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I pulled out the CMOS & it reset the bios, went in & it was saying CPU speed 100.00x8=800, I disabled C States & EIST. CPU bade clock MHz shows as 100.00 & CPU settings shows Adjusted CPU freq as 4000MHz whilst ring shows as 4100. Under MISC settings within the CPU I disabled EIST again & Enhanced Turbo, leaving just Intel Turbo Boost. everything seems ok for now, however the issues sometimes goes away after a solid reset via Cable out & PSU turned off so I'll monitor and reply back if it happens again. windows already runs in high power.

So, from searching online it's "Elist" which is disabled. Also in the bios CPU still goes to 0.80.

I'll try this, any idea where I'd find it in my board and whether it's even supported? Yeah. everything set to maximum on it.

Hi, I have no idea why but my CPU just seems to randomly drop to 800Mhz when gaming or even just sitting watching YouTube videos (like I am now). Below is my Task manager which shows barely any CPU usage. and here is my speccy results. It doesn't appear to be Thermal Throttling, it appears to just stop. My system is Windows 10 Pro, updated to most recent with a genuine license. The Speed goes to 3.99 then drops to 1Ghz, back to 3.99 then down to 0.79 and stays there, occasionally getting up to the 3.99 and staying. I'm unable to update the BIOS due to an issue with MSI software where it just says the file is corrupt despite downloading it directly from the website.. Any help on this would be appreciated because it's becoming a royal pan. Thanks.

I currently have a 4790k, r9 390x and 16GB 1866Mhz memory and one thing I've noticed is that my FPS in most games barely gets >60 on Medium. CPU, GPU and memory are not even at full load, I'm thinking it's just overall performance of a 390x being a bit slow or something? GTA V: Medium/Low mix I get around 45-55 Wildlands: Medium/Low is around 60 but game looks absolutely dreadful Sniper Ghost Warrior 3: Med/High stays at around 55-60 Sniper Elite 4: Stutters but is at 60 constantly I'm mostly just sick of playing games on terrible settings and compromising view just to play storyline, I'd rather have a decent graphical and gameplay in one but with all the new Nvidia GPUs coming out I don't want to risk spending £450-500 for a 1070 only for it to be obsolete, if that makes sense?