|
 |
LiteOn DH-4B1S-08 Blu-ray Burner
CD Testing:First on our list to test are those that relate to the read and write speeds of CDs. We are going to be using a Data-CD that is the install disk for Windows XP Professional which is 703MBs in size. Media Used: Windows XP Professional Install CD 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 DH-4B1S-08 read the disk at 30.73x while the Sony Optiarc AD7170S read the disk at 35.79x. This 16% difference will allow you to read your media faster, and during installations and task of that nature, you will notice a small difference.
The next part tested on the read section was the Random Access Time which is measured in milliseconds. For this test the lower the result the better the performance. The LiteOn DH-4B1S-08 had a random access time of 134ms while the Sony Optiarc AD7170S had one of 175ms.
The Burst Speed describes how fast data can be transferred for a short period of time. These results are not going to be the same as the sustained transfer speeds, as those are sustained and this is for short bursts. On the Burst Speed test the LiteOn DH-4B1S-08 had a burst speed of 36MB/s while the Sony Optiarc AD7170S had 47MB/s.
The CPU Usage tests simply reports back to you how much processor power is currently being used by reading the disc. For this test, it supplied us with several different read rates and then corresponding result. Overall the usage was nearly the same, with minor differences (which can be seen in the chart above). To see screen shots of the results that were posted above please view the following images:
If you would like to see the benchmark output file, they were included at the end of the review.
Write:Now that the CD Read test is over we are now going to test the CD Write tests. We are going to be testing the average write speed, the percent of adata 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 Windows XP Professional to our CD Media.
The average write speed again showed a difference in the performance between the two drives. As the LiteOn DH-4B1S-08 wrote at 29.12x the Sony Optiarc AD7170S wrote at 35.91x, a 19% difference.
The write buffer is an allocated block in memory that is used to store the information being loaded by the read requests while the write requests are taking place, this will help to prevent any bottlenecks in the performance of the write performance. Both of the drives had this block of memory full most all of the time, although there were a few times it dropped down to 90% while using the LiteOn DH-4B1S-08. Overall the average buffer use was 98% for the LiteOn DH-4B1S-08 and 100% for the Optiarc AD7170S.
The CPU Usage used by both drives were remarkably close, by only one percent off, there was nearly no difference. I was initially surprised when I seen that burning a CD required nearly 25% of the CPU.
Writing the all of Windows XP Professional install files took just over three minutes to write for the Sony Optiarc AD7170S and an additional thirty seconds for the LiteOn DH-4B1S-08 triple burner. Burning this data took an additional 15% longer on the LiteOn triple burner as it did on the Sony CD-DVD Burner. As this may not seem like a big difference, if time is important to you or if you burn a lot of CD/DVD's then the improvement would be a plus. To see screen shots of the results that were posted above please view the following images:
REALTIME PRICING |
|
|
:: Copyright © 2002-2008 Techware Labs, LLC :: All Rights Reserved |
