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790X or 790FX?

post #1 of 12
Thread Starter 
Hey guys, I'm thinking about downgrading my current board, more like trying to get a board that has an x16 slot on the top of the board, instead of on the bottom, and I was wondering, which chipset would be better for my system? I might decide to add a card for physx/folding later, so would the extra pci-e lanes come in handy on the 790fx? I also noticed that on the 790x board it only has a 4-pin cpu power, instead of an 8-pin. Would this reduce my overclock on my cpu? Would I just be better off going with a 790fx board?

And which 790fx board would be best? I really like the msi 790fx board, and I can still get my hands on one. What do you guys think?

EDIT: I'm mostly wondering whether or not the 4-pin will limit my overclocking on my unlocked 720. It draws quite a lot of power, and I don't want it to not be enough. But I would rather save money and get the 790x, because it is more cost effective at this point.
Edited by Behemoth777 - 1/12/11 at 9:39pm
     
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post #2 of 12
Thread Starter 
Any idea guys? I'd like to order this board by tonight so it gets here asap.

Will the 4-pin cpu power on the 790x hold back my oc on my unlocked 720?
     
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post #3 of 12
790fx is more oc friendly and you get more pcie lanes. i would imagine that the lack of an 8 pin would limit you at some point
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post #4 of 12
8/4 pin power is a very good indicator of the use for which a board is intended.

If OC'ing is important, I reccomend 8 pin power always.
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post #5 of 12
I'd go for the 790FX as it does overclock a bit better, in theory.
post #6 of 12
Thread Starter 
I already placed my order for the asus 790x board, I figured that this board would be good enough to oc to where I wanted, without going overkill. I really don't have a need for the 790fx, as I only plan to ever have a single video card, and the 790x board has 8 phase power with a good looking heatsink on it and overclocking features in the bios. I doubt this board was made without overclocking in mind.

Plus, I think I heard awhile ago that 8-pin is really only needed if you are going to do extreme overclocking, and that 4-pins are okay for air/water.
     
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post #7 of 12
Unless you've got a monitor with megalodon 2560x1600 resolution and lots and lots of AA, even a GTX 580 won't be affected much by an x8 PCI-E slot.
790X vs. 790FX overclocking, it actually turns out to be fairly equal when it comes to both bus clock & multiplier OC-ing. Only newer chipsets (i.e. 890) start to make differences. Then again, it may also depend on board/BIOS features.
post #8 of 12
Thread Starter 
Quote:
Originally Posted by xd_1771;12000945 
Unless you've got a monitor with megalodon 2560x1600 resolution and lots and lots of AA, even a GTX 580 won't be affected much by an x8 PCI-E slot.
790X vs. 790FX overclocking, it actually turns out to be fairly equal when it comes to both bus clock & multiplier OC-ing. Only newer chipsets (i.e. 890) start to make differences. Then again, it may also depend on board/BIOS features.

Well, I went with the different board for more reasons than just the x8 pci-e lane. It is a side grade for myself so I can resist buying anything else for my system for awhile. lol

But yeah, I figured 790x vs 790fx wasn't that big of a deal, especially since the 790x board I got has 8 phase power, just like the 790fx board.
     
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post #9 of 12
I am not sure why you want to downgrade, but I wish you good luck. Hope you enjoy your board when you get it.
post #10 of 12
its actually a 5 phase not 8. just like the 790fx-gd70.
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shoebox
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