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Another MSI AMD Radeon HD 6950 OC Twin FrozR II?

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January 29, 2012 11:18:01 PM

Hey everybody, :hello: 
I’m new in town and enjoying all the info. :D 

So I have this gaming PC:

ASUS Crosshair IV Formula / AMD Phenom II X6 1090T @ 3.7GHz / MSI AMD Radeon HD 6950 OC Twin FrozR II 2048MB GDDR5 / 16GB of RAM.

And I was thinking of putting it up to 4GB of graphics memory by getting a second MSI AMD Radeon HD 6950 OC Twin FrozR II in crossfire. And installing a 1000W-1200W PSU.

Is it worth me doing that? :heink: 

Or should I just save up and get a high end 6990 4GB? The MSI AMD Radeon HD 6950 OC Twin FrozR II is a LOT cheaper and if I can get 4GB for a much lower price, I'd like that. I read the 6990 is very loud too...

And is there a difference between a 2GB Graphics Card and the 4GB Graphics Card, performance wise when talking about gaming in 2012?

Thanks in advance!
a c 92 U Graphics card
a b À AMD
January 29, 2012 11:21:26 PM

the 2 6950 is a better choice. the 6990 is 2 underclocked 6970s taped together.

and the memory won't change as crossfire will split the memory in game to both gpus so total memory will be unchanged.

And 2 gb is plenty for gaming in the near future as right now we are not even using 1 gb of vram in games at 1080p.

you also don't need a 1000w psu for crossfire 6950s. 750w is enough.
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a b U Graphics card
January 30, 2012 12:25:38 AM

^^ why type it when somebody else has?
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a c 181 U Graphics card
January 30, 2012 2:22:37 AM

^^ Why answer when someone else has? You would be better off with the two 6950's or wait and get the 7950's with 3GB of Vram.
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a c 109 U Graphics card
a b À AMD
January 30, 2012 2:28:45 AM

If you are going to crossfire, get another twinfrozr iii 6950.
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a b U Graphics card
January 30, 2012 2:38:37 AM

DM186 said:
^^ Why answer when someone else has? You would be better off with the two 6950's or wait and get the 7950's with 3GB of Vram.

I was merely stating that for myself in agreement with the previous post
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a c 181 U Graphics card
January 30, 2012 2:56:23 AM

FlintIronStagg said:
I was merely stating that for myself in agreement with the previous post


I know what you were doing. I thought it was funny so I had to be funny to. No put downs just respect.
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January 30, 2012 6:04:46 PM

Thanks for the all the answers. :) 

Yeah I heard the 6970 is not too far away from the 6950.

Quote:
''the 6990 is 2 underclocked 6970s taped together''
:lol: 

It's just that I already have an MSI Radeon 6950 2GB Twin Frozr II and really like it and wouldn't mind getting another for playing on max settings.

If I plan to play @ 2560x1600 does the 4GB have an advantage over the 2GB or absolutely none?

So a 750W will be fine for 2 6950 in crossfire?...(Coolermaster Gx 750W will do then)...Someone told me I need 1000W-1200W... :heink: 
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a c 92 U Graphics card
a b À AMD
January 30, 2012 6:07:47 PM

I'd get an corsair 750w instead of coolermaster because they are better.

also you should have no problems on 2gb.
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a c 181 U Graphics card
January 30, 2012 6:33:56 PM

Corsair, Antec, Seasonic, and a XFX and make sure that they are 80+ type. These are the brands of PSU's to get.
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January 30, 2012 9:42:23 PM

Thanks for the PSU advice.

So if a game uses 2GB of memory it will take 2GB from each card or 1GB from each to make 2GB? :heink: 
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a c 181 U Graphics card
January 31, 2012 12:06:58 AM

When the games start using 2GB of Vram then it will use 2GB of Vram. If you have 2 cards with 2GB of Vram on the two cards then you use just 2GB of Vram you can't add both cards to get 4GB of Vram.
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a c 92 U Graphics card
a b À AMD
January 31, 2012 1:20:19 AM

also the 6990 doesn't really have 4 gb, it has 2x 2 gb which can only be used as 2 gb in games.
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January 31, 2012 4:04:42 PM

esrever said:
also the 6990 doesn't really have 4 gb, it has 2x 2 gb which can only be used as 2 gb in games.

Really? :ouch:  Wow not really worth getting a 6990 then if you can just double up in crossfire.

So I'm not quite getting...if I have 2x2GB (4GB in crossfire) I still only have a max 2GB, even if some day a game may require 3GB or 4GB of VRAM? I have been checking some other forums and it seem so...they mention words like ''mirrored'' and ''effectively ''...I am still new to gaming PCs and trying to understand.
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a b U Graphics card
January 31, 2012 4:09:39 PM

All I really know is that with CrossfireX and SLI, VRAM does not add together. I can't explain why, that is just how it works. 2 2GB cards still means that you only have 2GB VRAM total. But when games start to use 3-4GB of VRAM, modern cards will be so outdated anyways that the amount of VRAM they have wont be holding them back, their speed and power will.

If you are running at 1080p or less, you won't need more than 2GB. 1GB would probably be enough.
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January 31, 2012 5:24:41 PM

trogdor796 said:
All I really know is that with CrossfireX and SLI, VRAM does not add together. I can't explain why, that is just how it works. 2 2GB cards still means that you only have 2GB VRAM total. But when games start to use 3-4GB of VRAM, modern cards will be so outdated anyways that the amount of VRAM they have wont be holding them back, their speed and power will.

If you are running at 1080p or less, you won't need more than 2GB. 1GB would probably be enough.


Oh thanks for clearing up! :sol: 

I think I will hold on to my single 2GB 6950 as it perform very well. :ange: 

It’s just that some games sill lag (not every time but in certain places) but that seem to be bad programming…But Crysis runs so smooth and it's one of the most demeaning games out there.

That’s what I though, I get 4GB now (and can’t really put it to good use) but soon it might be too old to work with newer games. With Windows 8 coming out soon and 2013-2014 ‘’Next gen games’’ who know?

Thanks for all the answers!! :D 
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a b U Graphics card
January 31, 2012 9:08:40 PM

Performance isnt all about vram.
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a c 109 U Graphics card
a b À AMD
February 8, 2012 5:27:04 AM

Cooler Master said:
Oh thanks for clearing up! :sol: 

I think I will hold on to my single 2GB 6950 as it perform very well. :ange: 

It’s just that some games sill lag (not every time but in certain places) but that seem to be bad programming…But Crysis runs so smooth and it's one of the most demeaning games out there.

That’s what I though, I get 4GB now (and can’t really put it to good use) but soon it might be too old to work with newer games. With Windows 8 coming out soon and 2013-2014 ‘’Next gen games’’ who know?

Thanks for all the answers!! :D 

If you aren't playing above 1080P 2gb of vram isn't needed.
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a b U Graphics card
February 8, 2012 6:54:52 AM

It depends on what games op is playing. With bf3 it uses over 1gb. Ive also seen metro use more than 1gb as well
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a c 181 U Graphics card
February 8, 2012 11:07:39 PM

The new AMD 7xxx series come with 3 gigs of Vram. I suppose if the games start using more Vram then the cards will have to adjust also.

Like what everybodys else is saying now if your res is over 1920 x 1200 plus more than one monitor the more Vram the better.
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