- Joined
- Aug 26, 2016
- Messages
- 47
- Motherboard
- Intel S2600CP2J
- CPU
- 2 x Intel Xeon E5-2670
- Graphics
- AMD Radeon HD7970 GHz Edition
- Mac
- Mobile Phone
Hey guys
So after struggling to get the black screen issue in Sierra (despite having a Mac Pro 5,1 definition) upon boot, I decided to install El Capitan on my Hac Pro:
2 * Intel Xeon E5 2670
Intel S2600CP2J motherboard
8 * 8GB Hynix DDR3-1866 RAM
ATI Radeon R9 290X
First things first: it worked!! I was so incredibly relieved and happy to see it finally boot into the El Capitan home screen!
There are a couple issues though:
1. The system only seems to see 32GB of RAM of my total 64GB installed. It's possible that OS X is only reading 4 DIMM slots per CPU, or all 8 DIMM slots for only CPU1 or CPU2 (doubtful, as I assume this would cause all sorts of issues). If it's the former rather than the latter, then I'm unsure if the CPU and RAM are operating in quad channel mode. Most likely they're operating in dual channel mode, correct?
Any ideas to work around this issue so that all 16 DIMM slots are enabled? Or, just as good, allocate the 8 DIMM slots that OS X is reading to the 8 DIMM slots which actually have the RAM sticks installed so that the system can run in quad channel mode?
2. Any general advice on what to do from here? Is signing into iCloud a good idea? Also, if I want to make the move to Sierra eventually, should I try renaming my GPU from GFX0 to GFX1 as outlined in this guide here:
https://www.tonymacx86.com/threads/...-imac-15-or-imac-17-system-definition.183113/
3. Any advice on things like CPU C/low power states?
Many thanks once again!
So after struggling to get the black screen issue in Sierra (despite having a Mac Pro 5,1 definition) upon boot, I decided to install El Capitan on my Hac Pro:
2 * Intel Xeon E5 2670
Intel S2600CP2J motherboard
8 * 8GB Hynix DDR3-1866 RAM
ATI Radeon R9 290X
First things first: it worked!! I was so incredibly relieved and happy to see it finally boot into the El Capitan home screen!
There are a couple issues though:
1. The system only seems to see 32GB of RAM of my total 64GB installed. It's possible that OS X is only reading 4 DIMM slots per CPU, or all 8 DIMM slots for only CPU1 or CPU2 (doubtful, as I assume this would cause all sorts of issues). If it's the former rather than the latter, then I'm unsure if the CPU and RAM are operating in quad channel mode. Most likely they're operating in dual channel mode, correct?
Any ideas to work around this issue so that all 16 DIMM slots are enabled? Or, just as good, allocate the 8 DIMM slots that OS X is reading to the 8 DIMM slots which actually have the RAM sticks installed so that the system can run in quad channel mode?
2. Any general advice on what to do from here? Is signing into iCloud a good idea? Also, if I want to make the move to Sierra eventually, should I try renaming my GPU from GFX0 to GFX1 as outlined in this guide here:
https://www.tonymacx86.com/threads/...-imac-15-or-imac-17-system-definition.183113/
3. Any advice on things like CPU C/low power states?
Many thanks once again!