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SolidGun
Jul 3, 2009, 02:59 PM
I have been struggling for a while on this and just spent a good hour at Microcenter looking for this cable needed.
:mad:
I understand that I need 2, but only links I have seen are from UK sites.

I know someone must own 3,1 MacPro and have installed 4890. Where did you get your cable?

Thank you in advance.


EDIT:
http://shop.ati.com/product.asp?sku=3280778
This is what works right? I can't zoom in enough to see if it is the right size fit as I have no experience with 1900



Cindori
Jul 3, 2009, 03:15 PM
Yes, it works.

If you don't use a second DVD-drive you can also do it like this:


http://forums.macrumors.com/showthread.php?t=418279

SolidGun
Jul 3, 2009, 03:18 PM
Thx for the response Cindori. I was reading through your mega post on 4890 installation and realized that 3,1 has different power cables available and just SATA+power combo out.

Great help!!!!

fstz28
Jul 4, 2009, 11:38 AM
I used this for my 4890

http://www.newegg.com/Product/Product.aspx?Item=N82E16812201008

it plugs straight into the existing 6 pin power going to your video card (if it required separate power) i have a MP 3,1 former 8800

SolidGun
Jul 4, 2009, 11:42 AM
I used this for my 4890

http://www.newegg.com/Product/Product.aspx?Item=N82E16812201008

it plugs straight into the existing 6 pin power going to your video card (if it required separate power) i have a MP 3,1 former 8800

I have the GT120 and I don't see additional power source that this card uses at all.

Cindori
Jul 4, 2009, 11:50 AM
I used this for my 4890

http://www.newegg.com/Product/Product.aspx?Item=N82E16812201008

it plugs straight into the existing 6 pin power going to your video card (if it required separate power) i have a MP 3,1 former 8800

Wow, powering a 4890 on a single motherboard port? Did not know that was possible! No problems under heavy load?

fstz28
Jul 5, 2009, 01:12 AM
Didn't have a problem with it, but i just rewired it.

Just went back and read the ADC on MP PCIe power and i'm am and idiot and didn't read it well enough the first time:

When populating the four PCI Express slots, you need to conform to the following total wattage rules:

Slots one and two (not including aux power), max slot power per slot: 75 W
Slots three and four (not including aux power), max slot power per slot: 40 W
All four slots (not including aux power), max total power: 200 W
Max aux power per connector: 75 W
Max aux power for both connectors: 150 W
Max total PCI Express power (slot power and aux connector power): 300 W

http://developer.apple.com/documentation/Hardware/Conceptual/HWtech_PCI/Articles/pci_implementation.html

Thanks for questioning that Cindori, otherwise i never would have gone back and re-read it. and would have probably ran into problems sooner than later.