It is often hard to fit an after market motherboard into dell computers, you would have to check the dell website.
The Dell Optiplex GX620 SFF uses an F8101/0F8101 type motherboard.
Unfortuntely, the Dell motherboard form factors are propietary, so you'll have to buy replacement motherboards directly from dell.
T5600 Motherboard
The Dell XPS 400 series uses a BTX format motherboard. A BTX motherboard measures approximately 325 by 266 milimeters.
If your warranty is still available for your laptop, you can send it back to Dell for a website. Alternatively, you can buy a new motherboard from Dell's official website.
Power supply or motherboard is bad.
by blowing me
I'm sorry about the death of your computer's motherboard. You can find a replacement on ebay.com, amazon.com or even Dell's website. Good luck on finding a replacement!
$200
Yes, you can. Just make sure that you have a right kind.
Do not buy Dell anymore. for more info see.