Best GPU Among These

[phoenix1313g]

1) PowerColor AMD/ATI HD 7750 1GB GDDR5

OR

2)Sapphire Radeon HD 7770 Overclock Edition 1GB Graphics Card

 

[Aeronautics]

of course the HD 7770, better card from the better manufacturer.

 

[Iain Gray]

Option 2 is the superior card. Sapphire have been known to be a great card manufacturer (not to the discredit of Powercolor, they still make quality chips) plus the HD 7770 is a more powerful card on it's own, regardless of manufacturer, by around 10-20%. The 'Overclocked' feature it offers would further increase it's power over the 7750 at stock as well. Both are relatively cheap, so I won't lecturer you on the best money saving card. They are both mid range cards, you'd best get the 7770 if it was a decision.

 

[phoenix1313g]

Option 2 is the superior card. Sapphire have been known to be a great card manufacturer (not to the discredit of Powercolor, they still make quality chips) plus the HD 7770 is a more powerful card on it's own, regardless of manufacturer, by around 10-20%. The 'Overclocked' feature it offers would further increase it's power over the 7750 at stock as well. Both are relatively cheap, so I won't lecturer you on the best money saving card. They are both mid range cards, you'd best get the 7770 if it was a decision.

What about this one?- Asus AMD/ATI HD 7770 Direct CU 1 GB GDDR5 Graphics Card
is this any better or should i go with sapphire only. my config is:
the mobo i have selected is - ASRock Z77 Pro 3 Motherboard
cpu - Intel 3.4 GHz LGA1155 Core i5 3570K Processor
psu - Corsair CMPSU-500CXV2UK 500 Watts PSU
and cabinet is corsair 300r,
which gpu would you suggest, and please speify as to why? if possible...
and do these both gpu support windows xp??
any other suggestion is welcomed... Thankx