PC Processors

[Karlo092]

Good day,

I'm no expert, so bear with me here.

So a few days ago I've switched from 12400F to 9600x.

During my use 12400F was running idle in the 30's, and not even hitting 60c under load.

After the switch, I'm seeing around 45c average on idle and 75c under load. To my understanding this is well within normal operating temperatures.

However, I wanted to ask - what cooling solution would I require to achieve idle temps in the 30's and around 60c under load? I do not mind replacing the case.

Or maybe I have applied thermal paste poorly? Though the temperatures seem stable.

12400F was cooled with AK500 and whatever deep cool thermal paste came with it.

9600x is being cooled with AK500 and MX6. There's 2 intake and 1 exhaust p12's pwm pst, in the case. B850 Pro RS. Case fans work at the same speed as cpu fan, blasting at 100% during stress test.

I have included said temps below.

idlestress test

[FunkZ]

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@Karlo092 wrote:

I'm seeing around 45c average on idle and 75c under load. To my understanding this is well within normal operating temperatures.

However, I wanted to ask - what cooling solution would I require to achieve idle temps in the 30's and around 60c under load? I do not mind replacing the case.

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As you have stated, 45°C Idle / 75°C Load are within normal operating temperatures.

AMD uses 3 "limits" to determine how high clock frequency can boost.

Max boost, which is up to 5.4GHz (this is typically 50MHz higher or up to ~5450MHz)

Max PPT or package power, which could be 76W, 88W or 142W

Max temp, which is up to 95°C

As long as load operation is under all 3 limits, the motherboard will continue to add voltage and increase clock frequency until 1 of the 3 limits is hit. This is normal Precision Boost operation.

On a single-core workload typically the frequency limit is reached first.

On a multi-core workload it could be PPT limit or temp limit reached first, depending on cooling.

With the DeepCool AK500 you are hitting PPT limit first, as your temps are all sub-95°C.

As to which PPT limit is used, in Sept 2024 AGESA release 1.2.0.2 the TDP of the 9600X is configurable, meaning it could be set to 65W TDP or 105W TDP, hence the PPT limit could be 76W, 88W or 142W depending on the BIOS version and PBO settings you are running.

[BigAl01]

How do you know so much about AMD processors?  

[FunkZ]

The official AMD spec sheet lists the 9600X as a 65W TDP processor.

https://www.amd.com/en/products/processors/desktops/ryzen/9000-series/amd-ryzen-5-9600x.html#product...

However it was sometime after initial launch I believe that cTDP or configurableTDP was implemented as detailed on TechPowerUp.

https://www.techpowerup.com/cpu-specs/ryzen-5-9600x.c3652

In September 2024 AMD released AGESA PI 1.2.0.2 which enables an extended configurable power allowance under the original processor warranty. With the increased cTDP profile AMD claims as much as a 10% increase in total performance.¹

I believe AMD did this after the initial review/response to the 9000 series chips was kinda "meh" compared to the 7000 series. (9800X3D excluded) Efficiency was up, power utilization was down, but the overall performance of the 9000 series compared to the 7000 series was not all that much better generationally.

The 9800X3D is excluded as major improvements on that chip over 7800X3D due to the cache placement and overclockability.