Optical Drives Guide

Sony BWU-100A Blu-ray Writer review

Sony BWU-100A (2x Blu-ray Writer)

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DVD-ROM and BD-R Benchmark

DVD-ROM and BD-R Benchmark

Here are some figures to better understand the read capabilities of this Blu-ray drive. This was done using Nero DVD Speed and we tested with two commercially pressed DVD-ROMs (a single-layer and a dual-layer), four recordable DVD media (DVD-R, DVD-RW, DVD+R and DVD+RW) and we also had the BD-R media included with the drive.

Sony rates its BWU-100A Blu-ray drive at 2x for both read and write speed and as Nero DVD Speed clearly shows, this drive is very consistent and starts off at the maximum speed right at the beginning when reading BD media. This is unlike the other formats, which start off at around 3x and gradually reaches its maximum of 8x, due to their use of CAV, which results in a variable rate of transfer. Compared to the LG Blu-ray drive (GBW-H10N), the Sony is slower by around 2x but that difference is clearly evident from their respective specifications.

Also, like the LG drive, CPU usage of the Sony BWU-100A was significantly higher than the typical DVD burner, especially when it comes to DVD formats. CPU usage for Blu-ray media appears normal, with a peak of only 3%. Contrast that with the high of 33% that we saw for some DVD media. The only positive is that this drive does have slightly lower CPU usage than the LG drive, which hit 44% on some occasions. Hopefully, we will continue to see further optimization for DVD media from later Blu-ray models, as taking up 1/3 of CPU usage is definitely still too high.