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TEMPS, SUSTAINED WRITES AND TRUE DATA TESTING
TEMPERATURES
Two characteristics that became very important with the introduction of CFexpress as a mainstream storage medium were temperature and sustained write speeds. We measure temperature by monitoring and updating a Crystal DiskInfo Benchmark while a large 85GB 8K file transfer is being performed. This is the extreme of what one might see in this environment. An important aspect to remember is that the temperature results we obtain are the extreme. They are the hottest the card got during any period of our testing which was constantly monitored. It does not speak to the median or typical temperatures one might expect which would be around the low 30°C mark.
With this in mind, the highest temperature reached with the ProGrade Iridium 4.0 CFExpressB 1.6TB Memory Card was 69°C and there was no throttling of this card any time during our testing.
SUSTAINED WRITE PERFORMANCE
We determine sustained write performance by transferring a 85GB 8K media folder from the PC to the CFexpress Type B card. This test is vital to those looking at digital storage for high end 4K and 8K video recording.
The ProGrade Digital Iridium 4.0 CFExpressB 1.6TB Memory Card held a sustained write speed average of 1650MB/s throughout the transfer which is well above the minimum standard of 400MB/s. This is the top speed in any similar card to date.
REAL WORLD FILE TRANSFER COMPARISON
Our Real World File Transfer Test is conducted through the transfer of data from one spot on the test drive to another to give us the truest of transfer speed results for that device.
The PGD Iridium 4.0 is the runaway winner with respect to data transfer, as can only be expected.
CFEXPRESSB COMPATIBILITY AND PERFORMANCE CHART
REPORT ANALYSIS AND FINAL THOUGHTS
Considering the full spectrum of ProGrade Digital USB 4.0 gear we have examined in the last week, I have a particular liking for this Iridium 4.0. It is in my Canon EOS R5 and I have already experienced the significantly shorter transfer times moving my photos from the camera to PC. It will remain there. The PGD Iridium 4.0, quite honestly, made its way to our offices without my having a clue what I was in for. The speed of this card is simply incredible.
The ProGrade iridium 4.0 CFExpressB Memory Card has plenty of capacities to suit ones need and budget, comes with a 3-year limited warranty and some great software downloads to include Refresh Pro which makes sanitizing ones card to new again quick and easy. Checking Amazon, we can see pricing listed at $199.99 (400GB), $379.99 (800GB) and $739.99 for the 1.6TB version we have in hand today. Editor’s Choice.
CHECK PGD IRIDIUM 4.0 CFEXPRESSB CARD PRICING AT AMAZON
