- NVIDIA GEFORCE 940M VS NVIDIA GEFORCE GT 745M PLUS
- NVIDIA GEFORCE 940M VS NVIDIA GEFORCE GT 745M SERIES
Two streams can be decoded in parallel for features such as Picture-in-Picture.
Common codecs such as MPEG-1/2, MPEG-4 ASP, H.264 and VC1/WMV9 are fully supported up to 4K resolutions while VC1 and MPEG-4 are supported up to 1080p. The 5th generation PureVideo HD video processor (VP5) (also integrated in the GK107 core) offers hardware decoding of HD videos. However, as most laptops will feature Optimus, the integrated GPU will likely have direct control over the display ports and may limit the feature set available by the Nvidia Kepler cards. HD-Audio codecs, such as Dolby TrueHD and DTS-HD, can be transmitted via bitstream mode through the HDMI port. Furthermore, high resolution monitors of up to 3840x2160 pixels can now be connected using DisplayPort 1.2 or HDMI 1.4a if available. The feature set includes support for up to 4 active displays. In older titles, there are also reserves for additional quality features like AA and AF. Current games (as of 2013) can be played fluently in medium to high settings. Models with GDDR5 memory are usually slightly faster than models with DDR3. This feature is available on any notebook with a graphics card of the 700M series.ĭepending on clock speed and memory configuration, the GT 745M performs just below the GT 650M or GTX 660M.
NVIDIA GEFORCE 940M VS NVIDIA GEFORCE GT 745M SERIES
PCIe 3.0 is now supported by the mobile Kepler series and GPU Boost 2.0 can automatically overclock the card if the laptop cooling system allows it. However, due to the missing hot clock of the shader domain, two shaders of a Kepler chip are as fast as one shader of a Fermi chip, even though Fermi shaders are clocked at twice the speed. Although more shader cores are available in the Kepler architecture as compared to the Fermi design, the Kepler shaders are expected to be up to two times more power efficient. The GK107 Kepler core offers two shader blocks, called SMX, each with 192 shaders for a total of 384 shader cores that are clocked at the same speed as the processor core.
NVIDIA GEFORCE 940M VS NVIDIA GEFORCE GT 745M PLUS
The GK107 chip (384 shaders) is clocked at up to 837 MHz plus boost and has a 128 bit memory interface (usually DDR3, but GDDR5 also possible). It is based on the Kepler architecture and manufactured by TSMC in a 28-nanometer process. The NVIDIA GeForce GT 745M is a DirectX 11 graphics card of the middle class. NVIDIA GeForce GT 745M ► remove from comparison The 900M series also supports Optimus to automatically switch between an integrated graphics card and the Nvidia GPU. Therefore, the GPU is best suited for laptops 13 - 14 inches in size and above.
The power consumption of the GeForce 940M should be about 30 Watts or lower. Of course, VP6 supports all features of previous generations (4K support, PIP, video encoding via NVENC API). Unfortunately, HDMI 2.0 is still not supported. GM108 integrates the sixth generation of the PureVideo HD video engine (VP6), offering a better decoding performance for H.264 and MPEG-2 videos. However, very demanding games such as Assassin's Creed Unity will require lower resolutions and/or details. Similar to Fermi and Kepler, the GM107/GM108 support DirectX 12 with feature level 11_0 only.ĭue to its just 5 percent higher core clock, the GeForce 940M is only marginally faster than the previous GeForce 840M and similar to the older GeForce GT 750M (DDR3 version). Many games of 2014/2015 can be played fluently in WXGA resolution (1366 x 768) and medium detail settings. The larger size can process some of the memory traffic to allow for a relatively narrow memory interface without significantly reducing performance. Smaller Streaming Multiprocessors (SMM) with only 128 ALUs (Kepler: 192) and an optimized scheduler should lead to better utilization of the shaders. Nvidia promises that a Maxwell SMM with 128 ALUs can offer 90 percent of the performance of a Kepler SMX with 192 ALUs. GM108 features 3 SMMs and thus 384 shader cores, 24 TMUs and 8 ROPs (64-bit interface).Īnother optimization is the massively enlarged L2 cache. The 940M offers 384 shader units as well as 2 GB of DDR3 memory (64 bit, 2000 MHz effective).Ĭompared to the previous and technically very similar GeForce 840M, the GeForce 940M is clocked just slightly higher.Ĭompared to Kepler, Maxwell has been optimized in several details to increase power efficiency. The NVIDIA GeForce 940M is a mid-range DirectX 11-compatible graphics card for laptops unveiled in March 2015. It is based on Nvidia's Maxwell architecture (GM108 chip) and manufactured in 28 nm. NVIDIA GeForce 940M ► remove from comparison