![]() ![]() Finally, the dedicated video encoding engine called NVENC API similar to Intel QuickSync is integrated in the chip. 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) is also integrated in the GK104 core and 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. Therefore the GPU supports up to 4 active displays. The feature set of the GTX 765M is identical to the GTX 670MX as both are based on the same GK106 core. Older and less demanding games like Star Craft 2 however were playable in Full HD with all settings set to max. Demanding games like Metro: Last Light, Crysis 3, Far Cry 3 or even SimCity were playable in 1366x768 pixels and high detail settings at fluent frame rates. In our tests the average performance of the GTX 765M was above the older GTX 670MX. The maximum performance may differ a bit depending on the cooling solution of the laptop due to better utilization of GPU Boost 2.0 on laptops with more effective cooling solutions. The graphics performance of the GeForce GTX 765M is clearly above the GTX 660M thanks to the higher amount of shaders. The implementation of this boost mode is done in the BIOS, but it is ultimately dependent upon the manufacturer of the laptop. ![]() PCIe 3.0 is now supported by the mobile Kepler series and an optional Turbo mode can automatically overclock the Nvidia card by a theoretical 15 percent 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 of similar speed to one shader of a Fermi chip (as the latter is clocked twice as fast). Although the Kepler architecture can utilize more shader cores than a Fermi chip, its shaders can be up to twice as power efficient. ![]() In the GTX 765M, four blocks are active for a total of 768 CUDA cores. ![]() The GK106 Kepler core offers five shader blocks, called SMX, that are clocked at the same speed as the central core. The Kepler architecture is the successor to the Fermi architecture that first appeared in laptops with the GeForce 400M series. Depending on the cooling headroom provided by the laptop and the application or game, up to 15 % performance gains are possible. Compared to the GTX 760M, the 765M offers a higher core clock rate from the same GK106 architecture.Īs a novelty, the GeForce 700M series implements GPU Boost 2.0 to automatically overclock the core clock rate. The NVIDIA GeForce GTX 765M is an upper mid-range DirectX 11-compatible graphics card for laptops. ![]()
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