CPU won't utilize Turbo Boost?
CPU won't utilize Turbo Boost?
Hello. My Dell Optiplex 790 has recently been upgraded with an i5-2500K processor. The system previously faced bottlenecks with the older i3-2100, but now struggles with similar issues. The specs are as follows: Dell Optiplex 790, BIOS A21, i5-2500K @3.3 GHz, AMD HD7870 XT, 1TB 7.2K RPM Western Digital, Venus 450W PSU, and Hynix memory with 2x2 + 2x4GB (12GB total) DDR3 RAM.
I noticed after installing the CPU that it didn’t reach the advertised Turbo Boost speed—it stays at 3.3 GHz regardless. I turned on Turbo Boost in BIOS, but it still doesn’t activate properly. Despite running numerous benchmarks and testing with Intel XTU, there are no overclocking options and Turbo Boost remains disabled.
Anyone have any advice on resolving this problem? Thank you very much for your help.
Yes, I planned to mention that enabling EIST and the C states would be a solid starting point, assuming they weren't already. I'd also describe navigating the control panel, selecting your power plan, choosing "change plan settings," then moving to advanced settings and opening processor power management.
The motherboard model number is hard to determine without it. It should be visible somewhere on the board. There could be several possible models since most Optiplex boards have many sub-models. It's also conceivable the board wasn't designed for that CPU, even if basic support exists. Power delivery and VRM setup might not be suitable for a lower-end board. If the board lacks turbo features because the included i3 couldn't handle boost, your i5 won't either.
Darkbreeze :
The motherboard model number is hard to determine without it. It should be visible somewhere on the board. There might be several possible models, since most Optiplex boards have many sub-models. It's also conceivable that this board wasn't meant for that CPU, even if it might technically work. The power delivery and VRM setup could prevent it if it's a low-end board. If the board doesn’t support turbo features because the included i3 can’t boost, your i5 won’t either.
Apologies for the delayed reply. Do you know where the model number is located on the board? I’ve found a few clues: a piece of paper with a barcode and the chip numbers SCH5544-NS C1114-A1P007E018J145997C. I’m not very sure about these symbols, but I hope it’s correct.
Darkbreeze:
Could you provide the express service tag number for your device? It should be visible on the case, probably on a sticker or decal. I noticed two codes on the sticker; I'll note them down.
Service Tag: FSGCYQ1
Express Service Code: 34372266697
It was a mistake, I'm really sorry and think I'm quite foolish. Your help was appreciated. The problem was that I had to turn on Intel Speed Step, and once I did, my Turbo Boost worked perfectly. Thanks again!
Yes, I planned to mention that enabling EIST and the C states would be a solid starting point, assuming they weren't already. I'd also describe navigating the control panel, selecting your power plan, choosing "change plan settings," then moving to advanced settings and opening processor power management.