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· Efficiencycionado
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the links are not working
 

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I know for a fact that the 790FX does not have onboard graphics, I'm not sure about the 790X, but the 790GX does.

No onboard graphics would be able to utilize hybrid-crossfire, though, because you have a 4000 series card, and the onboard is a 3300.
 

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Neither has onboard graphics.

The 790FX allows you to run 2 cards in full 16x/16x Crossfire, where the 790X is limited to 8x/8x. That's the biggest difference.
 

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Discussion Starter · #6 ·
Sorry , what crap links.

http://www.giga-byte.com.au/Products...A-MA790XT-UD4P

http://www.pccomponentes.com/GIGABYT...OCKET_AM3.html

Quote:


No onboard graphics would be able to utilize hybrid-crossfire, though, because you have a 4000 series card, and the onboard is a 3300.

This was´nt my idea, I was thinking more when the load is low it switches off the graphics card and uses the onboard .

I just found this board as well

http://www.asus.com/products.aspx?mo...49&l3=639&l4=0

Which might suit me even better. 780g chipset (HD 3200)DDR 2 @ 1066 and it looks like it would take my X2 while I scrape together for the Phenom II
 

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Quote:


Originally Posted by Shift.
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Neither has onboard graphics.

The 790FX allows you to run 2 cards in full 16x/16x Crossfire, where the 790X is limited to 8x/8x. That's the biggest difference.

Almost right, Crossfire is 16x/8x on 790x boards.

Unless you are using a 4870x2, the 8x shouldn't bottleneck you.
 

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Quote:


Originally Posted by videoman5
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Almost right, Crossfire is 16x/8x on 790x boards.

Unless you are using a 4870x2, the 8x shouldn't bottleneck you.

That is also partially true.

The first PCIe slot operates at the full 16x, while the second slot operates at 8x. Now, once in Crossfire mode, both slots will run at 8x.

Quote:


790X

* Codenamed RD780, final name revealed to be "AMD 790X chipset" [13]
* Single AMD processor configuration
* Two physical PCI-E x16 slots (one 16x and one 8x electrically. In Crossfire mode, both will revert to 8x electically)

 

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The 790X is basically a 790GX but without the integrated graphics. Technically the FX is the better of the three, but in practical terms the only real difference is that the FX can do 16x/16x Crossfire while the other two can only do 8x/8x.
 
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