Noise levels ok?Well Squuiid, You probably dont want to hear it from me but.... I put this aux PSU in my box four years ago and have never had to deal with it since. It just works. Not the same brand but identical specs.
Noise levels ok?
Thanks. Might be worth a shot then.yes sir. i cant hear it at all. but i have to add, i'm kinda old and i don't hear too well as it is.
Definitely not a power issue. 1070 is easily powered by 2xmini 6pin to 1x 8pin which is what I used. My 1080 which demands more power works perfectly in Windows powered the same way in my other cMP.Squiiid you have had problems with your Pascal cards. Dr stealth appears to not have any issues.
I'm just throwing this out there but could this hypothetically be a pcie power availability issue?
Honestly, I think it comes down to some people being more fussy than others. I will not tolerate one minute of lag when I resume from sleep, or the occasional black screen, etc. Others will just overlook this and move on, it won't bother them.
I'm interested in the GTX980ti aswell, but I hear different stories about it. What kind of a system do you have?GTX 980 Ti kicks ass in my system. Not had any problems with it. Only complaint is I can't get same day OS updates, but nVidia are very good at speedy web and CUDA driver releases, usually within a day or two.
I'm interested in the GTX980ti aswell, but I hear different stories about it. What kind of a system do you have?
GTX 980 TI, as GTX 780 and R9 280X, is using about 250W so it's fairly safe to use only 6 pin connectors from the board. The main thing is not letting gpu to pull majority of it's power from 8 pin connection.How are you powering it? I'm assuming you're splicing the 8-pin to the two main board mini 6-pin connectors, and then using something else (sata power, optimal bay cable, etc) to power the 6-port?
What are people's experiences with this thing? This review utterly destroys it:
https://m.hardocp.com/article/2011/01/24/epower_juice_box_450w_auxiliary_power_supply_review/9
Thanks. Might be worth a shot then.
That's one hell of a cMP you have there. Very, very nice!
GTX 980 TI, as GTX 780 and R9 280X, is using about 250W so it's fairly safe to use only 6 pin connectors from the board. The main thing is not letting gpu to pull majority of it's power from 8 pin connection.
So the safest way is to join current before it reaches GPU, either by connecting it from two 6 pins from motherboard to 8 pin and then from 8 pin to 6 and 8 pin to GPU, or with a soldered jumper on GPU connections.
P.S. All this is assuming that GPU doesn't have same crazy factory overclock.
I'm planning to get this GTX980, but I hear different stories about it. Theophany (in this thread) have a 980 that works perfectly, but you had a bad experience with it. What was the biggest issue with the GTX980ti for you? Could it be that he's got a 4.1 flashed to 5.1 with only one CPU while you got 5.1 with two CPU's?Definitely not a power issue. 1070 is easily powered by 2xmini 6pin to 1x 8pin which is what I used. My 1080 which demands more power works perfectly in Windows powered the same way in my other cMP.
Honestly, I think it comes down to some people being more fussy than others. I will not tolerate one minute of lag when I resume from sleep, or the occasional black screen, etc. Others will just overlook this and move on, it won't bother them.
As I said, once I removed the 1070 and uninstalled the NVIDIA web driver, then reinstalled the GTX 680, the cMP literally works PERFECTLY. Everything is smooth and bug free. This is how things should be.
I believe the Pascal drivers are not mature, or even developed that much, and NVIDIA don't have a great incentive to put a lot of time and effort into them. Pascal performance in macOS is mediocre compared to what it is in Windows and I don't see that changing anytime soon. Nor do I see them fixing the bugs either. A shame really.
I think you've quoted the wrong person. I don't have a 980 nor do I have dual CPUs.I'm planning to get this GTX980, but I hear different stories about it. Theophany (in this thread) have a 980 that works perfectly, but you had a bad experience with it. What was the biggest issue with the GTX980ti for you? Could it be that he's got a 4.1 flashed to 5.1 with only one CPU while you got 5.1 with two CPU's?
Sorry 'bout that! Thanks for the info anyway. Maybe I'll just wait around for 580...I think you've quoted the wrong person. I don't have a 980 nor do I have dual CPUs.
That aside, a GTX 980 is a completely different architecture to a 10xx series card (Pascal) and the NVIDIA web drivers seem to be ok on that series. You do give up DisplayPort 1.4 and HDMI 2.0 however which limits your monitor selection in the future. No 5K for example.
If instead of a GTX 980 you meant a GTX 680 (which I do own), then the GTX 680 Mac Edition is flawless. Again, it won't drive 4K or 5K monitors but it is pretty much bug free in macOS.
My recommendation to you however is to get a Sapphire RX 580 Pulse 8GB. This is the best card for the cMP currently. Unfortunately it is on backorder at most places but it is worth the wait.
I'm planning to get this GTX980, but I hear different stories about it. Theophany (in this thread) have a 980 that works perfectly, but you had a bad experience with it. What was the biggest issue with the GTX980ti for you? Could it be that he's got a 4.1 flashed to 5.1 with only one CPU while you got a totally different system?Have to agree with Squuiid, GTX 680 is still the absolute king for general Mac usage and Apple Pro apps.
Although I don't know if GTX 780 would be better since it also use native Apple Keppler drivers (A1, the first revision of the card)?
Maxwell and Pascal are good if you're buying them for specific apps, gaming and your workflow require CUDA compute.
To buy them for anything else is just waste of the GPU. I sold GTX 980 because GUI slowdowns and glitches and because most of the FCPX rendering was done by the CPU.
680 if giving me much better overall experience in macOS, although I have R9 280X too and I'm swapping them depending on the current mood.
I'm planning to get this GTX980, but I hear different stories about it. Theophany (in this thread) have a 980 that works perfectly, but you had a bad experience with it. What was the biggest issue with the GTX980ti for you? Could it be that he's got a 4.1 flashed to 5.1 with only one CPU while you got a totally different system?
- All normal GTX 980 Ti with one 6 pin and one 8 pin power connector (except e.g. OC variants like EVGA Classified), and all GTX Titan X (Maxwell) -> No problem with internal PSU, just one 6 to 8 pin and one 6 to 6 pin power cable needed. I'm using a GTX Titan X without issues in this way since one year. Max power consumption is around 230 Watt.
Although the GTX 1080 Ti has the same official power consumption as the GTX 980 Ti, both 250 Watt, the GTX 1080 Ti needs more power and is unsuitable for the internal PSU.
The picture clearly shows the GTX 1080 Ti drawing more power than GTX 980 Ti:
View attachment 716260
Of course, we are exceeding the official power of MacPro's PCIe slot and Boosters by 25W. But that clumsy "fairly safe" line was more directed to hundreds of users that are running those cards without any issue.Keep in mind that "fairly safe" is an opinion though. It's good enough for me, but let's be clear, that setup still exceeds the Mac Pro's threshold.
No, let me repeat it one more time:So let me get this straight (my brain is not working tonight) regarding the first way to do it. So you're saying to hook up a Y splitter mini 6-pin (which I would think would be hard to find) from the motherboard into an 8-pin. Then take another splitter that's an 8-pin that Y's out to a 8 and 6. Man, can you even get those splitters anywhere?
I had 980 but Theophany has 980ti.I'm planning to get this GTX980, but I hear different stories about it. Theophany (in this thread) have a 980 that works perfectly, but you had a bad experience with it. What was the biggest issue with the GTX980ti for you? Could it be that he's got a 4.1 flashed to 5.1 with only one CPU while you got a totally different system?
- All normal GTX 980 Ti with one 6 pin and one 8 pin power connector (except e.g. OC variants like EVGA Classified), and all GTX Titan X (Maxwell) -> No problem with internal PSU, just one 6 to 8 pin and one 6 to 6 pin power cable needed. I'm using a GTX Titan X without issues in this way since one year. Max power consumption is around 230 Watt.
Although the GTX 1080 Ti has the same official power consumption as the GTX 980 Ti, both 250 Watt, the GTX 1080 Ti needs more power and is unsuitable for the internal PSU.
The picture clearly shows the GTX 1080 Ti drawing more power than GTX 980 Ti:
View attachment 716260
No.
980Ti and Titan GPUs might work without extra power cables in case of software not taking full advantage of the GPU.
Talking about safety, all of these cards require extra power from SATA, external PSU or Pixlas Mod.
Under stress, these GPUS will reach 250+W, and it is unadequate to power their 8 pin with the cMP's mini6 pin, for reasons explained throughout this forum over and over, and per cMP's specs.
When powered correctly, they all work perfectly, including dual- and triple 1080Ti or Titan Xp.