Review: Silicon Power 16GB UHS-1 Class 10 SDHC Reviewed by: Seán Byrne Provided by: Silicon Power
Silicon Power was kind enough to send us a 16GB UHS-1 Class 10 SDHC card for review. What makes this card special is its UHS capability, allowing far greater read and write transfer speeds than possible with SD cards lacking this capability. A typical Class 10 rated card has a bus speed of up to 25MB/s, while UHS-1 rated cards have a bus speed of up to 104MB/s.
The vast majority of modern digital cameras use SD cards and with many professional level DSLR cameras now using SD cards, speed is a very important factor, for sports and press photographers, especially those who need to take many photos in rapid succession. As this card has a Class 10 rating, this means that it must sustain a minimum write speed of 10MB/s even in a fragmented state. With a camera that supports UHS, this card claims to deliver up to 45MB/s write speed. So in this review, we will focus our testing on write performance and throughput. This includes tests with a clean card and filled to capacity, with random photos removed to introduce free space fragmentation.
Silicon Power Company Information
Silicon Power is a well known manufacturer of memory products, including USB flash drives, portable hard disks, flash memory cards, computer RAM and Solid State Disks.
The company was founded in 2003 with its headquarters in Taipei, Taiwan and claims, in less than a decade, to be the world's leading manufacturer of flash memory cards, USB flash drives, card readers, DRAM modules, solid state disks, and portable hard drives. Their products are marketed around the world, serving end users in over 100 countries.
Further information on the Silicon Power Company Profile can be found on their website.
The SDHC card was shipped to us in shrink-wrapped retail packaging, as shown in the following images:
What’s inside the packaging?
Actually, there is nothing but the SDHC card inside, held in place by the rigid plastic packaging. No storage case, card holder, or instruction manual was included, so unless one plans on keeping this permanently stored in the camera, we recommend getting an SD case/holder to protect the card.
The QR code at the front brings up a mobile webpage with further information on Silicon Power products and how to enter its competition:
Most users of SD cards don’t give a second thought about the storage density of the cards. As long as the card stores their photos and performs to their expectations, that’s all they care about. It is not until we started looking at the actual card that we realise just how much information is being crammed into this postage stamp sized item. It certainly makes a DVD look physically huge in comparison and it’s worth noting that this is now the lowest capacity SDHC card available from Silicon Power. The capacities range up to 128GB for Silicon Power’s Elite SDXC series, the same capacity as the largest capacity Blu-ray disc available, which is physically still the same clumsy size as a DVD.
If it was not for the high cost of NAND flash, recordable optical media for data storage would likely be history.
The following specifications are sourced from the Silicon Power website:
- Form factor: SDHC (16/32 GB)
- Card dimensions: 24 mm x 32 mm x 2.1 mm
- Operating temperature: 0ºC to 70 ºC
- Storage temperature: -40ºC to 85ºC
- Compatible with SDHC UHS-1 enabled host devices.
- Lifetime Warranty
- Compatible with SDHC enabled host devices; not compatible with SD devices and SD readers.
- Some of the listed capacity on a Flash storage device is used for formatting and other functions and thus is not available for data storage. As such, the actual available capacity for data storage is less than what is listed on the products.
Now let’s head to the next page where we will look at our test PC and testing procedures…