If have a new SD Card Sandisk Extrem PRO for M3.
CHDK benchmark RAW Write goes to 68400 Kb/s.
The normal Sandisk Extrem has 52000 Kb/s
Sandisk Extrem
date,exp,shot_ready_tick,ready_time,wait_time,shot_tick,raw_tick,raw_time,info
02/22/2019 20:20:34,2453,67700,0,0,67700,67940,240,platform:m3-101a-1.5.0-5102 Sep 23 2018 09:18:55 shots:15 interval:0 cont=true
02/22/2019 20:20:35,2454,67970,270,-270,67970,68250,280,
02/22/2019 20:20:35,2455,68280,310,-310,68280,68540,260,
02/22/2019 20:20:35,2456,68570,290,-290,68570,68810,240,
02/22/2019 20:20:36,2457,68870,300,-300,68870,69110,240,
02/22/2019 20:20:36,2458,69320,450,-450,69320,69580,260,
02/22/2019 20:20:37,2459,69910,590,-590,69910,70180,270,
02/22/2019 20:20:37,2460,70510,600,-600,70510,70780,270,
02/22/2019 20:20:38,2461,71120,610,-610,71120,71380,260,
02/22/2019 20:20:38,2462,71720,600,-600,71720,71980,260,
02/22/2019 20:20:39,2463,72310,590,-590,72310,72570,260,
02/22/2019 20:20:40,2464,72900,590,-590,72900,73170,270,
02/22/2019 20:20:40,2465,73490,590,-590,73490,73750,260,
02/22/2019 20:20:41,2466,74080,590,-590,74080,74340,260,
02/22/2019 20:20:41,2467,74670,590,-590,74670,74930,260,
Sandisk Extrem PRO
date,exp,shot_ready_tick,ready_time,wait_time,shot_tick,raw_tick,raw_time,info
02/22/2019 20:22:58,2468,35480,0,0,35480,35720,240,platform:m3-101a-1.5.0-5102 Sep 23 2018 09:18:55 shots:15 interval:0 cont=true
02/22/2019 20:22:59,2469,35750,270,-270,35750,36030,280,
02/22/2019 20:22:59,2470,36060,310,-310,36060,36330,270,
02/22/2019 20:22:59,2471,36360,300,-300,36360,36600,240,
02/22/2019 20:22:59,2472,36660,300,-300,36660,36900,240,
02/22/2019 20:23:00,2473,36980,320,-320,36980,37240,260,
02/22/2019 20:23:00,2474,37490,510,-510,37490,37760,270,
02/22/2019 20:23:01,2475,37900,410,-410,37900,38160,260,
02/22/2019 20:23:01,2476,38410,510,-510,38410,38680,270,
02/22/2019 20:23:02,2477,38820,410,-410,38820,39080,260,
02/22/2019 20:23:02,2478,39330,510,-510,39330,39600,270,
02/22/2019 20:23:02,2479,39730,400,-400,39730,40000,270,
02/22/2019 20:23:03,2480,40250,520,-520,40250,40510,260,
02/22/2019 20:23:04,2481,40770,520,-520,40770,41030,260,
02/22/2019 20:23:04,2482,41170,400,-400,41170,41450,280,