ROP Pixel Pipelines (Raster Operations)

07:00 - Wednesday 14 April 2004 by Lars Weinand
Source: Tom's Hardware – Keywords: performance, leap

Table of content:
13 – ROP Pixel Pipelines (Raster Op...
  1. 1 – Introduction
  2. 2 – NV40 Alias GeForce 6800 Ultra
  3. 3 – The GeForce Compared To The Rest Of Its Class
  4. 4 – The Hardware
  5. 5 – The Hardware, Continued
  6. 6 – The Hardware, Continued
  7. 7 – The Hardware, Continued
  8. 8 – Cine FX 3.0
  9. 9 – Pixel Processing Engine
  10. 10 – Pixel Processing Engine
  11. 11 – Vertex Engine
  12. 12 – Shader Model 3.0
  13. 13 – ROP Pixel Pipelines (Raster Operations)
  14. 14 – Possible Applications And Other Peculiarities
  15. 15 – Displacement Mapping
  16. 16 – More Goodies
  17. 17 – Video Processor
  18. 18 – Video Processor, Continued
  19. 19 – ForceWare 60 Driver
  20. 20 – Power Consumption
  21. 21 – Power Consumption, Continued
  22. 22 – Video Acceleration Tests
  23. 23 – Test Setup
  24. 24 – Benchmarks
  25. 25 – Unreal Tournament 2004, Continued
  26. 26 – Unreal Tournament 2004, Continued
  27. 27 – Unreal Tournament 2004, Continued
  28. 28 – Call Of Duty
  29. 29 – Call Of Duty, Continued
  30. 30 – Call Of Duty, Continued
  31. 31 – Call Of Duty, Continued
  32. 32 – AquaMark 3
  33. 33 – AquaMark 3, Continued
  34. 34 – X2 - The Threat
  35. 35 – X2 - The Threat, Continued
  36. 36 – Breed Demo
  37. 37 – Breed Demo, Continued
  38. 38 – Colin McRae Rally 4 Demo
  39. 39 – Colin McRae Rally 4 Demo, Continued
  40. 40 – Nascar Thunder 2004
  41. 41 – Halo - Combat Evolved
  42. 42 – FarCry
  43. 43 – FarCry, Continued
  44. 44 – Image Quality - FSAA
  45. 45 – Image Quality - Anisotropic
  46. 46 – Image Quality - Anisotropic, Continued
  47. 47 – Shader Quality - FarCry
  48. 48 – Image Quality - Summary
  49. 49 – Conclusion

ROP Pixel Pipelines (Raster Operations)

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How many pixels can actually be rendered per clock cycle depends in no small part on the driver settings and the 3D engine of the game being played. NVIDIA furnishes the following example to illustrate this point:

Compared to NV35 / 38, the new ROP engine has seen quite a number of improvements, such as the new rotated grid anti aliasing method and a more powerful memory interface. NVIDIA claims to have achieved a twofold memory performance increase compared to NV35. A direct comparison of theoretical memory bandwidth based on memory frequency (425MHz for NV35, 550MHz for NV40) makes it obvious that this improvement is not achieved through higher clockspeeds alone. The benchmarks scores at 1600x1200 with FSAA enabled back up NVIDIA's claims quite impressively.

The ROP subsystem o the GeForce 6800 comprises:

16 pixels per clock Color & Z 32 pixels per clock Z-only 64-bit FP Frame Buffer Blending Lossless Color & Z-Compression High Quality AA - Rotated Grid Full MRT Support Accelerated Shadow Rendering

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