Hello,
I recently bought a Dell OptiPlex 7020 from my College Surplus Store. I had 2 older GPU's laying around (ASUS AMD HD 7770 1GB) and decided to try and run them in crossfire in a new case. Upon hooking everything up initially the computer wouldn't recognize either one of the GPU's no matter if I only had one at a time or both in. I did verify they were both working when I removed them from my current setup. When I initially put everything together only the integrated graphics were recognized and worked and after attempting to figure it out until 3 am, I shut the computer down. The next morning the integrated graphics no longer output a signal and the graphics cards seem to maybe just output a black screen as my monitor doesn't show that it isn't receiving a signal. I am still using the original 290W PSU but have a 600W on the way. These cards are rather small and I believe they only have an 80W TDP, but I'm using a SATA power adapter to give them the full range of power. I don't really know what's wrong. The PCI-E Slots look fine. I don't know if I'm just not providing enough power or not. When I turn on the PC both graphics cards and the CPU fans all spin up and if left on they do warm up so I'm not sure what the issue is. I could use some help from someone who has some more experience than me.
I recently bought a Dell OptiPlex 7020 from my College Surplus Store. I had 2 older GPU's laying around (ASUS AMD HD 7770 1GB) and decided to try and run them in crossfire in a new case. Upon hooking everything up initially the computer wouldn't recognize either one of the GPU's no matter if I only had one at a time or both in. I did verify they were both working when I removed them from my current setup. When I initially put everything together only the integrated graphics were recognized and worked and after attempting to figure it out until 3 am, I shut the computer down. The next morning the integrated graphics no longer output a signal and the graphics cards seem to maybe just output a black screen as my monitor doesn't show that it isn't receiving a signal. I am still using the original 290W PSU but have a 600W on the way. These cards are rather small and I believe they only have an 80W TDP, but I'm using a SATA power adapter to give them the full range of power. I don't really know what's wrong. The PCI-E Slots look fine. I don't know if I'm just not providing enough power or not. When I turn on the PC both graphics cards and the CPU fans all spin up and if left on they do warm up so I'm not sure what the issue is. I could use some help from someone who has some more experience than me.
