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 Introduction
   ATP ProMax II (4GB)
   Lexar Professional UDMA (2GB)
   Sandisk Extreme IV (2GB)
   Transcend 266X (2GB)
   TwinMOS Ultra-X 300X (2GB)
 Conclusion

TwinMOS Ultra-X 300X (2 GB)

   Website manufacturer: TwinMOS
   Model: Ultra-X 300X
   Capacity: 2 GB (1943 MiB)
   Speed rating: 300X (45 MB/s)
   Warranty: lifetime

Performance

Addonics IDE to CF adapter

Average read speed: 25.9 MB/s (177X)
Average write speed: 19.6 MB/s (133X)



Hama Traveldrive CF

Average read speed: 25.4 MB/s (173X)
Average write speed: 19.5 MB/s (133X)



Canon XTi/400D

Files per minute (Jpeg+RAW): 57

Conclusion

Well, there's not much to say about this card. The results speak from themselves. Just like the Ultra-X 150X we tested earlier, this TwinMOS card doesn't even come close to its rated speed.
The read speed is almost two times slower than the Transcend 266X. It writes a bit faster than the Transcend but compared to the other cards it's painfully slow.
The TwinMOS Ultra-X 300X is actually not much faster than a regular 150X non-UDMA card.

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