Windows 7: Upgrading to a newer Card

Newegg.com - Refurbished: MSI R5450-MD512H-CO-R Radeon HD 5450 512MB DDR3 PCI Express 2.1 x16 HDCP Ready Video Card

On a strict budget. I currently have an Radeon HD 4200 Integrated. Is this a good step up? Just looking for something better than my current one. I'm not trying to run Crysis on Max or anything. Maybe WoW on better than Low



or this

http://www.newegg.com/Product/Produc...82E16814131339

hi this is a good deal if you can stretch to $40 Newegg.com - XFX HD-645X-YNH2 Radeon HD 6450 512MB 32-bit DDR3 PCI Express 2.1 x16 HDCP Ready Low Profile Ready Video Card XFX HD-645X-YNH2 Radeon HD 6450

Would I need to buy a new PSU? I'm running stock

have a read here http://goo.gl/k0S8O XFX HD-645X-YNH2

if you do choose the XFX HD-645X-YNH2 be sure to download the ccc (catalyst control center) for the card you can run a program that automatically detects the driver software here >>> AMD Driver Autodetect its from amd website >>> AMD Support & Drivers do this after you have fitted the card in then booted up to the desktop.

Generally, PSU requirements for video cards are way overstated.
For example, Tom's Hardware FurMark load power draw tests for the 5450 drew 118W TOTAL SYSTEM DRAW running an I5 2500k overclocked to 4.0Ghz including 4GB ram.
The 6450 drew 135W under the same conditions. Idle card power draw is 25W or less for both cards.
It appears your "stock" power supply is 300W. I would consider the age of your system and the fact that HP, in general, does not use 80+ rated power supplies on your decision whether or not to upgrade your PS. I would not hesitate to replace
a PS over three years old.
If in doubt, save up a few dollars and get a 400W, 80+ Bronze PS from a major manufacturer. They are cheap insurance to a well running computer.

Newegg.com - COOLER MASTER eXtreme Power Plus RS500-PCARD3-US 500W ATX12V v2.3 Power Supply

Would that be any good? Cooler Master eXreme 500w

thats a good one easy to fit and guess what im using it for one of my rigs and it runs a vid card 4 drives and 4 fans plus the mb

I don't know what any of that means lol.

the same psu that you asked about i am using. my computer is running a graphics card 4 hard drives 4 cooling fans plus the power to the motherboard so yes i think it will run your computer ok