Intel HD Graphics (Skylake) vs Intel HD Graphics 5000 vs Intel HD Graphics 405 (Braswell)

Intel HD Graphics (Skylake)

The Intel HD Graphics (Skylake) (GT1) is an integrated graphics unit, which can be found in low-end ULV (Ultra Low Voltage) processors of the Skylake generation. In most CPUs, this GPU was named Intel HD Graphics 510 or Intel HD Graphics 515 (see both pages for benchmarks and information).

This "GT1" version of the Skylake GPU offers 12 Execution Units (EUs) clocked at up to 800 MHz (depending on the CPU model). Due to its lack of dedicated graphics memory or eDRAM cache, the HD Graphics has to access the main memory (2x 64bit DDR3L-1600 / DDR4-2133).

Performance

Depending on various factors like memory configuration, the HD Graphics should perform similar to the older HD Graphics 4200 and will handle only some older and less demanding games in lowest settings.

Features

The revised video engine now decodes H.265/HEVC completely in hardware and thereby much more efficiently than before. Displays can be connected via DP 1.2 / eDP 1.3 (max. 3840 x 2160 @ 60 Hz), whereas HDMI is limited to the older version 1.4a (max. 3840 x 2160 @ 30 Hz). However, HDMI 2.0 can be added using a DisplayPort converter. Up to three displays can be controlled simultaneously.

Power Consumption

The HD Graphics (Skylake) can be found in mobile processors specified at 6 W TDP and is therefore suited for passively cooled 2-in-1 laptops and tablets.

Intel HD Graphics 5000

The Intel HD Graphics 5000 (GT3) is a processor graphics card included in some of the ULV Haswell processors of 2013 (e.g. Core i5-4250U). It represents the highest configuration of the integrated graphics unit (40 execution units), but lacks the additional eDRAM cache of the Iris Pro Graphics 5200. The relatively low base clock can be automatically overclocked using Turbo Boost technology. Depending on the processor model, the base and turbo clock rates may differ, resulting in varying graphics performance between CPU models.

In comparison to the HD 4000, the graphics core has been modified extensively. The GPU supports DirectX 11.1, OpenCL 1.2 and OpenGL 4.0. It also features an improved decoder for 4K videos and the fast Quick Sync encoder.

According to benchmarks in 3DMark 11, the HD Graphics 5000 is up to 50 percent faster than the previous HD 4000. In games, however, the performance advantage is significantly lower. With simultaneous load on the CPU, the low TDP of the ULV models (15 W) limits the Turbo Boost of the GPU. Although the HD 5000 features 40 Execution Units, the graphics performance is still somewhat below the HD Graphics 4600 with only 20 EUs (HD 4000: 16 EUs). Overall, the HD 5000 is thus just behind the AMD Radeon HD 7660G and at the level of a dedicated Radeon HD 7650M. Current games (as of 2013) will run fluently in low to medium-low settings.

Due to the 22nm 3D Tri-Gate production process, power consumption is relatively low. The HD Graphics 5000 is available on certain ULV dual-core Haswell models in the 15 Watt TDP range.

Intel HD Graphics 405 (Braswell)

The Intel HD Graphics 405 (Braswell)  is an integrated graphics card in the low end SoCs of the Braswell series (e.g. Pentium N3710). It is based on the same architecture as the integrated GPU of the Broadwell graphics cards (e.g. HD Graphics 5300), but offers less shader cores and slower clock speeds.

The GPU was simply called Intel HD Graphics (Broadwell) before 2016 and included also the slower 12 EUs version in the Celeron model. The Graphics 405 name currently only stands for 16-core-versions in Pentium models. The 12 EU version is now called Intel HD Graphics 400.

The clock speed and memory configuration can still vary from model to model.

Gaming performance ist still only suited for older or less demanding games. Often also the processor is limited gaming performance (e.g. in the dual-core N3000).

The SoC also integrates a video decoding engine that should be able to handle 4K H.265 videos.