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Over the years, I have used many memory cards from the Sandisk Ultra-series. Their earlier cards (such as
SanDisk Ultra 16GB SDHC SDSDRH-016G-A11
) were called 'class-4'. But later cards in the same series were labeled as 'class-6'. Now this
SanDisk Ultra 32 GB SDHC SDSDU-032G-AFFP
is even marketed as 'class-10'. The cynic in me has to ask: are those the same card being sold at different prices? So I used three different benchmark programs to measure the performance of this Sandisk class-10 card, and compared against my other class-10 SDHC cards of various brands.
First, I used a benchmark program called "H2testw v1.4" to find out the write speed for large (1GB) files. This is essentially the same as the sequential-write speed used for SD card speed ratings. To qualify as a class-10 card, the card must be able to sustain sequential-write speed of 10MB/s.
Here are the Write speeds for all my class-10 SDHC cards: (Note that their Read speeds are all around 18MB/s, which is limited by the card reader I'm using)
-
HP CG790A
: 15.1MB/s
-
Transcend TS16GSDHC10E
: 14.6MB/s
-
PNY P-SDHC16G10
: 13.6MB/s
-
Kingston SD10G2/16GB
: 10.7MB/s
- Sandisk Ultra 32GB class-10 (this product): 10.6MB/s
-
Wintec Filemate 3FMSD32GBC10-R
: 10.2MB/s
As we can see, the Sandisk Ultra ranked near the bottom even though it still qualifies as a class-10. This looks disappointing so far. However, the results from other benchmark programs ("Flash Memory Toolkit v2.0" and "CrystalDiskMark 3.01") were more impressive. The Sandisk Ultra card delivered excellent write speed for both large and small files, while most other cards performed poorly for smaller files (see pictures I uploaded to 'Customer Images' section for details).
Of course, the REAL benchmark needs to be done in the actual application. For that, I inserted each card in my Canon Rebel T1i, set it to save both RAW and JPEG formats, then took 10 consecutive shots in burst mode. The Sandisk Ultra card ranked right in the middle among my class-10 cards in this case. It took 23.8 seconds to save all 250MB of data. For comparison, my fastest card (HP class 10) took just 16.7s to finish, while the slowest class-10 card (Wintec Filemate) took 28.3s.
Bottom Line:
This Sandisk Ultra SDHC card meets the minimum Write speed requirement of 'class-10' card, and it performs equally well for writing large or small files. That means it will work reliably in any appliance that requires a class-10 card. However, it is not the fastest amoung all budget-priced calss-10 SDHC cards I have tested. The HP class-10 card, for example, gives 40% faster write speed for about the same price, so it is a better value.
There is a newer model of this item:
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Compare with similar items
 | SanDisk Ultra 16GB Class 10 SDHC UHS-I Memory Card up to 80MB/s (SDSDUNC-016G-GN6IN) | SanDisk Ultra 16GB Class 10 SDHC Memory Card Up to 80MB/S- SDSDUN-008G-G46 [Newest Version] | Gigastone 8GB 2-Pack SD Card UHS-I U1 Class 10 SDHC Memory Card Full HD Video Canon Nikon Sony Pentax Kodak Olympus Panasonic Digital Camera, with 2 Mini Cases | SanDisk 8GB SDHC Memory Card (RETAIL PACKAGE) Size: 8 GB | SanDisk 8GB SDHC Memory Card (RETAIL PACKAGE) | |
|---|---|---|---|---|---|---|
| Customer Rating | (10117) | (114870) | (3851) | (1257) | (11) | (4344) |
| Price | $20.95 | $7.59 | $11.93 | $12.49 | $19.39 | $34.95 |
| Sold By | Ztron | eTECH | XOXO Mobile | Gigastone America | Memory4You | RS Enterprises |
| Computer Memory Size | 8 GB | 16 GB | 16 GB | 8 GB | 8 GB | 8 GB |
| Digital Storage Capacity | 8 GB | 16 GB | 16 GB | 8.0 GB | 8.0 GB | 8 GB |
| Flash Memory Type | SDHC | SDHC | SDHC | SDHC | SD, SDHC | SDHC |
| Item Dimensions | 0.06 x 1.22 x 0.79 inches | 1.24 x 0.94 x 0.09 inches | 0.85 x 1.26 x 0.93 inches | — | — | 5 x 2.99 x 0.23 inches |
| Item Weight | 0.35 ounces | 0.06 ounces | 0.32 ounces | — | 1.10 lbs | 0.35 ounces |
| Memory Storage Capacity | 8 GB | 16 GB | 16 GB | 8 GB | 8.0 GB | 8 GB |
| Secure Digital Association Speed Class | Class 10 | Class 10 | Class 10 | Class 10 | — | Class 2 |
| Size | 8 GB | 16GB | 16 GB | — | — | 8 GB |
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Reviewed in the United States on September 23, 2012
First, I used a benchmark program called "H2testw v1.4" to find out the write speed for large (1GB) files. This is essentially the same as the sequential-write speed used for SD card speed ratings. To qualify as a class-10 card, the card must be able to sustain sequential-write speed of 10MB/s.
Here are the Write speeds for all my class-10 SDHC cards: (Note that their Read speeds are all around 18MB/s, which is limited by the card reader I'm using)
- [[ASIN:B007X7U224 HP CG790A]] : 15.1MB/s
- [[ASIN:B003VNKNEQ Transcend TS16GSDHC10E]] : 14.6MB/s
- [[ASIN:B004WZJXTS PNY P-SDHC16G10]] : 13.6MB/s
- [[ASIN:B004TS1IG4 Kingston SD10G2/16GB]]: 10.7MB/s
- Sandisk Ultra 32GB class-10 (this product): 10.6MB/s
- [[ASIN:B0046TJAJ8 Wintec Filemate 3FMSD32GBC10-R]]: 10.2MB/s
As we can see, the Sandisk Ultra ranked near the bottom even though it still qualifies as a class-10. This looks disappointing so far. However, the results from other benchmark programs ("Flash Memory Toolkit v2.0" and "CrystalDiskMark 3.01") were more impressive. The Sandisk Ultra card delivered excellent write speed for both large and small files, while most other cards performed poorly for smaller files (see pictures I uploaded to 'Customer Images' section for details).
Of course, the REAL benchmark needs to be done in the actual application. For that, I inserted each card in my Canon Rebel T1i, set it to save both RAW and JPEG formats, then took 10 consecutive shots in burst mode. The Sandisk Ultra card ranked right in the middle among my class-10 cards in this case. It took 23.8 seconds to save all 250MB of data. For comparison, my fastest card (HP class 10) took just 16.7s to finish, while the slowest class-10 card (Wintec Filemate) took 28.3s.
Bottom Line:
This Sandisk Ultra SDHC card meets the minimum Write speed requirement of 'class-10' card, and it performs equally well for writing large or small files. That means it will work reliably in any appliance that requires a class-10 card. However, it is not the fastest amoung all budget-priced calss-10 SDHC cards I have tested. The HP class-10 card, for example, gives 40% faster write speed for about the same price, so it is a better value.
Honest but unexceptional class-10 performance - Good for both large and small files
Reviewed in the United States on September 23, 2012
Over the years, I have used many memory cards from the Sandisk Ultra-series. Their earlier cards (such as [[ASIN:B0012W7HQK SanDisk Ultra 16GB SDHC SDSDRH-016G-A11]]) were called 'class-4'. But later cards in the same series were labeled as 'class-6'. Now this [[ASIN:B007M51J3I SanDisk Ultra 32 GB SDHC SDSDU-032G-AFFP]] is even marketed as 'class-10'. The cynic in me has to ask: are those the same card being sold at different prices? So I used three different benchmark programs to measure the performance of this Sandisk class-10 card, and compared against my other class-10 SDHC cards of various brands.Reviewed in the United States on September 23, 2012
First, I used a benchmark program called "H2testw v1.4" to find out the write speed for large (1GB) files. This is essentially the same as the sequential-write speed used for SD card speed ratings. To qualify as a class-10 card, the card must be able to sustain sequential-write speed of 10MB/s.
Here are the Write speeds for all my class-10 SDHC cards: (Note that their Read speeds are all around 18MB/s, which is limited by the card reader I'm using)
- [[ASIN:B007X7U224 HP CG790A]] : 15.1MB/s
- [[ASIN:B003VNKNEQ Transcend TS16GSDHC10E]] : 14.6MB/s
- [[ASIN:B004WZJXTS PNY P-SDHC16G10]] : 13.6MB/s
- [[ASIN:B004TS1IG4 Kingston SD10G2/16GB]]: 10.7MB/s
- Sandisk Ultra 32GB class-10 (this product): 10.6MB/s
- [[ASIN:B0046TJAJ8 Wintec Filemate 3FMSD32GBC10-R]]: 10.2MB/s
As we can see, the Sandisk Ultra ranked near the bottom even though it still qualifies as a class-10. This looks disappointing so far. However, the results from other benchmark programs ("Flash Memory Toolkit v2.0" and "CrystalDiskMark 3.01") were more impressive. The Sandisk Ultra card delivered excellent write speed for both large and small files, while most other cards performed poorly for smaller files (see pictures I uploaded to 'Customer Images' section for details).
Of course, the REAL benchmark needs to be done in the actual application. For that, I inserted each card in my Canon Rebel T1i, set it to save both RAW and JPEG formats, then took 10 consecutive shots in burst mode. The Sandisk Ultra card ranked right in the middle among my class-10 cards in this case. It took 23.8 seconds to save all 250MB of data. For comparison, my fastest card (HP class 10) took just 16.7s to finish, while the slowest class-10 card (Wintec Filemate) took 28.3s.
Bottom Line:
This Sandisk Ultra SDHC card meets the minimum Write speed requirement of 'class-10' card, and it performs equally well for writing large or small files. That means it will work reliably in any appliance that requires a class-10 card. However, it is not the fastest amoung all budget-priced calss-10 SDHC cards I have tested. The HP class-10 card, for example, gives 40% faster write speed for about the same price, so it is a better value.
Images in this review
Reviewed in the United States on March 11, 2013
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