Topic: PCIe help

Offline bigROBOTbill

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Hi team, I have 2 GTX460's running in SLi, one's a Leadteck, one's a Palit. Both have the same core speeds etc. Just looking at them using CPU-Z and the Leadteck card has the PCIe 2.0 x16 @162.0, the Palit one is pCIe 2.0x16 @82. That seems like the second one isn't running at full power. Both have the latest bios updates as far as I can tell and I checked in NVIDEA control panel and I have it set to maximum power.

Anything else I can check? Does it make a difference?

The motherboard is an XFX 750i, could there be something in the MB bios perhaps.

Posted: June 22, 2013, 10:56:32 am

Offline mycoolcar

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What does the 162 & 82 refer to? Can you post a screenshot of it?

Reply #1 Posted: June 22, 2013, 11:05:14 am

Offline bigROBOTbill

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It says this in the bus interface, I'll post a couple of screens when I get home MCC.
:)

Reply #2 Posted: June 22, 2013, 11:18:57 am

Offline swindle

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That mobo can do SLi with 2 lanes at 16x?

EDIT: Its running at 8x, thus the numbers.

http://www.gameplanet.co.nz/pc/reviews/132591.XFX-750I-motherboard-review/
  • PCI-E x16: 2 x PCI-E Gen2 (16x + 8x in SLI)
Last Edit: June 22, 2013, 12:53:25 pm by swindle

Reply #3 Posted: June 22, 2013, 12:49:41 pm
If we hit that bullseye, the rest of the dominoes should fall like a house of cards. Checkmate.

Offline bigROBOTbill

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Here are the screenshots, so this is normal then swindle? One will only run at 162 and the other at 82?

[ATTACH=CONFIG]7926[/ATTACH][ATTACH=CONFIG]7927[/ATTACH]


Actually after doing more of a search and it seems that it shouldn't make too much difference apparently.
Last Edit: June 22, 2013, 01:15:32 pm by bigROBOTbill

Reply #4 Posted: June 22, 2013, 01:05:55 pm

Offline Emrico1

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This^ AFAIK, as long as you are getting X8, it should not be a noticeable bottleneck.
It only becomes an issue @ x4

Reply #5 Posted: June 22, 2013, 03:14:54 pm

Offline bigROBOTbill

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Thanks chaps, though strangely after setting the jumper on the MB to allow oveclocking, both of them show as 162 now.
Not having much luck overclocking though, and i have stock cooling so I guess I can't expect too much.

XFX bios updates are nowhere to b found, my board is seen as a Microstar one. :(

Reply #6 Posted: June 22, 2013, 04:44:36 pm

Offline swindle

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No games, or software (afaik) can even make use of 2 GPUs at 100%.

Reply #7 Posted: June 23, 2013, 01:04:03 am
If we hit that bullseye, the rest of the dominoes should fall like a house of cards. Checkmate.

Offline Dr. Acula

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All it means is one card is in x16 slot and the other is in the 8x slot, both slots are PCI-e 2.0 and it'll run them at 8x speed. but as Swindle and Emrico said, you won't notice any difference in performance during gaming etc, even if they are at the 'slower' 8x speed

Reply #8 Posted: June 23, 2013, 02:34:26 am
Dr. λculał

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