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9800 GTX and 9800 GTX+ SLI Compatibility?

Last response: in Graphics & Displays
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May 13, 2012 2:03:20 PM

CPU: i5 3570k
Mobo: ASRock Z77 Extreme4
GPU: NVIDIA GeForce 9800 GTX+
RAM: Kingston 8GB
PSU: Raidmax 700w
HDD: 500GB

I'm wondering whether I can use a used 9800 GTX from ebay or if I'll have to find a GTX+.
a b U Graphics card
May 13, 2012 2:15:42 PM

you'll have to find + edition to make perfect sli..
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May 13, 2012 2:15:59 PM

they should work,but if the cards have slightly different specs then both cards will run at the same specs as the slower card......
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a b U Graphics card
May 13, 2012 2:16:02 PM

Why would you do that? Your system is awesome and you want to put in a 3-4 year old card in it. I understand that you already have a 9800GTX, but you can buy a single newer card that will be better than 2x 9800GTX in SLI. What is your budget? I'm sure we'll be able to give you better options.
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a b U Graphics card
May 13, 2012 2:25:00 PM

it's also possible with gtx but keep the gtx+ in the first slot of pci-e. Then they will be done
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May 13, 2012 2:31:29 PM

auntarie said:
Why would you do that? Your system is awesome and you want to put in a 3-4 year old card in it. I understand that you already have a 9800GTX, but you can buy a single newer card that will be better than 2x 9800GTX in SLI. What is your budget? I'm sure we'll be able to give you better options.


I have an unlimited budget, but (obviously) I don't want to spend more than I have to. I could be wrong, but won't two GTX+'s run Diablo 3 quite well?

According to this chart (http://www.videocardbenchmark.net/high_end_gpus.html), the 9800 GTX+ gets a 1100 mark. Two would be a 2200 mark (that's how it works, right? I'm assuming there are no diminishing returns, i.e. the second card is only 50% efficient), and I can buy that for ~$40. Looking at the 2200ish range, they're $120+ each.


That said, I have no idea what I'm talking about, so if you've got suggestions, please, tell me.
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a b U Graphics card
May 13, 2012 2:43:04 PM

No, with 9800GTX+ in SLI you'll get around 2000-2100. However, a mere GTX 560 will give you 2700 for $170, according to that same benchmark. That was my point. But I guess you'll be fine with those two cards for D3.

And now to the topic, GTX+ is just a, let's say, more unlocked GTX. That means you'll have more overclocking headroom. It will work with a GTX+ in SLI, but both cards will operate at the GTX's lower clock speeds. So you might want to either overclock it or buy another GTX+ to match them perfectly.
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a c 291 U Graphics card
May 13, 2012 2:45:03 PM

NO it will NOT work. 9800 GTX+ is 55 nm while 9800 GTX is 65 nm production process. It's two different GPUs, although they share their name. If you can get a 9800 GTX+ for below $100, it's the best deal you can get, considering your power supply is up to the task (which should be).
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a c 271 U Graphics card
May 13, 2012 2:54:43 PM

Sunius said:
NO it will NOT work. 9800 GTX+ is 55 nm while 9800 GTX is 65 nm production process. It's two different GPUs, although they share their name. If you can get a 9800 GTX+ for below $100, it's the best deal you can get, considering your power supply is up to the task (which should be).

Not all the GTX+'s were 55nm GPU equipped cards, XFX ones in particular spring to mind.
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May 13, 2012 2:58:37 PM

There seems to be a difference of opinion in this thread - I'd rather not take any chances of wasting money, or worse, messing up the rest of my system. Does anyone know for sure whether I can buy a GeForce 9800 GTX, with the expectation for it to be in SLI with my GTX+?

I understand that it might lower them both down to GTX speeds - but that's a negligible difference, isn't it?

...I really wish I knew more things about things.
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May 13, 2012 3:24:03 PM

I think you would be better off getting a single new card solution like the 560......
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May 13, 2012 3:40:55 PM

teaser said:
I think you would be better off getting a single new card solution like the 560......


Which one do you mean, and how much does it cost? Is it so much better that it warrants paying that much more than another 9800 would cost me?
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a c 291 U Graphics card
May 13, 2012 4:03:41 PM

It's not worth going for newer card if you can go SLI.

@auntarie: he can get second a 9800 GTX+ way cheaper, why he shouldn't go for it? The end result of processing power would be the same, but he'd spend way less.
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May 13, 2012 4:06:37 PM

Sunius said:
It's not worth going for newer card if you can go SLI.

@auntarie: he can get second a 9800 GTX+ way cheaper, why he shouldn't go for it? The end result of processing power would be the same, but he'd spend way less.


Heh, I'd still like to know whether a GTX regular is compatible.
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a c 291 U Graphics card
May 13, 2012 4:07:45 PM

I haven't tried it myself, so I can't be sure. But I think it's not because it's different manufacturing process..
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a b U Graphics card
May 13, 2012 4:29:28 PM

Sunius said:
It's not worth going for newer card if you can go SLI.

@auntarie: he can get second a 9800 GTX+ way cheaper, why he shouldn't go for it? The end result of processing power would be the same, but he'd spend way less.


Because, if the GTX is not compatible, he'll have to go for the newer card anyway. This way he'll be able to avoid the risk and become a little bit more future-proof.
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May 13, 2012 4:33:11 PM

auntarie said:
Because, if the GTX is not compatible, he'll have to go for the newer card anyway. This way he'll be able to avoid the risk and become a little bit more future-proof.


You realize that I would find out whether the GTX is compatible before I buy one, and that if I can't find out whether it is, or if it turns out that it isn't, I won't buy one. I'll buy a GTX+ instead. There is literally zero risk involved, and the future-proofing does not make sense for what it would cost me to do the same thing in the present. I'm saying this knowing almost nothing about computers, but just logically what you're saying makes no sense, mate.
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May 13, 2012 6:08:44 PM

you'll be drawing way more power with sli'd 9800 GTX+'s, if I'm correct.

I'd suggest you sell your 9800 GTX+ and pick up a newer, single card. 560, 560ti something around there
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May 13, 2012 6:17:27 PM

Project X said:
you'll be drawing way more power with sli'd 9800 GTX+'s, if I'm correct.

I'd suggest you sell your 9800 GTX+ and pick up a newer, single card. 560, 560ti something around there


I don't think it makes financial sense to do so. I can survive using 2x GTX+'s until the next game after Diablo comes out. That could be years away, and the price on a card I'd buy now would be much, much less by then.

I really just need to hear from someone who knows whether a GTX is compatible with a GTX+ for sure.
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May 13, 2012 6:34:41 PM

After hitting up google and reading a few forums it seems a 9800GTX+ and a 9800GTX work in SLI. I'd use EVGA precision to downclock or overclock a gpu so they have matching speeds, if they don't downclock on their own.

Personally I'd just upgrade to a newer card, but it sounds like you're a pretty casual gamer. If you're ok with running these old cards in SLI that's your call.
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a b U Graphics card
May 13, 2012 6:40:29 PM

friend gtx is compatible to sli it with gtx+ but you must keep the gtx+ in the first slot pci-e, as for long as clock speed are same (even if they are not same then the faster card will dipp down to reach the slower card)
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May 13, 2012 6:43:23 PM

proxy711 said:
After hitting up google and reading a few forums it seems a 9800GTX+ and a 9800GTX work in SLI. I'd use EVGA precision to downclock or overclock a gpu so they have matching speeds, if they don't downclock on their own.

Personally I'd just upgrade to a newer card, but it sounds like you're a pretty casual gamer. If you're ok with running these old cards in SLI that's your call.


I'm anything but a casual gamer. I've spent probably literally...IDK...1,000 in-game days (600 in WoW, but I've played pretty much everything else a pro level, too). I'm just not seeing any benefit a new card will give me for Diablo III that will justify spending more money on it.

Thanks for doing a search for me - I tried doing the same thing, but it seems inconclusive on most forums (much like in this thread - some people say yes, some say no. I saw a guy had asked a NVIDIA rep and he said no, but then other people were saying that rep didn't know what he was talking about, etc.).

What is EVGA precision?
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a c 143 U Graphics card
May 13, 2012 7:12:00 PM

After doing a hard search on google it turned out that you can SLI 9800 GTX with 9800 GTX+ as they both have the same chipset.
Source:http://www.evga.com/support/faq/afmmain.aspx?faqid=5811...

I'm not so sure about it, and I recommend you to search more.

Anyway, in case they SLI together you'll need to OC the slowest card to match up the other one.

EDIT: After looking around, there are a couple of 9800 GTX+ on ebay.
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