OWC Atlas Pro vs ProGrade Gold CFexpress Type B 512GB
Two CFexpress Type B cards at 512GB, compared on rated speed, current price and price history.
OWC 512GB Atlas Pro CFexpress 4.0 Type B Memory Card
ProGrade Digital 512GB CFexpress 4.0 Type B Gold Memory Card
The short version
- Read speed: OWC is rated 7% higher (3650 vs 3400 MB/s).
- Write speed: both are rated at 3000 MB/s.
- Sustained write: ProGrade is rated 6% higher (850 vs 800 MB/s).
- Price: both currently cost $399.99.
Speeds are manufacturer ratings from the retailer listing, not our own tests. Prices come from retailer listings we checked in the last 48 hours; Amazon prices are not shown.
Specifications
- Brand
- OWC
- ProGrade
- Format
- CFexpress Type B
- CFexpress Type B
- Capacity
- 512GB
- 512GB
- Read Speed
- 3650 MB/s
- 3400 MB/s
- Write Speed
- 3000 MB/s
- 3000 MB/s
- Sustained Write
- 800 MB/s
- 850 MB/s
- VPG Rating
- 400
- 400
- CFexpress Version
- 4.0
- 2.0
Pick OWC if…
- You want the higher rated read speed.
Pick ProGrade if…
- You want the higher rated sustained write.
Card A: current prices
Prices retrieved: Nov 15, 2026, 7:13 AM
Card B: current prices
Prices retrieved: Nov 15, 2026, 7:13 AM
Card A: OWC
Is this a good price?
This price has not moved in the 89 days we have tracked it.
Based on 95 price checks at B&H Photo over 89 days. Amazon prices are not included.
Card B: ProGrade
Is this a good price?
Today's price is about average for the last 89 days, where it has ranged $279.99–$499.99.
Based on 129 price checks at B&H Photo over 89 days. Amazon prices are not included.
Card A: price history
Card B: price history
Want a different pair? Change either card in the comparison tool.