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NVIDIA GTX Titan SLI vs AMD Radeon HD 7990 Quad-Crossfire

post #1 of 21
Thread Starter 
I was wondering what would win?
x2 Titan's in SLI
x2 7990's in Quad-Crossfire
I'd like to know about the pros and cons of each setup, since the titan is a single GPU card and the 7990 is a dual GPU card, there can be problems with scaling on 2 7990's, but wouldn't it be a faster setup regardless than a sli titan setup?
As for resolution, lets say this setup will be used for a triple monitor build, along with all cards being watercooled.

What I will be building is this

The thing is, there will be two builds, the only difference is that i am wondering if both builds should go SLI Titan or one build SLI Titan, while other is Quad-SLI 7990
This build won't be done all at once so don't worry about a budget.
Edited by DawnBladeDN - 5/15/13 at 8:52pm

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post #2 of 21
Titan sli

Pro's:

Less power consumption and less heat to cool.
Better frametimes than the 7990 (until their new driver gets released to address the issue although quadfire would most likely have more microstutter anyways than sli even with this driver).
Ability to upgrade in the future.
3gb more vram than the 7990.
Less problems in general with dual cards (or tri if you decide to upgrade in the future) than with 4 gpu's
Should overclock better than a dual gpu card
Less scaling issues

Con's:
Most likely will have less raw fps than dual 7990's


Dual 7990

Pro's:
More raw fps than dual titans
Lots of free games

Cons:
Not the greatest scaling in games on the 4th gpu
High power consumption + heat output so more rads needed to cool them
Microstutter (at least I'm not aware that they have fixed this issue yet)


Personally with your budget I would go with the Titans and get a third down the road. Running 4 gpu's doesn't seem to be worth it when looking at scaling since most games scale not so great with the 4th gpu leaving you with essentially the performance of just 3 gpu's anyway.

If I was in your position I would go with tri 7970's instead of dual 7990's if I went down the AMD route. Although with the Titans you do get an extra 3gb of vram which could be helpful at triple monitor resolutions.
Edited by icehotshot - 5/15/13 at 8:51pm
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post #3 of 21
Thread Starter 
Quote:
Originally Posted by icehotshot View Post

Titan sli

Pro's:

Less power consumption and less heat to cool.
Better frametimes than the 7990 (until their new driver gets released to address the issue although quadfire would most likely have more microstutter anyways than sli even with this driver).
Ability to upgrade in the future.
3gb more vram than the 7990.
Less problems in general with dual cards (or tri if you decide to upgrade in the future) than with 4 gpu's
Should overclock better than a dual gpu card
Less scaling issues

Con's:
Most likely will have less raw fps than dual 7990's


Dual 7990

Pro's:
More raw fps than dual titans
Lots of free games?

Cons:
Not the greatest scaling in games on the 4th gpu
High power consumption + heat output so more rads needed to cool them
Microstutter (at least I'm not aware that they have fixed this issue yet)


Personally with your budget I would go with the Titans and get a third down the road. Running 4 gpu's doesn't seem to be worth it when looking at scaling since most games scale not so great with the 4th gpu leaving you with essentially the performance of just 3 gpu's anyway. If I was in your position I would go with tri 7970's instead of dual 7990's if I went down the AMD route.


Plus the additional vram with the Titans couldn't hurt with triple monitor resolutions.
I edited my first post to show why I asked along with the proposed build idea, check it out and let me know smile.gif
both will be WC'd so I don't worry about cooling, although its a CPU and 2 GPU's in a quad 120 radiator, might need another rad.
the thing on my mind is how much microstutter will there be with this quad-crossfire 7990 idea
I saw that 7990 deal! biggrin.gif gosh it's just pure epicness o.o
im not worried about a budget because this build will be done with time, will not do it all at once, this will be a VERY long build process.
post #4 of 21
The fewer GPUs the better, in reality nVidia seems to have better support for games like iRacing. The only advantage AMD has in this is Raw power for the few games that work properly with 4 cards.
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post #5 of 21
Quote:
Originally Posted by DawnBladeDN View Post

I edited my first post to show why I asked along with the proposed build idea, check it out and let me know smile.gif
both will be WC'd so I don't worry about cooling, although its a CPU and 2 GPU's in a quad 120 radiator, might need another rad.
the thing on my mind is how much microstutter will there be with this quad-crossfire 7990 idea
I saw that 7990 deal! biggrin.gif gosh it's just pure epicness o.o
im not worried about a budget because this build will be done with time, will not do it all at once, this will be a VERY long build process.

I will say this is going to be a sick setup! I wish I had the budget for something like that right now it would be pretty epic.

The driver to fix the microstutter should be out in the next month or so. Although not everyone notices microstutter, some say it's total nonsense, and others simply think those people are crazy because they don't notice it. Adding more cards generally increases microstutter but it shouldn't get to a noticeable level with proper drivers.

And I see that you are only going to put two cards in there. Well performance wise the 7990 should beat dual Titans if you are limited to two cards. Although if you are building two rigs I don't think it could hurt to build one with each setup. biggrin.gif

Although if you could have three cards in there then like I said tri Titans or 7970's would make a beastly setup.
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post #6 of 21
The last year with quad 7970 i had only problem with skyrim. It doesnt scale at all after 2 gpus. Otherwise i dont have any other problem.

I dont gaming anymore with my 4 7970 but lately focus a lot on the mltigpus and they offer some great optimizations. You should ask tsm or karlitos for more informations
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post #7 of 21
Thread Starter 
Quote:
Originally Posted by ehpexs View Post

The fewer GPUs the better, in reality nVidia seems to have better support for games like iRacing. The only advantage AMD has in this is Raw power for the few games that work properly with 4 cards.
I bet, but still I thought it would be pretty cool to do 7990's in a build or something tongue.gif
I just hope these 7990 drivers will be out soon, after it is out i'd like to see what people are talking about and then decide I guess what I will do.
Quote:
Originally Posted by icehotshot View Post

I will say this is going to be a sick setup! I wish I had the budget for something like that right now it would be pretty epic.

The driver to fix the microstutter should be out in the next month or so. Although not everyone notices microstutter, some say it's total nonsense, and others simply think those people are crazy because they don't notice it. Adding more cards generally increases microstutter but it shouldn't get to a noticeable level with proper drivers.

And I see that you are only going to put two cards in there. Well performance wise the 7990 should beat dual Titans if you are limited to two cards. Although if you are building two rigs I don't think it could hurt to build one with each setup. biggrin.gif

Although if you could have three cards in there then like I said tri Titans or 7970's would make a beastly setup.
Thanks! Well since this build will be a very long process i'm not going to be able to do both at one time, probably just one to start then go for a second one when I can.
That's good I can't wait to see what everyone is saying about the driver
Yeah that's what worries me, I tend to believe the people thatdue to the multiple GPU's that there WILL be some form of microstutter, as long as the drivers work then all is good.
yeah triple titan would be just complete overkill to me honestly, and a second reason being that if i go with 3 titans, id want to go with 3 7990's because it will all look the same, but it's impossible to have 3 7990's in a single build.
I plan to build one build at a time, both will have everything the same except for GPU's, should I start with a titan build or 7990 build? tongue.gif
and if you'd like to go for a build like this, i don't mind sharing the spec list.
post #8 of 21
Quote:
Originally Posted by DawnBladeDN View Post

I was wondering what would win?
x2 Titan's in SLI
x2 7990's in Quad-Crossfire
I'd like to know about the pros and cons of each setup, since the titan is a single GPU card and the 7990 is a dual GPU card, there can be problems with scaling on 2 7990's, but wouldn't it be a faster setup regardless than a sli titan setup?
As for resolution, lets say this setup will be used for a triple monitor build, along with all cards being watercooled.


I have the quad 7970 setup and at a triple monitor resolution, the 4th GPU scales well.
Quote:
Better frametimes than the 7990 (until their new driver gets released to address the issue although quadfire would most likely have more microstutter anyways than sli even with this driver).

The micro-stutter /frame rated reviews are about the 2 x GPU crossfire. Adding cards # 3 &4 take the micro stutter problem out of the equation. I have built a Quadfire machine every 9 months since 2008 (or since it was viable) and adding a third and or fourth card removed micro-stutter every single time.(the library of machines can be found in my signature and profile) This is an observation by other review site as well like Tom's.

I have graphed and charted the vast majority of titles with quadfire including recording frame times as well as rates and at the resolution you are playing at, I would (and have) go with the 4 x 7970 WC setup.
That is my hands on experience and opinion.

Hope it helps smile.gif
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post #9 of 21
Quote:
Originally Posted by DawnBladeDN View Post

I plan to build one build at a time, both will have everything the same except for GPU's, should I start with a titan build or 7990 build? tongue.gif
and if you'd like to go for a build like this, i don't mind sharing the spec list.

I honestly can't answer that. Quad gpus is awesome but 6gb vram is too.......and the word Titan biggrin.gif

And as for me building one of these it would definitely not even be considered until a few years down the road from now when I will have some extra cash flowing in.
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post #10 of 21
Thread Starter 
Quote:
Originally Posted by icehotshot View Post

I honestly can't answer that. Quad gpus is awesome but 6gb vram is too.......and the word Titan biggrin.gif

And as for me building one of these it would definitely not even be considered until a few years down the road from now when I will have some extra cash flowing in.
Lol maybe i'll start with a titan build for the performance reasons, but if that 7990 deal for 8 games ends soon after i start building, then i'll definitely go for 7990's to begin tongue.gif
Well it's all about collecting parts, you don t need to have titans, you dont need the amount of cards used in my list, you dont need to go x79, there was many optimizing that I did with these builds before deciding a setup, its all about preference, you can take the list if you want and modify it to you liking as a dream rig.
Quote:
Originally Posted by sugarhell View Post

The last year with quad 7970 i had only problem with skyrim. It doesnt scale at all after 2 gpus. Otherwise i dont have any other problem.

I dont gaming anymore with my 4 7970 but lately focus a lot on the mltigpus and they offer some great optimizations. You should ask tsm or karlitos for more informations
Thank you for the info. I will ask them for more info, much appreciated smile.gif
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