I'm a casual gamer (not looking to play games like Crysis or anything that really graphically demanding) looking to add a graphics card to my computer. I'm probably not going to overclock or run Crossfire.
Budget: Prefer to spend less than $80 after rebate, but if there is something really good, max budget would be $130
-Phenom X4 9550 2.2GHZ
-ASUS M4A785M Motherboard (Integrated GPU ATI HD 4200)
-6GB DDR2 RAM
-300W PSU (may be upgraded to a 480W supply soon) without the extra graphics card power connector
-Monitor's max resolution: 1280x1024
I've heard that the 5670 maybe be the best one for a budget one, but I sort of want to be able to run some games on moderate to high settings. The games I have in mind are L4D2, and Portal 2 (these are the only games I have at the moment). I heard that the 5770 will last me a while, but I don't know if its overkill for these games or not.
Any suggestions would be really nice.
And on a side note, I heard that the 5670 is not powerful enough to handle 1GB vs 512MB GDDR3/GDDR5, so I don't know which one I should get (since there are a bunch of variations of 512MB/1GB/GDDR3/GDDR5 on Newegg).
5670 will let you play both of those games at high-max settings at your resolution. It also complements the rest of your system well. anything more would be a waste unless you were also looking to upgrade your cpu.
512 vs 1 GB should not matter for you. GDDR5 is significantly faster than GDDR3.
You will see a huge increase in performance with this card over your old integrated 4200.
So after a bit more research, I found that the 4850 is considerably faster. But I'll have to get another PSU since it requires a PCI-E power connector. But there is again the problem of the CPU bottlenecking since I've found that the Phenom x4 9550 is kind of a lower-end quad core, so I don't know.
Should I stick with a 5670 or get a 4850 for about the same as the 5670.?
[Some of the places I've found the 4850 are on eBay an Amazon since it appears to be discontinued]
I think I would go with the 5670 if you are only interested in light gaming, it will more than suit your needs. You won`t need to replace your PSU and you will save a bit on electricity. So really, the 5670 is cheaper for you. trust me you will be satsified with it at your resolution.
If you want to get a more powerful system, I would suggest replacing your CPU+PSU+GPU. But then you would be going over budget.