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*** AMD "Zen 4" thread (inc AM5/APU discussion) ***

Cant recall if this is normal as not had a PC for ages but certain things spike the cpu up to like 60/70 and my fans ramp up. An example is the colour picker thing on the Aura sync. I have tried to mitigate it by setting the fan curve to stay at 40% until like 70
 
Noxia said:
Cant recall if this is normal as not had a PC for ages but certain things spike the cpu up to like 60/70 and my fans ramp up. An example is the colour picker thing on the Aura sync. I have tried to mitigate it by setting the fan curve to stay at 40% until like 70
Click to expand...

Is the cpu water cooled or air cooled?

If it's water, you can just leave the fan at 40% until like 85c or some temp you believe it won't reach but is also well enough under throttling that it never affects performance.

That's the nice thing with water cooling, small cpu usage spikes don't create huge increases in temps very fast and temp variance from low rpm to high rpm on fan doesn't make huge temp difference. You have less wiggle room on air because the temp will spike up faster and the fan rpm is critical to the temp.
 
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Grim5 said:
Is the cpu water cooled or air cooled?

If it's water, you can just leave the fan at 40% until like 85c or some temp you believe it won't reach but is also well enough under throttling that it never affects performance.

That's the nice thing with water cooling, small cpu usage spikes don't create huge increases in temps very fast and temp variance from low rpm to high rpm on fan doesn't make huge temp difference. You have less wiggle room on air because the temp will spike up faster and the fan rpm is critical to the temp.
Click to expand...

Just using a standard 360 AIO.
 
Couldn't get 6400 MT/s stable, not sure setting the SOC voltage to 1.4v is a good idea, weird stuff happens.

Testing CL28 again now, fairly sure that will work.
 
I think the 6000 MT/s XMP profile sets the SOC voltage higher than 1.2v on my motherboard.

Seems to be running alright at 1.3v at the moment. I'll see if I can lower it later.
 
It looks like my RAM with XMP profile 1 enabled is only stable with the DRAM voltages are set to 1.45v and the SOC voltage is set to 1.3v.

If I lower the SOC voltage to 1.25v (default for the XMP profile on my motherboard), I get rounding errors in P95 again.

I've read that SOC voltage needs to be 100mv lower than the DRAM voltage (or lower).
 
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I think I might be able to run the infinity fabric at 2133mhz without errors (still testing). I found this on a techspot review of the 7600X:

RAM-Hitman-p.webp


Has anyone noticed an improvement in performance when overclocking the infinity fabric clock (above 2000mhz)?

Is a higher infinity fabric clock always better for performance?

EDIT - Fclk set to 2200Mhz wouldn't load my mouse cursor in the BIOS, so I would advise against setting it that high.
 
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I did some pretty unscientific testing as I just followed like one video.

Cinebench R23 Multicore

Eco mode 105:
AIO Fans 40% = 19295 | AIO Fans 60% = 19392 | AIO Fans 100% = 19545

Stock:
AIO Fans 60% = 19342

-For the below, AIO is set to 40% which is inaudable.

-30 All curve = 19877

-30 All Curve, Thermal Limit 85 degrees = 20314

-30 All Curve, PPT 85w = 18973
-30 all Curve, PPT 95w = 19427

I have decided to stick with the PPT 95, my cpu won't go over 70 degrees with this and it's not much of a performance drop, average clock speed was 5050. Silence is golden.
 
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Does anyone know much about the AGESA versions for Zen 4?

Is there going to be another AGESA version soon for AM5 boards?

And if so, do motherboard manufacturers usually try to release an updated BIOS version as soon as possible?
 
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g67575 said:
What does the eco mode do exactly?

Is it basically a TDP limit, or something different?
Click to expand...

According to GN (video):

It is equivalent to a pre-set for power and current limits and changes the following:

PPT - package power tracking - the max power allowed to be drawn through the socket
TDC - thermal design current - max current (amps) delivered within thermal limits
EDC - electrical design current - max current (amps) the voltage regulators can deliver in a peak or spike

Example for AM5 (65 watt cTDP from the drop down):
65 watt cTDP = 88W PPT, 75A TDC and 150A EDC

I think PBO(2?) then manages the clocks and volts to stay within those limits.
 
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There seems to be a really bad bug on ASRock BIOSes for AM5.

The High Voltage mode for the DRAM causes bootup to fail, after fully shutting a system down.

I can usually get around it by turning off my power supply for 30 seconds or so, then powering on, then it eventually boots up.

It doesn't occur for the other DRAM voltage modes, which allow upto 1.4v to be set for the DRAM voltages.

I hope they can address the BIOS issues soon, because I keep finding more problems.
 
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g67575 said:
Does anyone know much about the AGESA versions for Zen 4?

Is there going to be another AGESA version soon for AM5 boards?

And if so, do motherboard manufacturers usually try to release an updated BIOS version as soon as possible?
Click to expand...

AGESA versions are an ongoing thing for AMD, they continue all through a products lifecycle.
I'd expect an AGESA update in Q1 next year for Ryzen 7xxx.
Product launches for Q3 and Q4 this year have been a mad scramble for all AIB partners for all the new PC products that have appeared on the market.
 
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