The NVIDIA GeForce GT 750M SLI is a high-end DirectX 11-compatible graphics solution for laptops, consisting of two GeForce GT 750M. Each card has a 28nm GK107 core based on the Kepler architecture. With SLI, each card usually renders a single frame (AFR mode). Therefore, it may suffer from micro stuttering in low fps ranges of 30fps. This happens because of different timespans between two frames (e.g., irregular delays between sequential frames).
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. 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. 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.
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. This feature is available on any notebook with a graphics card of the 700M series.
Equipped with fast GDDR5 memory, the GT 750M SLI performs similar to a single GeForce GTX 675MX or GeForce GTX 770M. Depending on the game, there can be big differences here, depending on how well SLI scales in a particular case. Overall, most current games (as of 2013) can be played fluently in 1080p and (very) high settings.
The feature set includes support for up to 4 active displays. Furthermore, high resolution monitors of up to 3840x2160 pixels can now be connected using DisplayPort 1.2 or HDMI 1.4a if available. HD-Audio codecs, such as Dolby TrueHD and DTS-HD, can be transmitted via bitstream mode through the HDMI port.
The 5th generation PureVideo HD video processor (VP5) (also integrated in the GK107 core) offers hardware decoding of HD videos. 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. Two streams can be decoded in parallel for features such as Picture-in-Picture. Another feature is the inclusion of a dedicated video encoding engine similar to Intel QuickSync that can be accessed via the NVENCI API.
The power consumption of the GeForce GT 750M SLI doubles compared to a single 750M, reaching about 70 - 80 W. As a result, the Nvidia GPU is only suited for larg gaming notebooks.
The NVIDIA GeForce GT 720M is an entry-level, DirectX 11 compatible graphics card that has been announced in spring 2013. Its core is based on the 28nm GF117 chip (Fermi architecture) with 64-bit DDR3 memory. Compared to the 710M, the GT 720M is clocked slightly higher.
The GF117 is based on the optimized GF108 Fermi chip (GeForce GT 540M) and offers 96 shaders, 16 TMUs and 4 ROPs. Each shader core is clocked twice as fast as the rest of the graphics chip, a technique known as hot clocking. More detailed information on Fermi can be found on the GT 435M GPU page.
It should be noted that the GF117 does not offer dedicated graphic ports and can therefore only be used in conjunction with Optimus.
The GT 720M supports GPU Boost 2.0, which can automatically overclock the card if the laptop cooling system allows it. This feature is available on any notebook with a graphics card of the 700M series.
Depending on the clock rates, the 3D performance of the GeForce GT 720M is somewhat above the old GT 620M, but clearly below the GT 630M in most cases. This is due to the 64 bit memory interface, which limits the performance noticeably. In comparison to the competition, the 720M offers a performance similar to the HD Graphics 4400/4600 or Radeon HD 8570M. Overall, the card is placed in the lower performance segment. Current games (as of 2013) will run fluently only in low settings.
The shader cores (also called CUDA cores) can be used for general calculations with APIs such as CUDA, DirectCompute 2.1 and OpenCL. PhysX is theoretically possible, but the GT 720M is too slow to handle both PhysX and 3D rendering in modern games. 3D Vision is not supported according to Nvidia.
The power consumption of the Geforce GT 720M should be relativly high (approximately 25 W), according to the high clock rates. As a result, the GPU is best suited for notebooks 14-15 inches in size or greater.
Average Benchmarks NVIDIA GeForce GT 750M SLI → 100%n=21
Average Benchmarks NVIDIA GeForce GT 720M → 54%n=21
- Range of benchmark values for this graphics card - Average benchmark values for this graphics card * Smaller numbers mean a higher performance 1 This benchmark is not used for the average calculation
The following benchmarks stem from our benchmarks of review laptops. The performance depends on the used graphics memory, clock rate, processor, system settings, drivers, and operating systems. So the results don't have to be representative for all laptops with this GPU. For detailed information on the benchmark results, click on the fps number.