Product Description

Thinkpad W540 Mobile WorkstationFeatures

Specs

Thinkpad W540 Mobile WorkstationTech Specs

NVIDIA Quadro K2100M
NVIDIA Quadro K2100M

The NVIDIA Quadro K2100M is a DirectX 11 and OpenGL 4.3 compatible graphics card for mobile workstations. It is a Kepler-based GPU built on the GK106 chip with 576 out of 960 shader cores activated and is manufactured in 28nm at TSMC. The Quadro K2100M is built for the Intel Shark Bay generation (Haswell) and is a successor to the Quadro K2000M (Chief River platform). As a new feature, PCIe 3.0 is supported for the first time. The K2100M usually comes with 2 GB GDDR5 VRAM clocked at 750 MHz (3000 MHz effective, 48.0 GB/s).

The Quadro series offers certified drivers that are optimized for stability and performance in professional applications like CAD or DCC. OpenGL performance, for example, should be significantly better than with GeForce graphics cards of similar specifications.

Architecture

The Kepler architecture is the successor to the Fermi architecture that first appeared in laptops with the GeForce 400M series. The GK106 Kepler core offers five shader blocks, called SMX, that are clocked at the same speed as the central core. In the K2100M, 3 of 5 blocks are active leading to the 576 CUDA cores. Although more shader cores are available in the Kepler architecture as compared to the Fermi design, the Kepler shaders are still expected to be up to twice as power efficient. However, due to the missing hot clock of the shader domain, two shaders of a Kepler chip offer similar performance to just one shader of a Fermi chip (as the latter is clocked twice as fast).

Performance

The performance is clearly above the old Quadro K2000M, but slightly below the Quadro K3000M. This places the K2100M near the consumer GT 750M GPU. Therefore, most demanding games will run fluently with medium or high details.

Features

The improved feature set now includes support for up to 4 active displays. Furthermore, high resolution monitors of up to 3840 x 2160 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. 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.

Using CUDA or OpenCL 1.2, the cores of the Quadro K2100M can be used for general calculations.

Intel Core i7-4800MQ
Intel 4800MQ

The Intel Core i7-4800MQ is a high-end quad-core processor for laptops and it is based on the Haswell architecture and manufactured in 22nm. Due to Hyperthreading, the four cores can handle up to eight threads in parallel leading to better utilization of the CPU. Each core offers a base speed of 2.7 GHz but can dynamically increase clock rates with Turbo Boost up to 3.5 GHz (for 4 active cores), 3.6 GHz (for 2 active cores) and 3.7 GHz (for 1 active core).

Haswell is the successor to the Ivy Bridge architecture with improvements on both GPU and CPU performance. The CPUs are produced in 22nm and offer an optimized branch prediction as well as additional execution ports, improving the performance per clock by almost 10 percent. Furthermore, new features like AVX2 and FMA should increase the performance in future applications.

Due to these changes, the performance has been improved slightly compared to Ivy Bridge. Therefore, the 4800MQ is about 10 % faster than the former i7-3740QM.

The integrated Intel HD Graphics 4600 offers 20 Execution Units (EUs) clocked at 400 MHz up to 1300 MHz with Turbo Boost, making it about 30 % faster than the HD 4000.

The i7-4800MQ is rated at a TDP of 47 W including graphics card, memory controller and VRMs. Therefore, the CPU is only suited for laptops 15-inches or greater.

Technical Documents

USER GUIDE: t540p_w540_ug_en