AMD 900 chipset series

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AMD 900 chipset series
CPU supported Opteron,
FX,
Phenom,
Athlon (X2, X3, X4),
Sempron
Socket supported Socket F+/F, G34, C32
Socket AM3, AM3+
Southbridge(s) SB950, SB920
Desktop / mobile chipsets
Enthusiast segment 990FX
Performance segment 990X
Mainstream segment 970, 980G
Miscellaneous
Release date(s) June 1, 2011
IGP Direct3D support 10.1 (980G)
Predecessor AMD 800 chipset series

The AMD 9-Series Chipset is a set of chipsets developed by AMD, released in 2011. The chipset series uses the same silicon as AMD's previous 8-Series chipset however it's targeted at the socket AM3+ platform, including the Bulldozer line, while the 800 series is targeted at the socket AM3 platform. This allows consumers to easily identify the platform through the chipset name. In support of AM3+ CPUs, AMD has validated the 9-Series chipset for use with HyperTransport 3.1 (up to 6.4GT/s). They also worked with NVIDIA to bring SLI support to this chipset series.[1] AMD OverDrive is supported for simplified overclocking.

Lineup[edit]

Common features of all chipsets in the 9xx series:[2]

990FX[edit]

  • Codenamed RD990
  • Four physical PCIe 2.0 ×16 slots @ x8 electrical which can be combined to create two PCIe 2.0 ×16 slots @ x16 electrical, one PCIe 2.0 ×4 slot and two PCIe 2.0 ×1 slots, the chipset provides a total of 38 PCIe 2.0 lanes and 4 PCIe 2.0 for A-Link Express III solely in the Northbridge
  • HyperTransport 3.0 up to 2600 MHz and PCI Express 2.0
  • ATI CrossFireX supporting up to four graphics cards
  • 19.6 Watt TDP
  • Southbridge: SB950
  • Enthusiast discrete multi-graphics segment

990X[edit]

  • Codenamed RD980
  • One physical PCIe 2.0 ×16 slot or two physical PCIe 2.0 ×16 slots @ x8, one PCIe 2.0 ×4 slot and two PCIe 2.0 ×1 slots, the chipset provides a total of 22 PCIe 2.0 lanes and 4 PCIe 2.0 for A-Link Express III solely in the Northbridge
  • HyperTransport 3.0 up to 2600 MHz and PCI Express 2.0
  • Support for up to two graphics cards
  • 14 Watt TDP
  • Southbridge: SB950

980G[edit]

(Identical to 880G)

AMD 970[edit]

  • Codenamed RX980
  • One physical PCIe 2.0 ×16 slot, one PCIe 2.0 ×4 slot and two PCIe 2.0 ×1 slots, the chipset provides a total of 22 PCIe 2.0 lanes and 4 PCIe 2.0 for A-Link Express III solely in the Northbridge
  • HyperTransport 3.0 up to 2400 MHz and PCI Express 2.0
  • 13.6 Watt TDP
  • Southbridge: SB950/SB920

Southbridge[edit]

The SB950 is the companion southbridge that provides I/O support. It provides the following additional capabilities:

  • RAID 0, 1, 10, 5 support

Southbridge issues (SB9x0)[edit]

  • Linux platform:
    • HPET operation with MSI causes LPC DMA corruption on devices using LPC DMA (floppy, parallel port, serial port in FIR mode) because MSI requests are misinterpreted as DMA cycles by the broken LPC controller[3]
    • Enabling multiple MSI vectors for the SATA controller when three or more SATA ports are used results in loss of interrupts and system hang.

See also[edit]

References[edit]

External links[edit]