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post #521 of 580
You may have to start the render test in GPUz to get the PCIe state to kick up.

Also, there is a setting in the BIOS where you can manually select PCIe gen 1 2 or 3, maybe it was manually set to gen 2
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post #522 of 580
What software is shoving you PCIe 2.0?
post #523 of 580
thank you for your replies

@Steam
its GPU Z

@Mxthunder
i have done those tests many times but found same results. PCIe 2.0x16 for both cards.
in BIOS i had already forced PCIE to GEN3.
anyway i spent almost days googling this issue. came across a forum of rog.asus.com there they were discussing about the same problem but platform was x79 and some NVIDEA driver issue etc

the following link solved my problem.
http://forums.evga.com/tm.aspx?m=2063059

i had to manually force RMPcieLinkSpeed registry to use PCIE3 for each card as described in the link above and there it was. Now both cards are running at PCI3x16 and i am also feeling a bit satisfied. GPU Z is also showing it well now.

But i still cant understand, that fix was for sandy bridge CPUS that dont support PCIE3. IVY BRIDGE should have picked them at pcie3x16 by default. its hopefully because of NVIDEA driver thing? not really sure but cant really think about anything else as everything seemed fine.

some more info to add (as i didnt know that before). IVY bridge only supports few PCIE lanes 24 i think, so its not possible for two cards to run at PCIE3x16 = (16+16=32 lanes). That plx chip in this UP7 motherboard provided extra pcie lanes for both cards to run at pcie3x16.
post #524 of 580
Glad you found a fix, and thanks for the link
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post #525 of 580
my pleasure. thanks smile.gif
post #526 of 580
Anyone using this board for mining?
post #527 of 580
Quote:
Originally Posted by gregg1494 View Post

Anyone using this board for mining?

Yes. Few things, had to change PCIe to gen1, primary card can't be on a riser for some reason, doesn't matter if it's X16 to X16 or X16 to X1 in any slot on the board, it will not boot.

Other than that, I have 4 out of 5 cards running. Will be switching to Ubuntu today to get better hash rates and the 5th card detected. Currently running Windows 7 Ultimate.

Jeffinslaw
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post #528 of 580
Quote:
Originally Posted by Jeffinslaw View Post

Yes. Few things, had to change PCIe to gen1, primary card can't be on a riser for some reason, doesn't matter if it's X16 to X16 or X16 to X1 in any slot on the board, it will not boot.

Other than that, I have 4 out of 5 cards running. Will be switching to Ubuntu today to get better hash rates and the 5th card detected. Currently running Windows 7 Ultimate.

Jeffinslaw

I have 5 gpus running, I have changed PCIe to gen 1. I have all my cards on risers 1x to 16x it boots fine for me. But If i try to use the 1x slots that when things get messed up. Currently I am running all cards out of the PCIe 16x lanes.

3 r9 270s and 1 7990





This is what it says on gigabytes website


3 x PCI Express x16 slots, running at x16 (PCIEX16_1~3)
* For optimum performance, if only one expansion card is to be installed, be sure to install it in the PCIEX16_2 slot.

2 x PCI Express x16 slots, running at x8 (PCIEX8_1~2)
* The PCIEX8_1 slot shares bandwidth with the PCIEX16_1 slot and the PCIEX8_2 slot with PCIEX16_3. The PCIEX16_1/PCIEX16_3 slot will operate at up to x8 mode when the PCIEX8_1/PCIEX8_2 is populated.
(The PCIEX16 and PCIEX8 slots conform to PCI Express 3.0 standard.)
* Whether PCI Express 3.0 is supported depends on CPU and graphics card compatibility.
* The PCIEX16_2 slot will become unavailable when an expansion card is installed in the orange PCI Express x16 slot.

2 x PCI Express x1 slots
(All PCI Express x1 slots conform to PCI Express 2.0 standard.)
post #529 of 580
This is how organized clean computer should look like. smile.gif

post #530 of 580
Quote:
Originally Posted by ADJ2ACT View Post

This is how organized clean computer should look like. smile.gif


You're 100% correct. I'm a retro slob and I just can't bring myself to it. smile.gif
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