gtx 780ti on pci express 2

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claww

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Jan 12, 2014
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hi im planning to buy a gtx 780ti but my motherboard is only pci express 2 x16. would that bottleneck my gpu or not? any help would be appriciated
 
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jb6684
That's the recommend power, again they are quoting "Peak Power".....

Here are a couple of reviews showing the "Continuous Power" need for a full system w/GTX 560Ti is more like 350watts... (that's before you take power supply efficiency into account, which would bring it much closer to 300watts doing the math on 80--85% efficient supplies)

http://www.techspot.com/review/359-nvidia-geforce-gtx-560ti/page11.html
http://www.bit-tech.net/hardware/graphics/2011/01/25/nvidia-geforce-gtx-560-ti-1gb-review/8
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jb6684

jb6684

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I haven't see any review that would indicate PCI-E 2.0 @ x16 would slow you down.....

First question I would ask is: do you have a proper 600---650watt power supply? (Corsair, XFX, Antec, or Seasonic). Post what you have to see if the new board will work or fail to....
 
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claww

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Jan 12, 2014
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my build consists of a intel core i5-2300 2.8 ghz
8gb ddr3 ram
gtx 560ti SC
600W power supply
an intel DH6BE mother board
 
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claww

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Jan 12, 2014
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i have a 600W power supply....i think its brand is cooler master
 
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jb6684

jb6684

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Most Cooler Master are rated at "Peak Power", so unless you Only intend to game for 10 or 15 mins, they will not do....

Rule of Thumb, divide "Peak Power" by 2 to get a true "Continuous Power" rating.... so, that Cooler Master is more like a 300watt supply. It would not be suitable to powering a GTX 780TI
 
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claww

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Jan 12, 2014
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Hmm....that cant be right because my 560ti here requires atleast 500W of power and my PSU has been running it for the past 2.5 years
 
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jb6684

jb6684

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That's the recommend power, again they are quoting "Peak Power".....

Here are a couple of reviews showing the "Continuous Power" need for a full system w/GTX 560Ti is more like 350watts... (that's before you take power supply efficiency into account, which would bring it much closer to 300watts doing the math on 80--85% efficient supplies)

http://www.techspot.com/review/359-nvidia-geforce-gtx-560ti/page11.html
http://www.bit-tech.net/hardware/graphics/2011/01/25/nvidia-geforce-gtx-560-ti-1gb-review/8
 
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