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After GTX 470 install, Mac Pro fans can dry my hair!
First, a big thanks to all the vets on this forum for both their technical and artistic advice.
Recently installed a Mac flashed GTX 470 from the macvidcards gentleman on ebay. Nice chap.
On a fresh Snow Leopard 10.6.8 install:
After machine boots up, without using any programs, my fans speed up quite a bit, even
when I’m not using any programs. My machine sounds like a hair dryer. I installed current quadro 4000 drivers, updated CUDA, uninstalled the AGP.kext from system/library/extensions.Fresh Lion 10.7.2:
System boots fine. I only get the hair dryer when using Resolve for a little while. Arri Alexa and Apple Pro res HQ files. Couple of nodes, no blurs. Latest CUDA (Lion has quadro drivers) and uninstalled AGP.kextBoth graphic cards are double slot and right on top of each other like two sweaty prisoners about to be in love. Maybe that’s whats going on? They don’t feel all that hot to the touch though. The cards that is.
I’m aware that this is not an approved Resolve setup but a few other folks have reported their success with the GTX 470 so I thought I’d check it out. The power wattage seems to be in line. Any suggestions? Am I underpowered? ATI, Nvidia conflict? Anyone else run into this?
2008 MacPro 3.1
(Lion 10.7.2 & Snow Leopard 10.6.8)
2.8 quad Xeon
14 GB Ram
ATI Radeon HD 5770 slot 1 GUI (Power jumped from DVD drive)
Nvidia GeForce GTX 470 slot 2 GPU (no monitor attached)
4 Hard drives
Avid Artist Color
Apple 27″LED Display
Blackmagic Decklink HD DL -
3 Replies
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Hi. Probably need to reset your P RAM. Power down, unplug all peripherals. Leave for a couple of minutes then plug all back in and power up again. That should fix it.
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A P RAMM zap is Command/Option PR on startup.
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The PRAM zap did not solve the Snow Leopard issue. The loud fan is the HD/Expansion fan, it’s at 1800 – 1900 RPMS
other fan speeds are:Power Supply: 600
CPU: 500
Exhaust: 1050This is with no programs running.
Got this from the Macvidcards guy:
“First step is to figure out which fan is making the noise.
Download
iStat and it will allow you to rad speeds of the System Fans.It may
show you the 5770 fan , I don’t know. I doubt that it will show you 470
fan.You can run the Mac Pro with the side off and if the loud fan
wasn’t a system fan, it will be one of the GPUs.Fortunately, you can
simply stop them with your finger for a second to see which one is making
the noise.Unfortunately, the 5770 is a Dual slot card and requires more
power. Also, having it side by side with 470 is likely obscuring the input
side of 5770 fan, or pulling air the wrong way through 470.You may want
to consider getting an Apple OEM GT120. It could run the 27″ Apple display
and it does not need any external power. It’s shorter length and single
slot size would free up a lot of space and airflow in the Mac Pro and it
and 470 would not be interfering in each others airflow.”
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