Canon EOS 30D Write Speed (Firmware Version 1.0.4)
This page was last updated on July 20, 2006
The data in the table below was derived by timing how long it took the Canon EOS 30D to write out 30 Large Fine JPEG and 11 RAW .CR2 photos to the CompactFlash card. Timing commenced when the camera's card status light illuminated, and stopped when the light went out. Each test cycle was performed 3 times (if the card's capacity allowed for that) to ensure accurate results. All cards were first secure erased, then formatted in the camera, prior to testing. The same test scene was photographed, under the same illumination, for all tests. The identical camera settings and lens were also used for all tests.
The results are arranged from fastest to slowest (based on RAW write speed). The top 10% (based on RAW write speed) are marked in blue.
| Card (identifier)1 | Source of key component(s)2 | CF type (I or II)3 | Write speed - Large Fine JPEG4 | RAW .CR24 |
| SanDisk Extreme IV 2GB | SanDisk | I | 5.858MB/sec | 6.780MB/sec |
| Hoodman PPO 150X-133X 2GB | SMI | I | 5.870MB/sec | 6.770MB/sec |
| ATP Pro Max 1GB (Stamped on back: 4931M2S ACF0601002 E0603B 1GB) | unknown | I | 5.818MB/sec | 6.762MB/sec |
| Ritek/Ridata Pro 150X 2GB (Edge stamp: U610120181E201 8A102GE110100) | SMI | I | 5.831MB/sec | 6.751MB/sec |
| Lexar Pro Series 133X Write Acceleration 2GB (Edge stamp: 39652GBAB5205CDC3) | Lexar | I | 5.793MB/sec | 6.719MB/sec |
| SanDisk Extreme IV 4GB | SanDisk | I | 5.361MB/sec | 6.418MB/sec |
| SanDisk Extreme III 2GB (Edge stamp: BE04121FA) | SanDisk | I | 5.352MB/sec | 6.415MB/sec |
| SanDisk Extreme III 1GB | SanDisk | I | 5.345MB/sec | 6.413MB/sec |
| SanDisk Ultra II 2GB (Edge stamp: BE05015JB) | SanDisk | I | 5.425MB/sec | 6.406MB/sec |
| Lexar Pro Series 133X Write Acceleration 4GB (Edge stamp: 39654GBAB5205CDC3) | Lexar | I | 5.439MB/sec | 6.387MB/sec |
| Transcend 120X 2GB (Edge stamp: 130037 0125 6600 22 2BCP 0604) | Transcend | I | 5.413MB/sec | 6.356MB/sec |
| Hoodman PPO 150X-133X 4GB | SMI | I | 5.367MB/sec | 6.336MB/sec |
| SanDisk Extreme 1GB (Edge stamp: BB0307VZ) | SanDisk | I | 5.503MB/sec | 6.152MB/sec |
| SanDisk Extreme 2GB | SanDisk | I | 5.487MB/sec | 6.137MB/sec |
| SanDisk Extreme III 8GB | SanDisk | I | 4.979MB/sec | 6.035MB/sec |
| SanDisk Extreme III 4GB6 (Edge stamp: BH05032ZB) | SanDisk | I | 4.940MB/sec | 6.028MB/sec |
| Lexar Pro Series 80X Write Acceleration *third edition* 2GB5 (Edge stamp: 39132GBCI29052D97) | Lexar | I | 5.219MB/sec | 5.998MB/sec |
| Lexar Pro Series 80X Write Acceleration *third edition* 1GB5 (Edge stamp: 39121GBDI29052D97) | Lexar | I | 5.241MB/sec | 5.963MB/sec |
| SanDisk Ultra II 4GB6 (Edge stamp: BH04092X) | SanDisk | I | 5.118MB/sec | 5.886MB/sec |
| Transcend 120X 4GB (Edge stamp: 129542 0338 6600 22 4BCP 0603) | Transcend | I | 4.854MB/sec | 5.820MB/sec |
| Ritek/Ridata Pro 150X 8GB (Edge stamp: X610120171E301 8A108GE1101000) | SMI | I | 4.731MB/sec | 5.756MB/sec |
| Lexar Pro Series 80X Write Acceleration *third edition* 4GB5 (Edge stamp: 39134GBCI27052D97) | Lexar | I | 4.981MB/sec | 5.704MB/sec |
| Lexar Pro Series 80X Write Acceleration *first edition* 1GB5 (Edge stamp: 39011GBBI32049D66) | Lexar | I | 4.774MB/sec | 5.654MB/sec |
| Lexar High-Speed 40X Write Acceleration 1GB (Edge stamp: 37841GBAB4604F9A8) | Lexar | I | 4.664MB/sec | 5.564MB/sec |
| ATP Pro Max 4GB (Stamped on back: 8C31M2S ACF0603001 E0613BAS 4GB) | unknown | I | 4.653MB/sec | 5.539MB/sec |
| Lexar Pro Series 133X Write Acceleration 8GB | Lexar | I | 3.542MB/sec | 4.999MB/sec |
| SanDisk Ultra II 8GB (Edge stamp: BI05043BB) | SanDisk | I | 3.015MB/sec | 4.466MB/sec |
| Delkin Devices PRO 1GB (Label: CFX01GP4D0-JLAA000 NPE0239S) | unknown | I | 3.688MB/sec | 4.283MB/sec |
| Delkin Devices PRO 2GB (Label: CFX02GP8Q1-JLAA000 NPE0239S) | unknown | I | 3.583MB/sec | 4.241MB/sec |
| Kingston Elite Pro 2GB (Edge stamp: 4DC02G1MY1-2LA00) | Samsung | I | 3.816MB/sec | 4.211MB/sec |
| ATP 1GB (Edge stamp: 2GC01G1MY1-2LA00) | Samsung | I | 3.876MB/sec | 4.203MB/sec |
| SanDisk "standard" 2GB7 (Edge stamp: BE05014EA) | SanDisk | I | 3.747MB/sec | 4.162MB/sec |
| Transcend 80X 1GB (Edge stamp: 118345 0916 5690 VC 1BCP 0526) | Transcend | I | 3.763MB/sec | 4.105MB/sec |
| Pretec 80X 2GB (Rear label: CFN02G 0516610) | unknown | I | 3.677MB/sec | 4.069MB/sec |
| Ritek/Ridata 80X/PRO. II 2GB (Edge stamp: U41005293222) | KTC | I | 3.645MB/sec | 4.066MB/sec |
| Kingston Elite Pro 1024MB (Edge stamp: THNCF1G02CA) | Toshiba | I | 3.623MB/sec | 4.044MB/sec |
| Kingston Ultimate 100X 4GB (6CBB-4096-0001K 2114923) | M-Systems (500 series) | I | 3.591MB/sec | 3.995MB/sec |
| Corsair 80X 1GB (Edge stamp: 4C13J0748 8QC01G1MY1-2LA00) | Hyperstone | I | 3.687MB/sec | 3.970MB/sec |
| Hitachi Microdrive 4GB10 (Model: HMS360404D5CF00) | Hitachi | II | 3.390MB/sec | 3.902MB/sec |
| Ritek/Ridata 52X/PRO. 2GB (Edge stamp: U3F06116) | unknown | I | 3.393MB/sec | 3.819MB/sec |
| Transcend 45X 1GB (Edge stamp: 098028 0262 4050 63 1BCP 0436) | Transcend | I | 3.383MB/sec | |
| Shikatronics TurboF1 100X 2GB (Edge stamp: CF12ST2G4-G0DD 0552) | unknown | I | 3.342MB/sec | 3.740MB/sec |
| PNY Optima 80X 1GB (Rear label: TNHCF1G/RITEK) | KTC | I | 3.210MB/sec | 3.682MB/sec |
| Kingston Ultimate 100X 2GB (6CBB-2048-0001K 2154874) | M-Systems (500 series) | I | 3.243MB/sec | 3.634MB/sec |
| TwinMOS 140X 2GB (FCF2GBUPS-S W548M5WM2380) | unknown | I | 3.234MB/sec | 3.627MB/sec |
| Delkin Devices PRO 8GB (Label: CFX08GPAQ1-DAAA000 1741495) | Hyperstone | I | 2.899MB/sec | 3.170MB/sec |
| GS Magicstor 2.2GB8 (Model: GS1022C 65) | unknown | II | ---not tested--- | ---not tested--- |
| Hagiwara Z-Pro 2GB11 (Label: THNCF2G04DG(T01CK) 9997879 | Toshiba | I | ---not tested--- | ---not tested--- |
| Hitachi Microdrive 6GB (Model: HMS360606D5CF00) | Hitachi | II | ---not tested--- | ---not tested--- |
| Seagate ST1 5GB9 (Model: ST650211CF) | Seagate | II | ---not tested--- | ---not tested--- |
(2) Many companies sell CompactFlash media; relatively few actually design and manufacture the key internal components, including the controller and flash memory. This column lists the source of the key component or components inside the card, to help you determine if cards with different labels on the front are in fact similar or identical under the hood.
(3) Type I CompactFlash cards are 3.3mm in thickness; Type II, 5.0mm.
(4) K/sec = Kilobytes per second (1 kilobyte = 1024 bytes); MB/sec = Megabytes per second (1 megabyte = 1024 kilobytes).
(5) Lexar began shipping their 80X line of cards in June 2004. The card marked first edition is representative of the 80X lineup that began shipping at that time. In October 2004, Lexar began to ship a revised version of their 80X cards with improved performance; we've dubbed this 80X variant second edition. If the last four characters of the edge stamp on the card are A4B6 or 9171, it's a second edition 80X CompactFlash card. To solve an incompatibility with 80X second edition cards and certain Canon cameras, Lexar updated the controller in its 80X line in June 2005. These revised-controller 80X cards we've dubbed third edition and, as of this writing, the last four characters of the edge stamp of this 80X version are 2D97. In our testing, 80X second edition and 80X third edition cards offer nearly identical read and write speeds; we've only included results for third edition models here (in addition to one first edition Lexar 80X card).
(6) This card includes a switch that enables it to operate as either a 2GB or 4GB card, for compatibility with older cameras that are unable to recognize cards over 2GB. Throughput has been tested with the card's switch set to the 4GB position. See the next note for more information on this card.
(7) SanDisk's blue-label line of CompactFlash has been made considerably faster over time, though the speed improvements have been introduced as rolling changes in the product without any alteration of the card's description on the retail packaging. As such, the SanDisk "standard" card tested is representative of a minimum level of performance from this line of cards, but may not represent the actual performance in some cases of a blue-label card you might buy in the future.
(8) We opted to suspend testing of the GS Magicstor 2.2GB after experiencing ongoing erratic behaviour, with two different cards, in several cameras and CompactFlash readers (and especially the readers).
(9) Midway through testing, this card was accidentally dropped from a height of no more than 2 inches onto a wooden desk. The drop was fatal.
(10) This is the original version of the 4GB Microdrive; in the spring of 2005, Hitachi introduced a new version of this card that should perform similarly to the 6GB Microdrive.
(11) This card was unavailable at testing time.
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