Simviation Forum - SLI GRFX Cards

Dec 27^th, 2010 at 1:06pm

nichos Offline
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hI again & Happy New Year,

I am trying to use three monitors with FSX & need two cards .
Can I install a GeForce 9800 GTX PCI-E & an MSI 6600 gti PCI Cards on my Asus P5K Premium?

Asus P5K Premium WiFiiFi Intel Core 2 Quad Pro 2.4GHz, OCZ Cpu Cooler, 2x2GB, DDR2 800 PC2-6400, GeForce 9800 GTX (PCI-E), sata 160gb, OCZ 600W Psu, XPhome sp3

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Reply #1 - Dec 27^th, 2010 at 9:28pm

NNNG Ex Member

I think you can.

And there can be no harm in trying.

However, SLI is when the videocards are working in parallel. You need two identical nvidia videocards and a SLI capable motherboard to use SLI. Since you do not have this, all of the load will be on the 9800GTX. The 6600 won't be doing anything, except idling.

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Reply #2 - Dec 28^th, 2010 at 12:42am

elite marksman Offline
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IIRC, with certain NVIDIA cards you can use dissimilar cards. However, only one will handle video while the other will handle physics processing. I believe both cards must be a certain model (8xxx or later?).

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Reply #3 - Dec 28^th, 2010 at 1:32pm

snippyfsxer Offline
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elite marksman wrote on Dec 28^th, 2010 at 12:42am:

IIRC, with certain NVIDIA cards you can use dissimilar cards. However, only one will handle video while the other will handle physics processing. I believe both cards must be a certain model (8xxx or later?).

In certain configurations FSX might benefit from a straight SLI configuration, with identical cards, but it does not benefit at all from PhysX, or for having an extra card dedicated as such.

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Reply #4 - Dec 28^th, 2010 at 3:03pm

richardd43 Offline
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If you just want to use 3 monitors the answer to your question is "YES"

SLI is not an option with 3 monitors anyway.

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Reply #5 - Dec 28^th, 2010 at 4:02pm

snippyfsxer Offline
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richardd43 wrote on Dec 28^th, 2010 at 3:03pm:

If you just want to use 3 monitors the answer to your question is "YES"

SLI is not an option with 3 monitors anyway.

Yes, the first statement is correct. If he wants to run a main display and then one or more others to host 2D popups or other applications, then he should be fine.

The second observation is incorrect.

If the OP envisions running a surround type setup with the virtual cockpit, using NVIDIA cards, SLI is the ONLY option unless he uses a Matrox Th2go. If he has a th2go, he doesn't need to use SLI, but he can and should anyway..he will get performance benefit from SLI since it helps out when using decent AA in conjunction with ultra-high resolutions.

On ATI, he could use one card with Eyefinity, but someone more familiar with that brand can elaborate on that.

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Reply #6 - Dec 28^th, 2010 at 6:36pm

richardd43 Offline
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Quote:

The second observation is incorrect.

With the cards in question if he tried SLI he can only run 2 monitors and they both have to be connected to the same card.

Asus P8Z77-V Deluxe
Intel I7 3770K w/ Corsair H100
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2 x Seagate Sata 3
16 G Corsair Meemory
2 x EVGA GTX 295
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Reply #7 - Dec 28^th, 2010 at 7:19pm

snippyfsxer Offline
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richardd43 wrote on Dec 28^th, 2010 at 6:36pm:

Quote:

The second observation is incorrect.

With the cards in question if he tried SLI he can only run 2 monitors and they both have to be connected to the same card.

For whatever reason I thought you were speaking in general, and I was thinking 400/500 series cards with Nvidia Surround. You are, afterall, correct, sir...My mistake.

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Reply #8 - Jan 3^rd, 2011 at 4:20am

nichos Offline
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For anybody imterested,

After my 1st post above, I found this Sapphire HD 5770 FLEX, available at Overcklokers & can be seen here:-
http://www.neoseeker.com/Articles/Hardw ... 5770_flex/

"......Sapphire has decided that you should be able to power three DVI monitors on a single Radeon HD 5XXX card. They've proved this by releasing the HD 5770 FLEX. The FLEX is the very first 5XXX series card with the ability to power three DVI monitors right out of the packaging......"

Has'nt anybody seen it or tried it?, of all the complicated & expensive gen people gave me, this (£119) grfx card seems to do my triple trick even by real newbees like me. OR is there a catch to it I wonder? .....nick

Asus P5K Premium WiFiiFi Intel Core 2 Quad Pro 2.4GHz, OCZ Cpu Cooler, 2x2GB, DDR2 800 PC2-6400, GeForce 9800 GTX (PCI-E), sata 160gb, OCZ 600W Psu, XPhome sp3

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Reply #9 - Jan 5^th, 2011 at 4:23pm

nichos Offline
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Sorry but please disregard above requests for help.

Overclockers verified to me:-

1. that Ati Radeaon 5770 Flex will run FSX, it does not !!.

2. that all cables needed for 3 screens are in the box, none usable was found, & 4 cables needed extra £100.

Asus P5K Premium WiFiiFi Intel Core 2 Quad Pro 2.4GHz, OCZ Cpu Cooler, 2x2GB, DDR2 800 PC2-6400, GeForce 9800 GTX (PCI-E), sata 160gb, OCZ 600W Psu, XPhome sp3

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