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High-End Card on Lower Slot Question

post #1 of 7
Thread Starter 
Hi all, I have a similar that just sparked an idea to maximize cooling, but I'm not sure if there is enough clearance.

If I were to place a PCI-E (the long slot) card onto the last slot (bottom) on the motherboard, would there be enough clearance for the accessory connectors (e.g USB1/2/3, AUDIO, SYS_FAN) to be plugged in?

I am planning to put a 6970 with AXP (3-slot altogether, I have two), but I am worried if there's no clearance to have those connectors plugged in.
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post #2 of 7
Quote:
Originally Posted by maTyaR View Post
Hi all, I have a similar that just sparked an idea to maximize cooling, but I'm not sure if there is enough clearance.

If I were to place a PCI-E (the long slot) card onto the last slot (bottom) on the motherboard, would there be enough clearance for the accessory connectors (e.g USB1/2/3, AUDIO, SYS_FAN) to be plugged in?

I am planning to put a 6970 with AXP (3-slot altogether, I have two), but I am worried if there's no clearance to have those connectors plugged in.
Possibly. is it a dual slot GPU?? Either way it will be a tight fit (for your USB header connectors, etc.) and possibly yield high temps for your card if its practically sandwiched against the bottom of the case
Edited by raidmaxGuy - 10/8/11 at 5:17pm
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post #3 of 7
Thread Starter 
Quote:
Originally Posted by raidmaxGuy View Post
Possibly. is it a dual slot GPU?? Either way it will be a tight fit and possibly yield high temps for your card if its practically sandwiched against the bottom of the case
Each card takes 3 slots (I have 2 of these 6970s with AXP cooler). a CM HAF 932 will not work as the case (last slot) will only provide 1 additional slot space.
An Antec twelve hundred would work, but a PSU will be very close to the 2nd card.

Then again, I am still unsure whether if theres space for the plugs . I should have taken into consideration that these cards limit the motherboard choices for future selection.
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post #4 of 7
Which slot are you talking about, the bottom red slot or the white slot? Because the white slot on the M3F is only 4x and would bottleneck your card.



There should be room for you to be able to put the cards in the two red slots with AXPs, and you won't have any problems with the front panel cables.

With AXPs I don't think you'll need to worry about temps too much.
     
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post #5 of 7
Thread Starter 
Sorry, I wish to use MSI 990FXA-GD80 as my next upgrade, but am worried about the front panel connectors if I were to place the 2nd 6970 on the last slot (bottom).

I currently have a PCI-E 1x on the top, 2 AXP 6970s on the red slots, but if I play Witcher 2 (high gpu usage), the temperatures begin to go quite high. I would really like to space my cards out for better airflow.
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post #6 of 7
Okay, well as far as front panel cables go it should be okay, as long as route them tight, but if you put a triple slot card in the bottom slot on a GD80 it will hit your power supply, unless you are also planning on a different case, like a HAF X.
     
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post #7 of 7
See pic 1:
MSI 990FXA-GD80 's lowest PCIEx16 slot (ie PCIE_6) supports up to x4 speed only and this relatively low speed will introduce a rather 'significant' performance loss of your HD6970. Therefore, it is better to use the top slot (ie PCI_E2) and the one next up from the bottom (ie PCI_E5).

See pic 2:
For two 3-slot HD6970s (red rectangles) on these 2 slots, you will still have one empty slot in between them.
Your PCIEx1 sound card (green rectangle) will remain at the topmost slot.
The case must have (at least) an 8th slot for hot air of the bottom card to exhaust (blue arrow). This means, your Antec 902 is not suitable.

And I suggest to have a case with a 9th slot so that there is at least one empty slot space between the bottom card and the PSU below. If there is a 10th slot, it will be even better.
Eg Xigmatek Elysium (having 10 slots and US$250), Rosewill Thor (having 10 slots and US$130), HAF-X (having 9 slots and US$180).

See pics 3 and 4:
The biggest challenge is whether those header cables along the bottom edge of the mobo can be fitted underneath the graphics card.

One can see the outer/front row of USB pins will have easier fit while the inner/back row will have a harder time. And the case front panel I/O cable headers (eg Power/Reset) will have conflict with the plastic shroud of my GTX285 if the shroud does not have that curve-around at the corner.

See pic 5:
These all indicate that if will not be an easy fit for your HD6970 armed with AXP. However, there is a good possibility because the AXP does not use a plastic shroud and this means the bottom is of open space and so the cable headers can steal some space or headroom.





Edited by windfire - 10/8/11 at 8:23pm
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