NVPerfKit is a comprehensive suite of performance tools to help debug and profile OpenGL and Direct3D applications. NVPerfKit will give you access to low-level performance counters inside the driver and hardware counters inside the GPU itself. The counters can be used to determine exactly how your application is using the GPU, identify performance issues, and confirm that performance problems have been resolved.

The performance counters are available directly in your OpenGL and DirectX applications and in tools such as Intel VTune and Graphic Remedy's gDEBugger via the Windows Management Instrumentation (WMI) Performance Data Helper (PDH) interface. A plug-in supporting Microsoft PIX for Windows is also provided, giving you low-latency access to NVPerfKit performance counters directly from the driver.

Here are some key features of "NVPerfKit":

· Supports GeForce 8 and 9 series GPUs, as well as earlier models.
· Supports DirectX10 on Windows Vista
· Supports DirectX 9 on Windows XP and Windows Vista
· Supports Managed and XNA applications
· No special driver needed on Windows Vista

The Performance Dashboard
· A completely customizable real-time graph overlay
· Save/load custom layouts
· Move, resize, and reconfigure your monitors
· Full set of 50+ PerfSDK Direct3D and GPU counters available
· Double-clicking color swatch in graph legend toggles display of that channel

The Frame Debugger
· Texture View
· Visualization of 2D textures, 3D textures, shadow maps, cube maps and render targets
· Full screen texture/render target visualization
· Texture Overrides: Replace your application's textures with mipmap visualizers or other debug textures all on a per-texture basis.
· API Call List
· A color-coded interactive list of every API call made in the frame.
· Dependency View
· View dependencies between draw calls.
· Improved D3D Perf Event View
· Navigate your frame using D3D Perf Events
· Set a debug break on any Perf Event
· Disable PerfHUD modifications in Perf Event ranges.
· Advanced State Inspectors
· Visually inspect all data in the graphics pipeline on a per-draw call basis.
· Edit & Continue for HLSL and .fx vertex, geometry, and pixel shaders
· Edit & Continue for Raster Operations state

The Frame Profiler
· Automated Performance Analysis
· Per-draw call graphs
· CPU and GPU Timings Graph
· Instruction Count Ratio graphs

Improved User Interface
· Numerous new hotkeys
· Keyboard accelerators for context menus
· Instant Feedback (F4) to send the PerfHUD team comments or issues from within the application.

Compatibility, stability, and reliability improvements
· True frame capture
· Extensive testing on a wide range of applications
· Allow API specification (DX9/DX10/both) for apps that create devices from both APIs