I can see, for example the boot screen and play some games like Bioshock, but this weird value for VRAM concerns me.Also, after some hours playing a game, the screen freezes and the system restarts.
With this in mind, I want to ask: - Anyone here is having similar issues - Is there anything that I can do Thanks. ![]() Now I can see the correct amount of memory even when not using the EFI BIOS. I have no idea why two different model numbers would be used for apparently the same card(s). Amd Radeon R9 280X 3Gb Video Card For Apple Pro Drivers Are WrittenDo you have a link to a picture of the card I ask because some versions of the card would match the original reference design and that would be the design for which Apples drivers are written and for which the pre-built Mac 7950 firmware is intended. There are two approaches to flashing a PC version of this card, one is to use a firmware image someone else built for a standard i.e. Amd Radeon R9 280X 3Gb Video Card For Apple Pro Code To TheHD 7950 (or presumably R9 280) or to use the additional tools to build one specifically for your card by appending the Mac EFI code to the standard non-EFI PC firmware. Note: If you dont have a reference design card this may mean at a minimum one or more connectors do not work on the card however reports seem to indicate that otherwise the card will work. For example reference designs only have a single DVI connection and many non-reference designs have two. As you obviously know and I can now see it has two DVI ports so does not count as a reference design. As a comparison the following is a standard i.e. HD 7950 - 2C3974langeng The following is also a HD 7950 but looks more like yours but does have the same reference mix of connectors i.e. DVI. F5B115langeng Did you build your own firmware or just use someone elses Normally according to reports I have seen the only consequence of a non-reference design is that the second DVI ports just does not work but everything else does. I have not seen reports of VRAM errors like yours but did you also do the hardware mod to fix the PCIe speed in a Mac See -ati-card-and-nvidia-card.1547340 You can look under PCI in System Profiler to see if the Mac is recognising your card as 5GTs or 2.5GTs. I got mine from Sapphires support only to make sure that I was using the correct one. Apple may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in the conversations captured in an electronic forum and Apple can therefore provide no guarantee as to the efficacy of any proposed solutions on the community forums. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the.
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