Tweet
Flaws in Via chipsets hit ATA/133, SCSI performance
A serious design defect in Via chipsets results in boards based on them substantially underforming motherboards with chipsets from Intel, SiS and ALi, a series of tests conducted by tecChannel.de has shown. The problem affects boards using both Intel and AMD chips, and the hit to hard disk performance is sufficient for tecChannel to say: "we can currently not recommend VIA chipsets for professional users who demand high performance from their hard drives and think about setting up RAID configurations."
The problem is that Via chipsets are currently unable to take full advantage of the performance of PCI. Controller cards with Ultra-ATA/ 133 chips have a maximum theoretical throughput of 133Mbytes/s (or 127.2 in real megs), and tests of non-Via motherboards with Promise and Highpoint controllers (using either Maxtor D540X or D740X) showed burst mode transfer speeds of 95-117Mbytes/s. The same tests performed on a variety of Via boards came up with speeds of 63-78Mbytes/s, clearly indicating that there's something unpleasant going on here.
for full story , http://theregister.co.uk/content/3/23502.html
The problem is that Via chipsets are currently unable to take full advantage of the performance of PCI. Controller cards with Ultra-ATA/ 133 chips have a maximum theoretical throughput of 133Mbytes/s (or 127.2 in real megs), and tests of non-Via motherboards with Promise and Highpoint controllers (using either Maxtor D540X or D740X) showed burst mode transfer speeds of 95-117Mbytes/s. The same tests performed on a variety of Via boards came up with speeds of 63-78Mbytes/s, clearly indicating that there's something unpleasant going on here.
for full story , http://theregister.co.uk/content/3/23502.html
.
Comment