09-25-2014 10:56 AM
I noticed that the PCI express link speed is at X8, while it is supposed to be X16.
Is this because of the m.2 ssd connected?
I have tried to change the settings in Windows power settings, tried making the computer turn on the X16 with a stress test with GPU-Z, but still at x8
Y510P - Single Nvidia GT 750m - 20GB m.2 SSD - Windows 8.1
09-25-2014 05:48 PM
No, it's due to the limits of the mobile chipset and SLI. If it ran at 16x you wouldn't have the ability to use a second GPU.
09-26-2014 09:51 AM
09-26-2014 04:12 PM
09-26-2014 08:05 PM
So this means there is no PCIe X16 connector in this computer, only 2 X8 connectors.
This is a bit annoying - Ususally, when you don't actually connect two cards in SLI, the bus is free to use it's full speed...
So, who do I turn to for a BIOS fix?
Or is it impossible due to the physical connector being a max X8? <not an acceptable answer!
I know, maybe the X8 doesn't even cause a bottle neck, but I can't actually test that, can I...
09-26-2014 08:37 PM
The difference in performance between x8 and x16 is approximately 2%.
With the Y510P, you should worry more about the Lenovo feature that disables Intel Turbo Boost while gaming. A Core i7-4700MQ can run up to 50% faster when Turbo Boost is properly enabled.
09-26-2014 08:51 PM
Yes, I figured the difference wouldn't be noticeable, but it still bugs me.
And no, I didn't know about the Turbo-Boost block... I could have got two core I3 laptops for the price on one castrated Y510P...
No nice Lenovo... I still love this computer, but a bit dissapointed... Also the TN panel... But still love my Y510P... Well, LIKE it... To a point...