Sandisk

SanDisk Extreme III 4 GB CompactFlash Memory Card SDCFX3-004G-A31

Name: SanDisk Extreme III 4 GB CompactFlash Memory Card SDCFX3-004G-A31
Brand: Sandisk
SKU: B0008D76L0

Status: SanDisk Extreme III 4 GB CompactFlash Memory…: Unavailable on Amazon as of 2026-10-06 22:18 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The SanDisk Extreme III 4 GB CompactFlash Memory Card SDCFX3-004G-A31: 30 MB/s read/write keeps burst shooting flowing on older DSLRs; main trade-off: 4 GB fills fast if you shoot RAW or any video.

Unavailable on Amazon as of 2026-10-06 22:18 UTC

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By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-06

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. About the author →

Pros & Cons

Pros

✓ 30 MB/s read/write keeps burst shooting flowing on older DSLRs
✓ Lifetime warranty from SanDisk on the SDCFX3-004G-A31
✓ Rated for -13F to 185F, so cold and hot shoots are covered
✓ 4 GB size fits vintage cameras that reject high-capacity CF cards

Cons

✗ 4 GB fills fast if you shoot RAW or any video
✗ 30 MB/s trails modern UDMA 7 CompactFlash by a wide margin
✗ Extreme III is a discontinued line, so stock is mostly old inventory
✗ No listed UDMA mode rating, so transfer speed depends on your reader

Manufacturer description

4 GB capacity Lifetime warranty 30 MB/s Read/write speed

SpecPicks Verdict

SpecPicks scored SanDisk Extreme III 4 GB CompactFlash Memory Card SDCFX3-004G-A31 using a rating × review-volume × price-fit model applied to published specs and reviews across the PC & gaming hardware category. Sandisk's PC & gaming hardware lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for PC & gaming hardware of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

4 GB capacity
Lifetime warranty
30 MB/s Read/write speed
Temperature tested -13 to 185 degrees F.

Full Specifications

Brand	Sandisk
Color	black-6
Model	SDCFX3-004G-A31
Warranty	Lifetime warranty
UnitCount	1
Manufacturer	SanDisk
ItemPartNumber	SDCFX3-004G-A31

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SanDisk Extreme III 4 GB CompactFlash Memory Card SDCFX3-004G-A31 is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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