TESTA A measure of how quickly multiple small files can be read from a device.
4K random read is a disk access pattern whereby small (4K) blocks of data are read from random locations on the surface of the device being tested at a queue depth of one. The term is used primarily within the context of benchmarking and the speed which it is usually measured in, MBps, can be thought of as how effective a device is at quickly retrieving small pieces of data from random locations. This type of access pattern is very common during operating system startup, where lots of configuration and driver files must be read from the disk. Drives that are used to host operating systems will perform much better if they are able to sustain high random read speeds. As a rule of thumb approximately 20% of a typical users overall disk access on a PC will consist of random reads.
4K random read is a disk access pattern whereby small (4K) blocks of data are read from random locations on the surface of the device being tested at a queue depth of one. The term is used primarily within the context of benchmarking and the speed which it is usually measured in, MBps, can be thought of as how effective a device is at quickly retrieving small pieces of data from random locations. This type of access pattern is very common during operating system startup, where lots of configuration and driver files must be read from the disk. Drives that are used to host operating systems will perform much better if they are able to sustain high random read speeds. As a rule of thumb approximately 20% of a typical users overall disk access on a PC will consist of random reads.
2019 Hardware Rankings
 PC Score |
PC Status |
|
|---|---|---|
| 0 secs agoDell Latitude E7440 | Speed boat | 81% |
| 2 secs agoAsus SABERTOOTH Z77 | Battleship | 49% |
| 4 secs agoGigabyte X570 AORUS ELITE | UFO | 69% |
| 4 secs agoAsus X550VX | Speed boat | 35% |
| 5 secs agoB450M PRO-VDH PLUS (MS-7A38) | Battle cruiser | 81% |
| 7 secs agoMSI Z370 PC PRO (MS-7B49) | UFO | 95% |
| 9 secs agoGigabyte GA-A320M-S2H V2-CF | Yacht | 76% |
| 10 secs agoAsus ROG ZENITH EXTREME | Aircraft carrier | 47% |
| 12 secs agoGigabyte GA-78LMT-USB3 R2 | Raft | 22% |
| 21 secs agoAsus Z170M-PLUS | Nuclear submarine | 69% |
| 21 secs agoZ370 GAMING PLUS (MS-7B61) | Battleship | 55% |
| 26 secs agoAsus PRIME X570-P | UFO | 66% |
| 35 secs agoToshiba SATELLITE C660 | Raft | 55% |
| 37 secs agoGA-B450 I AORUS PRO WIFI-CF | Aircraft carrier | 33% |
| 37 secs agoAsus STRIX Z270E GAMING | Tree trunk | 68% |
| 39 secs agoAlienware 17 R5 | UFO | 75% |
| 39 secs agoSamsung R530/R730/P530 | Tree trunk | 41% |
| 45 secs agoGigabyte GA-B450M S2H | Aircraft carrier | 66% |
| 46 secs agoLenovo 20LNS0T700 | Tree trunk | 19% |
| 48 secs agoGigabyte GA-Z270X-Gaming 7 | UFO | 87% |