Camera Memory Speed
Memory Card Comparison & Performance Tests for Digital Cameras
Panasonic GH4 with dual SD card slots with SanDisk Extreme Pro 300MB/s UHS-II UHS-II memory cards and door open

Panasonic GH5 Fastest SD Card Comparison

Published: May 30, 2017

The Panasonic GH5 is an advanced, feature-filled interchangeable lens mirrorless digital camera. Incorporating a 20.3MP sensor with in-body stabilization the camera is suited to both still photography and video. It can record 4K video at 60 fps and HD video up to 180 fps. For still photographers it offers up to 12fps continuous shooting at full resolution. The GH5 has dual SD card slots and both slots support the UHS-II interface. Standard SD and UHS-I cards can be used but UHS-II cards offer the best performance.

A total of 119 memory cards were tested in the GH5. The cards tested include both UHS-I and UHS-II. The results are presented in two tables. The first shows the average write speed during continuous shooting of RAW images and the second table shows the number of shots during continuous shooting for 30 seconds using in three images modes (RAW+JPEG, RAW and JPEG modes). An analysis follows with more details observed during the tests. The fastest SD cards for the Panasonic GH5 are provided based on the test results for this camera.

Camera Details and Settings

The test is conducted with the GH5 mounted on a tripod. The shutter is operated using a remote release timer. The camera settings are chosen to reduce all internal processing of the images and all manual settings are used to assure consistency. An adapted manual lens is attached to the camera and focus and aperture are set on the lens. The test image is of a detailed scene with controlled lighting that remains constant throughout the test. Write speed is calculated during the buffer-full write condition during extended continuous shooting. The amount of data written to the card in bytes divided by the write time in seconds gives the write speed in MB/s (1 MB = 1,048,576 bytes). Results for write speed are for RAW images because they provide a higher write speed than RAW+JPEG and JPEG modes.

Panasonic GH5 SD Card Write Speed

+ Show more prices
Memory CardSize
(GB)
Average Write Speed (MB/s)Price
Sony SF-G 300MB/s UHS-II 64GB6491.9$119.98
Sony SF-G 300MB/s UHS-II 128GB12891.8$229.99
Lexar Professional 2000x UHS-II Rev E 64GB6491.1$80.65
Hoodman Steel UHS-II 64GB6490.8$99.99
Transcend Ultimate UHS-II U3 64GB6490.5$101.99
Lexar Professional 2000x UHS-II Rev B 128GB12890.5$188.30
Lexar Professional 1800x microSD UHS-II 64GB6490.3$124.95
SanDisk Extreme Pro 300MB/s UHS-II 64GB6486.7$119.95
Sony SF-G 300MB/s UHS-II 32GB3286.5$65.97
Lexar Professional 2000x UHS-II Rev E 32GB3286.2$49.99
SanDisk Extreme Pro 300MB/s UHS-II 128GB12885.9$249.99
Transcend Ultimate UHS-II U3 32GB3284.5$52.99
Lexar Professional 1800x microSD UHS-II 32GB3279.2$52.25
SanDisk Extreme Pro 300MB/s UHS-II 32GB3277.4$59.95
Toshiba Exceria Pro UHS-II 32GB3275.1$55.00
Sony M Series UHS-II 32GB3274.5$28.51
SanDisk Extreme Pro 280MB/s UHS-II 32GB3274.2$95.00
Sony M Series UHS-II 128GB12873.3$99.99
Sony M Series UHS-II 64GB6473.3$55.99
SanDisk Extreme Pro UHS-II 275MB/s microSDXC 64GB6472.0$99.99
Lexar Professional 1800x microSD UHS-II 128GB12866.8$159.99
Lexar Professional 1000x UHS-II Rev C 128GB12859.9$83.95
Lexar Professional 1000x UHS-II Rev B 32GB3255.9$23.26
Lexar Professional 1000x UHS-II Rev C 64GB6454.9$41.33
Lexar Professional 1000x UHS-II microSD 128GB12847.4$122.25
Lexar Professional 1000x UHS-II microSD 64GB6442.0$50.59
SanDisk Extreme Pro 95MB/s U3 V30 256GB25640.0$129.50
SanDisk Extreme Pro 95MB/s U3 V30 64GB6439.6$34.94
SanDisk Extreme 90MB/s U3 V30 256GB25639.5$116.95
Lexar Professional 2000x UHS-II 64GB6439.3$80.65
SanDisk Extreme Pro 95MB/s U3 V30 128GB12838.8$64.95
SanDisk Extreme Plus 95/90 MB/s U3 V30 microSDXC 128GB12838.8$89.99
SanDisk Extreme 90MB/s U3 V30 microSDXC 128GB12838.6$69.99
SanDisk Extreme 90MB/s U3 V30 128GB12838.6$59.95
SanDisk Extreme Plus 90MB/s U3 V30 64GB6438.5$44.99
Samsung PRO U3 64GB6438.5$62.90
SanDisk Extreme 90MB/s U3 V30 64GB6438.4$28.89
Lexar Professional 1000x microSD UHS-II 32GB3238.3$24.95
SanDisk Extreme 90MB/s U3 V30 microSDXC 64GB6438.3$29.95
SanDisk Extreme Plus 95/90 MB/s U3 V30 microSDXC 64GB6438.3$44.99
Samsung PRO Plus microSDXC 64GB6438.3$52.99
Samsung PRO Select microSDXC 64GB6438.3$49.99
Samsung PRO Plus 64GB6438.2$54.99
Samsung PRO microSDXC 64GB6438.2$69.99
Transcend R95 W85 U3 64GB6438.1$60.99
SanDisk Extreme Pro 95MB/s microSDXC 64GB6438.1$52.90
Lexar Professional 1000x UHS-II 128GB12838.0$83.95
PNY Pro Elite microSDXC 64GB6437.9$37.99
Patriot EP PRO microSDXC 64GB6437.9$32.99
Lexar Professional 633x U3 256GB25637.9$109.95
Panasonic Gold 95/90 64GB6437.9$94.99
Patriot EP Series microSDXC 64GB6437.9$31.99
Kingston U3 (90/80) microSD 64GB6437.9$39.95
Lexar Professional 1000x UHS-II 64GB6437.8$41.33
Kingston U3 90/80 MB/s 64GB6437.7$34.95
Transcend 95/60 MB/s U3 64GB6437.7$40.99
PNY Elite Performance U1 64GB6437.6$39.99
PNY Elite Performance U3 128GB12837.5$64.99
PNY Pro Elite 64GB6437.5$92.80
Samsung PRO Plus microSDXC 128GB12837.5$110.95
Samsung PRO Select microSDXC 128GB12837.5$590.00
Transcend 95/60 MB/s U3 128GB12837.3$85.99
Transcend 600x 64GB6437.1$39.97
PNY Elite-X microSDXC 64GB6437.0$34.99
SanDisk Extreme Pro 95MB/s U3 V30 32GB3236.8$20.97
Sony 95MB/s U3 64GB6436.8$47.79
SanDisk Extreme Plus 95/90 MB/s U3 V30 microSDHC 32GB3236.7$29.95
Kingston Class 10 UHS-I 64GB6436.7$30.95
Delkin 1900x UHS-II 32GB3236.6$26.95
Transcend 600x 128GB12836.6$81.99
SanDisk Extreme Plus 90MB/s U3 V30 32GB3236.5$29.95
Samsung PRO Plus 32GB3236.5$26.75
Samsung PRO U3 32GB3236.4$14.95
Lexar Professional 2000x UHS-II 32GB3236.3$49.99
SanDisk Extreme 90MB/s U3 V30 microSDHC 32GB3236.3$18.95
SanDisk Extreme Pro 95MB/s microSDHC 32GB3236.3$30.98
Lexar Professional 1000x UHS-II 32GB3236.2$23.26
SanDisk Extreme 90MB/s U3 V30 32GB3236.1$18.95
PNY Elite Performance U3 256GB25635.8$129.00
Transcend Ultimate 633x microSD 64GB6435.8$64.49
Transcend 95/85 MB/s U3 32GB3235.8$29.99
Kingston U3 (90/80) microSD 32GB3235.6$18.95
Delkin Black 32GB3235.6$9223372036854775808.00
Delkin Elite 633x 32GB3235.6$28.95
Kingston U3 90/80 MB/s 32GB3235.5$21.95
PNY Elite-X microSDHC 32GB3235.5$17.99
Transcend 95/60 MB/s U3 256GB25634.9$187.99
Patriot EP Pro 90MB/s 32GB3234.8$54.99
Transcend 633x microSDHC 32GB3234.8$28.99
Sony 95MB/s U3 32GB3234.7$29.99
Panasonic MicroP2 UHS-II 32GB3234.6$189.99
Kingston Ultimate 32GB3234.4$18.95
Patriot EP Pro 128GB12831.4$59.99
Patriot EP Pro 90MB/s 64GB6429.7$34.99
Lexar Professional 633x microSDXC 200GB20028.0$103.98
Transcend 600x 32GB3227.5$20.99
PNY Elite Performance U1 32GB3227.2$22.99
SanDisk Ultra 80MB/s microSD 128GB12826.8$40.80
PNY Elite microSDXC 64GB6426.4$26.49
Lexar Professional 1000x UHS-II 256GB25625.9$167.30
SanDisk Ultra 80MB/s 32GB3225.8$12.95
Samsung EVO Select microSDXC 256GB25624.9$187.66
Lexar Professional 633x U1 64GB6422.4$26.00
Lexar Professional 633x microSDXC 64GB6422.0$27.95
PNY Elite microSDXC 128GB12821.6$59.99
Lexar Professional 633x U1 128GB12821.3$53.76
Samsung EVO microSDXC 64GB6419.2$24.99
Lexar Professional 633x U1 32GB3218.7$15.99
Samsung EVO Select microSDXC 64GB6418.2$39.99
Samsung EVO microSD 32GB3217.9$12.99
SanDisk Ultra 80MB/s 128GB12817.4$44.26
Samsung EVO Select microSDXC 128GB12817.3$79.99
Lexar Professional 633x microSDXC 128GB12817.2$54.94
Samsung EVO Plus 128GB microSDXC12817.2$57.19
SanDisk Ultra 80MB/s microSD 64GB6416.0$22.45
SanDisk Ultra 80MB/s 32GB Card 23215.8$12.95
SanDisk Ultra 90MB/s microSD 200GB20015.1$74.85
SanDisk Ultra 80MB/s 64GB6413.0$24.85
SanDisk Ultra 80MB/s microSD 32GB3213.0$12.99

Panasonic GH5 Continuous Shooting

The second table shows a comparison of the number of shots that can be taken in 30 seconds. This time does not include the buffer clearing and is limited by the write speed of the cards. The release mode is continuous high and uses the maximum frame rate provided by the GH5. The image modes tested are RAW+JPEG, RAW and JPEG. The JPEG setting is large, quality priority. The test scene produced 23.1 MB RAW files and 7.9 MB JPEG files.

+ Show more prices
Memory CardSize
(GB)
Continuous Shooting – Images in 30 SecondsLowest
Price
RAW+JPEGRAWJPEG
Sony SF-G 300MB/s UHS-II 64GB64119163314$119.98
Sony SF-G 300MB/s UHS-II 128GB128119163303$229.99
Hoodman Steel UHS-II 64GB64119163291$99.99
Lexar Professional 2000x UHS-II Rev B 128GB128117163294$188.30
Lexar Professional 1800x microSD UHS-II 64GB64117161289$124.95
Transcend Ultimate UHS-II U3 64GB64116163293$101.99
SanDisk Extreme Pro 300MB/s UHS-II 64GB64112159266$119.95
SanDisk Extreme Pro 300MB/s UHS-II 128GB128112158264$249.99
Sony SF-G 300MB/s UHS-II 32GB32112157310$65.97
Lexar Professional 2000x UHS-II Rev E 32GB32112156297$49.99
Lexar Professional 2000x UHS-II Rev E 64GB64111163290$80.65
Transcend Ultimate UHS-II U3 32GB32111158293$52.99
Lexar Professional 1800x microSD UHS-II 32GB32111151278$52.25
Toshiba Exceria Pro UHS-II 32GB32111148288$55.00
SanDisk Extreme Pro 300MB/s UHS-II 32GB32109147259$59.95
SanDisk Extreme Pro 280MB/s UHS-II 32GB32109145254$95.00
Sony M Series UHS-II 128GB128109143239$99.99
Sony M Series UHS-II 64GB64109143221$55.99
Sony M Series UHS-II 32GB32107144262$28.51
Lexar Professional 1800x microSD UHS-II 128GB128107135224$159.99
SanDisk Extreme Pro UHS-II 275MB/s microSDXC 64GB64106142222$99.99
Lexar Professional 1000x UHS-II Rev C 128GB128105131234$83.95
Lexar Professional 1000x UHS-II Rev B 32GB32102121225$23.26
Lexar Professional 1000x UHS-II Rev C 64GB64101125206$41.33
Lexar Professional 1000x UHS-II microSD 128GB12895115198$122.25
SanDisk Extreme Pro 95MB/s U3 V30 256GB25695111214$129.50
SanDisk Extreme 90MB/s U3 V30 256GB25695111210$116.95
SanDisk Extreme Pro 95MB/s U3 V30 128GB12895110206$64.95
Samsung PRO Plus microSDXC 64GB6495109206$52.99
Samsung PRO U3 64GB6495108209$62.90
Samsung PRO microSDXC 64GB6495107207$69.99
Samsung PRO Select microSDXC 64GB6494109209$49.99
Lexar Professional 2000x UHS-II 64GB6494109204$80.65
SanDisk Extreme Pro 95MB/s U3 V30 64GB6494108209$34.94
SanDisk Extreme Plus 95/90 MB/s U3 V30 microSDXC 128GB12893109209$89.99
SanDisk Extreme Plus 95/90 MB/s U3 V30 microSDXC 64GB6493109201$44.99
Samsung PRO Plus 64GB6493108208$54.99
SanDisk Extreme Plus 90MB/s U3 V30 64GB6493108207$44.99
SanDisk Extreme 90MB/s U3 V30 128GB12893108204$59.95
SanDisk Extreme 90MB/s U3 V30 microSDXC 128GB12893108204$69.99
Samsung PRO Select microSDXC 128GB12893108200$590.00
Sony 95MB/s U3 64GB6493108200$47.79
Kingston Class 10 UHS-I 64GB6493108198$30.95
SanDisk Extreme 90MB/s U3 V30 64GB6493107208$28.89
SanDisk Extreme 90MB/s U3 V30 microSDXC 64GB6493107207$29.95
Kingston U3 90/80 MB/s 64GB6493107197$34.95
Kingston U3 (90/80) microSD 64GB6493107188$39.95
Samsung PRO Plus microSDXC 128GB12892108200$110.95
PNY Pro Elite 64GB6492108196$92.80
PNY Pro Elite microSDXC 64GB6492108195$37.99
Patriot EP PRO microSDXC 64GB6492107200$32.99
Patriot EP Series microSDXC 64GB6492107198$31.99
Lexar Professional 1000x UHS-II 128GB12891109191$83.95
SanDisk Extreme Pro 95MB/s U3 V30 32GB3291108205$20.97
SanDisk Extreme Plus 95/90 MB/s U3 V30 microSDHC 32GB3291107206$29.95
SanDisk Extreme 90MB/s U3 V30 32GB3291107205$18.95
SanDisk Extreme Plus 90MB/s U3 V30 32GB3291107204$29.95
SanDisk Extreme 90MB/s U3 V30 microSDHC 32GB3291107203$18.95
PNY Elite-X microSDXC 64GB6491107197$34.99
Samsung PRO U3 32GB3291106208$14.95
Samsung PRO Plus 32GB3291106208$26.75
Kingston U3 90/80 MB/s 32GB3291106188$21.95
Lexar Professional 1000x UHS-II 64GB6491106184$41.33
Delkin 1900x UHS-II 32GB3291106181$26.95
Delkin Black 32GB3291102189$9223372036854775808.00
Lexar Professional 1000x UHS-II 32GB3290108190$23.26
Lexar Professional 2000x UHS-II 32GB3290107206$49.99
Panasonic Gold 95/90 64GB6490107195$94.99
Sony 95MB/s U3 32GB3290105195$29.99
SanDisk Extreme Pro 95MB/s microSDXC 64GB6489108202$52.90
Transcend 600x 64GB6489108194$39.97
PNY Elite Performance U3 256GB25689107194$129.00
Transcend 95/85 MB/s U3 32GB3289106202$29.99
Transcend 95/60 MB/s U3 256GB25689106201$187.99
Kingston U3 (90/80) microSD 32GB3289106191$18.95
SanDisk Extreme Pro 95MB/s microSDHC 32GB3289105200$30.98
Kingston Ultimate 32GB3289105188$18.95
Patriot EP Pro 90MB/s 32GB3289102188$54.99
Samsung EVO Select microSDXC 256GB2568994158$187.66
Lexar Professional 1000x UHS-II 256GB2568992191$167.30
Transcend 600x 128GB12888107195$81.99
Delkin Elite 633x 32GB3288106182$28.95
Lexar Professional 633x U3 256GB25687109205$109.95
PNY Elite Performance U1 64GB6487109202$39.99
Transcend 95/60 MB/s U3 64GB6487106201$40.99
Transcend Ultimate 633x microSD 64GB6487106184$64.49
Panasonic MicroP2 UHS-II 32GB3287104187$189.99
PNY Elite-X microSDHC 32GB3285106202$17.99
Transcend 633x microSDHC 32GB3285105189$28.99
PNY Elite Performance U1 32GB328596177$22.99
SanDisk Ultra 80MB/s 32GB328594173$12.95
Samsung EVO Select microSDXC 64GB648585143$39.99
Transcend 95/60 MB/s U3 128GB12883108199$85.99
Lexar Professional 1000x microSD UHS-II 32GB3281108190$24.95
Samsung EVO microSDXC 64GB648185140$24.99
Lexar Professional 1000x UHS-II microSD 64GB6480111201$50.59
Lexar Professional 633x microSDXC 64GB648090164$27.95
Lexar Professional 633x U1 128GB1288088156$53.76
Lexar Professional 633x U1 64GB647990165$26.00
SanDisk Ultra 80MB/s 64GB647978141$24.85
PNY Elite microSDXC 64GB647795176$26.49
Lexar Professional 633x U1 32GB327786155$15.99
Samsung EVO microSD 32GB327784155$12.99
PNY Elite Performance U3 128GB12875108202$64.99
Transcend R95 W85 U3 64GB6475107204$60.99
SanDisk Ultra 80MB/s 128GB1287584149$44.26
PNY Elite microSDXC 128GB1287488156$59.99
SanDisk Ultra 90MB/s microSD 200GB2007382139$74.85
SanDisk Ultra 80MB/s microSD 32GB327378134$12.99
Patriot EP Pro 128GB1287299181$59.99
Transcend 600x 32GB327195181$20.99
SanDisk Ultra 80MB/s microSD 64GB647183149$22.45
Patriot EP Pro 90MB/s 64GB646997183$34.99
SanDisk Ultra 80MB/s microSD 128GB1286996177$40.80
Lexar Professional 633x microSDXC 128GB1286984144$54.94
SanDisk Ultra 80MB/s 32GB Card 2326983146$12.95
Samsung EVO Plus 128GB microSDXC1286983143$57.19
Lexar Professional 633x microSDXC 200GB2006895165$103.98
Samsung EVO Select microSDXC 128GB1286782144$79.99

Performance Analysis

The Panasonic GH5 offers the best performance when using UHS-II cards. Write speeds averaged up to 91.9MB/s using UHS-II cards. UHS-I cards only reached up to 40MB/s average during continuous shooting. The GH5 does not support the faster UHS-I SDR104 mode, so even UHS-II cards with moderate write speeds such as the Lexar 1000x and Sony M Series offer better performance than the fastest UHS-I cards in the GH5.

The GH5 has a large buffer and captured between 64 to 72 shots at full frame rate in RAW mode. Cards with higher write speed allow more shots because they clear the buffer faster during shooting. Once the buffer reaches capacity the camera prevents further shots until there is enough room in the buffer to continue shooting. With the camera buffer full, shooting was limited to between 0.6 fps using the slowest card and 4fps with the fastest card. These numbers will change with a different image subjects and camera settings. The detailed test scene in this test produced relatively large files. When shooting less detailed subjects the number of shots at full frame rate and frame rate with the buffer full will increase.

When shooting RAW+JPEG the GH5 could shoot between 63 shots at full frame rate with slow cards up to 67 shots with faster cards. The difference between cards was most apparent with the buffer full, where the slowest card only shot 4 additional shots in 24 seconds, or under 0.2 fps. Faster cards shot up to 52 shots with the buffer full during the same time, just over 4 fps.

Fast memory cards allow practically unlimited continuous shooting at full frame rate in JPG mode. The detailed test scene resulted in 242 shots at full frame rate with the fastest card and only slowed slightly for the remainder. A less detailed image could allow unlimited shooting. The slowest card tested captured 107 shots at full frame rate before slowing to 1.4 fps in JPEG mode.

In general, 64GB and larger SDXC cards performed slightly faster than 32GB SDHC versions of the same card in the GH5.

Issue with Some UHS-II Cards

Some UHS-II cards operated in UHS-I mode in the GH5. Older Lexar Professional 1000x and 2000x UHS-II cards with production dates of 12/2015 or earlier were apparently operating in UHS-I mode. This is most likely due to a controller issue in the GH5 and these cards are probably forced into UHS-I mode by the firmware in the GH5. The affected cards function normally in every other camera and card reader test performed to date. Since the GH5 also doesn't support SDR104 mode in UHS-I, these normally fast UHS-II cards were operating well below their speed potential in the camera. Newer production Lexar 2000x and 1000x UHS-II cards performed as expected. Newer cards are noted in the charts above with a revision in the card name (eg. Rev E). This revision code is printed above the bar code on the product packaging.

Using Two Card Slots

The GH5 has dual SD card slots and supports UHS-II cards in both slots. There are three ways to use the slots: use one after the other is full (overflow), write the same images to both cards (backup) or write different image formats separately to each card. Performance in overflow mode is the same as when shooting with only one card in the camera.

Writing the same images to both cards (backup) reduces overall performance. With Sony G-Series UHS-II cards in both slots, 103 RAW+JPEG were captured in 30 seconds, versus 119 when writing to only one card. In RAW mode 121 images were captured, which is less than the 163 that just one card alone provided. The write speed averaged 51.4 MB/s writing RAW to both cards compared with the 91.9MB/s average when writing to one card. When shooting JPEG only, 211 images were captured to both cards in 30 seconds, versus 314 for one card. When using cards with diffrent write speeds in backup mode, the speed will be reduced by the speed of the slower card.

Writing RAW to one card and JPEG to the second card provided nearly the same performance as writing both image types to one card, assuming a fast card is used in both slots. Compare the charts below for examples using different card and shooting combinations. The chart below shows the number of shots captured in 30 seconds of continuous shooting. The time does not include buffer clearing.

Mode: OverflowRAW + JPEGRAWJPEG
Sony SF-G UHS-II 64GB119163314
Sony SF-G UHS-II 128GB119163303
SanDisk Extreme Pro UHS-I V30 256GB95111214
SanDisk Extreme UHS-I V30 256GB95111210
Mode: Backup Card 1 & Card 2RAW + JPEGRAWJPEG
Sony SF-G UHS-II 64GB (Card 1)
Sony SF-G UHS-II 128GB (Card 2)
103121211
SanDisk Extreme Pro UHS-I V30 256GB (Card 1)
SanDisk Extreme UHS-I V30 256GB (Card 2)
7987155
Mode: RAW Card 1 / JPEG Card 2RAW & JPEG
Sony SF-G UHS-II 64GB (RAW)
Sony SF-G UHS-II 128GB 64GB (JPEG)
121
Sony SF-G UHS-II 128GB (RAW)
Sony M Series UHS-II 128GB (JPEG)
117
Sony SF-G UHS-II 64GB (RAW)
SanDisk Ultra 80MB/s 64GB (JPEG)
93

Recommended SD Cards for the Panasonic GH5

Fastest:
Sony SF-G UHS-II 64GB SDXC Card
Sony SF-G UHS-II 64GB SDXC Card
Fast:
Lexar 2000x UHS-II 64GB SDXC card
Lexar Professional 2000x UHS-II Rev E 64GB SDXC Card
Best Value:
Sony M Series UHS-II 32GB SDHC Card
Sony M Series UHS-II SD Cards

The fastest card for the GH5 is the Sony SF-G UHS-II 64GB card. The 128GB version of the G Series card performed nearly as fast. Next fastest were Lexar 2000x UHS-II cards, with the Lexar 2000x UHS-II 64GB Rev E SDXC Card operating nearly as fast as the Sony G Series cards. Several other UHS-II trail just behind, with Hoodman Steel 2000x UHS-II, Transcend Ultimate UHS-II and SanDisk Extreme Pro 300MB/s UHS-II cards in various capacities among the top 12 fastest cards for average write speed in the GH5.

The best value SD cards for the GH5 are Sony M Series cards. The M Series UHS-II cards have a lower write speed compared to the G Series, but cost significantly less. Since the GH5 is not able to take advantage of the full write speed of the fastest UHS-II cards, the M Series perform nearly as well as the G Series in the camera. Additionally, the M Series cards offer a very high 260MB/s read speed (with benchmarks reaching above 270MB/s read speed). The GH5 does not support UHS-I SDR104 mode, which limits UHS-I performance. The GH5 requires UHS-II cards to enable higher write speeds.

The fastest UHS-I card in the camera was the SanDisk Extreme Pro 95MB/s U3 V30 256GB and was followed closely by several other size SanDisk Extreme Pro and Extreme Plus cards. With UHS-I cards the highest average write speed measured was 40.0 MB/s.