Western Digital WD740ADFD: Bottled Lightning
by Gary Key on February 7, 2007 3:30 AM EST- Posted in
- Storage
iPeak Video/Audio Tests
The iPeak based Video/Audio benchmarks are designed around simulating media encoding and HTPC activities. These are basic benchmarks at this time as this section will be expanded once we start testing under Vista. Our change to a dual core processor will assist us in maintaining a balance between the CPU and Storage systems during the trace file creation and benchmarking processes. These benchmarks are CPU intensive in nature but also require a balanced storage system with the ability to handle read and write requests simultaneously in a very efficient manner.
The AnyDVD benchmark is heavily weighted to write requests with the results showing a common pattern with the two 16MB cache Raptors finishing first and second and the WD740ADFD once again showing its strength in the write intensive benchmarks. However, we found the WD740GD was constantly pausing during writes due to the smaller cache size, and we witnessed buffer overruns on the large file sizes included in this test. Even with the pauses, its superior transfer rates still kept the drive ahead of the other 8MB cache drives in this benchmark.
The Nero Recode 2 benchmark is weighted to streaming read requests but is balanced by continuous write operations near the end of the test. This benchmark is one of the most demanding ones in our test suite with the disk being active the entire trace file with several 100% utilization peaks. The two 16MB cache Raptors finish near the top with the WD740GD 8MB cache drive placing near the bottom. Upon reviewing the trace file results it was obvious that the WD740GD was hampered by its smaller cache and lower sustained transfer rates as it had a significant number of buffer overruns during testing.
iPeak Game Installation Tests
Our iPeak based Game Installation benchmarks simply show the ability of the hard drive to write data as quickly as possible to the disc based upon the installation software instructions. As detailed in our iPeak setup description we installed the games from our source drive in order to eliminate the optical drive bottleneck. In separate application timing we witnessed basically the same percentage spread when installing the games via our DVD drive so these results are representative of actual installation performance.
The Raptors once again finish at or near the top in our gaming tests although we expected the WD740ADFD to finish closer to the WD1500ADFD due to the amount of write operations involved in the game installations. A review of the trace files did not indicate any real standout issues with the 74GB drive, although we noticed several minor dips when the drive was reading information off the source drive. This did not occur with the 150GB Raptor.
We need to remember these tests reflect pure hard drive performance and will be mitigated by the overall system platform as we will see in our application tests. These tests are basically designed around continual read/write requests that favor large cache sizes, properly tuned firmware, and high sustained transfer rates.
iPeak Game Play Tests
The iPeak based Game Play tests are centered on the benefits of having a hard disk that can load non-linear or sequential data files quickly without interrupting the flow of the game.
When it comes to gaming the Raptors rule. All three Raptors place in the top three spots with the two 16MB cache versions finishing one and two once again. Although we are looking at pure performance results, in subjective testing the Raptor family of drives could always be identified when loading or playing a game. Although the capacities of the drives are small, if you want the best overall gaming performance in a drive with a SATA interface then your only choice are the Raptors.
The iPeak based Video/Audio benchmarks are designed around simulating media encoding and HTPC activities. These are basic benchmarks at this time as this section will be expanded once we start testing under Vista. Our change to a dual core processor will assist us in maintaining a balance between the CPU and Storage systems during the trace file creation and benchmarking processes. These benchmarks are CPU intensive in nature but also require a balanced storage system with the ability to handle read and write requests simultaneously in a very efficient manner.
The AnyDVD benchmark is heavily weighted to write requests with the results showing a common pattern with the two 16MB cache Raptors finishing first and second and the WD740ADFD once again showing its strength in the write intensive benchmarks. However, we found the WD740GD was constantly pausing during writes due to the smaller cache size, and we witnessed buffer overruns on the large file sizes included in this test. Even with the pauses, its superior transfer rates still kept the drive ahead of the other 8MB cache drives in this benchmark.
The Nero Recode 2 benchmark is weighted to streaming read requests but is balanced by continuous write operations near the end of the test. This benchmark is one of the most demanding ones in our test suite with the disk being active the entire trace file with several 100% utilization peaks. The two 16MB cache Raptors finish near the top with the WD740GD 8MB cache drive placing near the bottom. Upon reviewing the trace file results it was obvious that the WD740GD was hampered by its smaller cache and lower sustained transfer rates as it had a significant number of buffer overruns during testing.
iPeak Game Installation Tests
Our iPeak based Game Installation benchmarks simply show the ability of the hard drive to write data as quickly as possible to the disc based upon the installation software instructions. As detailed in our iPeak setup description we installed the games from our source drive in order to eliminate the optical drive bottleneck. In separate application timing we witnessed basically the same percentage spread when installing the games via our DVD drive so these results are representative of actual installation performance.
The Raptors once again finish at or near the top in our gaming tests although we expected the WD740ADFD to finish closer to the WD1500ADFD due to the amount of write operations involved in the game installations. A review of the trace files did not indicate any real standout issues with the 74GB drive, although we noticed several minor dips when the drive was reading information off the source drive. This did not occur with the 150GB Raptor.
We need to remember these tests reflect pure hard drive performance and will be mitigated by the overall system platform as we will see in our application tests. These tests are basically designed around continual read/write requests that favor large cache sizes, properly tuned firmware, and high sustained transfer rates.
iPeak Game Play Tests
The iPeak based Game Play tests are centered on the benefits of having a hard disk that can load non-linear or sequential data files quickly without interrupting the flow of the game.
When it comes to gaming the Raptors rule. All three Raptors place in the top three spots with the two 16MB cache versions finishing one and two once again. Although we are looking at pure performance results, in subjective testing the Raptor family of drives could always be identified when loading or playing a game. Although the capacities of the drives are small, if you want the best overall gaming performance in a drive with a SATA interface then your only choice are the Raptors.
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AnnonymousCoward - Tuesday, February 13, 2007 - link
Good review. I don't think I'll ever buy one of these. For as expensive as they are, the storage size is small and the performance diff is minuscule. Sims2 loading: 30s vs 31s! MP4 conversion: 3:04 vs 3:14! Amazing!Then the thermals and acoustics are really bad.
Lakeshow - Friday, February 9, 2007 - link
I think 74GB is plenty for an OS drive (hell even 36GB should suffice). Sure a 500 gig is cheaper, but I would never use that as my OS drive: simply too much stuff to back up when doing a reformat. Yeah I can do partitions, but then file transfer between partitions is much slower than between two drives, which is why I have my 74GB Raptor as OS drive, 500 giger as D:/storage drive, and then a 36GB Raptor as E: drive for torrent downloads.JonathanYoung - Thursday, February 8, 2007 - link
I think the graphs look great, but in the ones with minutes and seconds, I would suggest using a colon (e.g. 3:05) to denote minutes:seconds instead of a decimal, which makes me think 3.05 minutes (3 minutes 3 seconds). Thanks.Gary Key - Thursday, February 8, 2007 - link
We have an updated graphing engine coming on-line in the next few weeks that hopefully will fix that issue. It bugs me to no end to use the decimal point in that way. ;)TheBeagle - Wednesday, February 7, 2007 - link
Gary, as usual, you did a helluva job on a first-class review on these new generation Raptor drives. However, you especially captured my attention when you wrote "Although TLER is disabled by default, a utility is available from Western Digital to enable TLER." The existence of such a "utility" was a revelation to me. I have a couple of these same 74 GB and 150GB drives, each running in pairs in a RAID 1 environment, and I didn't have any knowledge of such an enabling/disabling "utility." Can you share the source for such a little delight and how we mere mortals get our hands in such a thing? Thanks again for a stellar report, and now we can just hope that WD adopts perpendicular recording (ala 7200.10) and SATA II specs for a world-beater drive. TheBeagleTheBeagle - Saturday, February 17, 2007 - link
I got WD to send me a copy of the TLER "utility." To my surprise, when you run it on new generation Raptor or "YS" series drives, it shows you some very interesting information. First of all there are two (2) separate TLER setting for these drives, namely a read setting and a write setting. On Raptor drives, BOTH ARE DISABLED from the factory! That's right, even though WD advertises this feature as being built into the Raptor drives, it's NOT OPERATIONAL unless you get your hands on the "secret" utility and activate it. On the YS drives, ONLY THE READ feature is activated, and the write feature is disabled. BTW, although WD says that the TLER feature on YS series drives cannot be disabled, the utility has a command that will do just that, disable both the read and write (if you have activated it) feature on those drives. I think WD has some serious explaining to do about all of this, since they (WD) have been creating a false impression to the buying public about these TLER features in these drives!Makaveli - Wednesday, February 7, 2007 - link
he is right it all comes down to your usages pattern, in general home users don't need Raid O. However, if u happen to say be running a webserver from home, or doing alot of Disk intensive stuff its a good investment, but the original Comment still stands.I would never go raid 0 in a gaming rig, a 75/150 Raptor + Storage drive is a far more optimal solution.
Makaveli - Wednesday, February 7, 2007 - link
hey is right it all comes down to your usages pattern, in general home users don't need Raid O. However, if u happen to say be running a webserver from home, or doing alot of Disk intensive stuff its a good investment, but the original Comment still stands.I would never go raid 0 in a gaming rig, a 75/150 Raptor + Storage drive is a far more optimal solution.
Brassbullet - Wednesday, February 7, 2007 - link
So does the fact that I have a WD740ADFD-00NLR as my Windows XP boot drive and a Seagate 7200.10 750 GB as my "My Documents" location mean I'm living the I/O dream? I've had this setup for months and didn't really think much of it, man was this article a PC ego booster!!littlebitstrouds - Wednesday, February 7, 2007 - link
This makes me feel good about the $109 I just paid for my new 150gig at BB because I Vista too.