I want to know if the Power supply and the graphics card will fit in my computer, and if they work together (if they are compatible together)
and i want to know if the processor that i want will work with the graphics card. are they compatible each other?
the processor is AMD, and the graphics card is from GeForce Nvidia.
I heard from this guy, that it will work, and i saw an answer from yahoo answers, and he said it wont work.
I want to know if it really works or not, because im planning to buy them, and play battlefield 3.
Thank you, and if you know a better, cheaper processor, graphics card and a power supply, that can run battlefield 3 in ultra or high, please tell me.
and please tell me if the power supply is needed for the graphics card, and if i need to buy the power supply.
Looks like a good upgrade path. The power supply you listed should physically fit within the case without issue. The system you're upgrading is new enough so that there shouldn't be any compatibility issues with the power supply and the motherboard. Yes, you should upgrade your power supply if you intend to install a graphics card.
As to whether the graphics card you opt for will physically fit, I can't say. It's probably best to measure how much space is available at the PCI-Ex16 slot and make sure whatever graphics card you get is smaller.
There won't be any issues with running an AMD processor with an NVidia graphics card.
Sorry man, but I wouldn't recommend doing that upgrade to that PC. The Power supply might fit and should support 670/660 Ti with x4 955 BE fine (although I would recommend Corsair 600W instead), but The Motherboard only support up to 95W TDP Processors so a x4 955 is not supported as it's TDP is 125W. As for the graphics card, because HP likes to have small cases, a 670/660 Ti will probably not going to fit inside the computer.
But I'm going to answer your questions anyway.
Yes the AMD processor will work with the nvidia card. That Yahoo guy doesn't know anything really .
When 660 Ti comes out, you can straight buy it because it is as fast as 670 but cheaper. The prices of the 670 will not be affected by the 660 Ti launch. nvidia will only change the 670 price when AMD decide to put their 7970 into the $400 mark.
So my advise would be, get a new case and a new motherboard too so It would support the Processor and the Graphics card. Maybe that costs you about $150-$100. You can drop down the GPU to a 7870 or a 7850 (I know that would drop the performance compared to the 670, but that's OK because you won't have to pay extra $150-$100). The new case and the new motherboard I recommend is: