The limited 33% performance improvement over the existing 940MX comes as a bit of a surprise, but it makes sense within the context of the specifications. Relative to a GDDR5 940MX, the MX150 does not have a significant specification advantage over the aforementioned 940MX, with the same number of CUDA cores and similar memory bandwidth. The one stand-out here is ROP throughput, which doubles thanks to GP108’s higher ROP count.
Ultimately what this means is that most of MX150’s performance advantage over the 940MX comes from clockspeed improvements, with a smaller uptick from architectural gains. The counterpoint to that is that these are entry-level laptop parts that are frequently going to be paired with 15W Intel U-series CPUs, so vendors are going to play it safe on clockspeeds in order to maximize energy efficiency. NVIDIA does advertise these GPUs as offering multiple times the performance of Intel’s HD 620 iGPU, however given the higher power consumption of the GPU, I’m more curious how things would compare against Intel’s 28W Iris Plus 650 configurations.
http://www.anandtech.com/show/11449/nvidia-announces-geforce-mx150-for-laptops
