.com/Product/Prod [...] -_-Product

XFX ATI 5770 160 + $8 shipping:
http://www.newegg.com/Product/Prod [...] -_-Product

260 is old tech. You currently pay higher prices for old Nvidia tech (DX10) than competitive DX11 cards from ATI. If this was my $240, this is how I would spend it, and have a few bucks left over for a case of beer and some cheetos.

i currently have 400watt PSU

and think 5770 is not the way i want, i want to play games at 1080p.

can you tell me the card better then that?

5770 performs well at 1080p. List your PSU brand, model, and amps on the +12v lines as listed on the side of the unit. I wouldn't trust a cheap unbranded 400w PSU to run a 5770, to be honest, nevermind a 5830, which pulls more power than a 5850 due to being a cutaway 5870.

If your PSU is a good trusted brand, I would still be wary about running a 5830 off of it. A quality 450w unit is the least I could recommend with a good conscience.

All Discussion says that I should buy 5770...
Is there any competing card of nvidia??
and whats the PSU upgrade required??
I am buying it today

Thanks for that Timop. I've been looking for that info for days.

Cheers

currently there is no real competing car from nvidia in that price range, nvidia's lowest end gpu on the new fermi architecture which is dx 11, is the 465 which is terrible and starts at 280ish

5770 is really in a sweet spot that's hard to deny by anyone. if your asking why you most likely need a new PSU, if anything the 12v rail will probably be somewhat weak on a low watt psu like that reserving most of it's 400 whats for the 3 and 5 volts for the cpu ram, mobo ect.

if your asking which psu is required, the earthwatt 430watt has already been suggested by jofaMang

Source please. I would be greatly interested in having a link to that information in my bookmarks.

From my understanding, PCI-E x16 2.0 is twice the bandwidth as 1.0.

Is not a PCI-E x16 2.0 twice the bandwidth of PCI-E x16 2.0 running 8 lanes (x8)?

THUS, the difference between PCI-E x16 2.0 and 1.0 should be exactly the same as the difference between x16 and x8. Many tests have shown that only the very strongest cards (5870 and up) show a performance penalty from running on x8 when compared to x16.

Someone correct me if I am wrong, please. Otherwise I have to assume Timop pulled that 10% figure out of his rectum. I would be nothing but thankful to be proven wrong on this assumption.

Well, this might help:
http://en.wikipedia.org/wiki/PCI_Express

The main difference appears to be transfer rates, from 2.5GT/s to 5.0GT/s from 1.0 to 2.0. 1.1 utilizes the features of 2.0, with the gigatransfer per second rate of 1.0. If 1.0 to 2.0 = double transfer rates, and x8 to x16 = double PCI lanes available for transfer, and if PCI lanes scale perfectly the available transfer rates, then the the difference between X16 1.0 to 2.0 is the same as 2.0 x16 to 2.0 x8. Using this logic, we can directly compare the orginal question (limitation of PCI-e 1.0) to available date on video cards that run in x8 2.0 slots, which is known to be almost insignificant on cards below 5870 levels of power.

Thats what I meant, i think. o.0