Gtx 780 in pcie 3.0 8x slot?

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gaarden2000

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Jul 25, 2014
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Hello Graphics part of tomshardware. I am going to buy a gtx 780 and an i5 4670k processor. However, i already have a pci express wireless network card. If i put in the wireless card, does that use up a pci express lane, and if so, how will the gtx 780 do in pcie 8x? I am going to be gaming on a 1680x1050 monitor, with a secondary monitor on 1280x1024. Will the 8x pcie slot allow enough bandwidth so that it wont suffer performance-wise?

Thanks in advance
Gaarden
 
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Vexillarius

Vexillarius

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You should be able to plug the wireless card into a x1 slot. That way it usually won't eat other slots' bandwidth. Knowing your exact mobo brand, model and revision would help to make sure.

That said, there are currently no single-GPU cards that are bottlenecked by having just 8 lanes (PCIe 2.0 or 3.0). It will function at full performance in a slot working at x8.
 
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MeteorsRaining

MeteorsRaining

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Correction: The GPU will still run at x16, WiFi won't take away those lanes.
 
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Vexillarius

Vexillarius

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Even if you plug the wireless card into one of the x16 slots? Not berating you, I'm genuinely curious.



I looked up the board, you can plug the wireless card into a x1 slot regardless.
 
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gaarden2000

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I will upgrade to a 1440p monitor in the future :)
 
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burdenbound

burdenbound

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Unless your getting a really good deal on a 780 look into the new GTX 970, it has better performance, cheaper, and more VRAM for the higher resolution (although I have found 3GB to be enough for 1440p with modern titles).
 
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gaarden2000

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I live in Denmark and the prizing has been around the same. I am going to buy the parts in a few days, so i will look into the prize when that time comes. thanks for the suggestion :)
 
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MeteorsRaining

MeteorsRaining

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Vexillarius, the x1 and x4 slots are wired to the MoBo's chipset, which has a multiplier. The x8 and x16 slots are wired to the CPU lanes. When we put a GPU in x16 slot and a WiFi card in x1, they both go through different chipsets, and are unaffected by one another.
PS: WiFi cards are x1 and putting them in x16 slot is not do-able, I've not tried, but I don't think that's a great idea as it will use CPU lanes.
 
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Vexillarius

Vexillarius

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That's what I meant though, put it in a x1 slot and it won't eat CPU lanes, in a x16 it will.
You can actually put a x1 in a x16 slot, I know that. And that would switch the top x16 slot with the GPU in it to x8. That was what the OP was asking I believe. That's assuming a true x16 slot, not a x16 slot that only has 4 (chipset) lanes.

In the end it's still a better idea to put it in a native x1 slot of course.
 
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