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9800 GTX and GTX+ Sli , PCI-e slot #

Forum Graphic & Displays : Graphics Cards - 9800 GTX and GTX+ Sli , PCI-e slot #

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Bronze Graphics badge Bluescreendeath   03-07-2009 at 06:08:16 PM

Hello there, I'm SLing a 9800GTX and 9800GTX+ together.

I have 3 PCI-e slots in my 780i - which card should I install into the first slot?
I've heard some say to install the GTX and others say to install the GTX+ in the first slot.

Where will the other card go? 2nd or 3rd slot?
Also which slot is exactly #2 and #3 because I don't think they go in order from left to right.

Slot 1.......Slot 3?......Slot 2?
lxl-----------lxl-----------lxl
lxl-----------lxl-----------lxl
lxl-----------lxl-----------lxl
lxl-----------lxl-----------lxl
lxl-----------lxl-----------lxl
lxl-----------lxl-----------lxl

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Bronze Graphics badge Bluescreendeath   03-08-2009 at 11:08:47 PM
- 0 +

Has anyone done something similar?

Reply to Bluescreendeath
vpsaline   03-08-2009 at 11:20:04 PM
- 0 +

I would put the fastest one #1 although note; in theory it doesnt affect anything which one you put where. Put the warmest one closest to the airflow in your case. Next; place them so that there is an empty pcie slot inbetween them.

Anotherthing to watchout for is that I am not 100% certain that these can even be slied together. You may need to bios flash them first. Did you do homework on this prior to buying?


Message edited by vpsaline on 03-08-2009 at 11:21:06 PM
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boulard83   03-08-2009 at 11:21:39 PM
- 0 +

GTX+ in the #1 slot, cause games taht dont support sli will run on your fastest card !

------------------------------ __________________________Le Québécois_________________________
WCed Q9550 EO + P5Q @ 3.825ghz / HTPC - E5200 + P5Q @ 3.3ghz
BFG GTX285 OC2 + PC P&C 750w . / HIS HD4850 with Sharp 42" 1080p
 Reply to boulard83
Bronze Graphics badge Bluescreendeath   03-08-2009 at 11:24:05 PM
- 0 +

^ Yes, the GTX and GTX+ are 100% compatible in SLi.

Although when you say put the warmer one next to the airflow, that would be my GTX in slot 1. That would mean my non-SLi games would run a bit slower. Would the GTX in slot #3 be disabled when it's not in use, so it gives off less heat?

So it's a tradeoff between heat and better performance in non-SLi games.
Which should I do?

Reply to Bluescreendeath
boulard83   03-08-2009 at 11:32:45 PM
- 0 +

GTX+ in the SLOT 1. just have a look at the GPU temp, you can use EVGA precision. EX to use and helpfull software.

------------------------------ __________________________Le Québécois_________________________
WCed Q9550 EO + P5Q @ 3.825ghz / HTPC - E5200 + P5Q @ 3.3ghz
BFG GTX285 OC2 + PC P&C 750w . / HIS HD4850 with Sharp 42" 1080p
 Reply to boulard83
Bronze Graphics badge Bluescreendeath   03-08-2009 at 11:57:14 PM
- 0 +

thxs. I was looking at another post and someone said the GTX goes in slot1 so the GTX+ downclocks to it?

Reply to Bluescreendeath
vpsaline   03-09-2009 at 12:01:45 AM
- 0 +

ya the quickest card always gets downclocked, when in slot 1 or 3 doesnt matter.

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Bronze Graphics badge Bluescreendeath   03-09-2009 at 04:55:58 AM
- 0 +

kk thxs. although I've heart that the GTX+ is sometimes read as a 8800GT

Is this a problem limited to the GTX+ in slot 1, or is it just for any situation with GTX and GTX+ ?

Reply to Bluescreendeath
WBZ-Apocalypse   05-02-2009 at 04:09:24 AM
- 0 +

all you need to do to avoid that is to put your sli connector on the second sli bridge from the dvi ports and it will work fine and if you get a black screen with a white flashing bar for more then a minute download the drivers from the manufacture thats what i had to do to fix mine since i had a xfx and a evga in my setup. well good luck

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boulard83   05-02-2009 at 04:45:33 AM
- 0 +

Never had any trouble with my SLI GTX+ ...

------------------------------ __________________________Le Québécois_________________________
WCed Q9550 EO + P5Q @ 3.825ghz / HTPC - E5200 + P5Q @ 3.3ghz
BFG GTX285 OC2 + PC P&C 750w . / HIS HD4850 with Sharp 42" 1080p
 Reply to boulard83
Bronze Graphics badge Bluescreendeath   05-02-2009 at 05:12:03 AM
- 0 +

Yes, thanks everything has been working fine.

------------------------------ i7 920, E5300
GTX260, HD4870, HD4830
 Reply to Bluescreendeath
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