TESTA Yes, mostly on shallow queue random 4k operations, by up to around 40 MBps
CPU power saving states allow idle cores to sleep (C1) or partially sleep (C2...). Activating a core from a sleeping or partially sleeping state takes enough time to impact SSD performance by up to 40 MBps. The changes in performance are most noticeable on shallow queue depth random 4K operations. Even headline sequential speeds can be impacted by up to around 20 MB/s. For most users, disabling power saving states in the BIOS is not worth the slightly higher power consumption and reduced peak CPU performance that results. Peak CPU performance is reduced on Intel chips because of the way turbo boost is implemented. In order to turbo boost an active core, inactive cores are put to sleep in order to keep overall temperature down.
CPU power saving states allow idle cores to sleep (C1) or partially sleep (C2...). Activating a core from a sleeping or partially sleeping state takes enough time to impact SSD performance by up to 40 MBps. The changes in performance are most noticeable on shallow queue depth random 4K operations. Even headline sequential speeds can be impacted by up to around 20 MB/s. For most users, disabling power saving states in the BIOS is not worth the slightly higher power consumption and reduced peak CPU performance that results. Peak CPU performance is reduced on Intel chips because of the way turbo boost is implemented. In order to turbo boost an active core, inactive cores are put to sleep in order to keep overall temperature down.
2020 Hardware Rankings
 PC Score |
PC Status |
|
|---|---|---|
| 0 secs agoAsus ROG STRIX B360-G GAMING | Battle cruiser | 68% |
| 1 sec agoB450 TOMAHAWK MAX (MS-7C02) | UFO | 79% |
| 1 sec agoAsrock B365M Pro4 | UFO | 41% |
| 2 secs agoGigabyte GA-B365M H | Nuclear submarine | 49% |
| 6 secs agoAsus ROG STRIX Z390-E GAMING | Aircraft carrier | 41% |
| 8 secs agoLenovo 81BF | Speed boat | 57% |
| 9 secs agoAsus TUF GAMING X570-PLUS | UFO | 57% |
| 10 secs agoMPG Z390 GAMING PRO CARBON A... | UFO | 49% |
| 15 secs agoGigabyte GA-B150M-DS3H-CF | Aircraft carrier | 38% |
| 15 secs agoZ270 KRAIT GAMING (MS-7A59) | Tree trunk | 34% |
| 20 secs agoTUF GAMING X570-PLUS (WI-FI) | UFO | 78% |
| 22 secs agoAsus ROG STRIX X570-F GAMING | UFO | 82% |
| 24 secs agoAsus P8H67 | Yacht | 49% |
| 26 secs agoAsus TUF Z270 MARK 2 | Surfboard | 37% |
| 29 secs agoAsus ROG STRIX X570-F GAMING | Tree trunk | 37% |
| 31 secs agoGA-Z390 I AORUS PRO WIFI-CF | UFO | 99% |
| 37 secs agoGigabyte GA-G1.Sniper M5 | Surfboard | 4% |
| 40 secs agobin bin | Gunboat | 47% |
| 41 secs agoAsus B85M-E | Tree trunk | 79% |
| 42 secs agoAsus ROG STRIX Z390-F GAMING | UFO | 72% |