It is measured in millions of texels in a second. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. It especially helps with AA, HDR and higher screen resolutions. The higher the memory bandwidth, the better the card will be in general.
If it uses DDR type memory, it must be multiplied by 2 again. It's worked out by multiplying the card's bus width by its memory clock speed. The laptop came with Windows 10 and it works there without any problems.Memory Bandwidth: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred across the external memory interface in one second. I also checked if it's possible to turn off the Intel card altogether from BIOS and the answer is no - I can only disable the discrete one.įinally, the Nvidia GPU itself is fine. I just want to set the discrete one as the default using nvidia-prime (just like in my old laptop) and forget about it. I don't care about the Intel card at all.
Problem is, I ABSOLUTELY NEED a Linux system with cuda and recent OpenGL (4.3+) support to work on my master's thesis. If I purge all the Nvidia stuff (drivers, cuda, prime), it boots to desktop just fine using Intel drivers. My laptop is Lenovo Z70 with Nvidia 840M discrete GPU. It seems that nvidia-modeset allocates and immediately frees the GPU, which is then followed by "vgargb: this pci device is not a vga device" message. I read through all the logs and it seems that this time the problem is not with the x server, but with the proprietary driver or maybe even the kernel. Whenever I boot Ubuntu Gnome, I get a black screen. However, the problem I'm getting with 16.04 is completely different and I'm not even sure if this is the right forum to ask for help. My previous (and now dead) laptop used Nvidia's Optimus, too, so I know how to handle most of the problems that come with it. It also asked me to disable Secure Boot, so that proprietary drivers could run, which I did. I've installed Ubuntu Gnome 16.04 beta on a brand new laptop because I couldn't get 15.10 live cd to boot on it no matter what I did.ġ6.04 booted (with nomodeset) and installed just fine.
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