PCI, PCIe and AGP. Which one of these is recommended? What do you use?

syntheticpop

PCI, PCIe and AGP. Which one of these is recommended?

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The only reason why you might buy an AGP or PCI graphics card would be to restore an old PC, i.e. one that is 8 or more years old.  PCI-e is the only option nowadays.

To add, PCIeX16 is the current video card standard. Most are dual slot types (take up two slots on the back panel).  Many video cards also require a higher wattage rated power supply and also require a PCIe power connection from the PC's power supply.

ati 5450 pcie

 A mistake I made on a recent build was to choose an Nvidia 210, nothing wrong with the graphics for a DAW but there were several devices on that board that were for HD audio. Not sure if it would be the case for all systems, but it caused serious issues with my ASIO driver. You might want to avoid getting a card with audio capabilities.

I don't have a problem with my Geforce (Nvidia) 440 card. It has HD audio put on by the latest drivers I think, and they are listed separately from anything else in Device Manager.

Not sure if it would be the case for all systems, but it caused serious issues with my ASIO driver. You might want to avoid getting a card with audio capabilities.

 
FWIW, You can disable the video card's HD Audio section in Device Manager. 

Tried that and for some reason device mgr would freeze for some reason on restart it would reload the drivers. May have something to do with my powercore card.  For some reason the powercore card would not boot up while I was tinkering with that device. In any case it was resolved with an Nvidia 7950 GX2.
I've been building PC's for about 15 years but have always had problems with Nvidia's entry level cards. I still prefer Nvidia for myself because I use their 3D stereoscopic driver, but for friends and family that are fine with an entry level to mid grade graphics card, I've had much better luck with ATI.

Get a video card with the fan big enough (mine is still quiet relatively compared to other things) and the heat sink does not separate from the GPU (graphics processing unit) after awhile because the grease (dielectric whatever it is stuff) kind of is not there anymore due to the heat, which leaves a certain third party manufacturer using the Geforce (Nvidia) chips left out now - forever.

Ah, the heat would make the graphics card quit working taxing it a little beyond normal slow computer programs (and not even close up to FPS computer games which I do not play anyway). (thought about fixing the old one with new grease, but I think the damage had already been done.)