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.
2020 Hardware Rankings
 PC Score |
PC Status |
|
|---|---|---|
| 3 secs agoFujitsu CELSIUS W280 | Battle cruiser | 13% |
| 3 secs agoHP Pavilion Notebook | Battle cruiser | 80% |
| 14 secs agoLenovo 81Q4 | Nuclear submarine | 74% |
| 14 secs agobin bin | Tree trunk | 20% |
| 19 secs agoAsrock Z390 Taichi | Tree trunk | 99% |
| 21 secs agoLenovo 20382 | Jet ski | 47% |
| 22 secs agoGigabyte Z390 GAMING X | UFO | 70% |
| 23 secs agoMSI MS-7345 | Tree trunk | 43% |
| 25 secs agoAsrock H87M-ITX | Battleship | 26% |
| 27 secs agoAsrock Z87 Extreme3 | Tree trunk | 42% |
| 30 secs agoAsus PRIME A320M-K | Aircraft carrier | 70% |
| 31 secs agoMSI H97 GAMING 3 (MS-7918) | Aircraft carrier | 88% |
| 34 secs agoTUF Gaming FA506IH_FA506IH | Aircraft carrier | 59% |
| 34 secs agoMSI X99A RAIDER (MS-7885) | Aircraft carrier | 34% |
| 37 secs agoHP EliteBook 8460p | Gunboat | 63% |
| 37 secs agoHP Pavilion Sleekbook 14 | Speed boat | 58% |
| 44 secs agoTUF Gaming FX505DT_FX505DT | Sail boat | 24% |
| 50 secs agoMSI H310M PRO-VD (MS-7B33) | Tree trunk | 51% |
| 50 secs agoGA-B365 M AORUS ELITE-CF | Nuclear submarine | 60% |
| 54 secs agoDell Precision M2800 | Battle cruiser | 68% |