i5-4690, possibility of working around EDP Current Limit?

[Brickery]

Hi all, am new to the forums. Have been looking at the forums as a visitor for a while now, but decided to make my own post since I didn't really see this question asked.

I have a Z87 chipset motherboard with a i5-4690. The Asus board is running on the latest BIOS v2103, with IME on the BIOS v9.0.0.1287 (if that's relevant, because I had to go through another whole set of loops to get my 4690 to post just last week). I have not done any modifications to the BCLK though I might try later on.

In Realbench, my maximum temps are about 70C running at 3.7GHz, with a package power of about 35-42W. However, in Cine, my max temps are only about 65C, but the clock speed is 3.5GHz on all cores, with a package power of also about 37-39W. When opening up the limits screen EDP Current under Core is the only thing that is highlighted in red, and it stays in red for the whole duration of the Cinebench test. The moment the test stops, EDP Current sometimes flashes in red and goes back to yellow, and even sometimes completely disappears, but it does not stay illuminated in red, and the CPU looks like it is quite happy going back up to 3.7-3.9GHz boost speeds.

Spoiler: Cinebench

Spoiler: Realbench

**Note: HWINFO also shows Max Turbo limit; understandable since 3.7GHz is the all-core turbo limit

Using Throttlestop, I have already undervolted my CPU Core and Cache by an offset of -113mV, which appears to be stable in Cinebench and Realbench; haven't had any BSODs related to that so far. I then disabled and locked the turbo power limits and set them to 84W and 95W respectively (for comparison, my max package power is about 43W running 4 cores @ 3.7GHz in Realbench, so PL1/PL2 throttling isn't an issue.) My PP0 current limit is about 130A. IccMax is grayed out, which I think could be because Haswell doesn't support it (though this is a Haswell Refresh CPU, not sure about that). VID fluctuates around 1.00V, with min 0.918V and max 1.140V; Vcore min 0.512V, max 1.14V same as VID.

Would appreciate your help very much, thank you!

 

[Brickery]

bump

 

[unclewebb]

When HWiNFO and ThrottleStop are running at the same time, HWiNFO is constantly clearing the Limit Reasons data out of the CPU. Use one program or the other to monitor the Limit Reasons data but do not run both programs at the same time.

Not sure what motherboard model you have. Some Asus Z87 motherboards will have a Digi+ section in the BIOS. Under CPU Power look for CPU Current Capability. Your motherboard seems to be setting one of the current limits too low which is triggering throttling. On a desktop board I would set the CPU voltages in the BIOS. Your CPU is not running hot so do you really need to be under volting the CPU?

Usually setting the PP0 Current Limit in ThrottleStop fixes this type of throttling. Try setting the PP0 Current Limit sky high to 1023 just to make sure it is not the problem. If that does not fix things, search for a current limit option in your BIOS.

 

[Brickery]

Thanks for the reply! I did the change in the BIOS instead of ThrottleStop and it worked, but I have checked that changing the current limit in ThrottleStop also has the same effect.