- Joined
- Dec 24, 2015
- Messages
- 55
- Motherboard
- ASrock X99 Extreme4
- CPU
- i7-5820K
- Graphics
- GTX 960, R9 280X & RX 580
- Mac
- Classic Mac
- Mobile Phone
So the answer to this thread is yes, you can indeed have an NVIDIA GTX 960 and an AMD Radeon R9 280X in the same Mac.
I picked one up on eBay, like you said, put it in, and started it up right out of the box (after dealing with the surprise of needing *2* power cables). I have a separate HDMI cable running a separate monitor off it (because I suspected it wasn't using full acceleration for my task). So that works.
However, as noted in your AMD Radeon guide, it seems to recognize it as a Radeon HD 7XXX. I'm not sure that's a problem.
iStat Nano seems to show it ticking along at only half load and it's WAAAY slower than I expected given the FP64 benchmark and that this is a FP64 intensive application. "About this Mac" claims I have it in a PCIe x8 slot, but I'm skeptical.
Is there some trick I missed to get full acceleration with this card? I was expecting a 13x improvement over my NVIDIA, not a 2x (for this application).
I picked one up on eBay, like you said, put it in, and started it up right out of the box (after dealing with the surprise of needing *2* power cables). I have a separate HDMI cable running a separate monitor off it (because I suspected it wasn't using full acceleration for my task). So that works.
However, as noted in your AMD Radeon guide, it seems to recognize it as a Radeon HD 7XXX. I'm not sure that's a problem.
iStat Nano seems to show it ticking along at only half load and it's WAAAY slower than I expected given the FP64 benchmark and that this is a FP64 intensive application. "About this Mac" claims I have it in a PCIe x8 slot, but I'm skeptical.
Is there some trick I missed to get full acceleration with this card? I was expecting a 13x improvement over my NVIDIA, not a 2x (for this application).