So, a larger 17-inch gaming laptop can allow for better cooling and thus the GPU can have a higher TGP rating and use more power than on a 15.6-inch model and that could result in a bit of extra performance boost. Notebook manufacturers however have a wide range of GPU power usage to play with and thus operating frequencies from model to model may vary and performance can also be lower or higher. The lower operating frequencies are used in order to significantly reduce the power usage of the RTX 3070 Laptop GPU that uses between 80W and 95W in the gaming laptop we tested it on. The more important thing here is that the memory bus is also the same 256-bit on both as memory-intensive crypto algorithms like Ethash do take advantage from a wider memory bus. The video memory used is GDDR6 on both GPUs, but the mobile version has the memory running at lower frequency as compared to the desktop variant, just like the with the GPU. The Laptop GPU model has less CUDA Cores compared to the Desktop GPU and is also clocked much lower in terms of operating frequencies for both the graphics processor and for the memory. While these two are similar, they are not the same GPU specs wise and we are not talking about operating frequencies only.
On the image above you can see the specifications of a Nvidia GeForce RTX 3070 Laptop GPU and on the right form Nvidia GeForce RTX 3070 Desktop GPU. We have just tested mining Ethereum with RTX 3070 Laptop GPU on a Gaming Notebook using the MSI GS66 Stealth 10UG 15.6-inch gaming notebook and shared some interesting insight about the mobile RTX 30-series GPUs in it, but there is more to talk about in a separate article and we are doing it here. So, while the RTX 30 Series Laptop GPUs should still do pretty well for Ethereum mining and probably other crypto coins that use different algorithm than Ethash, you should not expect them to be as fast as their desktop versions. Although the names are like on the desktop variants of these video cards, the mobile ones have a clarifying “Laptop GPU” after the product name, because it is not the same specs graphics processor or even video memory as used on the desktop cards. The mobile GPU product line consists of the following models: Nvidia GeForce RTX 3060 Laptop GPU, Nvidia GeForce RTX 3070 Laptop GPU and Nvidia GeForce RTX 3080 Laptop GPU for the moment. And similar to their desktop counterparts in the GeForce RTX 30 Series product line, the mobile versions of these graphics chips used in gaming laptops does manage to give you very good hashrates for mining Ethereum. Gaming laptops with the latest generation of mobile graphics cards from Nvidia in the form of their RTX 30 Series Laptop GPUs are popping on the market and apparently people are not only interested in playing games on them, but also using them for crypto mining.
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