1337lutz

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Fullscreen same result

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Try to go to nvidia panel and change the bar to "Performance". Also I changed the color resolution to 16 bits and selected "High Performance" laptop plan when gaming.

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Try to go to nvidia panel and change the bar to "Performance". Also I changed the color resolution to 16 bits and selected "High Performance" laptop plan when gaming.

What i ment is that PCIexpress 1x 2.0 runs at 1gb/s meaning it runs at 500mbs/500mbs up and down. This means the card is being bottlenecked quite hard, but regardless, still offers good performance from you old card.

Thank you so much! Optimus now works properly. I have been trying to get it to work ever since I upgraded.

@1337lutz If you're still having the problem, the method that worked for me was to:

1. Uninstall both graphics drivers with DDU with reboots in between

2. Install Intel's driver 15.40.4.64.4256 first with the Have Disk method and reboot

3. Install the modded .inf Nvidia driver 353.75 and reboot

EDIT: I installed the modded .inf driver with the Have Disk method as well.

When I go to devie manager -> Select a folder on disk -> it tells me: the best driver has already been installed (Microsoft Basic display adapter)

EDIT: Nvm i found out what the Have Disk method was.

EDIT 2: Damn, my benchmark scores went up by almost 1000 points.

I dont really care for DDR4, what I care for is m.2, advanced BIOS and GPU upgrades. Also i'd like it when the models could be thinner, but keep their cooling performance in check.

What does 500/500 mean???

That it is running only at PCIexpress 1x speeds. Did you click the ? icon next to the bus interface text to trigger the max speed of your pci express slot? (in GPU-Z)

I'm having the same issue. I have a P150SM and a 970M 6GB. I updated to Windows 10 and nothing seems to use my GPU. The light on the laptop showing if the GPU is powered turns on occasionally but never stays on for more than a couple of seconds. I've tried with the stock BIOS 1.03.05 and Prema Mod BIOS v2 and Prema's 970M vBIOS. I've also tried uninstalling the Intel and Nvidia drivers with DDU and installing them fresh from the websites rather than through Windows Update.

Did you resolve your issue yet?

After updating to W10 you need to use a driver with modified .inf-file (LaptopVideo2Go: Drivers). But before you can install it you have to disable the driver signature enforcement (how do I disable driver signature enforcement win W10 preview? - Microsoft Community).

That does the trick for me.

I used a .inf file and installed the latest driver. But it still did not use the card, weird thing is, Photoshop CC 2015 is the ONLY and I repeat ONLY program that uses it, even when I try to force 3D apps in the nvidia control panel.

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I'm having the same issue. I have a P150SM and a 970M 6GB. I updated to Windows 10 and nothing seems to use my GPU. The light on the laptop showing if the GPU is powered turns on occasionally but never stays on for more than a couple of seconds. I've tried with the stock BIOS 1.03.05 and Prema Mod BIOS v2 and Prema's 970M vBIOS. I've also tried uninstalling the Intel and Nvidia drivers with DDU and installing them fresh from the websites rather than through Windows Update.

Thank you so much! Optimus now works properly. I have been trying to get it to work ever since I upgraded.

@1337lutz If you're still having the problem, the method that worked for me was to:

1. Uninstall both graphics drivers with DDU with reboots in between

2. Install Intel's driver 15.40.4.64.4256 first with the Have Disk method and reboot

3. Install the modded .inf Nvidia driver 353.75 and reboot

EDIT: I installed the modded .inf driver with the Have Disk method as well.

Sorry i just read your post, I will try to do so when I get the time

EDIT: Upgrading to Windows 10 once again, as we speak.

Use Display Driver Uninstaller app to remove both Intel IGP and Nvidia GPU drivers from the system. Then install newest drivers, Intel first, NVidia second. This should solve the issue.

I did this around 5x and it didn't work.

Could this be related to my 157SM not supporting the 970M by default and requiring a INF edit?

Thanks for looking it up! Seems that it is only running with 500/500 bandwidth which is i think a quite big bottleneck But still a major improvement over your iGpu

I don't know sorry

According to HWInfo:

-The dedicated GT650M got 8Gbps

-The eGPU+960 got 5Gbps

Could you check with GPUZ? When you click the "?" it opens a little test program that runs the stresstest to see the max bandwidth.

Yes my friendd, just using the little mPCIE slot used for the wifi card!

How many lanes does it have? x4?

Thats pretty amazing. How did you connect it inside your laptop? Is it using the little mpcie slot used for the wifi card for example?

It depends on what you are planning to do with it. 980M SLI is quite overkill if you for instance have a desktop next to it.

No, right now the pixel density for me doesnt cut it.

I ordered my 960M 6gb from ebay. Buy you could also try Eurocom, since they are able to sell parts too.

I have a P170SM with a 970M and the v2 mod by Prema, just upgrade today with windows 10 64 bit, works perfectly!

I have noticed now that beside modding the .inf file, I dont' need anymore to boot windows with disabled signature enforcement and install the drivers through the device manager, its working perfecly just with the setup.exe, its never happened to me with windows 8...

...Just my 2 cent..

I have the P157SM with a 970M 6gb and the Prema v2 mod, however my Optimus doesnt work for games and benchmarks...

I have a feeling that Windows 10 not working nicely with my Optimus is a result of my P157SM having a 970M without the BIOS support. Anyone got the same issues?