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Discussion Starter · #1 ·
Hello, I have a system with the following setup:

AsRock K7vt4a pro
AMD Athlon XP 3000+
2x1GB PC3200 DDR1 (Running at 2700)
Eminent PCI Sata controller
Samsung 2TB Spinpoint ECO Green
Windows Server 2003 (Fully updated)

I have hooked up the Samsung 2TB disk and another 1GB disk to the sata controller. Now when doing benchmarks I get the following results:


Seagate 1TB


Samsung 2TB

Since I'm using a SATA2 HDD on a SATA1 controller (through PCI) I wasn't hoping for breakneck speeds, but this is crazy. I'm struggling to figure out why the read speed is so slow: I'm not even getting 4 MB/s. At first I thought the Samsung disk was misaligned, but that can nowhere near explain the slow speed. :(

Does anyone have a clue what might be causing this? Maybe the controller cannot handle disks of this size?

Thanks for any help! :)
Sav
 

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I would look in Device Manager under IDE ATA/ATAPI Controllers (yes, even for SATA) to see if your drive is running in UDMA or PIO mode. It should be UDMA mode.

BTW, my 1TB Caviar Black shows 102 MB/s for read and 99 MB/s for write using the same test program.
 

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Discussion Starter · #3 ·
I have checked the transfer mode for all disks: it was DMA. The write speed also suggests that DMA is being used (PIO wouldn't be able to handle this write speed, right?)....
 
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