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HP Power Supply, case, and graphics card.?

Hi. I am new to computer hardware although not to computers in general. I have an HP Pavilion model p6610f with an Windows 7 OS. I need to get a larger power supply for a graphics card I bought for it which requires at least 400W. The computer has only 250W. My computer has NO upgraded parts added to it. I have 3 questions regarding this. 1. What is the brand, name, and model of the power supply an HP Pavilion comes with? 2. Is the case of this computer a regular size or a small type? (I need to know so I'll know what size power supply to fit in the computer.) 3. The graphics card I bought is an ATI Radeon R5570-MD1G (aka ATI Radeon HD 5570). Will this graphics card be compatible my HP Pavilion if I upgrade my power supply? Thanks.

Public Comments

1. the ATI Radeon HD 5570 can be powered with the existing 250W psu, no new psu needed (the 400W psu is nothing else than a marketing gimmick). edit i just did a power consumption calculation for your entire computer including the new graphics card HD 5570 and it turned out that the total consumption will not exceed 210W. edit the troll was here - again