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PC Processors

Alita
Adept I

Need configuration help with AMD Ryzen 9 7950X

Hello,

I recently purchased a system with AMD Ryzen 9 7950X 16-Core Processor and I'm looking into ways to configure the fan control to have a small fan noise whenever is possible, without affecting the CPU long term.

The first thing that I did was to set the processor control mode to ECO and the curve optimizer mode to false, I don't know how much this configuration will impact the performance of the CPU, but I found it useful to decrease the temperature in a range between 40-60c. Initially, before the change, I got scared when I notice that in the default control mode, the temperature was rising to 95c at full CPU load and I tough my CPU will burn in a couple of weeks.

Finally, I installed a GCC fan control application, where I configured each fan that is available on my PC, and I'm looking into ways to configure it in an optimal way.

I have no experience with those modern computers, any help from somebody with a similar CPU will be very appreciated.

Thanks

 

2 Solutions
johnnyenglish
Big Boss

Hi, You can visit my thread "RAPHAEL", I'm constantly tweaking the 7950X as I wish to learn how much can I squeeze without too much pressure on the 240 Radiator AIO.

The best I got so far with a 36K (almost 37K) on cinebench, which is tad less than completely stock. This is the combo of tweaks:

EcoMode 105
Curve Optimizer all core -6
vCore Offset -0.08v
vSoC 1.2v
VDDIO MC 1.2v

All CCD1 cores will still push past 5.7Ghz and the max temp while rendering on DaVinci Resolve will be 78ºC Peak. Gaming at 60ºC and that is super comfy.

I can do better but I can't seem to get -15 Curve Optimizer stable on All Core so I'll have to to a per core Curve Optimizer. If I can go -20 on some and -10 on others I may be able to push past 38K on Cinebench

Beware, Curve Optimizer can put your VRM's to the test

johnnyenglish_3-1685568391203.png

 



Good Luck

 

johnnyenglish_1-1685567983085.png

johnnyenglish_2-1685568033496.png

 

The Englishman

View solution in original post

Technically, it is in Ryzen Master.  All the 105W EcoMode setting does is drop the Ryzen 9 7900X from a 170W TDP mode to the 105W TDP.

TDPs themselves are defined by the PPT (Package Power in Watts), TDC (Thermal Design Current in Amps) and EDC (Electrical Design Current in Amps).

Together, those three values form the limits your processor will not exceed when boosting (as well as temperature).

 

For a 170W TDP processor, those limits are 230W PPT, 160A TDC and 225A EDC.   For a 105W processor, you have 142W PPT, 110A TDC and 170A EDC.  So to replicate the 105W Eco mode in Ryzen master, just create a profile and turn on Precision Boost Overdrive and manually set the PPT, TDC, EDC limits to 142, 110 and 170 respectively.  When you activate that profile you will be in 105W Eco mode.

 

You can also set those values to 88W, 75A and 150A for a 65W TDP mode if you wanted to test that.

View solution in original post

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8 Replies
johnnyenglish
Big Boss

Hi, You can visit my thread "RAPHAEL", I'm constantly tweaking the 7950X as I wish to learn how much can I squeeze without too much pressure on the 240 Radiator AIO.

The best I got so far with a 36K (almost 37K) on cinebench, which is tad less than completely stock. This is the combo of tweaks:

EcoMode 105
Curve Optimizer all core -6
vCore Offset -0.08v
vSoC 1.2v
VDDIO MC 1.2v

All CCD1 cores will still push past 5.7Ghz and the max temp while rendering on DaVinci Resolve will be 78ºC Peak. Gaming at 60ºC and that is super comfy.

I can do better but I can't seem to get -15 Curve Optimizer stable on All Core so I'll have to to a per core Curve Optimizer. If I can go -20 on some and -10 on others I may be able to push past 38K on Cinebench

Beware, Curve Optimizer can put your VRM's to the test

johnnyenglish_3-1685568391203.png

 



Good Luck

 

johnnyenglish_1-1685567983085.png

johnnyenglish_2-1685568033496.png

 

The Englishman

Hi,

Is there a way to set all of those from AMD Rayzen Master or do I have to do them from BIOS?

Can you please share your fan control settings as well? The default settings is creating noise and I could not find an optimal way to set this up.

Thanks

I always use the Motherboard bios to adjust fan curves for case fans and the CPU cooler and GCC for my Gigabyte GPU. Highly recommend AMD's Adrenaline Software to customize clocks and monitor temperatures. The Ancient Gameplays channel on YouTube.com has a lot of great information on using Adrenaline and guidance on driver installs and settings. https://youtu.be/oltTkFODy8w is a good video to start with adjusting settings.

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You can do the Curve Optimizer on Ryzen Master, its much more intuitive than some BIOS, but some settings you will only find in BIOS.

(Example Given)
Fan curve is very specific, You won't get good results from my fan curve if you use Corsair ML while I'm on Noctua's AF and iPPC. The RPM range/noise is different

I do my fan curves in ASUS proprietary Armoury Crate as they are tied to the BIOS.

How I do my fan curve?

Positive Pressure at idle and the more load the CPU gets, changes to Negative Pressure.

INTAKE Noctua 2x 140mm NF14 Airflow at ranges of 400-600rpm

johnnyenglish_0-1685573277135.png

EXHAUST Noctua 1x 120 NF12 Airflow at 600-900rpm (need to lower it to 800)

johnnyenglish_1-1685573315446.png

RADIATOR Noctua 2x 120 iPPC for Static Pressure at 400-1000rpm

The Englishman
0 Likes

Thank you for all the info, it will be great if AMD will implement 105w eco mode in AMD Ryzen Master and allow more testing to be done with a few clicks, instead of going to BIOS and changing the settings.

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Technically, it is in Ryzen Master.  All the 105W EcoMode setting does is drop the Ryzen 9 7900X from a 170W TDP mode to the 105W TDP.

TDPs themselves are defined by the PPT (Package Power in Watts), TDC (Thermal Design Current in Amps) and EDC (Electrical Design Current in Amps).

Together, those three values form the limits your processor will not exceed when boosting (as well as temperature).

 

For a 170W TDP processor, those limits are 230W PPT, 160A TDC and 225A EDC.   For a 105W processor, you have 142W PPT, 110A TDC and 170A EDC.  So to replicate the 105W Eco mode in Ryzen master, just create a profile and turn on Precision Boost Overdrive and manually set the PPT, TDC, EDC limits to 142, 110 and 170 respectively.  When you activate that profile you will be in 105W Eco mode.

 

You can also set those values to 88W, 75A and 150A for a 65W TDP mode if you wanted to test that.

0 Likes

Well now I can't help myself, I find this topic irresistible.

 

AMD gives out defined PPT/TDC/EDC for four different TDPs (170W, 120W, 105W, and 65W).

That is interesting because you can use those values to create linear expressions for TDP vs PPT, vs TDC and vs EDC.  Those expressions will then allow you to calculate what PPT/TDC/EDC would be for any TDP. 

 

So say you don't want to run at 95C and a 170W, but 105WTDP is maybe a bit to low?  Processor maxing out below 70C or something like that?  You can try a 115W TDP or 130W, whatever you like until you have the optimum performance for the noise level you want from your fan curve and temps on the CPU.  Just edit the PPT/TDC/EDC settings in your Ryzen Master profile following the table below to define your own ECO mode.

 

TDP (Watts)PPT (Watts)TDC (Amps)EDC (Amps)
658876145
668977146
679178147
689278147
699379148
709580149
719681150
729782150
739982151
7410083152
7510184152
7610385153
7710486154
7810686155
7910787155
8010888156
8111089157
8211190157
8311290158
8411491159
8511592160
8611693160
8711894161
8811995162
8912095162
9012296163
9112397164
9212598165
9312699165
9412799166
95129100167
96130101168
97131102168
98133103169
99134103170
100135104170
101137105171
102138106172
103139107173
104141107173
105142108174
106143109175
107145110175
108146111176
109148111177
110149112178
111150113178
112152114179
113153115180
114154115181
115156116181
116157117182
117158118183
118160119183
119161119184
120162120185
121164121186
122165122186
123166123187
124168123188
125169124188
126171125189
127172126190
128173127191
129175128191
130176128192
131177129193
132179130194
133180131194
134181132195
135183132196
136184133196
137185134197
138187135198
139188136199
140189136199
141191137200
142192138201
143194139201
144195140202
145196140203
146198141204
147199142204
148200143205
149202144206
150203144206
151204145207
152206146208
153207147209
154208148209
155210148210
156211149211
157212150212
158214151212
159215152213
160217152214
161218153214
162219154215
163221155216
164222156217
165223157217
166225157218
167226158219
168227159219
169229160220
170230161221
171231161222
172233162222
173234163223
174235164224
175237165225
176238165225
177240166226
178241167227
179242168227
180244169228
181245169229
182246170230
183248171230
184249172231
185250173232
186252173232
187253174233
188254175234
189256176235
190257177235
191258177236
192260178237
193261179237
194263180238
195264181239
196265181240
197267182240
198268183241
199269184242
200271185243

 

These are very helpful. 

The Englishman
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