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2x5970+GTS250? or 5970+5870+GTS250?

Last response: in Graphics & Displays
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June 24, 2010 11:33:20 PM

Hello all,

Ok so I have been mulling this for a while and could use some fresh insights on the matter.

Using a MSI 890FXA-GD70 AM3 AMD 890FX SATA 6Gb/s USB 3.0 ATX AMD Motherboard.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

I was wondering if I could push two 5970's and a GTS250 for physx as the board has 4 pcie 2 x 16 slots.

assuming a 425W power draw under full load per 5970 for a total of 850W + 235W for the GTS 250 and the 1090T CPU at 125W

I am looking at power draw of 1210 give or take. I have a 1500W PSU in mind to accommodate all this plus room for OC.

That being said, power isn't so much my concern as I will work and rework component requirements and adjust as needed that is simple math.

My concern is this:

I know there is a ceiling beyond which one would just be throwing money away as far as graphics performance goes. As I understand it 2x5970 is that ceiling. I happen to have a GTS250 lying around and started wondering if I could throw it into the mix. I know about the Nvidia block on Phyx while using ATI but I have a work around just wondering if anyone has tried this and what those results may be.

I also realize that Physx titles are few and that there is Havoc for ATI but hey since I already have it I figured why not try it?

Other thoughts:

Could a 5970 and 5870 in Xfire plus the GTS250 be a better way to go?

I have also read that the 5970's are under clocked and run like 2 5850's so could it be better to run 3 x 5870's in Xfire plus GTS250 to get full performance out of ATI cards? I realize 2x 5970 is like 4 cards plus the GTS250 for a total of 5 should be better than 4 cards total but hey no harm in making sure...

In case you are wondering I will be water cooling the entire system with a split loop (Video cards on one line, CPU etc. other line) dissipating 2000W of heat.

P.S. Please keep it serious, comments on how much I make you make or don't make are not the topic here this is about the Tech let's keep it that way. Thank You.
June 25, 2010 12:47:48 AM

Good point what resolution will you be using? Also I like this MoBo better the msi board only has 4+1 power phase which is a older type. Consider this board http://www.newegg.com/Product/Product.aspx?Item=N82E168.... Two 5970s are tempting but it is my understanding the the scaling is not worth the expense. You asked "Could a 5970 and 5870 in Xfire plus the GTS250 be a better way to go? " I think maybe if you want all the GPU money can buy. If your resolution is 1920x1080 that setup is going to be overkill. Here is your monitor if you want to use all that GPU power http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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July 3, 2010 3:27:03 AM

rolli59 said:
The 5970 will not draw 425 watts each. http://www.xbitlabs.com/articles/video/display/gpu-powe...
You should calculate your power requirements again!
What resolution are you planning on playing at.


1920x1080 is the resolution I am using

Pushing 2 ASUS VW246H LCD's and thinking of adding a third.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

I appreciate the responses please keep them coming. I am researching the power draws again.

Topper, the link you posted is not pulling up or the item was removed, I have long been an Asus fan but I am still not sure about their Asus Formula IV, I had mixed feelings that was why I was considering MSI. I happen to have the Asus OC Station so that's a plus if I use the Formula IV. I want the new 890 Chipset and I am keeping an open mind if you would like to re-post and suggest a certain motherboard and why.

Cheers.

P.S.- I am leaning towards the the 5970+5870+GTS250 option.
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July 3, 2010 3:32:25 AM

rolli59 said:
The 5970 will not draw 425 watts each. http://www.xbitlabs.com/articles/video/display/gpu-powe...
You should calculate your power requirements again!
What resolution are you planning on playing at.



Rolli Thanks for the link my figures were not derived from accurate sources it seems but that is why I embarked on this journey here in hopes to cut through a lot of the fluff that's floating around out there. Perhaps there is hope for my Corsair 850HX yet eh?
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