PCI-e 3.0 card's compability with PCI-e 2.0 mobo

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feno

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Jun 26, 2013
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Hi

Basiaclly I want to swap my old nVidia quadro FX580 for a new GTX 660, but I've noticed that my old mobo has PCI-e 2.0 x16 slot, but GTX 660 is made for PCI-e 3.0

I've also read that I can use the new GPU with my old mobo, but will there be a performance downgrade and is it worth it to use a GTX 660 with PCI-e 2.0?

Btw, my mobo is fujitsu siemens d2817-a1.
 
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feno

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Jun 26, 2013
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Yeah, I know, I'm not sure but I've been told that 500w PSU should be enough.

My CPU is Intel Core 2 Quad Q9550 @ 2.83ghz
 
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Novuake

Novuake

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Aug 27, 2011
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Yeah 500W is enough if its a decent unit. If you can post the specs on the side, photo preferably, then we can be sure, but it should be fine.
 
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F

feno

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Jun 26, 2013
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10,510


 
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feno

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Jun 26, 2013
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Sure, I was going to do that anyways. But after I upgrade my PSU for 500w one, and then my current GPU for a GTX 660, It'll run normally in a PCI-e 2.0 slot ? Thats basically all I need to know. I just want to buy my GPU and play games :D
 
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Novuake

Novuake

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Aug 27, 2011
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Yes, it will. Sorry in the habit of double checking everything.

Consider a GTX760 though, its much faster and should not be much more expensive from Newegg.
 
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coozie7

coozie7

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Jun 2, 2007
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Just butting in...
I'm running a HD7950 off a PCI-E 2.0 MB, no issues and AMD can be a little fussier than Nvidia on the PCI-E configuration.
Good points on the power supply, look for no more than 550 Watts from a good maker like: Antec, corsair, Silverstone, Pc Power and Cooling, OCZ, FSP or Seasonic.
Novuake makes a sensible point with the GTX760, as gamers We've never had so much power available for so (relatively) little, it's a little faster than my 7950 and that has no problems at high/very high/you have to be joking! settings on a single 1080 display.
If possible, try to overclock the CPU.
 
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feno

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Jun 26, 2013
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Well, thanks :D I'll definetly consider the GTX 760, already gathered some information about it and it seems that it was released just yesterday. So I guess I need to wait a bit until it'll be for sale in Eastern EU. It seems a very nice GPU for that price though. :)
 
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coozie7

coozie7

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Jun 2, 2007
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As always keep a close eye on the prices, we have already had several posters who (like you) live outside the USA/Western Europe and they are finding the 'old' GTX670 is a better choice-it's only slightly slower but in some countries can be a fair bit less expensive.
 
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