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LiteOn DH-4B1S-08 Blu-ray Burner
Blu-ray Testing:
The Blu-ray testing process is very similar to the DVD/CD testing process, only difference is that instead of using a DVD/CD we are going to be using a Blu-ray disc. The blu-ray of our choice is the movie Talladega Nights which is 20.93GBs in size. We choice this movie in particular because its among the top owned blu-ray movie, mainly because it was included in the release of the Playstation 3. For the blu-ray test we are unable to compare to any other drives, because this is the first blu-ray burner we have gotten to review (and hopefully not the last).
Media Used: Talladega Nights
Media Type: BD-Rom
Media Size: 20.93 GBs
Read:
The first part of the test corresponds to the reading of the disc. These tests will test for Average Speed, Random Access Time (ms), Burst Rate (MB/s), and the CPU Usage (%).
The LiteOn BD-4B1S-08 was able to read at an average of 2.88x, this starting at 1.67x and ending at about 3.8x. It took an overall time of 1825 seconds to read the entire disk, which would mean it read at an average of 11.46MB/s. We were expecting a better average speed than this, as it was rated for a 4x read rate. It did achieve near the 4x speed at the end, but starting off at 1.7x and slowing increasing lowered the average.
The random access time test reported it had an access time of only 108 milliseconds. This is a nice improvement over the access time on the CD and DVD tests.
The burst speed reported was only 1MB/s. I thought that this figure was wrong at first and so I ran the test again, and it still received a 1MB/s burst rate. As this seems odd because it was able to read the disk at an average of 11.5MB/s, I would expect the burst to be around 20MB/s. Although this may be an issue with the benchmark.
The CPU usage of reading the blu-ray disc was considerable lower than the usage when reading the DVD media. With only using up to 8x (which cannot be achieved with this blu-ray drive) the drive only used a maximum of four percent of your CPU processing power.
To see screen shots of the results that were posted above please view the following image:
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If you would like to see the benchmark output file, they were included at the end of the review.
- LiteOn DH-4B1S-08: Page 9
Write:
Now that the Blu-ray Read test is over we are now going to test the Blu-ray Write tests. We are going to be testing the average write speed, the percent of data in the buffer, cpu usage, and how long it took to write the data to the disk. As posted at the top of this page, we are going to be writing a copy of Talladega Nights to our Blu-ray Media.
The average write speed of the blu-ray drive was just 1.95x. Just shy of the rated 2x speeds, although it did hit 2x at times, it just wasn't a sustained rate of transfer.
While burning the disc the buffer was full nearly the entire time, with some spikes that drop it down to 90%. Overall the buffer was at 99% full most of the time.
The CPU Usage used for burning the blu-ray disc was the same as for burning a DVD, as they both used 25% of the processing power.
Overall time to burn Talladega Nights to a blu-ray disc took forty-three minutes and nineteen seconds. This seems like a long time, but then you are also burning over 20GBs of data, so in theory that isn't that bad.
To see screen shots of the results that were posted above please view the following images:
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