The mid-range mobile graphics accelerators include the GeForce 940MX. Its characteristics without any problems make it possible to solve any problems that are relevant by current standards. But in some cases, the picture parameters will be quite modest. This video card will be dedicated to the material.
Positioning
In the 900 series, the NVdia GeForce 940MX graphics adapter belongs to mid-range solutions. Moreover, their performance is appropriate. Again, mobile video cards must combine speed and energy efficiency. The latter circumstance also provides an increase in battery life. This accelerator debuted in March 2016. The considered series of video devices was distributed as follows:
The 910MX and 920MX belonged to the most budget adapters. They have very modest parameters. Therefore, the performance corresponded to the level of integrated video cards.
The average niche of graphic cards was occupied by 940MX, 945MX and 950MX. Their parameters made it possible to work with any software, but with the best image characteristics.
The premium adapter segment was filled with solutions from the 960MX and 970MX series. They provided the highest possible speed, but the autonomy of such mobile devices left much to be desired.
Chip parameters
The NVidia GeForce 940MX video adapter is based on an architecture codenamed “Maxwell”. On its substrate are 384 stream processors. The frequency of each of them ranges from 1122 MHz to 1242 MHz. A similar change to this parameter is provided by TurboBust technology. The previously given values are valid for the nominal mode of the GeForce 940MX. Its characteristics in case of overclocking can improve. The GPU itself is manufactured according to 28nm, and its thermal package according to the factory specifications does not exceed 25 watts.
Memory subsystem
RAM can be implemented in completely different ways in the GeForce 940MX. The characteristics for starters point to the possibility of using a video buffer of both 2 GB and 4 GB sizes. Also, such an accelerator can work with different types of memory chips. The specifications feature support for both GDDR3 and GDDR5. The width of the memory bus is fixed and equal to a modest 64 bits. The GeForce 940MX graphics card has a fixed RAM frequency of 2000 MHz. You can, of course, apply a faster memory, but this will not give the desired performance increase. The microcircuits both functioned at 2000 MHz and will work. This limitation comes from the memory controller of the video card.
Comparison with competitors
As a direct opponent, it is best to choose the Intel HD Graphics 620 model for the GeForce 940MX. A test in games allows you to see the real difference between these two solutions. It should also be noted that the laptop was based on the Core i7-7500U chip and had a diagonal of 15.6 '. Image resolution - FullHD or 1920 x 1080. In the Dota 2 game, the Intel device was able to produce 57-60 fps, and NVidia - 118-120 fps. It turns out double superiority of the integrated graphics with a low picture quality. In turn, in the Rocket League game, the advantage of 940MX is not so great. The integrated solution produces fps at the level of 50-55, and discrete 55-60 in the same mode. The gap between accelerators is again increasing in Dirt Rally. The solution of the HD Graphics series produces 29-30 fps, and 940MX - 43-45. That is, in this case, the last device provides an increase in speed in the same mode by 1.5 times. Be that as it may, the presence of a discrete graphics card raises the performance of the PC as a whole. And the previous results just confirm this. Depending on what software is implemented on the accelerator, the performance gain can vary from a few percent (the Rocket League case) to a 2-fold increase in performance (Dota 2 game). The most important feature of the discrete graphics of the NVidia GeForce 940MX is the release of CPU resources from graphics processing. It is due to this that ensures higher PC performance. But this reduces the battery life and increases the cost of the computer.
Conclusion Reviews The price of finished devices
Fairly good results from a performance standpoint showed the GeForce 940MX. Her characteristics are really excellent, as for mid-range accelerators. But at the same time, such computing systems have two significant drawbacks. One of them is the increased cost of the PC, due to the presence of additional components and increased performance. The second is a decrease in laptop autonomy. These two circumstances must be taken into account when choosing a mid-range PC.