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IDE "speed" question
I know that PCI / AGP / USB interfaces have different speeds or rather data
transfer rates. I'm wondering if anyone could tell me what this rate is for the IDE interface because I'm considering getting a PCI IDE card (to add more than 2 HDs) and I'm wondering if the fact that the card is PCI will slow down access to the PCI card connected HD in relative terms in comparison to the native motherboard IDE connected HDs? Thanks. |
#2
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There will be no difference, the motherboard IDE ports are also connected to the PCI bus. The maximum transfer speed of a standard PCI bus is 133 MB/sec. - wrote: I know that PCI / AGP / USB interfaces have different speeds or rather data transfer rates. I'm wondering if anyone could tell me what this rate is for the IDE interface because I'm considering getting a PCI IDE card (to add more than 2 HDs) and I'm wondering if the fact that the card is PCI will slow down access to the PCI card connected HD in relative terms in comparison to the native motherboard IDE connected HDs? Thanks. -- Mike Walsh West Palm Beach, Florida, U.S.A. |
#3
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On Mon, 17 Nov 2003 19:39:46 GMT, Mike Walsh
wrote: - wrote: I know that PCI / AGP / USB interfaces have different speeds or rather data transfer rates. I'm wondering if anyone could tell me what this rate is for the IDE interface because I'm considering getting a PCI IDE card (to add more than 2 HDs) and I'm wondering if the fact that the card is PCI will slow down access to the PCI card connected HD in relative terms in comparison to the native motherboard IDE connected HDs? Thanks. There will be no difference, the motherboard IDE ports are also connected to the PCI bus. The maximum transfer speed of a standard PCI bus is 133 MB/sec. The motherboard chipset IDE ports are no longer connected to the PCI bus on any semi-modern board (2-3 years old or newer). They do still have same primary bottleneck due to adherence to the ATA spec, but effective throughput or latency is better not only for the ATA controller but the remaining PCI devices. That does make a system faster by using the onboard ports versus a similar controller as a PCI IDE card or additional chip on the board, which would be on the PCI bus also. Only the southbridge-integrated controller is removed from the PCI bus. Dave |
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