3 Monitors with a Radeon HD 6450 and Motherboard

[austin148]

Hi, I recently realized I am not able to run 3 monitors using only the Radeon HD 6450. The Radeon HD 6450 claims to need a 300 Watt power supply, but I currently only have a 240 Watt power supply. What are my options for getting 3 monitors working? I tried to run two of the monitors from the Radeon card and the third monitor from the motherboard but the third monitor is not working. Why is this?

 

[cin19]

Which cpu/MB do you have? Only the cpu or MB has iGPU, then you can get the display signal from the iGPU, otherwise you can't.

 

[austin148]

Which cpu/MB do you have? Only the cpu or MB has iGPU, then you can get the display signal from the iGPU, otherwise you can't.

I have a Dell OptiPlex 990 motherboard.

 

[cin19]

Then go to intel or dell site to download and install the intel graphics driver. After that you should be able to use the 3rd monitor with intel iGPU. And make sure go into BIOS, enable the iGPU too. Check the manual to see how to.
Intel site https://downloadcenter.intel.com/