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autaztic
Adept I

5700X3D - True PPT, TDC, EDC ???

These specifications are not listed on the AMD website and appear to be illusive. The limits for the 5800X3D are 142w PPT, 95a TDC, 140a EDC. This is also what shows up in Hwinfo64 as the "Fused" limits for my 5700X3D but I have found that these are not accurate and/or must be being limited elsewhere. I have found that the EDC limit is actually 105a, leading me to believe the actual limits of the 5700X3D to be closer to 105w/75a/105a PPT/TDC/EDC. Here is why.

When I run CinebenchR23 with NO CO offset, my clock speeds will drop from the 4050mhz into the 3900s due to the EDC hitting 105a. When I apply a minimum negative all-core offset of -12 I am able to hold the 4050mhz indefinitely. Why? Because my EDC is staying just below 105a due to the negative offset. There is no other explanation, temps don't even hit 70c and it has all the power it needs. So when Hwinfo64 shows EDC topping out at 75% of the limit it is actually at 100% being it isn't 140a, it is 105a. 105 is 75% of 140. Also, whether I select Auto, Motherboard, or Manually set 142/95/140 OR 105/95/105, my benchmark results are the same. It's not until I manually go below 105/95/105 that my results begin to change.

So where is it limited? If it is fused like a 5800X3D than it is being limited elsewhere, like firmware/microcode. Unless Hwinfo64 is wrong?

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misterj
Big Boss

autaztic, AMD provides and supports Ryzen Master (RM) and I am certainly not going to answer questions about HWin... Ask them. Ask AMD here. John.

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