i just bought a pc from packardbell. quad core 2.3 GHZ. 4g ram and Geforce g100. runing window 7 RC and it is pretty bad at gameing. it has low framrate at devil may cry 4 at low. so i was going to buy a grahic card. having done a bit of reaseach i was confused like nividia rebranding, how higher number doesnt mean better and power suplyy etc. and i dont know which is the best, and compatible. so please help me choose a grahic card. my buget is around £100 or below. oh and does it matter if is it from pny or bfg etc?
One of the biggest limits on your graphic card is the power available from your power supply. To get a more powerful graphic card you'd probably have to upgrade your power supply also. XP wouldn't make an appreciable difference on speed.
shut down your computer, unplug it, remove your side panel, find your power supply. There will be a sticker on it that lets you know what it's rated at, look at the connectors, is there a 6 pin pcie plug? Blow the dust out while you're in there.
maybe u should change your PSU.i think it is better to run the card with its recommended power as mentioned by the manufacturer. i don't think that your psu will explode but in return your pc might not boot up when u install those card into your pc.anyway check this:
i'm not really sure how big the difference between the two but many people recommending 4770. u can check reviews and benchmark if u are interested. as for your second question have u read tom's best graphic card for month yet? at the end of the article lies the answers for your question.