On Sun, Mar 28 at 16:55, James Van Artsdalen wrote:
* SII3132-based PCIe X1 SATA card (2 ports)
This chip is slow.
PCIe cards based on the Silicon Image 3124 are much faster, peaking
around 1 GB/sec aggregate throughput. However, the 3124 is a PCI-X
chip and hence is used behind an Intel PCI serial-to-parallel bridge
for PCIe applications: this make for a more expensive card than a
3132.
All PCIe 3124 cards I have seen present all four 3124 ports as
external eSATA ports. Perhaps someone else has seen a PCIe 3124
with internal SATA connectors?
The 3124 was one of the first NCQ-capable chips on the market, and
there are definitely internal versions of it around somewhere.
While they're typically mounted on PCI-X boards, the original
reference designs worked just fine in PCI slots.
As to the 3132, it's probably limited by the single bitlane. I think
there's a 3134 variant that is PCI-e x4 which should be a lot faster.
Doesn't matter for rotating drives, but for SSDs it's important.
--eric
--
Eric D. Mudama
edmud...@mail.bounceswoosh.org
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