Customer reviews from Lexar International
Lexar - 640GB Professional GOLD CFexpress 4.0 Type A Memory Card
Average customer rating
5
(81 Reviews)
Rating breakdown 81 reviews
5 Stars
77
4 Stars
4
3 Stars
0
2 Stars
0
1 Star
0
Customer Reviews for Lexar - 640GB Professional GOLD CFexpress 4.0 Type A Memory Card
Customer Rating
5
Small card, big performance
on May 8, 2026
Posted by: OlenaK
[This review was collected as part of a promotion.] I've been using the 256GB Lexar CFexpress Type A Gold 4.0 card in my Sony A7S III camera for video recording for several weeks now, and it has performed absolutely flawlessly-no glitches. whatsoever, even during long 4K recording sessions. The buffer clears incredibly fast, even in burst mode, so I never miss critical shots of fast-paced action. Transferring files to my laptop now takes half as much time as it used to-it's an absolute lifesaver after long, grueling shoot days.
Written by a customer while visiting Lexar International
Customer Rating
5
Space
on May 5, 2026
Posted by: DeysiS
[This review was collected as part of a promotion.] I haven’t used this memory card. But I’m really excited since i need space for the pictures and my camera so hopefully this helps me safe and get more space
Written by a customer while visiting Lexar International
Customer Rating
5
Performs beautifully
on May 5, 2026
Posted by: IggyP
[This review was collected as part of a promotion.] This performs like a high quality, durable card. I like that it doesn't warm up or lag. The transfer speed is amazing, even with video. It's also very reliable when it comes to performance and image & video quality. The high storage capacity is a game changer and perfect for professional photographers. I always like to carry a main and spare card with me, this one is definitely worthy of being the main.
Written by a customer while visiting Lexar International
Customer Rating
5
Excellent value and very fast
on May 4, 2026
Posted by: HaoJ
[This review was collected as part of a promotion.] Lexar offers incredible value with this card. The read speeds are exceptionally fast—I use it with my Sony A7M4 for continuous RAW bursts, and it handles the buffer perfectly without any lag. It also handles long-form 4K video recording effortlessly. It does tends to get a bit warm during extended use. Overall, it’s a reliable, high-performance card that I highly recommend.
Written by a customer while visiting Lexar International
Customer Rating
5
love it
on May 4, 2026
Posted by: SuongT
[This review was collected as part of a promotion.] i received this product from @Influenster and @Lexar for free exchange my honest review. this brand is very famous for its quality, however the storage capacity is a bit smal for usable purposes. but i still love it
Written by a customer while visiting Lexar International
Customer Rating
5
so much storage!!
on May 4, 2026
Posted by: MirandaL
[This review was collected as part of a promotion.] this storage is INSANE! it can fit 256gb of storage for such an affordable price! its also durable and not easy to break compared to other sd cards. i like how the card does not heat up as well! if you need an sd card, be sure to check this out!
Written by a customer while visiting Lexar International
Customer Rating
5
Lightweight, incredibly fast, and perfect for impr
on May 4, 2026
Posted by: ThiD
[This review was collected as part of a promotion.] A lightweight yet powerful memory card. The performance is consistent, and it handles large file transfers wish ease. It is significantly faster than previous generations
Written by a customer while visiting Lexar International
Customer Rating
5
Fas, Reliable Cfexpress Type A for 4k/8k workflows
on May 4, 2026
Posted by: LuisH
[This review was collected as part of a promotion.] I have been using this Lexar Cfexpress Type A (256GB) and the performance have been excellent. It handles high bitrate video and burst shooting without any dropped frames or buffering. Write speed are consistent, which makes a big difference for workflows.
The build quality feels solid and the included case it's a plus and a nice to have. It's definitely a premium card, if your camera supports Cfexpress Type A, then, the speed and reliability of this card worth it.
Written by a customer while visiting Lexar International