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I5 4690k Speed Step Issues

Douglas Wicker
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it downclocks to 800Mhz at idle

when you put it under load it should go back to 3.9GHz

run intel XTU and see what clock speed it gets to

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Well I haven't experienced this with my 4690k because it is overclocked. Did this happen before or did it just randomly start happening.

My PC Specs

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CPU ¦ Intel Core i5 4690k @4.3GHz, Motherboard ¦ ASUS MAXIMUS RANGER VII, RAM ¦ 8GB (2x4GB) Corsair Value DDR3, Case ¦ Corsair SPEC-02, PSU ¦ Corsair CX600, Storage ¦ Samsung 850 EVO SSD 250GB, Seagate Barracuda 500GB 7200RPM, Seagate Barracuda 2TB 7200RPM, Western Digital Caviar Green 1TB 7200RPM, Mouse ¦ Corsair Sabre RGB Optical Gaming Mouse, Keyboard ¦ Cooler Master Quick Fire TK Cherry MX Blue, Headset ¦ Astro A40 2014 with Mixamp Pro, Microphone ¦ Blue Snowball iCE.

 

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I've had an issue where when EIST (Intel Speedstel) is turned on in my bios, my clock speed is limited to 800mhz?? Really confusing, turning it off means it runs at 3700- 3900mhz constantly. I don't know what is making it do this?

Test it under load,

 

I have configured my cpu to run at 4.5Ghz/1.23v at max load and when at idel or low usage it will go down to 800mhz/0.7v

GPU: EVGA GeForce GTX 980 4GB Superclocked ACX 2.0 @1500mhz + 8000Mhz CPU: Intel Core i7 6700k Delided and Overclocked @4.8  MB: ASUS MAXIMUS VIII IMPACT  RAM: Corsair Vengeance LPX 16GB (2 x 8GB) DDR4-2400 Memory CPU Cooler: Corsair HG10+ H90 +H90 CASE: Corsair 380T  Storage: 120GB Samsung Evo SSD + Crucail 256GB Mx100 + 2TB Seagate/  OS: Windows 10 64bit Power supply:  Corsair RM750

 

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No it sticks at 800mhz whatever the load! It worked fine to start with, then it started to limit at 800mhz, so I did a whole lot of diagnostic and found that it would stick at 3500mhz if I manually set the multiplier in the BIOS. Then I saw that my BIOS updated itself and decided to have another go. In the newest update Intel turbo and EIST have been added so i tried resetting my BIOS so its set to auto (dynamic) clock speed and still no change, until I disable Intel speedstep!

it downclocks to 800Mhz at idle

when you put it under load it should go back to 3.9GHz

run intel XTU and see what clock speed it gets to

Well I haven't experienced this with my 4690k because it is overclocked. Did this happen before or did it just randomly start happening.

Test it under load,

I have configured my cpu to run at 4.5Ghz/1.23v at max load and when at idel or low usage it will go down to 800mhz/0.7v

Unless stress test prove it wrong, that is extremely normal. This is because Haswell has a very low sleep state

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