TESTA Yes, mostly on shallow queue random 4k operations.
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 100 MBps. The changes in performance are most noticeable on shallow queue depth random 4K operations. Even headline sequential speeds can be impacted. 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 100 MBps. The changes in performance are most noticeable on shallow queue depth random 4K operations. Even headline sequential speeds can be impacted. 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.
2021 Hardware Rankings
 PC Score |
PC Status |
|
|---|---|---|
| 0 secs agoAsrock 970A-G/3.1 | Battle cruiser | 34% |
| 1 sec agoDell OptiPlex 7010 | Battleship | 40% |
| 12 secs agoAsus P8H61-M LX | Battleship | 60% |
| 13 secs agoBiostar H61MGV3 | Battle cruiser | 26% |
| 13 secs agoECS B350AM4-M2 | Yacht | 46% |
| 16 secs agoAsus ROG STRIX B550-F GAMING | UFO | 46% |
| 18 secs agoAsus M5A88-M | Speed boat | 17% |
| 20 secs agoGigabyte GA-78LMT-S2 | Tree trunk | 69% |
| 22 secs agoTo Be Filled By O.E.M. | Battleship | 42% |
| 23 secs agoMonster ABRA A7 V11.3 | Tree trunk | 31% |
| 23 secs agoGigabyte GA-A320M-S2H-CF | Aircraft carrier | 32% |
| 25 secs agoMAG B550M MORTAR (MS-7C94) | UFO | 82% |
| 29 secs agoGigabyte X570 AORUS MASTER | Nuclear submarine | 39% |
| 30 secs agoToshiba Satellite P50-C | Gunboat | 77% |
| 30 secs agoAsus H170M-PLUS | Battleship | 54% |
| 32 secs agoAsrock B450M Steel Legend | Aircraft carrier | 72% |
| 35 secs agoB450 TOMAHAWK MAX (MS-7C02) | Aircraft carrier | 48% |
| 36 secs agoGigabyte GA-X570 GAMING X | Nuclear submarine | 86% |
| 36 secs agoAsus ROG Strix GL10DH_GL10DH | Aircraft carrier | 68% |
| 43 secs agoAsus P8H77-V | Aircraft carrier | 68% |