Trying to Drive 3 Monitors for work (no gaming)

Genes1986

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Jul 9, 2015
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Hello all, thank you in advance for any and all help/insights into my issue.

I have a Dell OptiPlex990 MiniTower, and I am trying to have 3 monitors connected to the computer and extend the workspace across all three (no mirroring). The computer currently had a Dell AMD ATI Radeon HD 6670 installed into one of it's two PCIe 2.0 slots. The 6670 has a displayport, vga and dvi ports, if I bought a displayport to hdmi active adapter would I be able to power all three displays or would I need to purchase a new card?

The power supply in the Optiplex 990 is a 250 watt unit so power is a concern if a new card is in fact needed. I did find a VisionTek 900358 Radeon HD 5450 card which is listed as only needing a 250 watt power supply, if I purchased this card would I be able to use the displayport and DVI on the dell amd 6670 and then the HDMI on the VisionTek 5450 to run all three monitors?

Again thanks for all of your help.