9800 GTX and 9800 GTX+ SLI Compatibility?

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NYC2014

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May 10, 2012
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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+.
 
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auntarie

auntarie

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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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NYC2014

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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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auntarie

auntarie

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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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Sunius

Sunius

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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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Mousemonkey

Mousemonkey

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Not all the GTX+'s were 55nm GPU equipped cards, XFX ones in particular spring to mind.
 
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NYC2014

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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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NYC2014

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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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NYC2014

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Heh, I'd still like to know whether a GTX regular is compatible.
 
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auntarie

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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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NYC2014

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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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Project X

Project X

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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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NYC2014

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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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proxy711

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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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NYC2014

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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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ilysaml

ilysaml

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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=58112

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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