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Questions for those who know about PCIe slots/speeds/video cards

#1NicodimusPosted 8/28/2013 3:50:16 PM
Got a new GTX 770 yesterday (yay!)

I had two issues upon installing it, and I already solved the first one with some help. This next one, I have no idea what else to do, so I thought I would ask here.

Check this out: http://i.imgur.com/4gvXIek.jpg

My card can run at 3.0 x16, but it is only running at 3.0 x4. Weird, right?

So, I went into the BIOS under PCIe config, and tried Gen2, Gen3, and Auto settings. Same result. I pulled out the motherboard manual. I have the card in the top slot, which it says is PCIe x16. I have the latest GPU drivers and the latest version of BIOS.

Questions:

#1 Any idea how to get the card to run at 3.0 x16, or what might be making it stay at x4?

#2 If I can't get to x16, how big a deal is it, performance-wise?

Thanks.
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#2Lemur_HPosted 8/28/2013 3:53:16 PM
I'm gonna guess "Power saving features may affect the results displayed."
#3sknmakPosted 8/28/2013 4:14:51 PM
Nicodimus posted...

Questions:

#1 Any idea how to get the card to run at 3.0 x16, or what might be making it stay at x4?

#2 If I can't get to x16, how big a deal is it, performance-wise?

Thanks.



Congrats on your new GPU.

#1: Set the BIOS to Gen3 of course. It won't stay at x4 when you are actually using the card. If you aren't doing anything heavy it will go into a power saving mode [Idle Mode pretty much]

#2: You don't want to go below x8, but I believe you card is simple in a idle like mode. Just press the "Question mark" [?] next to the Bus Interface info. You should see the info quickly jump to x16 @ 3.0.

Otherwise you can run a game and check the Bus Interface info.
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#4Nicodimus(Topic Creator)Posted 8/28/2013 4:17:15 PM
Lemur_H posted...
I'm gonna guess "Power saving features may affect the results displayed."


I have every power saving feature I can find in Windows and the BIOS disabled.
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My pets: http://imgur.com/a/P9VGU
#5Nicodimus(Topic Creator)Posted 8/28/2013 4:22:45 PM
sknmak posted...
Nicodimus posted...

Questions:

#1 Any idea how to get the card to run at 3.0 x16, or what might be making it stay at x4?

#2 If I can't get to x16, how big a deal is it, performance-wise?

Thanks.



Congrats on your new GPU.

#1: Set the BIOS to Gen3 of course. It won't stay at x4 when you are actually using the card. If you aren't doing anything heavy it will go into a power saving mode [Idle Mode pretty much]

#2: You don't want to go below x8, but I believe you card is simple in a idle like mode. Just press the "Question mark" [?] next to the Bus Interface info. You should see the info quickly jump to x16 @ 3.0.

Otherwise you can run a game and check the Bus Interface info.


I press the question mark, and a render test comes up, but nothing changes with the Bus reading. I've also popped out of Unigine Heaven with GPU-Z open, and also run a system-wide stress test with AIDA64, and have never seen it go above x4.

I guess as long as I don't notice bad performance I shouldn't worry too much about this?
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My pets: http://imgur.com/a/P9VGU
#6gastamanPosted 8/29/2013 9:44:43 AM
What motherboard do you have?
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//Intel// Core i7 2600k @ 4.2 //Gigabyte// Z68X-UD7-B3 //MSI// 3x GTX 580 Lightning SLi
//Corsair// 650D / H100 / 120 GB Force 3 / 12 GB Dominator / AX1200
#7Nicodimus(Topic Creator)Posted 8/29/2013 9:48:44 AM
ASUS Z87 Pro.
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My movie and gaming room: http://imgur.com/a/IjWr1
My pets: http://imgur.com/a/P9VGU
#8gastamanPosted 8/29/2013 10:43:06 AM
Have you checked in the bios in the advanced menu, under DMI configuration?
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//Intel// Core i7 2600k @ 4.2 //Gigabyte// Z68X-UD7-B3 //MSI// 3x GTX 580 Lightning SLi
//Corsair// 650D / H100 / 120 GB Force 3 / 12 GB Dominator / AX1200