Intel Stakes Its Vision of the PC Future with 775 Launch

New Chipsets: 925X, 915G, 915P, 915GV

Let's get rid of the code names first. Alderwood is officially called 925X Express Chipset and is the successor to 875P (aka Canterwood). The latter will not be phased out before the end of the year, however. With a price point of at least $ 50 per 1,000 units, the 925X is the premium chipset for the new LGA 775 architecture.

The code name Grantsdale covers three chipsets: 915G with Intel's Graphics Media Accelerator 900 integrated graphics, 915P for discrete graphics and 915GV, a low-cost integrated graphics version without the option to upgrade discrete PCIe graphics (Intel calls that PCI Express Graphics or PEG). Together they are the 915 Express Chipset family and follow the 865 product line, known as Springdale.

None of the new chipsets supports AGP, but either DDR2 or DDR1 memory can be used. The memory used depends on the availability of memory sockets, which in turn is up to the motherboard makers.

No company is going to introduce the 925X premium chipset with support for DDR1 memory, so this platform will definitely be DDR2 only. In contrast, we expect to see lots of 915G/P motherboards either with sockets for both DDR2 and DDR1 memory or one of these types. However, the availability of different memory sockets does not bridge for the technology gap: You can't mix DDR1 and DDR2, and according to our experience with former memory technology transitions, it wouldn't be a wise thing to do performance-wise.

As is customary, Intel splits their core logic products into two building blocks for scalability. The chipset names mentioned above refer to the memory controller hub or MCH (also known as Northbridge), which consists of the graphics interface and the memory controller. Here, the Accelerated Graphics Port or AGP is being replaced by a x16 PCI Express interface that delivers four times the bandwidth. The second fundamental change is that the memory controller now supports DDR2-400 and DDR2-533 memory in addition to conventional DDR400 RAMs. Also, all of the new chipsets are dual channel types.

A Southbridge is needed to pair with the Northbridge, and Intel calls it the ICH (I/O Controller Hub). Here you can find all the interfaces and neat features that make the difference between a top-notch computer and a lame duck.

875P vs. 925X/915
  1. Intel's 775 Launch Mixes Ambition With A Strong Aftertaste
  2. First Contact
  3. Obstacles And Hurdles
  4. More Findings
  5. New Socket: LGA 775
  6. LGA 775 Processor Installation
  7. LGA 775 Processor Installation, Continued
  8. LGA 775 Processor Installation, Continued
  9. MSI's CPU Installation Tool
  10. Transitional Products
  11. Poor Thing: Intel Reference Cooler
  12. New Processors: P4 Prescott Up To 3.6 GHz
  13. Specification Overview
  14. Model And Pricing Information
  15. Processor Overview
  16. New Chipsets: 925X, 915G, 915P, 915GV
  17. New Chipsets: 925X, 915G, 915P, 915GV, Continued
  18. 925X Express Chipset
  19. 915G Express Chipset
  20. 915G Express Chipset, Continued
  21. 915G Express Chipset, Continued
  22. 915P Express Chipset
  23. Chipset Devices
  24. Intel Puts The Lock On Overclocking
  25. How To Unlock The Overclocking Lock
  26. New Memory: DDR2-533, Continued
  27. DDR2 Memory Vendors
  28. Intel Flex Memory Technology
  29. New Interlink: PCI Express
  30. More SATA, More RAID, More Ports
  31. Matrix RAID
  32. Creating A RAID Array
  33. More HD Performance For Free: Command Queuing
  34. More Networking: Intel Wireless Connect Technology
  35. New Audio: High Definition Audio
  36. Asus P5AD2 Premium
  37. Foxconn 925A01
  38. Test Setup
  39. Benchmarks And Settings
  40. Platform Benchmarks
  41. DirectX 8 Benchmarks
  42. DirectX 8 Benchmarks, Continued
  43. DirectX 9 Benchmarks, Continued
  44. Video Benchmarks
  45. Video Benchmarks, Continued
  46. Application Benchmarks
  47. Application Benchmarks, Continued
  48. Synthetic Benchmarks
  49. Synthetic Benchmarks, Continued
  50. Processor Power Consumption
  51. Integrated Graphics Benchmarks
  52. Game Benchmarks
  53. Halo
  54. Far Cry
  55. Video Performance
  56. Networking Benchmarks
  57. Storage Subsystem Benchmarks
  58. Conclusion
  59. A Final Note
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  • So how do you unlock it?