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oksnr

macrumors newbie
Original poster
Jan 23, 2015
23
1
As the title says, I have a Mac Pro 3,1. Here is my dilemma:

Currently running Samsung 850 Pro on Apricorn Solo x1 card (runs great, really like it).

I want to add a second Samsung 850 Pro and setup with raid 0, so I figure this is a good time to get a faster PCIe card for the drives.

I need to use the second PCIe slot because that is 2.0. The higher ups are 1.0.

The Velocity Duo x2 will cover the top fan in the GTX660.

Can I go with a Solo x2 and just use a cable off it for the 2nd SSD?
 

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flowrider

macrumors 604
Nov 23, 2012
7,231
2,958
I'm running two Duo x2s in my Mac Pro 5,1 with a GTX 780, and I do not have any cooling issues. One of them is in slot 2, just above the card. I must mention though, that my card is a 3 fan Gigabyte.

Lou
 

oksnr

macrumors newbie
Original poster
Jan 23, 2015
23
1
Thank you for the information Lou.

Do you know if the speed would be the same with two SSDs on a solo x2 (cable off the end method) as compared to a duo x2?

Just worried about covering the only fan on my graphics card. However if you are covering all 3 and still running cool, that is good to know.
 

scottsjack

macrumors 68000
Aug 25, 2010
1,906
311
Arizona
As the title says, I have a Mac Pro 3,1. Here is my dilemma:

Currently running Samsung 850 Pro on Apricorn Solo x1 card (runs great, really like it).

I want to add a second Samsung 850 Pro and setup with raid 0, so I figure this is a good time to get a faster PCIe card for the drives.

I need to use the second PCIe slot because that is 2.0. The higher ups are 1.0.

The Velocity Duo x2 will cover the top fan in the GTX660.

Can I go with a Solo x2 and just use a cable off it for the 2nd SSD?

I put mine in slot 3 because it covered the fan on my HD5770. One of the things I am going to look for in a GPU replacement is one where the fan is placed past the end of the Vel Duo. May even an HD5870.
 

oksnr

macrumors newbie
Original poster
Jan 23, 2015
23
1
I should have been more specific and accurate with my wording.

2008 Mac Pro (3,1): Slot 1 & 2 are 2.0 and slot 3 & 4 are 1.0 (as far as I know)

Wait, The Top 2 PCIe Slots are PCIe 1.0? In a 2009+?
 

flowrider

macrumors 604
Nov 23, 2012
7,231
2,958
And just to add, if the OP is concerned about GPU temps. He can always mount the GPU in slot 2, leave slot 3 open and mount the Duo in slot 1. And yes, my Duo covers all three fans in my GTX 780.

Lou
 

oksnr

macrumors newbie
Original poster
Jan 23, 2015
23
1
And just to add, if the OP is concerned about GPU temps. He can always mount the GPU in slot 2, leave slot 3 open and mount the Duo in slot 1. And yes, my Duo covers all three fans in my GTX 780.

Lou

Wow, I feel like a complete moron. It didn't even hit me to put the GPU in slot 2 and the duo in slot 1.

Ok, last thing I hope - Is there any downside to having the GPU in slot 2? I know they are both 2.0 spec so I would think not.

Thanks again for the help.
 

Macsonic

macrumors 68000
Sep 6, 2009
1,706
97
Wow, I feel like a complete moron. It didn't even hit me to put the GPU in slot 2 and the duo in slot 1.

Ok, last thing I hope - Is there any downside to having the GPU in slot 2? I know they are both 2.0 spec so I would think not.

Thanks again for the help.

When I had my 2008 3,1 Mac Pro, there was a time I place my Nvidia 680 gtx on slot 2 as I had a GT120 on slot 1. Everything ran fine with no problems.
 

crjackson2134

macrumors 601
Mar 6, 2013
4,823
1,948
Charlotte, NC
I could be wrong (not unusual for me) but the design of fans draw air instead of pushing at the fan openings. It doesn't require that much space and since its a dual fan configuration it probably makes very little difference. From looking at your photo, I believe there's enough space for adequate draw to take place.
 

flowrider

macrumors 604
Nov 23, 2012
7,231
2,958
Ok, last thing I hope - Is there any downside to having the GPU in slot 2? I know they are both 2.0 spec so I would think not.

None whatsoever, both slot 1 and slot 2 have the same specifications.

Lou
 
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