Please test you GPU (Graphics hardware) with DiamCalc – Graphics Compatibility Evaluator utility. This utility will attempt to render a reference data set in order to chek if your Graphics hardware is compatible with new OctoNus HDR rendering engine. Please notice: even if you get negative test result the non-HDR rendering still available in DiamCalc3. Most of existing windows computers are compatible with non-HDR OctoNus rendering engine, though you can test it with DiamCalc 2.8 demo available on download page.
Operating system	Microsoft Windows*
Computer and processor	Personal computer with an Intel Pentium 233 MHz or faster processor is requirement. Intel Core 2 class is advisable. for fast calculation of photorealistic images.
Memory	128 megabytes (MB) of RAM minumum. 1 GB recommended.
Hard disk	25 megabytes (MB) of available hard-disk space.
Display	High-color Super VGA (800 x 600 x 16bit) or higher-resolution monitor.
Video card	VGA card with OpenGL support. To enable HDR rendering NVIDIA GeForce 6600 or higher, ATI X1300 or higher are required. We recommend to use at least NVIDIA GeForce 6800, ATI X1600.
Other	Microsoft Mouse or compatible pointing device; Microsoft Word 97 or later installed for viewing and printing reports; Anaglyphic red-blue glasses for viewing red-blue stereo images.
*Notice for Windows XP Pro x64 users: The DiamCalc3 version for long hasp keys works only with 32-bit versions of Windows. The DiamCalc3 version for short hasp key supports Windows XP Pro x64.