Specifications

Release 331 Quadro, NVS, Tesla, & GRID Drivers for Windows - Version 332.50 RN-WQ33250-01_v01

NVIDIA Action for Some GeForce-based Systems

For GeForce GPUs with 2.75 GB or less of video memory, the NVIDIA display driver

constrains TAG memory to just below 4 GB

. In this scenario, the Shared System Memory

component of TAG is limited first, before limiting Dedicated Video Memory.

This is a policy decision within the driver, and results in reliable reporting of sub-4 GB

TAG memory.

When TAG Reporting Would Not Be Limited

For GeForce-based GPUs with more than 2.75 GB of video memory, as well as all Quadro

and Tesla GPUs, the NVIDIA display driver does not constrain TAG memory reporting.

The disadvantage of constraining TAG on systems with larger amounts of video and

system memory is that memory which otherwise would be available for graphics use is

no longer available. Since shared system memory is limited first, driver components and

algorithms utilizing shared system memory may suffer performance degradation when

TAG is constrained.

Since these and similar scenarios are prevalent in many Workstation applications, the

NVIDIA driver avoids constraining TAG on all Quadro and Tesla-based systems.

Likewise, the driver does not constrain TAG for GeForce-based systems with more than

2.75 GB of video memory.

1. The WDDM guidelines dictate minimum and maximum values for the components, but the dis-

play driver may further constrain the values that are reported (within the allowed minimum and

maximum).