Many newcomers to the forums ask "Can X run dolphin?" and most are told that some games will run but the only option they have to get full speed on every game is to build their own pc. Everyone on the forum recommends an i5-3570k with a gpu that can get atleast 3xIR. That will get you full speed performance, but for people that don't have a lot of money to put down and need some base rigs that can give decent performance here are some parts. I plan to expand onto this a lot more when I have more time to, but for now I hope it helps newcomers with a cheap baseline build for dolphin. Also, anyone is free to criticize and throw in better parts. I only had 30 minutes to work on this today so I probably missed a few deals.
$300 Rig
Pentium 2020 CPU $65
NZXT Source 210 Case $35
Cooler Master Elite 460 PSU $40
4 GIGS GSkill Value Series RAM $30
Asrock Motherboard $50
Sapphire Radeon HD 6670 DDR3 GPU $65
Toshiba HD 500Gb $50
Total $335
The case and GPU both have mail-in rebates that are worth $30 in total so the cost of this rig in all in $320 which isn't too high over. With this rig you're still getting a category(for more information head here) 2 cpu with a low-mid tier GPU that can play most games in 2xIR. It is by no means a gaming beast, but it can get the job done.
Edit: Swapped some parts. The rig is now at $305 with rebates.
$300 Rig
Pentium 2020 CPU $65
NZXT Source 210 Case $35
Cooler Master Elite 460 PSU $40
4 GIGS GSkill Value Series RAM $30
Asrock Motherboard $50
Sapphire Radeon HD 6670 DDR3 GPU $65
Toshiba HD 500Gb $50
Total $335
The case and GPU both have mail-in rebates that are worth $30 in total so the cost of this rig in all in $320 which isn't too high over. With this rig you're still getting a category(for more information head here) 2 cpu with a low-mid tier GPU that can play most games in 2xIR. It is by no means a gaming beast, but it can get the job done.
Edit: Swapped some parts. The rig is now at $305 with rebates.