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Geforce 8600 GT and 9800GT SLI?

Last response: in Graphics & Displays
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December 30, 2008 6:17:20 PM

Both of these cards can be used for SLI, but I want to use them both for SLI. Can this be done and how? Im using Windows XP currently, on an SLI ready MSI board.
December 30, 2008 6:41:17 PM

No? That was a very elaborate response. Thanks for your time :) . Any other comments?
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December 30, 2008 6:46:08 PM

they MUST be the same card, you can sli 2 8600 o 2 9800, but you cant mix.
but with the latest beta driver from Nvidia you can use the 8600 for physix.
a c 147 U Graphics card
December 30, 2008 6:48:57 PM

Yeah you need identical cards. Even if they are identical, lets say 8800GT and 8800GT OC version. It will clock down the OC card so they have identical clocks.

Like Tomasf said, with the new drivers you can use a 2nd card, non SLI and use it for Physics. It is worth a try. Not sure how well it works but it would be interesting to find out.
December 30, 2008 8:01:03 PM

I currently have 8800GT in my system but can't seem to find any others in stock to SLI it with, no one is carrying them. I've been told the 9800GT is basically the exact same and may be able to be SLI'ed with a 8800GT...anyone know if this is true?
December 30, 2008 11:09:44 PM

The only thing you can SLI together that are in different series are 9800 GT's and 8800 GT's, these two cards are exactly the same except the 9800 gt is 55nm.
a c 147 U Graphics card
December 31, 2008 1:42:17 PM

I would try and pick up another 8800GT on eBay or craigslist or somewhere used. Otherwise you may as well sell your 8800GT and get a GTX 260/216 and be done with it. I believe a single GTX 260 runs on par with a pair of 8800GT SLIed. You can overlock the crap out of the GTX 260 as well.

Just my thoughts.
January 12, 2009 2:40:10 AM

i am currently running an 8800 gt and a 9800gt in sli. people said it couldnt be done. What i did was find a bios of the same manufacturer of my 8800gt and flash it with a 9800gt bios. everything runs good so far.
January 12, 2009 4:39:26 AM

would it be worth it to sli 2 9800 gt, or just get a gtx 280,
i can't find bench marks for 2 9800 gt? any one have some?
a c 147 U Graphics card
January 12, 2009 1:44:51 PM

The new GTX 260 and 280 are CPU hungry. Just watch that part if you decide to go that route. I had a single GT 260 and found it really took a beating on my CPU and really didn't show a drastic performance increase over a single OCed 8800GTS/512. I put it in my buddies i7 system and it ran like a wild banshee.

THe SLI 8800GT setup might run better if you have a slower CPU.
January 12, 2009 3:06:43 PM

Note for the 8800 GT / 9800 GT discussion. The 8800 GT 512 MB is the same card as the 9800 GT, not any other 8800 GT. Differences between the two cards:

1. Bios (as mentioned by Kildron)
2. Manufacturing process (as mentioned by xTalent)

However, if you want to risk it, you can flash the 8800 GT or 9800 GT into the other. Most people that do it flash the 9800 GT into a 8800 GT in order to get around the major change with the manufacturing process.

The 55nm manufacturing process cards support Hybrid Power, the older 8800 GT does not. (This isn't an issue for most people, but is the easiest way to tell the cards apart.) This includes differentiating between the "first generation" 9800 GTs (reflashed 8800 GTs) and "new" 9800 GTs made at 55 nm.
a b U Graphics card
January 12, 2009 5:05:47 PM

Metalhead092 said:
I currently have 8800GT in my system but can't seem to find any others in stock to SLI it with, no one is carrying them. I've been told the 9800GT is basically the exact same and may be able to be SLI'ed with a 8800GT...anyone know if this is true?



i think the BIOS of both cards along with the driver will stop you from doing that.

but if you can flash that 8800gt into a 9800gt or vice versa, it might work. thats my complete guess though lol so dont blame me for any mishaps.
a b U Graphics card
January 12, 2009 5:07:25 PM

xTalent said:
The only thing you can SLI together that are in different series are 9800 GT's and 8800 GT's, these two cards are exactly the same except the 9800 gt is 55nm.


there are 9800gt's that are still 65nm, those that dont support HybridPower.

just my 2 cents.
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