- Joined
- Mar 14, 2014
- Messages
- 740
- Motherboard
- Z97X-UD5H
- CPU
- i7-4790K
- Graphics
- 2 x R9 280X
- Mac
Thank you Rob for your reply!
I'm using multibeast. My 280X (both 3GB and 6GB) lead to garbled text if I disable integrated graphics. I can boot with both of them just fine and use the system If I have integrated graphics enabled and have IGFX set as boot gpu. With my 280X plugged in it's black until I get to the login page and then the computer switches over the the 280X from integrated graphics.
The 280X 3GB shows up at 7xxx 3GB and everything works great. The 6GB shows up as 7xxx 6GB and everything works other than OpenCL applications such as FCX.
I followed the guide to create a EFI partition but didn't see any diffrence. Maybe I didn't do it correctly, I am currently downloading El Capitan to try that. I asked you on the other thread if you're using Clover or the updated multi-beast for El Capitan. Do you have your IGFX disabled for your setup that gets 11 seconds Bruce X?
My 2x 3GB 280X's are XFX and the 6GB is a MSI. If Sapphire has better results I would not mind purchasing Saphire cards and sending these 2 back to Amazon.
Thank you so much for you time replying to me and helping others. I REALLY appreciate it!
I use Clover and it just worked. Never configured a thing in Clover to date, never even opened it up to look at the options. I had a lot of issues with Multibeast with a Gigabyte Z97X and a Gigabyte Z87X but Clover was easy. After saying that I never had garbled text with my 280X.
I have the IGFX disabled as that is the only way to get FCPX to work properly. if the IGFX is enabled FCPX *may* or *may* not choose to use the internal graphics card over your far faster 280X. If you want to use FCPX you have to disable the internal graphics.
The EFI partition mod is to enable booting with the 280X cards. AFAIK it has nothing to do with the garbled text. Its pretty simple as a mod, a lot easier than installed Yosemite and if you can boot afterwards without the USB key its working.
Your next problem is that you have two mismatched 280X cards. I do not know but strongly suspect that you cannot combine the XFX and the MSI cards in FCPX to get faster speed. AFAIK they have to be identical. I have read of lots of niggles with the XFX card and the MSI card, but since I have not used the cards I can't say there are problems. When I was looking to buy my cards, my research showed too many niggles with MSI and XFX so I went with Sapphire.
I can state that the Sapphire card I use here in the UK works out of the box, the only config flag I used to install Yosemite was --maxmem=8192 for the motherboard. I installed with the dual 280X's in place and with the internal graphics turned off on the motherboard. El Capitan was an in-place upgrade.
My personal suggestion is to send both the cards back and get two Sapphire cards instead. I don't do much 4K footage so can't comment on maxing VRAM memory out. I did a test for somebody a few weeks ago which was 4K and never noticed any problems but there wasn't a lot happening in his clip. If you send me via dropbox or similar some 4K footage as an FCPX project, I'll load it and render it and see what it looks like.
And in answer to your next question, my dual 280X Sapphire cards are
Vapor-X R9 280X 3G GDDR5 PCI-E DVI-O/DVI-D/HDMI/DP TRI-X OC WITH BOOST (UEFI)
SKU 11221-12-20G
These are UK models and I know are no longer made, but there are more recent alternatives. I'd get the same model but the updated version. Mine run very quiet and am very happy with them. I drive two HD monitors from one and a single monitor from another. I'd run four HD monitors but simply do not have the desk space.
Rob