Tom's Hardware > Forum > Graphic & Displays > Graphics Cards > My motherboard has a pci-e x16 slot, but the control panel says..

My motherboard has a pci-e x16 slot, but the control panel says..

Forum Graphic & Displays : Graphics Cards - My motherboard has a pci-e x16 slot, but the control panel says..

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I have a 8800gt and a motherboard with a pci-e x16 slot. For some reason on the control panel for my video card it says I have a x8 bus slot. Any reason why?

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What chipset is this?

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Intel Xeon X3370 @3.6ghz Under Enzotech Extreme-X,EVGA GTX 285 SC, 4GB Mushkin Ascent eVCI @ 1066mhz, Gigabyte P45 UD3P
Reply to spathotan

NVIDIA nForce650 SLI Chipset


I think it's that. I'm kinda scrub so let me know if that's not what you're looking for.

Reply to johoz

Does it by any chance say 8x 2.0? For some reason my card is either detected as 16x or 8x 2.0. They are equivalent in bandwidth and my card is 2.0 compatible (but not my MB) so I guess it just gets confused. Try other scanning programs like PCWizard or GPU-Z.

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Antec 300 Illusion > Asus 4850 512MB w/AM Cooler > Corsair 650HX > CM Hyper 212 Plus > Other: PII 940/Gigabyte 790GX/4850 1G

 

Reply to EXT64

What motherboard do you have?

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It is the mark of an educated mind to be able to entertain a thought without accepting it.
-Aristotle
Reply to ausch30

nope just x8 bus.
Where could I get pcwizard or gpu-z?

Reply to johoz

it's dells xps 630

Reply to johoz

Well the Nforce 600 series does not support PCIe 2.0, but the 8800GT does. So running at 8x is running at 8x, PCIe 2.0 isnt even part of the equation because the board dosent support it. I used to have an EVGA 680i before I knew nvidia chipsets were bad news, and I remember in the BIOS you could adjust the speed betweeen 4, 8, and 16. Maybe go look for that.

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Intel Xeon X3370 @3.6ghz Under Enzotech Extreme-X,EVGA GTX 285 SC, 4GB Mushkin Ascent eVCI @ 1066mhz, Gigabyte P45 UD3P
Reply to spathotan

nVidia’s 650i SLI chip set

Reply to johoz

Ok before I jump into my bios to look for the speed adjustment, any precautions should I consider? I've overclocked my processor to 3.0ghz from 2.4ghz so I am familiar with it

Reply to johoz

Well all you are looking for is bandwidth/speed adjustments for the PCIe, dont mess with anything else. I cant tell you where the setting would be unfortunately, but it should be in either Advanced, or onboard devices.


Message edited by spathotan on 07-05-2008 at 09:01:50 PM
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Intel Xeon X3370 @3.6ghz Under Enzotech Extreme-X,EVGA GTX 285 SC, 4GB Mushkin Ascent eVCI @ 1066mhz, Gigabyte P45 UD3P
Reply to spathotan

Dowload and run CPUZ, under the Mainboard tab at the bottom it has a box for Graphics Interface and it will show you what you card is running at and what the slot is capable of.

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It is the mark of an educated mind to be able to entertain a thought without accepting it.
-Aristotle
Reply to ausch30

Will increasing it (if i can) make my motherboard a lot hotter?

Reply to johoz

yea it's running at x8 but max supported is x16

Reply to johoz

Do you have more than 1 PCI-E slot? it might be that 1 is 16x and 1 is 8x.

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It is the mark of an educated mind to be able to entertain a thought without accepting it.
-Aristotle
Reply to ausch30

no 2 pci-es x16


Message edited by johoz on 07-05-2008 at 09:26:05 PM
Reply to johoz

uh how do I raise my slot to x16? the only thing I see involving my slots is a listing of both pci-e slots and they're at 100mhz, which can be raised or lowered

Reply to johoz

is the 100mhz thing the speed adjustments for my slot cards?

Reply to johoz

There are no 650i boards with 2 16x PCI-E slots, the 650i chipset doesn't have enough lanes to support 2 cards @ 16x. When they list 2 x 16x PCI-E slots they are talking about the physical size of the slot not the speed. The 650i has either 1@16x and 1@8x or both @8x in SLI. Some boards are capable of switching the slots between 16x and 8x and some are set at a certain speed. The two slots on your board should be different colors which would identify 1 as 16x and the other as 8x.

The 100mhz is your PCI-E frequency leave it there.


Message edited by ausch30 on 07-05-2008 at 09:48:02 PM
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It is the mark of an educated mind to be able to entertain a thought without accepting it.
-Aristotle
Reply to ausch30

oh! ok. one is blue (the one my cards in) the other is black. i'll try switching and see what happens. thank you!

Reply to johoz

Your card should be in the top port.

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Intel Xeon X3370 @3.6ghz Under Enzotech Extreme-X,EVGA GTX 285 SC, 4GB Mushkin Ascent eVCI @ 1066mhz, Gigabyte P45 UD3P
Reply to spathotan

ausch30 wrote :

Dowload and run CPUZ, under the Mainboard tab at the bottom it has a box for Graphics Interface and it will show you what you card is running at and what the slot is capable of.


Also download GPUZ and check it out.

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http://farm4.static.flickr.com/3553/3818083596_1a772f7162_o.gif
Reply to Shadow703793

On gpu, where does it tell me that it's on the x16 bus?

Reply to johoz

On ROP it says 16 (idk what that is
but on bus interface it says PCI-E 2.0 X16 @ 8

Reply to johoz

johoz wrote :

On ROP it says 16 (idk what that is
but on bus interface it says PCI-E 2.0 X16 @ 8


ROPs (Raster Operator units) are units which perform various raster operations. More ROPs will lead to a higher fill rate (GPixel/s).

Did you switch the slots?

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It is the mark of an educated mind to be able to entertain a thought without accepting it.
-Aristotle
Reply to ausch30

wait do I have a pci-e 2.0 x16 slot or no?

Reply to johoz

no

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It is the mark of an educated mind to be able to entertain a thought without accepting it.
-Aristotle
Reply to ausch30


Your card is meant to be in the blue one.
This is a full review of your board. http://www.xbitlabs.com/articles/m [...] e-sli.html

Mactronix :)

Reply to mactronix
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