SD카드(Secure Digital)
우리가 흔히 SD카드라고 부르며 스마트폰, DSLR, 전자기기에 사용하는 메모리카드는 1999년 개발됐습니다.
SanDisk, Panasonic, Toshiba 등이 공동으로 개발한 표준으로 현재 전자업계의 많은 곳에서 사용되고 있으며, 2000년 1월 비영리 단체인 SD카드 협회(SDA)를 결성합니다.
작은사이즈에 고용량, 빠른 속도와 저전력 그리고 확장성을 갖고 있는 것이 바로 SD카드의 특징입니다.
SD카드의 크기
1. 일반 SD 카드
2. 미니 SD 카드 - 현재는 단종되어서 나오지 않는다!
3. 마이크로 SD 카드 - 스마트폰처럼 소형화 전자기기에 많이 사용된다.
포맷과 파일시스템에 의한 분류 : SDSC, SDHC, SDXC
왼쪽 SD카드를 보면 64GB Micro SDXC 1 (용량), U안에 1(클래스)
오른쪽 SD카드를 보면 32GB Micro SDHC 2(용량), U안에 3(클래스) 가 적혀있는 것의 의미를 알아보자
SD : 최대 2GB까지 지원, FAT16
SDHC : 최대 32GB까지 지원, FAT32
SDXC : 최대 2TB까지 지원, exFAT
SDUC : 최대 128TB까지 지원, exFAT
Speed Classes에 의한 분류 : NS mode, HS mode, UHS
Normal Speed mode : 최대 입출력속도 12.5MB/s, SD카드에 별도 표시 없음
High Speed mode : 최대 입출력속도 25MB/s, SD카드에 별도 표시 없음
UHS-I : 최대 입출력속도 50MB/s(SDR50, DDR50 규격), 104MB/s(SDR104 규격), SD카드에 UHS규격(U1~U3) 표시.
UHS-II : 최대 입출력속도 312MB/s, SD카드에 UHS규격(U1~U3) 표시.
UHS-III : 최대 입출력속도 624MB/s, SD카드에 UHS규격(U1~U3) 표시.
SD Express : 최대 입출력속도 985MB/s, PCIe Gen.3/NVMe 인터페이스
Speed Class/UHS Speed Class/Video Speed Class
SD메모리 카드 제조 업체와 브랜드에 따라 메모리 액세스 속도가 크게 다릅니다. 속도가 다양하면 스트리밍 콘텐츠를 확실하게 녹화할 수 있는 카드를 찾기 어렵죠. 비디오를 녹화할 때 원활한 재생을 위해 녹화 중에 '프레임 손실'을 방지하려면 최소 쓰기 속도가 일정해야 합니다. SDAssociation은 고급 비디오 품질 레코딩에 대한 요구에 부응하기 위해 다양한 SpeedClass표준을 정의했습니다. 호스트 및 카드 제품에 표시된 속도 클래스 기호는 사용자가 신뢰할 수 있는 기록을 위한 최상의 조합을 결정하는 데 도움이 됩니다.
SD Card BenchMark
https://www.cameramemoryspeed.com/reviews/sd-cards/
디지털 카메라의 메모리 카드 비교 및 성능 시험
SD Memory Card Benchmarks
| SD Card Benchmark | Card Size GB | Seq. Read 1000MB MB/s | Seq. Write 1000MB MB/s | Rand. Read 512KB MB/s | Rand. Write 512KB MB/s | Rand. Read 4KB MB/s QD1 | Rand. Read 4KB IOPS QD1 | Rand. Write 4KB MB/s QD1 | Rand. Write 4KB IOPS QD1 | Rand. Read 4KB MB/s QD32 | Rand. Read 4KB IOPS QD32 | Rand. Write 4KB MB/s QD32 | Rand. Write 4KB IOPS QD32 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Transcend Ultimate UHS-II U3 32GB | 32 | 307.1 | 186.3 | 240.3 | 3.3 | 19.7 | 4800 | 3.9 | 948 | 16.6 | 4049 | 3.6 | 878 |
| SanDisk Extreme Pro 300MB/s UHS-II 64GB | 64 | 307.0 | 247.7 | 216.2 | 2.9 | 13.6 | 3327 | 2.6 | 625 | 15.8 | 3860 | 2.2 | 549 |
| SanDisk Extreme Pro 300MB/s UHS-II 32GB | 32 | 306.8 | 250.4 | 215.4 | 2.8 | 16.6 | 4049 | 2.4 | 576 | 17.7 | 4312 | 2.2 | 531 |
| Transcend Ultimate UHS-II U3 64GB | 64 | 305.6 | 183.1 | 242.9 | 3.3 | 19.1 | 4664 | 3.4 | 831 | 15.9 | 3870 | 3.4 | 828 |
| Delkin 1900x UHS-II 32GB | 32 | 304.2 | 51.1 | 207.8 | 1.5 | 14.4 | 3505 | 2.5 | 609 | 16.1 | 3924 | 1.9 | 465 |
| Lexar Professional 2000x UHS-II Rev B 128GB | 128 | 304.1 | 246.1 | 213.6 | 3.1 | 16.1 | 3921 | 2.5 | 619 | 17.0 | 4156 | 2.4 | 575 |
| Sony SF-G 300MB/s UHS-II 32GB | 32 | 303.9 | 273.7 | 235.4 | 3.5 | 14.2 | 3465 | 1.9 | 476 | 15.1 | 3691 | 2.2 | 527 |
| SanDisk Extreme Pro 300MB/s UHS-II 128GB | 128 | 301.8 | 247.7 | 215.9 | 3.2 | 16.8 | 4109 | 2.5 | 606 | 18.1 | 4418 | 2.2 | 536 |
| Lexar Professional 2000x UHS-II Rev E 64GB | 64 | 301.5 | 266.5 | 245.1 | 9.8 | 18.0 | 4389 | 1.9 | 471 | 14.4 | 3504 | 2.0 | 479 |
| Lexar Professional 2000x UHS-II Rev E 32GB | 32 | 301.5 | 263.4 | 254.4 | 2.8 | 18.9 | 4619 | 2.6 | 629 | 13.3 | 3253 | 1.8 | 445 |
| Sony SF-G 300MB/s UHS-II 64GB | 64 | 298.3 | 273.4 | 233.1 | 3.4 | 14.4 | 3524 | 2.0 | 498 | 15.2 | 3719 | 2.2 | 528 |
| Lexar Professional 2000x UHS-II 64GB | 64 | 297.7 | 267.0 | 240.5 | 2.8 | 18.9 | 4614 | 2.8 | 678 | 13.4 | 3282 | 2.6 | 634 |
| Sony SF-G 300MB/s UHS-II 128GB | 128 | 297.0 | 273.2 | 234.8 | 3.7 | 13.9 | 3383 | 1.9 | 452 | 14.7 | 3586 | 2.0 | 490 |
| Lexar Professional 2000x UHS-II 32GB | 32 | 296.5 | 272.6 | 258.7 | 2.4 | 20.9 | 5107 | 2.3 | 573 | 13.9 | 3387 | 2.0 | 476 |
| Sony M Series UHS-II 32GB | 32 | 295.9 | 115.2 | 205.6 | 2.5 | 15.2 | 3715 | 2.2 | 546 | 17.8 | 4348 | 2.0 | 496 |
| Sony M Series UHS-II 128GB | 128 | 295.3 | 95.1 | 209.3 | 1.1 | 16.4 | 3995 | 2.6 | 633 | 17.4 | 4238 | 2.8 | 676 |
| Sony M Series UHS-II 64GB | 64 | 289.2 | 99.6 | 200.9 | 1.2 | 14.3 | 3490 | 2.7 | 657 | 16.7 | 4078 | 2.9 | 709 |
| SanDisk Extreme Pro 280MB/s UHS-II 32GB | 32 | 287.8 | 241.1 | 197.3 | 3.4 | 7.8 | 1908 | 1.6 | 391 | 7.2 | 1770 | 1.6 | 380 |
| Panasonic MicroP2 UHS-II 32GB | 32 | 275.0 | 49.9 | 174.0 | 1.2 | 5.9 | 1440 | 0.1 | 18 | 5.3 | 1293 | 0.1 | 21 |
| Hoodman Steel UHS-II 64GB | 64 | 273.6 | 183.6 | 230.8 | 3.2 | 20.3 | 4960 | 3.5 | 849 | 16.4 | 4009 | 3.0 | 743 |
| Toshiba Exceria Pro UHS-II 32GB | 32 | 261.3 | 235.6 | 229.3 | 13.8 | 14.7 | 3585 | 2.0 | 495 | 19.3 | 4715 | 2.1 | 506 |
| Lexar Professional 1000x UHS-II Rev C 64GB | 64 | 166.5 | 111.5 | 151.1 | 2.5 | 10.0 | 2432 | 1.1 | 261 | 13.3 | 3245 | 1.1 | 263 |
| Lexar Professional 1000x UHS-II Rev C 128GB | 128 | 166.5 | 95.7 | 142.9 | 3.7 | 13.0 | 3164 | 1.4 | 343 | 11.9 | 2905 | 1.4 | 333 |
| Lexar Professional 1000x UHS-II 256GB | 256 | 156.5 | 95.7 | 142.8 | 3.1 | 12.1 | 2950 | 1.4 | 338 | 12.0 | 2938 | 1.4 | 334 |
| Lexar Professional 1000x UHS-II 32GB | 32 | 154.4 | 88.2 | 143.2 | 0.8 | 14.7 | 3586 | 1.3 | 316 | 9.8 | 2386 | 1.0 | 243 |
| Lexar Professional 1000x UHS-II Rev B 32GB | 32 | 154.2 | 85.3 | 142.7 | 0.7 | 17.7 | 4333 | 1.3 | 325 | 9.9 | 2413 | 1.0 | 243 |
| Lexar Professional 1000x UHS-II 64GB | 64 | 153.2 | 84.3 | 140.8 | 1.3 | 13.1 | 3190 | 1.1 | 279 | 9.7 | 2370 | 1.1 | 272 |
| Lexar Professional 1000x UHS-II 128GB | 128 | 152.2 | 86.7 | 140.3 | 1.3 | 13.3 | 3250 | 1.2 | 282 | 10.0 | 2450 | 1.1 | 273 |
| SanDisk Extreme Pro 95MB/s 64GB | 64 | 99.6 | 93.2 | 93.9 | 83.2 | 9.5 | 2309 | 3.9 | 950 | 8.4 | 2057 | 3.6 | 883 |
| SanDisk Extreme Pro 95MB/s 32GB | 32 | 99.6 | 92.8 | 94.3 | 38.1 | 9.8 | 2404 | 3.7 | 896 | 8.7 | 2113 | 2.6 | 630 |
| SanDisk Extreme Plus 90MB/s U3 V30 64GB | 64 | 99.6 | 67.0 | 92.5 | 52.6 | 8.6 | 2101 | 4.0 | 978 | 9.7 | 2370 | 4.1 | 1002 |
| SanDisk Extreme 90MB/s U3 32GB | 32 | 99.6 | 49.5 | 93.3 | 42.0 | 10.2 | 2484 | 3.8 | 936 | 8.0 | 1955 | 2.6 | 639 |
| SanDisk Extreme 90MB/s U3 V30 64GB | 64 | 99.6 | 55.9 | 92.4 | 45.3 | 8.7 | 2115 | 4.0 | 976 | 9.6 | 2344 | 4.1 | 996 |
| SanDisk Extreme Plus 90MB/s U3 V30 32GB | 32 | 99.6 | 67.4 | 93.0 | 52.4 | 8.6 | 2101 | 4.0 | 985 | 9.7 | 2373 | 4.2 | 1017 |
| SanDisk Extreme Pro 95MB/s 128GB | 128 | 99.6 | 92.2 | 93.2 | 80.3 | 9.3 | 2271 | 3.8 | 919 | 8.4 | 2039 | 3.4 | 837 |
| SanDisk Extreme 90MB/s U3 64GB | 64 | 99.6 | 50.1 | 93.3 | 42.4 | 9.9 | 2411 | 4.0 | 969 | 8.4 | 2054 | 3.6 | 871 |
| SanDisk Extreme 90MB/s U3 V30 256GB | 256 | 99.6 | 65.2 | 92.8 | 51.9 | 8.0 | 1961 | 3.4 | 841 | 8.8 | 2154 | 3.7 | 904 |
| SanDisk Extreme 90MB/s U3 V30 32GB | 32 | 99.6 | 54.2 | 93.1 | 44.6 | 8.9 | 2162 | 3.9 | 953 | 9.9 | 2412 | 4.1 | 996 |
| SanDisk Extreme 90MB/s U3 V30 128GB | 128 | 99.6 | 66.4 | 92.9 | 51.8 | 8.9 | 2178 | 3.7 | 897 | 9.8 | 2403 | 4.0 | 988 |
| SanDisk Extreme Pro 95MB/s U3 32GB | 32 | 99.5 | 92.0 | 93.5 | 37.3 | 9.4 | 2290 | 3.5 | 856 | 8.5 | 2079 | 2.7 | 657 |
| SanDisk Extreme Pro 95MB/s U3 V30 128GB | 128 | 99.5 | 92.0 | 93.0 | 64.4 | 8.4 | 2052 | 3.7 | 903 | 9.2 | 2255 | 3.9 | 944 |
| SanDisk Extreme Pro 95MB/s U3 V30 32GB | 32 | 99.5 | 91.6 | 92.8 | 63.1 | 8.6 | 2097 | 3.7 | 893 | 9.5 | 2318 | 3.8 | 929 |
| SanDisk Extreme Pro 95MB/s U3 V30 256GB | 256 | 99.5 | 90.9 | 93.7 | 64.9 | 8.5 | 2067 | 3.8 | 922 | 9.3 | 2268 | 3.9 | 958 |
| SanDisk Extreme Pro 95MB/s U3 V30 64GB | 64 | 99.5 | 91.4 | 93.1 | 64.7 | 8.5 | 2069 | 3.8 | 931 | 9.3 | 2282 | 3.9 | 945 |
| SanDisk Extreme Pro 95MB/s 256GB | 256 | 99.5 | 91.7 | 92.3 | 77.4 | 9.4 | 2289 | 3.4 | 827 | 8.4 | 2057 | 3.3 | 804 |
| SanDisk Extreme Plus 80MB/s 32GB | 32 | 99.5 | 61.6 | 91.7 | 35.7 | 10.2 | 2487 | 3.6 | 867 | 8.0 | 1963 | 2.7 | 648 |
| SanDisk Ultra 80MB/s 128GB | 128 | 99.3 | 51.5 | 90.7 | 25.7 | 7.6 | 1854 | 2.3 | 559 | 8.0 | 1960 | 2.9 | 698 |
| SanDisk Ultra 80MB/s 32GB Card 2 | 32 | 99.3 | 21.0 | 91.4 | 19.7 | 7.3 | 1789 | 2.2 | 545 | 8.0 | 1946 | 2.1 | 515 |
| Toshiba Exceria UHS-I Class 3 32GB | 32 | 98.7 | 61.9 | 91.6 | 2.2 | 11.0 | 2680 | 0.2 | 48 | 17.6 | 4298 | 0.2 | 42 |
| Toshiba Exceria UHS-I Class 3 64GB | 64 | 98.7 | 61.0 | 91.4 | 1.8 | 10.7 | 2618 | 0.2 | 51 | 17.4 | 4248 | 0.2 | 49 |
| Kingston U3 90/80 MB/s 32GB | 32 | 98.5 | 91.4 | 88.5 | 19.1 | 11.5 | 2808 | 1.4 | 349 | 13.3 | 3244 | 1.1 | 262 |
| Kingston U3 90/80 MB/s 64GB | 64 | 98.5 | 88.6 | 86.2 | 3.8 | 11.7 | 2868 | 1.4 | 343 | 14.1 | 3440 | 1.1 | 278 |
| Kingston Class 10 UHS-I 64GB | 64 | 98.5 | 81.2 | 85.2 | 1.1 | 13.1 | 3192 | 0.5 | 134 | 14.9 | 3631 | 0.6 | 158 |
| Panasonic Gold 95/90 64GB | 64 | 98.5 | 88.3 | 84.8 | 1.1 | 12.4 | 3021 | 1.2 | 301 | 14.9 | 3626 | 1.2 | 302 |
| Transcend 95/85 MB/s U3 32GB | 32 | 98.5 | 90.0 | 90.1 | 22.3 | 10.9 | 2665 | 1.3 | 308 | 13.1 | 3194 | 1.4 | 341 |
| Kingston U3 90/80 MB/s 256GB | 256 | 98.5 | 87.7 | 82.9 | 1.0 | 12.2 | 2987 | 1.3 | 326 | 14.2 | 3474 | 1.3 | 329 |
| Sony Ultra-High Durability Professional 64GB | 64 | 98.4 | 77.9 | 83.7 | 1.1 | 11.7 | 2853 | 1.0 | 248 | 13.4 | 3275 | 1.0 | 249 |
| SanDisk Extreme Plus 80MB/s 64GB | 64 | 98.3 | 61.2 | 90.0 | 35.1 | 10.3 | 2519 | 3.6 | 877 | 8.1 | 1979 | 3.2 | 793 |
| PNY Pro Elite 64GB | 64 | 98.2 | 86.6 | 82.8 | 1.0 | 11.5 | 2820 | 1.3 | 324 | 13.2 | 3222 | 1.3 | 329 |
| Sony 95MB/s U3 64GB | 64 | 98.1 | 89.3 | 89.7 | 33.0 | 6.2 | 1515 | 0.9 | 224 | 7.1 | 1732 | 0.9 | 228 |
| Toshiba Exceria Type 2 32GB | 32 | 98.1 | 66.0 | 90.9 | 1.6 | 9.5 | 2318 | 0.7 | 167 | 17.6 | 4306 | 0.3 | 85 |
| Toshiba Exceria Type 1 32GB | 32 | 98.1 | 88.4 | 91.3 | 5.7 | 9.8 | 2386 | 0.4 | 104 | 19.3 | 4720 | 0.4 | 94 |
| Lexar Professional 633x U1 32GB | 32 | 98.0 | 23.3 | 89.5 | 10.4 | 7.4 | 1798 | 1.1 | 266 | 8.0 | 1946 | 1.0 | 256 |
| Lexar Professional 633x U1 64GB | 64 | 98.0 | 29.5 | 88.3 | 13.7 | 6.7 | 1635 | 1.0 | 243 | 7.8 | 1910 | 1.3 | 306 |
| Transcend 95/60 MB/s U3 128GB | 128 | 97.9 | 68.6 | 89.3 | 36.4 | 6.0 | 1466 | 0.9 | 229 | 7.8 | 1900 | 0.9 | 221 |
| Transcend 600x 64GB | 64 | 97.9 | 67.7 | 89.1 | 39.4 | 6.3 | 1543 | 0.9 | 229 | 8.1 | 1987 | 1.2 | 290 |
| Samsung PRO U3 32GB | 32 | 97.9 | 80.4 | 86.8 | 4.9 | 8.3 | 2037 | 2.8 | 691 | 9.6 | 2351 | 1.8 | 433 |
| Samsung PRO Plus 64GB | 64 | 97.9 | 89.2 | 86.9 | 13.6 | 8.0 | 1957 | 2.9 | 713 | 9.8 | 2399 | 2.2 | 538 |
| PNY Elite Performance U3 128GB | 128 | 97.9 | 69.2 | 89.2 | 41.4 | 5.8 | 1421 | 0.9 | 221 | 7.5 | 1834 | 0.9 | 216 |
| Gobe Magic 104MB/s 64GB | 64 | 97.9 | 89.2 | 89.1 | 26.8 | 6.5 | 1575 | 1.3 | 306 | 7.8 | 1893 | 1.2 | 291 |
| PNY Elite Performance U1 32GB | 32 | 97.9 | 38.5 | 89.8 | 24.6 | 6.1 | 1483 | 0.8 | 190 | 7.3 | 1792 | 0.7 | 159 |
| Transcend 600x 128GB | 128 | 97.9 | 69.6 | 87.5 | 34.1 | 5.4 | 1323 | 0.8 | 197 | 6.3 | 1527 | 0.9 | 229 |
| Transcend 95/60 MB/s U3 64GB | 64 | 97.9 | 67.8 | 89.6 | 43.9 | 6.0 | 1457 | 0.8 | 199 | 7.8 | 1915 | 1.0 | 235 |
| Samsung PRO Plus 32GB | 32 | 97.9 | 89.3 | 86.8 | 4.3 | 8.3 | 2016 | 2.9 | 703 | 9.5 | 2307 | 1.9 | 467 |
| PNY Elite Performance U1 64GB | 64 | 97.9 | 67.3 | 89.7 | 43.1 | 6.1 | 1482 | 0.9 | 222 | 7.9 | 1941 | 0.9 | 219 |
| Samsung PRO U3 64GB | 64 | 97.9 | 79.5 | 86.2 | 15.0 | 8.0 | 1947 | 2.9 | 711 | 9.9 | 2419 | 2.1 | 520 |
| Transcend 600x 32GB | 32 | 97.8 | 39.5 | 89.9 | 17.8 | 5.9 | 1428 | 0.8 | 189 | 7.1 | 1722 | 1.0 | 232 |
| Lexar Professional 633x U3 256GB | 256 | 97.8 | 69.3 | 88.7 | 43.5 | 5.6 | 1367 | 0.9 | 214 | 7.3 | 1792 | 0.9 | 217 |
| Gobe Magic 104MB/s 32GB | 32 | 97.8 | 89.1 | 89.5 | 26.4 | 6.6 | 1617 | 1.2 | 291 | 8.3 | 2018 | 1.2 | 298 |
| Transcend 95/60 MB/s U3 256GB | 256 | 97.8 | 69.0 | 87.3 | 33.8 | 5.2 | 1262 | 0.8 | 192 | 5.9 | 1440 | 0.9 | 222 |
| PNY Elite Performance U3 256GB | 256 | 97.8 | 56.5 | 86.9 | 28.5 | 4.9 | 1194 | 0.7 | 162 | 5.8 | 1410 | 0.7 | 164 |
| Lexar Professional 633x U1 128GB | 128 | 97.8 | 30.8 | 85.8 | 13.7 | 5.4 | 1329 | 1.2 | 297 | 6.0 | 1458 | 1.2 | 305 |
| Transcend R95 W85 U3 64GB | 64 | 97.8 | 89.9 | 89.9 | 29.3 | 6.7 | 1625 | 1.2 | 283 | 7.9 | 1924 | 1.2 | 290 |
| Sony 95MB/s U3 32GB | 32 | 97.8 | 89.0 | 89.3 | 31.9 | 6.6 | 1613 | 1.1 | 258 | 7.9 | 1924 | 1.0 | 253 |
| Patriot EP Pro 128GB | 128 | 97.7 | 42.7 | 88.6 | 30.1 | 6.2 | 1509 | 0.8 | 199 | 7.5 | 1826 | 0.9 | 231 |
| Delkin Black 32GB | 32 | 97.7 | 81.9 | 82.9 | 0.9 | 11.5 | 2805 | 0.7 | 162 | 12.9 | 3158 | 0.7 | 160 |
| Delkin Elite 633x 32GB | 32 | 97.7 | 82.1 | 82.5 | 1.0 | 12.0 | 2927 | 0.5 | 130 | 13.7 | 3344 | 0.7 | 159 |
| Patriot EP Pro 90MB/s 64GB | 64 | 97.5 | 42.3 | 89.0 | 25.5 | 6.3 | 1545 | 1.8 | 446 | 7.6 | 1853 | 1.8 | 440 |
| PNY Elite Performance U3 64GB | 64 | 97.5 | 68.7 | 86.8 | 38.7 | 5.7 | 1399 | 1.1 | 258 | 7.7 | 1873 | 1.2 | 287 |
| Patriot EP Pro 90MB/s 32GB | 32 | 97.4 | 48.1 | 80.9 | 0.9 | 9.9 | 2420 | 0.1 | 26 | 11.0 | 2676 | 0.1 | 30 |
| SanDisk Extreme Plus 90MB/s 32GB | 32 | 96.8 | 72.5 | 89.5 | 26.9 | 9.0 | 2206 | 3.3 | 815 | 8.2 | 2004 | 2.6 | 633 |
| Sony 94MB/s 32GB | 32 | 96.7 | 67.1 | 89.9 | 19.3 | 6.6 | 1603 | 0.9 | 231 | 7.3 | 1775 | 0.9 | 214 |
| Lexar Professional 600x 64GB | 64 | 96.6 | 68.6 | 87.8 | 34.2 | 6.1 | 1489 | 0.9 | 222 | 8.1 | 1979 | 1.2 | 295 |
| Lexar Professional 600x 32GB | 32 | 96.6 | 48.9 | 87.0 | 15.2 | 6.9 | 1680 | 1.6 | 381 | 7.5 | 1829 | 1.1 | 268 |
| Panasonic Gold Series 32GB | 32 | 96.4 | 43.8 | 80.6 | 0.9 | 10.2 | 2501 | 0.4 | 101 | 11.5 | 2799 | 0.6 | 138 |
| Kingston Ultimate 32GB | 32 | 96.1 | 47.3 | 79.5 | 0.8 | 9.9 | 2423 | 0.1 | 28 | 10.8 | 2645 | 0.1 | 36 |
| Lexar Professional 633x U3 32GB | 32 | 96.1 | 49.0 | 87.0 | 14.5 | 6.4 | 1568 | 1.3 | 310 | 7.2 | 1759 | 1.4 | 346 |
| Lexar Professional 633x U3 64GB | 64 | 96.0 | 69.3 | 87.5 | 35.2 | 6.1 | 1477 | 1.0 | 246 | 8.0 | 1953 | 1.3 | 312 |
| Samsung PRO 32GB | 32 | 96.0 | 83.3 | 85.0 | 2.2 | 8.1 | 1980 | 1.9 | 471 | 9.5 | 2313 | 1.3 | 318 |
| Samsung PRO 64GB | 64 | 95.9 | 83.9 | 84.5 | 5.1 | 8.0 | 1949 | 1.9 | 452 | 9.3 | 2277 | 1.9 | 467 |
| Lexar Professional 633x U3 128GB | 128 | 95.5 | 68.7 | 87.5 | 35.8 | 5.9 | 1441 | 1.0 | 240 | 8.4 | 2060 | 1.2 | 301 |
| SanDisk Extreme Plus 90MB/s 64GB | 64 | 94.5 | 72.3 | 88.8 | 61.5 | 8.8 | 2160 | 3.4 | 831 | 8.0 | 1944 | 3.6 | 875 |
| SanDisk Ultra 80MB/s 32GB | 32 | 94.2 | 43.4 | 84.0 | 1.3 | 6.6 | 1621 | 1.4 | 331 | 5.1 | 1242 | 0.4 | 89 |
| Kingston Class 10 256GB | 256 | 90.8 | 47.8 | 70.6 | 0.8 | 8.8 | 2138 | 0.3 | 74 | 8.9 | 2179 | 0.2 | 61 |
| SanDisk Extreme 90MB/s U3 128GB | 128 | 86.0 | 78.8 | 81.9 | 71.2 | 9.2 | 2250 | 3.7 | 904 | 8.4 | 2039 | 3.4 | 819 |
| SanDisk Extreme 80MB/s 128GB | 128 | 85.2 | 80.4 | 81.3 | 72.6 | 9.2 | 2246 | 3.7 | 900 | 8.2 | 1990 | 3.4 | 819 |
| SanDisk Ultra 80MB/s 64GB | 64 | 83.3 | 19.3 | 74.2 | 1.5 | 5.7 | 1384 | 0.4 | 104 | 5.4 | 1319 | 1.6 | 398 |
| SanDisk Extreme 80MB/s 256GB | 256 | 83.0 | 79.3 | 78.8 | 71.0 | 9.1 | 2233 | 3.7 | 905 | 8.5 | 2078 | 3.4 | 827 |
| SanDisk Extreme 60MB/s 32GB | 32 | 75.8 | 55.3 | 72.6 | 47.6 | 10.0 | 2448 | 3.8 | 917 | 7.9 | 1922 | 2.6 | 626 |
| Lexar Professional 400x 32GB | 32 | 72.6 | 43.7 | 69.6 | 13.1 | 6.0 | 1470 | 1.0 | 248 | 6.6 | 1604 | 1.1 | 274 |
| SanDisk Extreme 60MB/s 64GB | 64 | 71.3 | 52.7 | 69.0 | 45.5 | 10.3 | 2515 | 3.8 | 929 | 8.1 | 1974 | 3.4 | 832 |
| SanDisk Ultra 40MB/s 32GB Card 3 | 32 | 47.9 | 19.8 | 45.9 | 11.4 | 6.3 | 1534 | 0.9 | 229 | 6.8 | 1659 | 1.0 | 255 |
| SanDisk Ultra 40MB/s 64GB | 64 | 47.9 | 16.2 | 45.3 | 0.8 | 5.6 | 1357 | 2.0 | 491 | 4.6 | 1134 | 1.9 | 473 |
| SanDisk Extreme 45MB/s 32GB | 32 | 47.9 | 45.5 | 44.7 | 1.7 | 4.7 | 1156 | 1.6 | 391 | 4.1 | 1006 | 1.0 | 251 |
| SanDisk Ultra 40MB/s 32GB Card 1 | 32 | 47.9 | 45.6 | 46.5 | 40.5 | 10.4 | 2533 | 3.9 | 954 | 7.4 | 1807 | 2.4 | 582 |
| SanDisk Ultra 40MB/s 32GB Card 2 | 32 | 47.8 | 20.0 | 45.9 | 11.5 | 6.2 | 1502 | 0.9 | 230 | 6.7 | 1645 | 1.1 | 256 |
| Samsung EVO 64GB | 64 | 47.7 | 23.9 | 46.1 | 39.4 | 8.5 | 2065 | 2.2 | 544 | 9.0 | 2203 | 2.5 | 599 |
| Samsung EVO 32GB | 32 | 47.7 | 30.0 | 45.2 | 25.0 | 8.3 | 2028 | 2.0 | 479 | 9.0 | 2197 | 1.8 | 439 |
| Toshiba NFC 16GB | 16 | 37.9 | 13.2 | 35.2 | 1.4 | 2.9 | 710 | 0.5 | 119 | 3.0 | 738 | 0.2 | 55 |
| Toshiba FlashAir II 32GB | 32 | 19.1 | 13.1 | 18.8 | 1.5 | 7.1 | 1729 | 0.2 | 37 | 8.7 | 2113 | 0.1 | 34 |
Micro SD Memory Card Benchmarks
| microSD Card Benchmark | Card Size GB | Seq. Read 1000MB MB/s | Seq. Write 1000MB MB/s | Rand. Read 512KB MB/s | Rand. Write 512KB MB/s | Rand. Read 4KB MB/s QD1 | Rand. Read 4KB IOPS QD1 | Rand. Write 4KB MB/s QD1 | Rand. Write 4KB IOPS QD1 | Rand. Read 4KB MB/s QD32 | Rand. Read 4KB IOPS QD32 | Rand. Write 4KB MB/s QD32 | Rand. Write 4KB IOPS QD32 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lexar Professional 1800x microSD UHS-II 32GB | 32 | 301.3 | 247.9 | 213.9 | 3.1 | 15.6 | 3805 | 2.1 | 504 | 17.3 | 4226 | 1.6 | 400 |
| Lexar Professional 1800x microSD UHS-II 64GB | 64 | 300.5 | 248.3 | 212.4 | 3.1 | 16.8 | 4107 | 1.7 | 422 | 17.8 | 4355 | 1.5 | 375 |
| SanDisk Extreme Pro UHS-II 275MB/s microSDXC 64GB | 64 | 290.7 | 106.9 | 205.8 | 1.2 | 14.6 | 3567 | 1.2 | 287 | 17.0 | 4144 | 1.5 | 363 |
| Lexar Professional 1800x microSD UHS-II 128GB | 128 | 290.1 | 108.2 | 200.1 | 1.2 | 15.5 | 3794 | 1.1 | 265 | 18.1 | 4411 | 1.3 | 321 |
| Lexar Professional 1000x UHS-II microSD 128GB | 128 | 163.9 | 59.3 | 135.6 | 1.5 | 15.6 | 3798 | 1.4 | 354 | 16.3 | 3975 | 1.4 | 331 |
| Lexar Professional 1000x microSD UHS-II 32GB | 32 | 152.0 | 53.0 | 140.8 | 13.8 | 11.3 | 2747 | 1.8 | 449 | 8.9 | 2184 | 1.2 | 293 |
| Lexar Professional 1000x UHS-II microSD 64GB | 64 | 151.2 | 54.0 | 138.2 | 20.6 | 11.3 | 2756 | 1.8 | 433 | 9.3 | 2281 | 1.7 | 407 |
| SanDisk Extreme Plus 80MB/s microSD 32GB | 32 | 99.6 | 65.7 | 93.9 | 54.3 | 10.0 | 2443 | 3.8 | 939 | 8.8 | 2147 | 2.7 | 658 |
| SanDisk Extreme Plus 95/90 MB/s microSD 64GB | 64 | 99.6 | 92.2 | 93.4 | 80.8 | 9.3 | 2260 | 3.8 | 926 | 8.2 | 2009 | 3.4 | 826 |
| SanDisk Extreme Pro 95MB/s microSDXC 64GB | 64 | 99.6 | 92.6 | 93.2 | 82.3 | 9.3 | 2282 | 3.8 | 932 | 8.3 | 2028 | 3.5 | 866 |
| SanDisk Extreme 90MB/s microSDHC 32GB | 32 | 99.6 | 49.0 | 93.5 | 41.9 | 9.7 | 2372 | 3.8 | 918 | 8.0 | 1950 | 2.6 | 633 |
| SanDisk Extreme 90MB/s U3 V30 microSDHC 32GB | 32 | 99.6 | 71.7 | 93.1 | 53.6 | 8.8 | 2148 | 4.1 | 1011 | 9.8 | 2400 | 4.2 | 1017 |
| SanDisk Extreme Plus 95/90 MB/s U3 V30 microSDHC 32GB | 32 | 99.6 | 91.7 | 93.5 | 65.1 | 8.3 | 2024 | 4.3 | 1042 | 9.4 | 2307 | 4.3 | 1048 |
| SanDisk Extreme Plus 95/90 MB/s U3 V30 microSDXC 128GB | 128 | 99.6 | 90.8 | 93.5 | 64.7 | 8.3 | 2018 | 4.2 | 1035 | 9.3 | 2280 | 4.4 | 1066 |
| SanDisk Extreme Pro 95MB/s microSDHC 32GB | 32 | 99.6 | 92.4 | 93.0 | 35.3 | 9.5 | 2321 | 3.8 | 919 | 9.6 | 2354 | 2.7 | 652 |
| SanDisk Extreme 90MB/s U3 V30 microSDXC 128GB | 128 | 99.6 | 64.4 | 93.2 | 52.5 | 8.4 | 2054 | 4.1 | 994 | 9.3 | 2279 | 4.2 | 1029 |
| SanDisk Extreme 90MB/s U3 V30 microSDXC 64GB | 64 | 99.6 | 72.5 | 93.0 | 55.1 | 8.7 | 2129 | 4.1 | 1003 | 9.7 | 2376 | 4.2 | 1016 |
| SanDisk Extreme Plus 95/90 MB/s U3 V30 microSDXC 64GB | 64 | 99.6 | 92.5 | 93.4 | 76.6 | 9.6 | 2335 | 3.9 | 950 | 8.6 | 2102 | 3.7 | 912 |
| SanDisk Extreme Plus 100MB/s A1 microSDXC 128GB | 128 | 99.5 | 91.2 | 92.9 | 64.5 | 8.5 | 2072 | 4.2 | 1013 | 9.4 | 2287 | 4.2 | 1035 |
| SanDisk Extreme 100MB/s A1 microSDXC 128GB | 128 | 99.5 | 64.3 | 92.8 | 53.2 | 8.4 | 2060 | 4.3 | 1046 | 9.3 | 2273 | 4.3 | 1059 |
| SanDisk Extreme Plus 100MB/s A1 microSDXC 64GB | 64 | 99.5 | 90.9 | 92.9 | 64.2 | 8.5 | 2064 | 4.2 | 1027 | 9.3 | 2277 | 4.4 | 1070 |
| SanDisk Extreme Plus 95/90 MB/s microSD 32GB | 32 | 99.5 | 92.3 | 93.0 | 34.8 | 9.4 | 2294 | 3.7 | 909 | 10.0 | 2437 | 3.0 | 741 |
| SanDisk Extreme 100MB/s A1 microSDXC 64GB | 64 | 99.5 | 72.6 | 92.9 | 55.7 | 9.6 | 2335 | 4.4 | 1079 | 10.1 | 2464 | 4.5 | 1109 |
| SanDisk Extreme Plus 100MB/s A1 microSDHC 32GB | 32 | 99.5 | 91.8 | 93.5 | 63.6 | 8.6 | 2098 | 4.3 | 1061 | 9.5 | 2318 | 4.4 | 1082 |
| SanDisk Ultra 80MB/s microSD 64GB | 64 | 99.5 | 21.4 | 90.6 | 22.5 | 7.5 | 1842 | 2.7 | 655 | 8.0 | 1951 | 2.6 | 633 |
| SanDisk Extreme 100MB/s A1 microSDHC 32GB | 32 | 99.5 | 72.2 | 92.6 | 55.2 | 9.6 | 2335 | 4.3 | 1045 | 10.2 | 2481 | 4.4 | 1077 |
| SanDisk Ultra 80MB/s microSD 128GB | 128 | 99.5 | 78.3 | 90.8 | 27.1 | 6.5 | 1577 | 3.5 | 857 | 6.8 | 1656 | 3.6 | 881 |
| Transcend 633x microSDHC 32GB | 32 | 99.0 | 90.3 | 90.7 | 26.2 | 6.3 | 1543 | 1.1 | 271 | 7.5 | 1840 | 1.2 | 291 |
| Patriot EP Series microSDXC 64GB | 64 | 98.5 | 89.4 | 83.8 | 1.0 | 10.9 | 2657 | 1.3 | 314 | 12.9 | 3159 | 1.1 | 270 |
| Kingston U3 (90/80) microSD 64GB | 64 | 98.5 | 85.3 | 85.0 | 1.0 | 12.8 | 3121 | 0.6 | 153 | 15.0 | 3656 | 0.7 | 166 |
| PNY Pro Elite microSDXC 64GB | 64 | 98.5 | 87.8 | 83.6 | 1.0 | 11.7 | 2864 | 1.3 | 310 | 13.3 | 3245 | 1.1 | 275 |
| Patriot EP PRO microSDXC 64GB | 64 | 98.5 | 87.3 | 83.4 | 1.1 | 11.7 | 2848 | 1.2 | 304 | 13.6 | 3325 | 1.1 | 271 |
| Samsung EVO Select microSDXC 256GB | 256 | 98.4 | 89.6 | 82.6 | 54.8 | 6.2 | 1517 | 3.2 | 778 | 9.4 | 2301 | 4.0 | 980 |
| PNY Elite microSDXC 64GB | 64 | 98.0 | 33.0 | 88.0 | 16.0 | 6.9 | 1696 | 1.2 | 299 | 7.8 | 1916 | 1.6 | 384 |
| Lexar Professional 633x microSDXC 64GB | 64 | 98.0 | 28.9 | 88.3 | 15.3 | 6.8 | 1649 | 1.0 | 245 | 7.8 | 1900 | 1.2 | 298 |
| PNY Elite microSDXC 128GB | 128 | 97.9 | 30.5 | 85.7 | 17.1 | 5.4 | 1307 | 1.2 | 290 | 6.0 | 1464 | 1.2 | 301 |
| Samsung PRO Select microSDXC 64GB | 64 | 97.9 | 88.8 | 86.6 | 15.4 | 8.1 | 1979 | 3.0 | 723 | 9.9 | 2413 | 2.1 | 507 |
| Transcend Ultimate 633x microSD 64GB | 64 | 97.8 | 88.2 | 88.0 | 26.6 | 6.0 | 1458 | 1.4 | 345 | 7.1 | 1737 | 1.2 | 296 |
| PNY Elite-X microSDXC 64GB | 64 | 97.8 | 74.7 | 87.5 | 32.8 | 5.5 | 1331 | 1.1 | 269 | 6.4 | 1574 | 1.2 | 301 |
| Samsung PRO microSDXC 64GB | 64 | 97.8 | 80.0 | 86.4 | 13.8 | 8.0 | 1950 | 2.9 | 706 | 9.7 | 2360 | 2.1 | 521 |
| PNY Elite-X microSDHC 32GB | 32 | 97.8 | 77.4 | 89.2 | 26.6 | 6.2 | 1518 | 1.0 | 244 | 7.6 | 1865 | 0.8 | 199 |
| Samsung PRO Plus microSDXC 64GB | 64 | 97.8 | 88.3 | 86.7 | 13.9 | 8.0 | 1941 | 2.9 | 716 | 9.7 | 2367 | 2.0 | 496 |
| Samsung EVO Select microSDXC 64GB | 64 | 97.5 | 26.1 | 88.4 | 65.7 | 10.2 | 2485 | 1.9 | 475 | 10.7 | 2614 | 2.0 | 485 |
| Kingston U3 (90/80) microSD 32GB | 32 | 97.0 | 87.1 | 82.4 | 0.9 | 11.6 | 2825 | 0.5 | 130 | 12.8 | 3134 | 0.7 | 160 |
| PNY Turbo Performance microSDXC 64GB | 64 | 96.8 | 59.8 | 88.7 | 28.9 | 5.8 | 1415 | 0.9 | 215 | 7.0 | 1715 | 1.0 | 245 |
| PNY Turbo Performance U3 microSD 32GB | 32 | 96.7 | 58.1 | 89.2 | 22.3 | 5.9 | 1437 | 0.8 | 205 | 7.1 | 1722 | 0.8 | 193 |
| SanDisk Ultra 80MB/s microSD 32GB | 32 | 95.0 | 68.6 | 87.5 | 35.6 | 6.7 | 1647 | 0.9 | 210 | 7.7 | 1873 | 1.8 | 431 |
| Samsung PRO Plus microSDXC 128GB | 128 | 94.9 | 84.9 | 83.6 | 2.8 | 9.0 | 2209 | 2.2 | 537 | 9.4 | 2294 | 2.1 | 520 |
| Samsung PRO Select microSDXC 128GB | 128 | 94.9 | 85.3 | 83.6 | 2.9 | 9.0 | 2202 | 2.2 | 536 | 9.4 | 2296 | 2.2 | 526 |
| SanDisk Extreme 90MB/s microSDXC 64GB | 64 | 92.8 | 43.7 | 82.5 | 1.6 | 6.3 | 1545 | 1.3 | 317 | 5.0 | 1211 | 0.4 | 87 |
| Lexar Professional 633x microSDXC 200GB | 200 | 91.8 | 37.4 | 80.7 | 10.8 | 5.5 | 1339 | 0.6 | 152 | 6.1 | 1489 | 0.6 | 147 |
| SanDisk Ultra 90MB/s microSD 200GB | 200 | 91.4 | 21.2 | 80.6 | 2.0 | 6.2 | 1507 | 0.5 | 124 | 6.2 | 1517 | 1.9 | 467 |
| Samsung EVO Select microSDXC 128GB | 128 | 88.5 | 23.3 | 78.2 | 17.2 | 5.1 | 1253 | 0.9 | 222 | 5.5 | 1331 | 0.6 | 135 |
| Samsung EVO Plus 128GB microSDXC | 128 | 88.2 | 23.0 | 79.0 | 19.1 | 5.1 | 1257 | 0.9 | 222 | 5.4 | 1330 | 0.8 | 203 |
| Lexar Professional 633x microSDXC 128GB | 128 | 86.2 | 23.2 | 74.8 | 9.5 | 5.2 | 1268 | 0.9 | 230 | 5.5 | 1348 | 0.7 | 164 |
| SanDisk Extreme U3 microSD 32GB | 32 | 75.0 | 54.3 | 72.0 | 46.7 | 9.9 | 2408 | 3.7 | 903 | 8.0 | 1950 | 2.7 | 648 |
| SanDisk Extreme U3 microSD 64GB | 64 | 69.7 | 56.3 | 66.1 | 30.8 | 10.5 | 2572 | 3.5 | 843 | 10.0 | 2446 | 3.2 | 790 |
| SanDisk Ultra microSD 64GB | 64 | 47.9 | 16.3 | 45.2 | 0.9 | 5.3 | 1306 | 1.9 | 476 | 4.5 | 1096 | 1.9 | 461 |
| SanDisk Ultra microSD 32GB | 32 | 47.9 | 15.2 | 45.5 | 0.9 | 6.3 | 1530 | 1.9 | 459 | 5.1 | 1234 | 1.7 | 417 |
| Samsung EVO microSDXC 64GB | 64 | 47.7 | 24.2 | 45.8 | 39.4 | 8.5 | 2080 | 2.2 | 535 | 9.0 | 2193 | 1.9 | 474 |
| Samsung EVO microSD 32GB | 32 | 47.6 | 24.8 | 45.5 | 38.6 | 7.5 | 1830 | 2.0 | 480 | 7.6 | 1863 | 1.5 | 359 |
가격분석 : 128GB UHS-II U3
네이버 최저가 기준 (2018.07.30)
소니 SDXC CLASS10 UHS-II U3 SF-G128
최저262,250원
R : 300MB/s W : 299MB/s
소니 SDXC CLASS10 UHS-II U3 SF-M128 128GB
최저124,070원
R : 260MB/s W : 100MB/s
[Lexar]SDXC CLASS10 UHS-II U3 Professional 2000X
최저124,070원
R : 300MB/s W : 95MB/s
SD Extreme Pro 128GB -SDXPK
최저 280,000원
R : 300MB/s W : 260MB/s
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