buying GPU
#1
Sad 
I want to buy
SAPPHIRE HD6670 1GB GDDR5 PCI-E HDMI / DVI-D / VGA FULL

will it good for hash cracking ?
I am a n00b. Please help. My budget is too low.
#2
you will be very disappointed with the performance of that card. if you have a small budget, buy used.