Can you show me a desktop computer that can run pcsx2 at fullspeed that is in bestbuy ?

Please check http://www.bestbuy.com/ and tell me which desktop that can run pcsx2 at full speed, THANKS duDes!

none of them, since it's entirely game dependant.
but this one should give you good results for most games : http://www.bestbuy.com/site/Alienware+-+...&cp=1&lp=7

PCSX2 is a complex system and it's not so user-friendly in some of its parts. You must have some basic computer knowledge to be able to set it up correctly.To make PCSX2 Run Faster on a Computer follow these steps:
1. Check your computer's specifications. PCSX2 is powerful software and needs equally powerful hardware to perform adequately. If your processor, memory or graphics card is not up to spec, you can't do much to make PCSX2 run faster other than upgrade your system or buy a new computer.

2. Lower the resolution. This setting determines how much detail you can see while playing, but a higher resolution requires more system resources and can make PCSX2 much slower. To lower the resolution, select "Plugin/BIOS Selector" in the Config menu. In the Plugins tab, click on the "Configure" button next to the GS dropdown and change the resolution setting. For the GSdx plugin, you can find this setting under "D3D Internal Res."

3. Disable the debugging window. PCSX2 runs a hidden window to help you track down bugs, but it is mostly for advanced users and can slow down the emulator. To disable it, deselect the check box "Enable Console" in the Misc menu.

4. Use frame-limiting. Frame speed has a significant impact on performance. Limiting it might speed up performance, but gameplay might appear choppy. To get to the frame-limiting options, go to "Emulation Settings" in the Config menu and click on the GS tab.

5. Free up memory. If the other steps haven't given you much of a boost and your computer is up to spec, check whether your system is too busy with other processes. Click "Start," choose "Run" and type in "msconfig." Under the Services tab, you can see all currently running processes. Try disabling nonessential processes such as antivirus software while running PCSX2.