Hi, I hope someone can help me. I have a new Dell XPS 8500 PC. It comes with only a 460w power supply. I got it stock with the i7 chip, 16 GB of ram, 2 hard drives and the AMD 7770 2 GB graphics card. I have kept it stock and added nothing. From day one I have gotten "display driver stopped working" errors. The screen will either go black for about 15 seconds and come back or stay black and force an inopportune reboot. This happens between 2 and 50 times a day. It produces event type 4101, source=display entries in the Windows System event log. and the text is:" Display driver amdkmdap stopped responding and has successfully recovered".
I, and others who have the Dell 8500 with the AMD 7770 2 GB card, suspected the low watt Dell 460w power supply. Dell assured me and the others it was "fine". I asked AMD engineering about this and the exact response I got 2 days ago was:
Response from AMD:
"I believe this is a power issue related to your Dell 8500 XPS computer. The card you have install is a HD 7770 2GB graphics card which requires at least 550 to 600 watts of power. The HD 7770 1GB version requires 500 watts but should be able to run on a system with 460 watts.
The more memory a card has, more power it will need. Normally graphics cards installed in Dell computers do require a bit less power than the retail version as the card are specified to work in there systems with smaller power supplies. You have the 2GB version which does require more power than the 1GB version.
I would recommend that you upgrade your power supply to at least 600 watts for great compatibility and future upgrades.
It seems from the data I have seen on Tom's that the AMD 7770 1GB uses 90 or so watts. What might the 2 GB version need, I haven't been able to see a figure anywhere? And how does that relate to the total of 460w in the Dell power supply? How likely is it that the Dell 460w supply is truly inadequate for this card, especially with what else came in the PC?
Thanks for any help anyone can give me - Doug Miller
I, and others who have the Dell 8500 with the AMD 7770 2 GB card, suspected the low watt Dell 460w power supply. Dell assured me and the others it was "fine". I asked AMD engineering about this and the exact response I got 2 days ago was:
Response from AMD:
"I believe this is a power issue related to your Dell 8500 XPS computer. The card you have install is a HD 7770 2GB graphics card which requires at least 550 to 600 watts of power. The HD 7770 1GB version requires 500 watts but should be able to run on a system with 460 watts.
The more memory a card has, more power it will need. Normally graphics cards installed in Dell computers do require a bit less power than the retail version as the card are specified to work in there systems with smaller power supplies. You have the 2GB version which does require more power than the 1GB version.
I would recommend that you upgrade your power supply to at least 600 watts for great compatibility and future upgrades.
It seems from the data I have seen on Tom's that the AMD 7770 1GB uses 90 or so watts. What might the 2 GB version need, I haven't been able to see a figure anywhere? And how does that relate to the total of 460w in the Dell power supply? How likely is it that the Dell 460w supply is truly inadequate for this card, especially with what else came in the PC?
Thanks for any help anyone can give me - Doug Miller