Mboard RC415ST-HM : Pls Help determine PCI-e x16 spec..

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zapp22

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compaq/hp sr2170nx uses the RC415ST-HM 'Alhena5' motherboard with some version of the ATI Xpress 1100-for-intel-processors chipset. I have not succeeded in discovering the northbridge and southbridge in use [would SIW reveal that?]
At any rate, I have not succeeded in finding a add-in graphics card that will actually work so I'm trying to nail down exactly which PCI-e x16 spec the chipset supports, and what slot/connector spec is on the board. It seems the answer to the latter is "2.0" but I fear the onboard logic is supportive of 1.x .

can anyone help me out here?
 

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What's the exact make and model of the PC in question?
 

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At that link the sr2170nx is the model of the computer. The motherboard is a RC415ST-HM 'Alhena5' that you listed in your first post. If this is your motherboard below, it only has 1 pcie X16 slot. This link will give more specs on it. It was made by ECS and is their model # ECS RC415ST-HM.

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they don't answer the question: pci x16 version ??which?? I'm trying to nail down exactly which PCI-e x16 spec the chipset supports, and what slot/connector spec is on the board - my original question

does "x16" suggest anything about the version of PCI-e that the mainboard supports?
It wouldn't be shocking to find a 2.x-spec physical interface on the board but a chipset combo that only supports 1.x spec. My understanding is that many well-implemented 2.0 spec cards are backward-compatible to 1.x spec [reduced bandwidth], but beginning with 2.1 that is not a given - depends on the design. Its expensive to just buy cards at random and plug-in to see if they work :(

maybe I could get at it by running SIW, get the southbridge part and try looking up the spec of it.
 

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Windows XP Pro SP3, Windows 7 Pro 32-bit, Win...Pentium 4 3.2GHz, Pentium 4 3.4GHz 64bit, Atom,4GB matched, 1GB, 2.5GB, 4.0 GBGeforce 8400 GS and others
Computer Manufacturer/Model Number
HP DC7600, HP DC7600[2], HP DC7100, Samsung NC10
OS
Windows XP Pro SP3, Windows 7 Pro 32-bit, Windows 7 Ultimate 64bit, Windows XP Home SP3
CPU
Pentium 4 3.2GHz, Pentium 4 3.4GHz 64bit, Atom,
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Dunno
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4GB matched, 1GB, 2.5GB, 4.0 GB
Graphics Card(s)
Geforce 8400 GS and others
Sound Card
RealteK ALC260 and others
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Asus HD
Screen Resolution
1920x1080
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WD Caviar 640gb SATA
Cooling
We Be Cool
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