GPU (real/actual) memory size detection

[KakoMiner]

Please tell me, if anyone knows how to detect the real memory size of AMD GPU

Thank you

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[FloppyPurpleGherkin]

What does the actual sticker on the GPU say? it should reference 8g or 4g for example

[Daltonik]

Why not just use a well-known tool for viewing the characteristics of graphics cards such as GPU-Z https://www.techpowerup.com/gpuz/ I think everything will be visible there. Supports NVIDIA, AMD, ATI and Intel graphics devices.

[fapar]

Please tell me, if anyone knows how to detect the real memory size of AMD GPU

Thank you

The best way is to visually study the memory chips. Use the information on them (marking) to set their volume and calculate the total amount of memory. At the software level, you can use GPU-Z or make a dump of the video card BIOS and study it through Polaris BIOS editor, for example. But I remember cases when chinese craftsmen modified the vBIOS so that it gave false data, up to the installed graphics chip.

[adaseb]

Basically its like in the old days of when you bought a hard drive. You bought a 1GB drive only to find out that you can use like 950GB or so. With GPUs is similar but to a lesser extend.

Generally you can't use the entire 4GB of a 4GB GPU, there is some data or cache that the OS stores on the GDDR so you can't use a 4GB to load a DAG that is exactly 4.0GB or 3.999GB.

I think if you use Ubuntu you will get the most space because it uses maybe 50-75mb or so of GDDR, so you can mine up to 3.95GB almost. Anything higher and it won't work.

[FloppyPurpleGherkin]

I think if you use Ubuntu you will get the most space because it uses maybe 50-75mb or so of GDDR, so you can mine up to 3.95GB almost. Anything higher and it won't work.

SMOS which is ubuntu uses around 20-30 mb so should be fine up until around ~4060MB dag size as the physical capacity is actually 4096MB.

[BAGOBO]

Please tell me, if anyone knows how to detect the real memory size of AMD GPU

Thank you

I usually check VGA using the dxdiag program/command and CPU-Z software.
If you find it difficult to find/run the program, you can use the CPU-Z software to check the specifications of your VGA and Device.
In CPU-z all complete information is included there, you just have to read and read carefully

[fapar]

Basically its like in the old days of when you bought a hard drive. You bought a 1GB drive only to find out that you can use like 950GB or so. With GPUs is similar but to a lesser extend.

Generally you can't use the entire 4GB of a 4GB GPU, there is some data or cache that the OS stores on the GDDR so you can't use a 4GB to load a DAG that is exactly 4.0GB or 3.999GB.

I think if you use Ubuntu you will get the most space because it uses maybe 50-75mb or so of GDDR, so you can mine up to 3.95GB almost. Anything higher and it won't work.

You can also remember that in Linux (at the core level and programs), MiB and MB are used. Different miners can be interpreted in different ways, the actual memory size.
Even in Windows, two different miners (LOL and Claymore) generate a DAG of different size 3.87 and 3.95 respectively.