View Full Version : G751 USB issues and Haswell Southbridge steppings

01-08-2015, 07:54 AM
Hello everyone, I am very interested in the G751 laptop, available here in Sweden in an unusual configuration called G751JT-T7036H. This version comes with an 128GB SSD, 1TB 7200 RPM mechanical harddrive and a single stick of RAM, installed in the non-accessible slots. The price is 13 489 SEK (Swedish Crowns) which comes to about 1600 USD with VAT included (the Crown is very weak against the USD at this time). It comes to 1350 Euros (again including VAT).

The only thing holding me back from ordering it the USB issues some people have. My current computer with a P55 Intel chipset has massive problems with regular USB2 devices, something that Intel did not really care about except for iPhone users: http://support.microsoft.com/kb/2020763

So I am not that happy about buying a new computer with the same issues all over, esp. since I will need to do a lot of backups over USB to my mobile disk farm. Intel claims to have fixed some USB issues in the C2 stepping of the chipset, but these seems to be related to sleep states only. I will look up the errata for the chipset.

Can any users of the laptop check which chipset stepping you have on the computers? The common system information tool called CPU-Z (http://www.cpuid.com/softwares/cpu-z.html) is supposed to be able to read out the Chipset and Southbridge versions, just check under the Mainboard tab. Otherwise you might be able to see the information in the BIOS of the computer?

Intel themselves claimed that only a small batch of C1 boards was produced and that the problem is only a "nuisance":

However, on the Intel support forums people still get C1 steppings on desktop Intel boards that claims to have upgraded to C2, which Intel claims is just a read error in the software being used, CPU-Z. People still seems to suffer USB3 problems though:

There are some disussions in this thread on how to identify the chipset stepping:

Thanks in advance to anyone taking the time to identify their computer's hardware.