Bapco MobileMark 2012 1.5
Version and / or Patch Used: 2012 1.5
Developer Homepage: http://www.bapco.com
Test Homepage: http://www.bapco.com
MobileMark 2012 1.5 is an application-based benchmark that reflects usage patterns of business users in the areas of office productivity, media creation, and media consumption. Unlike benchmarks that only measure battery life, MobileMark 2012 measures battery life and performance simultaneously, showing how well a system design addresses the inherent tradeoffs between performance and power management.
There are consumer 256GB class SSDs that give a notebook better battery life than the Fujitsu FSXtreme 240GB, but there are also several that do much worse.
Power Limited Performance
In a notebook's power-limited state, the CPU, memory, PCIe bus, and SATA bus operate at lower speeds to reduce power. This increases the battery life, but also means nearly all SSDs perform at the same performance level. Two SLC drives are on this list, the Fujitsu FSXtreme 240GB we're testing today, and the SuperSSpeed S301; both deliver a bit higher performance in a power-limited state than the MLC and TLC drives. There is a four point difference between a 2.5" HDD found in several notebooks from the manufacturer and a MLC SSD on this test, so each point carries a lot of weight. There is a five point difference between that same OEM HDD and the two SLC drives. This shows that the Fujitsu FSXtreme is very efficient when the busses are limited to save power.
NAS Cache Performance and Considerations
In this test we use an off the shelf QNAP TS-653 Pro six-bay small business NAS (review coming later this month), and pair it with four Hitachi 7,200 RPM HDDs designed for use in NAS products. We tested with and without the Fujitsu FSXtreme 240GB as a cache drive in a few random performance tests. The connection back to the host system is a single gigabit Ethernet connection. The TS-653 Pro does not have 10GbE capability, but if it did, we suspect the random performance would have increased even further.
I also test NAS and server storage performance at TweakTown. A trend is growing and is expected to get much larger in the coming years. Netgear, QNAP, and Synology already allow end users to add a SSD to the storage stack to increase random data performance over the network. We suspect Thecus will follow suit as well with a possible announcement in January at CES.
The problem with most users taking the low-cost route with consumer SSDs is the limited endurance. Samsung's 850 Pro series tops the write endurance category with 150TB data writes to the drive. SanDisk and other manufacturers use the WMI scale that weighs the data writes differently; random data (the data most likely to be placed on a NAS cache drive) wears the WMI scale faster than sequential data.
Until now, it's been very difficult for me to recommend a consumer SSD for use in a NAS for cache. Endurance plays a very large factor, and while consumer MLC drives will work, most of us build a NAS and stick it on a shelf for a decade with little thought going to the product other than daily use. I'm not convinced a consumer MLC SSD is the right product to pair with since nearly all of the data writes are small random bits.
On the other hand, the Fujitsu FSXtreme product line has the endurance to handle the workload over an extended period of time.
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