Tegra 4 Whitepaper - Nvidia

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P a g e | 18client and implements a very fine tuned arbitration scheme that delivers high bandwidthfor bandwidth-hungry render and geometry requests.GPU Request Grouping: When requests are made to access regions of memory thatare not contained within currently open banks, the MC has to close the currently openedbanks, and then activate new banks that include the desired memory cells or regions.This process not only impacts latency and bandwidth, but also requires higher powerconsumption. The NVIDIA ® Tegra ® 4 processor’s GPU is aware of the current systemmemory configuration, and optimizes access patterns. The GPU can group togethermemory requests that access the same memory bank. The MC controller can also reorderindependent memory requests into groups based on their memory bank accesspattern. Such features deliver higher efficiency memory accesses, and reduce powerconsumption by limiting frequent memory bank switching.Tegra 4 / Tegra 4i Memory Controller Enhancements vs Tegra 3: The memorycontroller in the Tegra 4 and 4i processors includes additional buffering in both the MCand client interfaces. Higher burst bandwidth and higher latency tolerance permit moreaggressive power saving. Enhanced request coalescing improves memory efficiency.NVIDIA Tegra 4 GPU Architecture February 2013
P a g e | 19Enabling Advanced Graphics Effects in Mobile GamesThe NVIDIA ® Tegra ® 4 processor’s GPU delivers up to 6x the raw shading power of Tegra 3processor, enabling game developers to employ advanced graphical effects, detailed models,and immersive environments to deliver differentiated and visually richer mobile gamingexperiences.Table 7 highlights a few of the many advanced graphics effects that can now be included inmobile games due to the superior performance and capabilities of the Tegra 4 processor.Tegra 4 FeatureUp to 6x Higher Geometry andVertex shading performanceGraphics Effects in GamesMore realistic character modelsMore complex skinned charactersMore realistic crowd scenesMore realistic geometric particles such as rocks,plants, mountain terrainsBetter dynamic meshes for more realistic waterwaves, vortex effects etc.Support for depth and shadowtexturesHigher Pixel shading performancewith support for advanced mathfunctionsMore realistic shadows in games that take intoaccount lighting variances, multiple light sources,cascaded shadow maps, etc.Create expansive and detailed terrainsEnhanced detail for low polygon modelsHigh Dynamic Range (HDR) lighting in gamesCube mapping for better dynamic reflections,global illumination, and more realistic lightingeffectsSubsurface scattering effects for more realistictranslucency in objects such as skin, jade, metal,etc.Table 7 - Tegra 4 GPU enhancements for Richer Game VisualsNVIDIA Tegra 4 GPU Architecture February 2013
Page 1 and 2: WhitepaperNVIDIA Tegra 4 FamilyGPU
Page 3 and 4: P a g e | 3IntroductionMobile devic
Page 5 and 6: P a g e | 5Figure 1 NVIDIA Tegra 4
Page 7 and 8: P a g e | 7blended with existing fr
Page 9 and 10: P a g e | 91x DP4 + MFUA total of 1
Page 11: P a g e | 11 2x/4x Multisample Anti
Page 14 and 15: P a g e | 14Architectural Efficienc
Page 16 and 17: P a g e | 16Comparative Benchmark P
Page 20 and 21: P a g e | 20The following screen sh
Page 22 and 23: P a g e | 22These unique NVIDIA ®
Page 24 and 25: P a g e | 24Appendix A: Tegra 4 GPU
Page 26: P a g e | 26NoticeALL INFORMATION P

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