Which one i choose ?

[Deepak_100]

Which is best graphic card for p5g41tmlx3 e5700 ? Saphhire 6770 DDR5 1gb or Nvdia 460 gtx DDR5 1gb

 

[geofelt]

Both perform equally. All else equal, buy the cheaper.
If your psu has only one 6 pin connector, the 6770 will be supported, a GTX460 needs two.

 

[Deepak_100]

Zebronic Zeb 450 watt dsata economic series 20 +4 pins PSU :/

 

[geofelt]

My guess is that your psu is of poor quality and should be replaced.
If it does not include a 6 pin pcie power adapter needed by the 6670, it does not have the extra power to let you use adapters.
Likely, the best card you could use would be a GTX750. which is stronger anyway.
The danger with a cheap psu is not that it does not have the power(and cheap units do not deliver power on the +12v rails where today's cpu and graphics cards need it) The danger is if the psu fails under high load, it will not have the protective circuitry to protect your other parts from damage.

A $15 psu can not be any good at all.