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GPUs don't work in pcie x4 slot - Page 2

post #11 of 22
Thread Starter 
Quote:
Originally Posted by Marioshi View Post

7770s that need a crossfire bridge are a bit of an odity arent they?
Anywho, could you get L shaped sata cables and fit the second video card in the bottom? Its a cheaper solution than buying a new board anyway.

Why oddity? All 7770s in xfire need a bridge. All of my sata ports are used right now so I couldn't fit L shaped cables into them. Also, it wouldn't solve the problem since the pcie x4 slot is the one not working.

Quote:
Originally Posted by sdahlbe View Post


This makes sense and explains your problems. Your mobo is just not made to xfire with current hardware. Do a lot of research before buying a new board, some boards support 8x / 8x while a lot of newer ones support 16x / 16x

 

I know, I was a was an a budget when I bought the mobo. It seemed like someone else on the interwebs had the same problem. He had my motherboard and tried xfiring two 7770s which didn't work. Oh well. I'll just put them on ebay and buy a 7950 or 7970.

post #12 of 22
Quote:
Originally Posted by noobhell View Post

Why oddity? All 7770s in xfire need a bridge. All of my sata ports are used right now so I couldn't fit L shaped cables into them. Also, it wouldn't solve the problem since the pcie x4 slot is the one not working.

Oh, my bad, I thought the 7770 and 7750 would be the same but they are not. My 7750 does not have a crossfire bridge connector, and AMD says I dont need one smile.gif

Looks like a new mobo or a new video card is in order.

You could probably sell the 7770s and buy a single card that performs as well or better, no?
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post #13 of 22
Quote:
Originally Posted by noobhell View Post

Quote:
Originally Posted by tsm106 View Post

Are you up to date on the bios? Is the x4 run off the southbridge?
Yes, my bios is vers f6. It should be running off the nb if a graphicscard is in it. (Only the upper pcie x1 slot is not capable of having a graphicscard)
Quote:
Originally Posted by sdahlbe View Post

The fact that you reinstalled windows pretty much eliminates the drivers being the cause of your problem.

Also, since you've never touched the 3d game options within CCC, the defaults are more than likely fine.

If I understand your original post correctly, you are saying that you cannot use the x4 slot that you are SUPPOSED to use, so instead you put the card into a x1 slot? Because according to your mobo specifications, you have: one PCI-E x16 slot, one PCI-E x4 slot, and two PCI-E x1 slots. So if you arent using the x4 slot for your second card, then that is the cause of your problem.


no I didn't put the card into the x1 slot since it doesn't fit.  Just when a card is in the pciex4 slot, games crash. Until now my build has been one catastrophe with about 6 rmas.


EDIT: I contacted Gigabyte and the guy said the 7770 will only work in a pcie x8 slot or higher. I've never heard of something like that, I thought you could theoretically run one in a x1 slot just much slower. Is this true?


1. The board would need a pcie switch, a PLX of some sort to split the lanes out of the x16 available into something odd ball like x12/x4. It's a giant hint that it doesn't have a splitter because the x4 is just x4. This makes me wonder why x4, and where does that x4 actually connect? How many lanes are available to the 970 chipset natively? I highly doubt its x16 + x4...

2. How would Giga know it only works in x8? Cards will work in any slot. It's really convenient that you don't have an x8 slot, he could have just told you the truth, sorry that x4 is off the southbridge or something.
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post #14 of 22
Thread Starter 
Quote:
Originally Posted by tsm106 View Post


1. The board would need a pcie switch, a PLX of some sort to split the lanes out of the x16 available into something odd ball like x12/x4. It's a giant hint that it doesn't have a splitter because the x4 is just x4. This makes me wonder why x4, and where does that x4 actually connect? How many lanes are available to the 970 chipset natively? I highly doubt its x16 + x4...
2. How would Giga know it only works in x8? Cards will work in any slot. It's really convenient that you don't have an x8 slot, he could have just told you the truth, sorry that x4 is off the southbridge or something.

1) It should connect to the sb using an expansion card, to then nb using a graphicscard. According to this wikipedia article the 970 chipset supports crossfire with x8+x8 pcie slots. The only slot where it said in the manual that it only works with expansion cards is the top pcie x1 slot. The rest should be capable of switching. I can use the graphicscard in the x4 slot but games will crash using it. Also, graphics are not fluid when used. The framerate in dirt 3 is 60fps+ but the game slows down and gets faster every 1-2secs. Same in most games.

 

2) Yeah I also don't know. As I asked he replied instantly and told me that that doesn't work. I also thought videocards were compatible with any. The weird thing about this board is that rev. 1.0 and 1.1 support xfire (which I have) while rev 3.0 doesn't support it, but I do not see any changes in pcie lanes.

 

Quote:
Originally Posted by Marioshi View Post


Oh, my bad, I thought the 7770 and 7750 would be the same but they are not. My 7750 does not have a crossfire bridge connector, and AMD says I dont need one smile.gif
Looks like a new mobo or a new video card is in order.
You could probably sell the 7770s and buy a single card that performs as well or better, no?


Yeah I'm prob just going to buy a 7970 instead smile.gif

post #15 of 22
Quote:
Originally Posted by noobhell View Post

1)

Yeah I'm prob just going to buy a 7970 instead smile.gif

I second that opinion. I just bought two smile.gif
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post #16 of 22
If you don't mind doing a bit of overclocking, you can save yourself a lot of money and get a good 7950 (at least 3GB + dualfan)

I got sapphire 7950 on a sale for 289 with 4 games for free, OC'd it to 1100/1500 with little effort, and I can probably push it farther with some trial and error. Point being you can save yourself over 100 bucks
post #17 of 22
Right from the AMD page: "Support for one Radeon HD Graphics boards"
http://www.amd.com/us/products/desktop/chipsets/9-series-integrated/Pages/amd-970-chipset.aspx

And from this Wiki article: "One physical PCIe 2.0 x16 slot"
http://en.wikipedia.org/wiki/AMD_900_chipset_series#970


Where did you buy the board from? Newegg's description does claim Crossfire but AMD themselves say the 970 chipset only supports one GPU, so you could argue that and maybe get a free replacement through Newegg. They will probably just ask you to pay shipping at least one way. Product Link: http://www.newegg.ca/Product/Product.aspx?Item=N82E16813128553
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post #18 of 22
Thread Starter 
Quote:
Originally Posted by sdahlbe View Post

If you don't mind doing a bit of overclocking, you can save yourself a lot of money and get a good 7950 (at least 3GB + dualfan)
I got sapphire 7950 on a sale for 289 with 4 games for free, OC'd it to 1100/1500 with little effort, and I can probably push it farther with some trial and error. Point being you can save yourself over 100 bucks

I don't have anything better to wish for xmas, so I will probably be going with a 7970 for 460$. I'm planning to get a VTX3D 7970 X-Edition so I can overclock it.
Quote:
Originally Posted by axipher View Post

Right from the AMD page: "Support for one Radeon HD Graphics boards"
http://www.amd.com/us/products/desktop/chipsets/9-series-integrated/Pages/amd-970-chipset.aspx


And from this Wiki article: "One physical PCIe 2.0 x16 slot"
http://en.wikipedia.org/wiki/AMD_900_chipset_series#970



Where did you buy the board from? Newegg's description does claim Crossfire but AMD themselves say the 970 chipset only supports one GPU, so you could argue that and maybe get a free replacement through Newegg. They will probably just ask you to pay shipping at least one way. Product Link: http://www.newegg.ca/Product/Product.aspx?Item=N82E16813128553

I bought it in a store in Switzerland. Gigabyte themselves claim that the rev. 1.0+1.1 board is crossfire compatible. I could probably complain and get my money back from gigabyte for false advertising, but if I am honest I don't feel like it. My build already got delayed ca. 6months by components not showing up due to the floods and a 2 month long rma by asus. I just finally want to have a working computer.
post #19 of 22
Well if you can switch to a single high end card then you won't have to worry about the crossfire issue. Hopefully things work out for you in that regard
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post #20 of 22
Quote:
Originally Posted by noobhell View Post

Quote:
Originally Posted by tsm106 View Post

1. The board would need a pcie switch, a PLX of some sort to split the lanes out of the x16 available into something odd ball like x12/x4. It's a giant hint that it doesn't have a splitter because the x4 is just x4. This makes me wonder why x4, and where does that x4 actually connect? How many lanes are available to the 970 chipset natively? I highly doubt its x16 + x4...

2. How would Giga know it only works in x8? Cards will work in any slot. It's really convenient that you don't have an x8 slot, he could have just told you the truth, sorry that x4 is off the southbridge or something.
1) It should connect to the sb using an expansion card, to then nb using a graphicscard. According to this wikipedia article the 970 chipset supports crossfire with x8+x8 pcie slots. The only slot where it said in the manual that it only works with expansion cards is the top pcie x1 slot. The rest should be capable of switching. I can use the graphicscard in the x4 slot but games will crash using it. Also, graphics are not fluid when used. The framerate in dirt 3 is 60fps+ but the game slows down and gets faster every 1-2secs. Same in most games.

2) Yeah I also don't know. As I asked he replied instantly and told me that that doesn't work. I also thought videocards were compatible with any. The weird thing about this board is that rev. 1.0 and 1.1 support xfire (which I have) while rev 3.0 doesn't support it, but I do not see any changes in pcie lanes.

Now you know not to trust Giga. Bold lies on the advertising lol, and in their service too.
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