NVIDIA GeForce RTX 2060 Mobile vs Intel Iris Plus Graphics 655

The NVIDIA GeForce RTX 2060 for laptops is a fast mid-range gaming graphics card for laptops. It is based on the desktop RTX 2060 chip but at reduced GPU clock rates (-30%) and reduces power consumption (80 - 90 Watt TGP versus 160 Watt for the desktop version).

In 2020 Nvidia also released a refreshed version with the same name. It is based on the TU106B chip and offers new voltage regulators and controllers. Furthermore, the maximum TGP was increased to 115 Watt and therefore the GPU can clock higher (1005 - 1560 MHz). The memory speed however was decreased to 11 Gbps leading to a slightly better overall performance compared to the old version.

NVIDIA manufacturers the Turing TU106 chip on a 12 nm FinFET process and includes features like Deep Learning Super Sampling (DLSS) and Real-Time Ray Tracing (RTRT), which should combine to create more realistic lighting effects than older GPUs based on the company's Pascal architecture (if the games supports it). The RTX 2060 is also DisplayPort 1.4 ready, while there is also support for HDMI 2.0b, HDR, Simultaneous Multi-Projection (SMP) and H.265 video en/decoding (PlayReady 3.0).

The gaming performance of the mobile RTX 2060 is similar to an old Nvidia GeForce GTX 1070 (Desktop) and clearly behind the desktop RTX 2060. The mobile GTX 1660 Ti is only a few percent behind in our gaming benhcmarks, but offers no raytracing features built in the GPU. For demanding games of 2019, the RTX 2060 is most suited for full HD (1080p) and high / ultra settings. However, there is not much headroom to activate the taxing raytracing features in most games.

The power consumption is rated at 80 - 90 Watt TGP by Nvidia and therefore similar to the Max-Q variants of the RTX 2070 and RTX 2080. In our real world laptop-tests the power draw of the whole systems running The Witcher 3 shows that the RTX 2060 slots in slightly below the Max-Q Variants and slightly above the GTX 1660 Ti mobile (as expected).

The Intel Iris Plus Graphics 655 (GT3e) is a processor graphics card announced in September 2017. As the successor to the Intel Iris Graphics 650 (Kaby Lake), the Iris Plus Graphics 655 is used for 28-Watt Coffee Lake-U models. The biggest difference is the doubled eDRAM-cache at 128 MB. There should not be any big changes compared to the Iris Graphics 650.

The so called GT3e version of the Kaby Lake GPU still has 48 Execution Units (EUs), which can reach up to 1200 MHz (previously 1100 MHz) depending on the model. Besides eDRAM cache, the Iris 655 can also access the system memory (2x 64 Bit DDR3L-2133/DDR4-2400) via processor interface.

Compared to the Iris Plus 640 from the 15-Watt models, the Iris 655 only has a slightly higher maximum clock as well as almost twice the TDP, which allows a better utilization of the Turbo Boost potential.

Performance

The exact performance of the Iris Plus Graphics 655 depends on the CPU model, because maximum clock as well as the size of the L3 cache can differ a bit. The system memory (DDR3/DDR4) will influence the performance as well.

The fastest chips are high-clocked Core i7 models like the Core i7-8559U. Depending on the game, the Iris Plus 655 will probably be on par with a dedicated GeForce 930M or GeForce 940MX and can handle smooth gameplay in modern titles in low up to medium settings.

Features

The reworked video engine now fully supports hardware decoding of H.265/HEVC videos. Contrary to Skylake, however, Kaby Lake can now also decode H.265/HEVC Main 10 with a 10-bit color depth as well as Google's VP9 codec. The video output is possible via DP 1.2/eDP 1.3 (up to 3840 x 2160 @60 Hz), whereas HDMI is also supported in the older 1.4a standard. An HDMI 2.0 output can be added via converter from DisplayPort. The GPU can drive up to three displays simultaneously.

Power Consumption

The Iris Plus Graphics 655 is used for 28-Watt processor and therefore small/medium-sized notebooks.