SanDisk
SanDisk SDCFXS-064G-X46 Extreme 64GB Compact Flash Memory Card
120MB/s reads and VPG-20 certification make this 64GB CF card the last bottleneck you'll remove from a professional burst workflow.
$84.85*
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*Price sourced from Amazon.com. Last updated:Sep 05, 2026.Price and availability are subject to change — details.
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Overview
Key Features
Fast transfer speeds up to 120MB/s(read) for increased workflow efficiency
Fast shot speeds up to 60MB/S (write) for faster continuous burst shooting
Video Performance Guarantee (VPG-20) performance for Full HD video
Tested for durability in extreme conditions
Sealed with RTV silicone for added protection against shock and vibration
Shoot like a Pro with the most trusted flash memory brand worldwide
Specifications
Capacity
64GB
Read Speed
Up to 120MB/s
Write Speed
Up to 60MB/s
Interface
CompactFlash (UDMA 7)
Video Performance Guarantee
VPG-20 (Full HD)
Protection
RTV silicone sealed (shock & vibration)
Flash Memory Type
CompactFlash
Color
Black
Frequently Asked Questions
Will this card work in cameras that use the older UDMA 6 standard, or does it require UDMA 7?
The SanDisk Extreme CF SDCFXS-064G-X46 is rated for UDMA 7 operation at 120MB/s read. It is backward compatible with UDMA 6 and earlier interfaces, but you will be limited to the maximum speed your camera's CF controller supports — typically 90–100MB/s on UDMA 6 bodies.
What does VPG-20 mean in practice for video recording?
VPG-20 (Video Performance Guarantee 20) is a minimum sustained write speed standard of 20MB/s. It guarantees the card will not drop below that threshold during continuous recording, preventing dropped frames during Full HD video capture. It does not certify 4K recording performance.
The write speed is listed at 60MB/s — how does that affect continuous burst shooting?
At 60MB/s write, the card can sustain throughput for cameras generating RAW files in the 25–45MB range at roughly 1.5–2.4 frames per second to card continuously. Burst performance is ultimately governed by the camera's internal buffer depth; this card clears that buffer faster than slower CF cards rated at 40MB/s write or below.
Is the RTV silicone sealing the same as weather sealing for use in harsh conditions?
The RTV silicone seal on this card protects the internal PCB against shock and vibration transfer — it is a structural protection measure, not a waterproofing or ingress protection rating. SanDisk tests this card for durability in extreme temperature and physical stress conditions, but it is not rated for submersion or direct water exposure.
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