TDP adjustment

[Passi]

Quick question, I have a AMD Ryzen 5 5600X that's cooled by a AIO so it stays chill, what's the maximum power and time on them for TDP (PL1/2) 

because it clocks down real quick to 47-50w

Or can I just set it to full send all of the time?

It stays cool at 58°C to 62°C 

[DoctorNick]

44 minutes ago, Passi said:

Quick question, I have a AMD Ryzen 5 5600X that's cooled by a AIO so it stays chill, what's the maximum power and time on them for TDP (PL1/2) 

because it clocks down real quick to 47-50w

Or can I just set it to full send all of the time?

It stays cool at 58°C to 62°C 

Why would you limit it in any way? Just set PBO to advanced and enable curve optimizer, set to negative and set to the highest value possible (thats stable).

[podkall]

PBO is all you need, PBO with tasks as simple as opening/using a browser will make the CPU go fast.

 

Also 5600x most likely goes around 65-80W when all-core engaged.

[PDifolco]

Remove Power limits in BIOS and use PBO+CO

[keskparane]

I've only just started looking at TDP, W, T, etc. 
From what I understand it should stay at boost (if required) unless forced down for some reason. So you should first find the reason it's clocking down.

I've just started using OCCT. I'd run an extreme CPU test.

Watch for flags to see why it's throttling, both on the CPU and the motherboard (eg VRM MOS)

 

Also your 5600x has a TDP of 65W, so does my i7 8700, yet my i7 will sit around 111W in a stress test (I have good cooling). My VRM got to 85c before I decided to quit the test.

[Haswellx86]

Looks like you are running at stock. After whatever time you start the load the CPU cuts power, that is the turbo time period.

 

You need to enable Precision Boost Overdrive (PBO), or manually increase the power limits in your UEFI if it is supported.

[toasty99]

5 hours ago, keskparane said:

I've only just started looking at TDP, W, T, etc. 
From what I understand it should stay at boost (if required) unless forced down for some reason. So you should first find the reason it's clocking down.

I've just started using OCCT. I'd run an extreme CPU test.

Watch for flags to see why it's throttling, both on the CPU and the motherboard (eg VRM MOS)

 

Also your 5600x has a TDP of 65W, so does my i7 8700, yet my i7 will sit around 111W in a stress test (I have good cooling). My VRM got to 85c before I decided to quit the test.

TDP is meaningless and trying to compare it across generations, models, and different brands is really really meaningless. 

 

TDP is just whatever number someone at the marketing team pulls out of their ***. 

 

On the AMD side, "TDP" in recent years is what the CPU will consume out of the box without PBO enabled. Of course, you're leaving significant performance on the table by not enabling PBO and it's basically a one click overclock. 

 

On the Intel side, "TDP" is just a number they say and has been since around the 8th/9th Gen days with it getting progressively worse until that blew up in their face partially with the 13th/14th gen fiasco. Intel would say the TDP was "65w" because they'd make that PL2 (the limit after like 30 seconds of load) but in actuality it was boosting past 100w for the 30 seconds before. Then, they even got more bold in recent years and eventually had motherboards getting shipped with PL1 and PL2 being unlimited power. 

 

[keskparane]

2 hours ago, toasty99 said:

TDP is meaningless and trying to compare it across generations, models, and different brands is really really meaningless. 

 

TDP is just whatever number someone at the marketing team pulls out of their ***. 

 

On the AMD side, "TDP" in recent years is what the CPU will consume out of the box without PBO enabled. Of course, you're leaving significant performance on the table by not enabling PBO and it's basically a one click overclock. 

 

On the Intel side, "TDP" is just a number they say and has been since around the 8th/9th Gen days with it getting progressively worse until that blew up in their face partially with the 13th/14th gen fiasco. Intel would say the TDP was "65w" because they'd make that PL2 (the limit after like 30 seconds of load) but in actuality it was boosting past 100w for the 30 seconds before. Then, they even got more bold in recent years and eventually had motherboards getting shipped with PL1 and PL2 being unlimited power. 

 

How is TDP meaningless?

1/ It has a meaning.

2/ It has context with the OP.

3/ It can be used as a reference.

[toasty99]

On 10/14/2024 at 3:29 PM, keskparane said:

How is TDP meaningless?

1/ It has a meaning.

2/ It has context with the OP.

3/ It can be used as a reference.

1) It has no determined meaning. It's just a made up number that somebody in marketing decided.

 

2) It has no relevant context in this example. 

 

3) It can't be used as a reference because it's not a consistent measurement across brands/models/skus/generations/even in the same generation by the same brand!

 

To give some examples:

 

1. The Ryzen 7800x3d has a 120w TDP as stated by AMD. Now, in reality, that chip will only draw ~90w under full load as verified by multiple independent media outlets and even my own personal experience. It has a TDP of 120w, but only draws 90w at full load. That's a 30w difference, meaning the TDP is entirely meaningless. 

 

2. Conversely, the Ryzen 7700 in the same generation has a stated TDP of 65w. Now, out of the box with most motherboards it adheres to that limit. If you disable or raise the power limit, it will gladly use well over 95+ watts. So technically true, but really the "TDP" in this case is just acting as a power limit. 

 

3. An I9 14900k. This chip has a TDP of 125w. In the real world? A vast majority of motherboards shipped with unlimited power limits and this would suck down 300+ watts if the cooling was sufficient. Now with the recent stability issues, most of them have been dialed back to PL1=253w and PL2=253w out of the box, but that's still well beyond the 125w TDP. Again, it's entirely meaningless as the TDP is telling you nothing about the power being consumed. 

 

In theory TDP SHOULD have meaning, but currently it does not. Don't even get me started on GPUs, that's a whole other mess.

[Blue4130]

4 hours ago, toasty99 said:

1) It has no determined meaning. It's just a made up number that somebody in marketing decided.

 

2) It has no relevant context in this example. 

 

3) It can't be used as a reference because it's not a consistent measurement across brands/models/skus/generations/even in the same generation by the same brand!

 

To give some examples:

 

1. The Ryzen 7800x3d has a 120w TDP as stated by AMD. Now, in reality, that chip will only draw ~90w under full load as verified by multiple independent media outlets and even my own personal experience. It has a TDP of 120w, but only draws 90w at full load. That's a 30w difference, meaning the TDP is entirely meaningless. 

 

2. Conversely, the Ryzen 7700 in the same generation has a stated TDP of 65w. Now, out of the box with most motherboards it adheres to that limit. If you disable or raise the power limit, it will gladly use well over 95+ watts. So technically true, but really the "TDP" in this case is just acting as a power limit. 

 

3. An I9 14900k. This chip has a TDP of 125w. In the real world? A vast majority of motherboards shipped with unlimited power limits and this would suck down 300+ watts if the cooling was sufficient. Now with the recent stability issues, most of them have been dialed back to PL1=253w and PL2=253w out of the box, but that's still well beyond the 125w TDP. Again, it's entirely meaningless as the TDP is telling you nothing about the power being consumed. 

 

In theory TDP SHOULD have meaning, but currently it does not. Don't even get me started on GPUs, that's a whole other mess.

And to further this, look at the Ryzen 9000 launch. The TDP *was* 65W, but then people complained and moaned, suddenly the TDP was changed to 105w. The number is arbitrary and can be changed to whatever some engineer/marketing guy wants it to be.