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bubulol

macrumors 6502a
Original poster
Mar 7, 2013
967
273
Contrary to the belief of powerful PC build needs to be overclocked
Undervolting ryzen and Nvidia RTX will lower heat and temperatures, watts consumation
The loss of performance is barely noticeable
I did undervolted my Ryzen 3600, it consumes less power/watts, little bit cooler and almost same performance as stock
I will most likely undervolt my RTX 3060TI as well, if you got more powerful RTX such as 3080/3090, its even better
Did you guys ever think to undervolt your CPU/GPU?

Thanks
 

Erehy Dobon

Suspended
Feb 16, 2018
2,161
2,017
No service
I've looked into it but I don't see the practicality in my instance since my gaming build is very well cooled. Thermal limits are not a concern.

My CPU (Ryzen 5 5600X, 65W TDP, stock speeds) maxes out at 73 °C during a CPU-Z stress test. In real life, it never gets loads like that, even during a Handbrake encode. During gaming, the CPU sees even less stress and probably hovers between 55-65 °C. It idles around 34-35 °C.

Most of my gaming is GPU bound anyhow so overclocking the CPU doesn't really do anything for most of the games I play.

My GPU (Nvidia GeForce RTX 2070 SUPER FE) is even frostier. It idles at 24 °C and maxes out at 42 °C (with ~8-9% overclock) during a Unigine Heaven loop. Again, that's more than real-world usage which is probably 38-40 °C. It is a heavily modded card with an NZXT Kraken G12 bracket paired with an EVGA CL24 240mm AIO cooler.

One thing I did do is uncap some of the CPU power limits on the motherboard. TDC has been bumped from 60 A to 75 A. EDC has been bumped from 90 A to 120 A. PPT has been bumped from 88 W to 105 W. Naturally this also helps in non-gaming usage.

The CPU cooler (a middle-tier 120mm AIO CLC from EVGA -- nothing exotic) can handle it. In fact the whole case stays fairly cool and maxes out around 36 °C internally per the mobo's SYSTEM temperature sensor. Likewise the two m.2 drives stay quite cool.
 
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bubulol

macrumors 6502a
Original poster
Mar 7, 2013
967
273
When i did undervolt ryzen 3600
  • Lost about 4/5 degrees Celsius on average
  • Lost 10-15 pts on Cinebench which is meaningless
RTX 3000 series are known for consuming watts more than needed
That's why undervolting RTX 3000 series becomes popular
All i can say, undervolting doesnt mean you will loss in performance (its virtually same performance) but you will get better heat dissipation, less power consumption and cooler temperatures
 

LIVEFRMNYC

macrumors G3
Oct 27, 2009
8,876
10,982
Contrary to the belief of powerful PC build needs to be overclocked
Undervolting ryzen and Nvidia RTX will lower heat and temperatures, watts consumation
The loss of performance is barely noticeable
I did undervolted my Ryzen 3600, it consumes less power/watts, little bit cooler and almost same performance as stock
I will most likely undervolt my RTX 3060TI as well, if you got more powerful RTX such as 3080/3090, its even better
Did you guys ever think to undervolt your CPU/GPU?

Thanks

I made a custom undervolted preset in Ryzen Master for my 3950x. This way it's on manual demand instead of always set on the bios.
 

bubulol

macrumors 6502a
Original poster
Mar 7, 2013
967
273
I have made an undervolt for 5600x with PBO2
Gaining performances (Cinebench): about 150 pts in average
Losing only 1 degrees (even less)
For 3600, i have undervolted -100 mv, lost 5-6 degrees and same performances on cinebench
Undervolt may vary from units and different ryzen generation as you can see above
 
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