Originally Posted by
Harry
Sound cards, not really. The onboard sound from the motherboards these days is more than enough unless you're an audiophile, which if you were then you've have your own external sound card/dac & whatever else.
Wireless adapter, depends. If you have no way to plug an ethernet cable into your motherboard and it doesn't support wireless, then you should buy a wireless card. My old motherboard doesn't have a wireless adapter so i had to add one in for my brother when I gave him my old system, I use ethernet so it's all good for me, though my current motherboard also doesn't have a wireless adapter built in.
For the price, if you have money to waste then sure, go ahead and spend the extra money. If you're trying to spend as little as possible, then don't bother unless you can't get ethernet to the pc or the motherboard doesn't have wireless capabilities.