Why is my GPU running at X4
Yeah this is because the GT 1030 has only 4x PCIe connection by design. I have a GT 1030 in one of my PC's I was wondering the same thing when it was showing up as x4. Took me a while to work out it wasn't the slot and that it was built that way by the manufacturer.
It's super confusing because most GT 1030's actually have a x16 slot connector, but not all the pins are actually wired up and connected!!
Not all GT 1030 are 4x, but most are, take a look at newegg to see. Look at the info in the product description.
This is 4x in description: https://www.newegg.com/Product/Product.aspx?Item=N82E16814125972&cm_re=GT_1030-_-14-125-972-_-Product
So is this one (even says 4x in 16x): https://www.newegg.com/Product/Product.aspx?Item=N82E16814137139&cm_re=GT_1030-_-14-137-139-_-Product
This Looks like it's not 4x but might be an error: https://www.newegg.com/Product/Product.aspx?Item=N82E16814932004&cm_re=GT_1030-_-14-932-004-_-Product
This one actually has a 4x connector instead of 16x: https://www.newegg.com/Product/Product.aspx?Item=9SIA73M8B24542&cm_re=Gt_1030-_-9SIA73M8B24542-_-Product
If you look on GPUDB you will see that it's only a 4x GPU by design It States: Bus Interface - PCIe 3.0 x4
There is no way for you to get it to go to 16x. It is physically impossible, if you take a close look at the connector you can see that there are no pcb traces from the last load of pins, they don't connect.
Really great of Nvidia to do this and not say anywhere official. But as far as I know it doesn't affect the performance so don't worry about it, nothing is broken, nothing is wrong with your motherboard.
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