Exactly 23MB/sec (23949KB/sec), actually.
The BENQ is at UDMA 2, though, which is odd given my two Sony/LiteON drives are at UDMA 3 and 4, Combo drive and DVDRW respectively.
I got a burst rate of 44MB/sec from the Sony/LiteON DVDRW (DW-Q30A/SHW-1635S). Why is this BenQ so slow? Is this normal? I'm seriously considering returning this thing to NewEgg. Not happy with it at all.
I've got a single SATA harddrive at the moment, so I connected the BenQ as Primary Master (end of the cable, set jumpers not cable select, Antec CobraCables) since the other two optical drives were on the secondary channel already. Could this be causing problems? I've got the latest drivers from ULi for my board, so I doubt it's that.
Don't know where to check UDMA status on the SATA drive, but I don't think it's the issue, since I get nice clean burns with the SHW-1635S at 16X on this same media, so it must be able to dish it out quickly enough.
Machine specs, just in case:
Athlon 64 3500+
Sapphire Radeon X800XT
1GB (2x512) PQI TurboMemory
200GB Maxtor SATA harddrive
Sony branded crossflashed LiteOn SOHC-5236K combo drive
Sony branded crossflashed LiteOn SHW-1635S DVD+/-RW
BenQ DW1650 DVD+/-RW