AMD 990FX / SB950
Chipsets
The AMD 990FX chipset is designed for performance enthusiasts and hardcore
gamers with 38 lanes of PCI Express 2.0 bandwidth. As such, an AMD
990FX-based motherboard can support a pair of PCI Express 2.0 x16 slots, each
with x16 lanes of bandwidth.
All of
this PCI Express 2.0 bandwidth comes in handy because today's graphics cards are
pushing ever higher amounts of bandwidth along the PCI Express bus. In
most other respects the AMD 990FX / SB950 and AMD 890FX / SB850 are
basically the same silicon, save for HT 3.0 support added
to the 990FX to handle Bulldozer, support for nVidia SLI and some back
end power improvements.
|
AMD 800 and 900-series Chipsets
|
|
AMD 990FX |
AMD 890FX |
| Code Name |
'RD990' |
'RD890' |
| CPU |
Socket AM3+/AM3 |
Socket AM3 |
| Memory |
1333MHz DDR3 |
1333MHz DDR3 |
| Graphics Expansion |
2x16 PCI Express 2.0 |
2x16 PCI Express 2.0 |
| AMD Crossfire Support |
yes |
yes |
| nVidia SLI support |
yes |
no |
SouthBridge:
Peripheral Expansion |
SB950
4x1
PCI-E 2.0,
6x1
PCI-E 2.0 |
SB850
6x1 PCI Express 2.0, 2XPCI Express
2.0 on SB850 |
| Hypertransport |
2600 HT 3.0 / 3200 HT 3.1 |
2600 HT 3.0 |
| Process |
65nm |
65nm |
| TDP |
19.6W |
19.6W |
| IOMMU 2.0 |
yes |
Yes |
| Storage |
6xSATA 6Gb/s |
6xSATA 6Gb/s |
| USB |
14x USB 2.0,
2x USB 1.1
|
14X USB 2.0,
2x USB 1.1 | | |
AMD's 990FX northbridge is paired with the AMD
SB950 southbridge. The AMD SB950 supports six 6GB/s SATA III channels with full RAID support. With
all of the extra bandwidth the SB950 southbridge controller takes on, AMD doubled the
bus speed between it and the 990FX northbridge to 4GB/s
ALink Express III.
Next up, overclocking and BIOS screen shots.
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