slow pc after i5 > i7 upgrade

Davkas · Jan 27, 2017

ok here goes... i upgraded from an i5 to a i7 4790k, my problem is things are running slow, getting 20FPS in minecraft... 20FPS in GTA V (on lowest settings)

I have already reset bios to defaults, disabled onboard graphics,reinstalled win10, updated all drivers and probably more things i am forgetting...

any and all help would be very much appreciated

my spec:

Bios Ver: F4 (or whatever the latest is)
Operating System
Windows 10 Home 64-bit
CPU
Intel Core i7 4790K @ 4.00GHz 29 °C
Haswell 22nm Technology
RAM
8.00GB Dual-Channel DDR3 @ 798MHz (8-9-8-24)
Motherboard
Gigabyte Technology Co. Ltd. B85-HD3 (SOCKET 0) 28 °C
Graphics
T24D390S (1920x1080@60Hz)
4095MB NVIDIA GeForce GTX 1070 (NVIDIA) 31 °C
Storage
931GB Western Digital WDC WD10EZEX-00WN4A0 (SATA) 29 °C
931GB Western Digital WDC WD10EZEX-08WN4A0 (SATA) 30 °C
Optical Drives
TSSTcorp CDDVDW SH-224FB
Audio
Creative X-Fi Audio Processor (WDM)

-Fran- · Jan 27, 2017

From what I could gather using Google, your MoBo (Gigabyte B85-HD3) has a lot of revisions that actually change a couple of important things in the PCB. So, since it seems you upgraded the BIOS, are you 100% sure you used the correct revision for it?

http://www.gigabyte.com/products/product-page.aspx?pid=5094#ov

Also, and something that happens to some MoBo manufacturers with Intel chipsets: the BIOS upgrade process can run into a problem without telling you and it will skip upgrading a zone of the BIOS than handles some specific "recognition" of Hardware tasks (I can't explain it better than this, because I can't remember it better) and it has a *very* annoying solution, but a solution none the less.

I really hope your problem is not the latter, but if it is, you will have to "get down on it" and risk your MoBo unfortunately.

EDIT: Forgot to say. I cannot find anything else to be a potential culprit, other than maybe saying you pasted the HSF wrong, the PSU doesn't deliver enough 12V into the MoBo or aliens hijacking your computer.

Cheers!

chef7734 · Jan 28, 2017

I would replace the i5 and see if you get same results. If you do I would try and install an older bios and see if it fixes it. If it does try and install the i7 and check performance.

Davkas · Jan 28, 2017

hi, thank you both for your replies, i launched Intel(R) Extreme Tuning Utility and it told me the CPU was under thermal throttling, i removed the liquid cooling and wiped the old thermal paste off and it came off in one clump, so the thermal paste had gone off, must have been spoiled in the packaging, so after cleaning the CPU and heatsink of the liquid cooling i went out bought new paste.

i rebuilt my PC and after launching Intels ETU saw that the CPU was no longer in thermal throttling mode, i can now get 60FPS in Minecraft again, i have not as yet tested GTA

thanks again

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slow pc after i5 > i7 upgrade

Davkas

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-Fran-

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chef7734

Distinguished

Davkas

Commendable

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