Greetings all. Have a shiney new 2500A unit by itself, set as master, on my 2nd IDE channel.
With the latest Nero CDSpeed, I get odd CPU usage and interface burst rate results. This is with reading both CDR and DVD-R media.
CPU Usage:
1X = 8%
2X = 15%
4X = 40%
8X = 82%
Interface Burst Transfer rate:
1 MB/s
Yep, I know what you're thinking. But DMA is in fact enabled. Nero infotool reports it is running in UDMA mode 2.
My system is an AMD 2600+ with an MSI K7N2 (nforce2) mobo. Fresh WinXP install with all latest drivers. Initially I was running without the NVIDIA SW IDE driver, tried installing that as well, making sure it was running, and still same results.
Only media I have currently is 2X, but I have no problems burning at this speed consistently. That's way faster than 1 MB/sec. And the CDSpeed graphs look nice and curved, no flatlining.
Any idea what's going on here? Or should I take these results with a grain of salt?
(I must add this drive seems great initially, I have no problems reading old Princo DVD-RW discs that my A05 burned and could barely read without CRC errors. yay!)
