Take a look at this info

[johnson636]

SONY DVD RW DRU-500A 2.0g
Current Profile: DVD-R

Disc Information:
Status: Empty
Erasable: No
Free Sectors: 2,298,496
Free Space: 4,707,319,808 bytes
Free Time: 510:48:46 (MM:SS:FF)
Supported Write Speeds: 1x, 2x, 4x

Pre-recorded Information:
Manufacturer ID: ONIDTECH

Physical Format Information (Last Recorded):
Book Type: DVD-R
Part Version: 5
Disc Size: 120mm
Maximum Read Rate: Not Specified
Number of Layers: 1
Track Path: Parallel Track Path (PTP)
Linear Density: 0.267 um/bit
Track Density: 0.74 um/track

Above is some info on the discs that I have. As you can see, it supports 1x,2x,4x write speeds, but I'm only getting a 1x burn speed. I forced a 4x write speed, but no go. I've used Nero 6, DVD Decrypter, and Alcohol 120%; I forced 4x on each software, but onlt burned at 1x

I have DMA mode turned on.

XP Home 1.7ghz 256MB

 

[PC-GUY]

Reading what some of the members at dvdrhelp said if fact I'll quote "This stuff is cheap, but you know what they say, "you get what you pay for."
And other say they could only burn at 1x. So based on what I've read I would say your not doing anything wrong that using different media couldn't fix. Have you tried any other media?

 

[scarecrow]

Same burner, same firmware. Stick to a tight range of media: Ritek G03/04, Sony, Verbatim +R, Intenso +R (manufacturer Optodisc- a Prodisc branch). The Sony can be a coaster machine with the wrong media inserted...