Lexar Professional 633X 128GB (2-Pack) SDXC UHS-I Cards


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  • High-speed, Class 10 performance—leverages UHS-I technology for a read transfer speed up to 633x (95MB/s)
  • Capture high-quality images and extended lengths of stunning 1080p full-HD, 3D, and 4K video with a DSLR camera, HD camcorder, or 3D camera
  • Enjoy shooting longer without changing cards—large capacity options up to 512GB
  • High-speed file transfer from card to computer to dramatically accelerate workflow
  • Includes downloadable software to recover most photo and select video files
  • 2 cards In a pack



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Lexar Professional 633x SDHC/SDXC UHS-I cards let you quickly capture and transfer high-quality photos and 1080p full-HD, 3D, and 4K video, with a read transfer speed up to 633x (95MB/s). The cards leverage UHS-I technology (U1 or U3, depending on capacity) for high-speed, Class 10 performance. And when using a USB 3.0 card reader, you’ll power through post-production with high-speed card-to-computer file transfer. This dramatically accelerates workflow from start to finish, so you can save time and get back to the business of photography. Cards come with a limited lifetime warranty.

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Collapse all Other Technical Details Brand Name Lexar Series Lexar Professional 633x 128GB (2-pack) SDXC UHS-I/U1 Card (LSD128GCB1NL6332 Item model number LSD128GCB1NL6332 Item Weight 0.56 ounces Product Dimensions 5.5 x 0.21 x 4 inches Item Dimensions L x W x H 5.5 x 0.21 x 4 inches Color Pink

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I bought these because I thought $110 USD was a pretty good deal for 256GB, and after reading the FAQ I saw that it worked with the Black Magic Pocket Cinema Camera....but it really doesn't. It can't shoot RAW at all, but what was even scarier was that my Sandusky Cards say the correct amount of recording time, these were saying 1:24, but I tested both and got 3 hours per card....at Pro Res HQ...so I don't know what was going on, but that's way too scary for me to risk. I shoot Weddings and Corporate videos, where if a card goes bad...I literally could lose thousands. Just too risky for me. Go buy Sandisk cards for $140 from B and H for 2x 128GB!

Oh and also, it says 95mbs yet on the back says like 20mbs write speeds....weird. #Returned

This spends most of its time in my waterproof camera (Nikon AW120). It did a lot of work in Central America last season. I'll also use it in the second slot in the Nikon D500. Not the fastest card, but really, SD is just so slow that I don't seem to really notice the difference. It's just that these cards are ubiquitous and everyone has a reader, unlike XQD.

Solid performing high speed, high capacity cards. I use 2 of these in my Nikon D750, and they have performed flawlessly. Just like another brand that seems to get more hype, but offers no more speed or reliability in my experience. Highly recommended.

one of cards did not have the sliding lock and it would not work

I used the chips for photography and then i put it in storage

I have used these SD cards for a moment and already one of them has lost the locking switch that allows me to write data to the card. What am I supposed to do now? One of the cards is essentially useless already. None of my SD cards I have ever bought have become defective this fast. I'm at a loss.

Works great

Compared to other SD cards I have, these are the slowest, i dont get the advertised speeds on any device I own, averaging around 22mbs read and write?

This product is good. I've used Lexar cards for a while and I am happy with them. For now I haven't had any bad item. The biggest advantage is the price - it was on sale for $92. The format UHS-I is not brand new so I find the combination product / price reasonable. The advantage for speed over 400x is minimal - especially if shooting 1080p or pictures. Did not see speed advantage when shooting RAW on 70D - again comparing to 400x. The size - 128 GB gives plenty of room. Not sure how it would compare for 4k but with such video the size of the card would be the biggest benefit.

I have a mix of 128gb 633x cards and 64gb 1000x or 2000x cards from Lexar, and love them all. They work great with my GH4, and lexar is a great company to deal with with regard to warranty issues and such (haven't had any issues with this card but I did have to replace a 633x MicroSDXC once and they were great!)

Would buy again.

These arrived in less than a day. No wonder they call them ultra high speed.
I like to have more than I need in the way of SDXC cards for traveling. Canon and Nikon superzooms work well with 128GB SDXC, although neither company's bridge cameras handle the even-bigger 256 GB cards (as at 2016-2017). Therefore these seem to be the sweet spot for size and working ability.
As for the 256 SDXC cards, they do work okay in many computers; so that's where mine ended up.

One of the cards I bough burned in my camera. I was filming and I noticed smoke and it was the card. I had to use tools to take it out. I also had to send my camera to be repaired. I use a JVC GY-HM170U. I bough 4 and now I'm afraid to use them.

These SD cards worked really well and have huge capacity! Have been using them for quite a while now and they still work great.

Not the best for speed multiple shooting at sporting events or wildlife at UHS-1, UHS-3 would be better, but for most folks shotting other photos and at this price it is a great choice.

It is very good middle speed SD on the market.The quality is very good. What you need pay attention is to format it first if you use for the camera.I strongly suggest to format in the camera instead of in your laptop,which will work smoothly with your camera later.

Storing mp3 for the car's entertainment. Works has expected.

The quality of the playback of the videos I recorded are fantastic.

Purchased for a Canon 60D, fast memory, another happy customer :)

Con solo una memoria de 128 me fui 2 semanas de viaje y no se llenó, es fantastica! La uso en mi camara Canon6d en modo Raw. Las recomiendo mucho.

it is good

Everything perfect!!


They work with my D800...