Tech

Mobile GeForce RTX 3070 for notebooks: Fewer shader cores than the desktop version

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Several results from an HP Omen notebook that is equipped with Nvidia’s upcoming GeForce RTX 3070 (Mobile), paired with Intel’s eight-core processor Core i7-10870H, landed in the online database of Geekbench. Geekbench read 40 shader multiprocessors (5120 shader cores) at a clock frequency of around 1300 MHz and 8 GB of graphics memory.

That would be the Mobile version of the GeForce RTX 3070 significantly slower than the desktop version with 5888 shader cores and 1730 MHz boost. Lower clock frequencies are common in notebooks in order to reduce power consumption and thus increase efficiency. Nvidia, on the other hand, has not cut the graphics chips any more for years: Like the desktop GPU, the mobile GeForce RTX 2070 used 2304 shader cores, the mobile GTX 1070 even had more shader cores than its desktop sister.

The reason could be the power consumption: The desktop series GeForce RTX 3000 alias Ampere is thirstier than the previous generation, so that the GeForce RTX 3070 with 220 watts consumes about as much power as the GeForce RTX 2080. Even thick gaming notebooks allow this GPUs, however, are far less than 200 watts, as space and cooling are limited – mobile versions of the GeForce RTX 2070 usually come in a little more than 100 watts.

In addition, Nvidia still has to leave space for the mobile GeForce RTX 3080 at the top. The well-informed website for notebooks Notebookcheck assumesthat Nvidia will also use the GA104 graphics chip for the GeForce RTX 3080 (Mobile) instead of the larger GA102 of the desktop RTX-3080. Thus the notebook GPU would have a maximum of 6144 shader cores and 8 GB of RAM. For comparison: The desktop version has 8704 shader cores paired with 10 GB of memory on 320 instead of 256 data lines.


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