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Sure. Various forums corroborate the reducing the Ryzen 7000 series at 65 TDP is often a less than 10% decrease in performance. Also keep in mind that "perfor
by sliken 4y ago
Sure. Various forums corroborate the reducing the Ryzen 7000 series at 65 TDP is often a less than 10% decrease in performance.
Also keep in mind that "performance mode" on Intel can significantly increase the default 253 watt TDP. Anandtech reviews of the i9-13900k hit 380 watts I believe.
So sure there's chip to chip variation, but generally the AMD chips are more power efficient and have much lower penalties for reducing the TDP.
- inawarminister 4y agoDo you know how to undervolt laptop Ryzens? I'm really interested if we can increase the battery life by another 30-40% or so
- scheme271 4y agoThe easiest way is to go to the bios or cpu settings and change the precision optimizer so that you have a negative pbo setting. That'll reduce the stock voltage at a given frequency. It'll also potentially speed your chip up since this lets the chip boost to higher frequencies at a given power level. I think the lowest you can go is -30, but try -20 or so and see if your system is stable before trying lower values.
- mtlmtlmtlmtl 4y agoI'm not sure whether I've won the lottery or Intel's software is unreliable. I've been playing around with the 13900K's settings and so far I've managed to get it down to a stable 210W TDP(according to XTU under stress testing. That's with a 0.110V undervolt(likely could do more) and the P-core turbo multipliers tapering down to 50 with all cores active from 57 with 1 core active. I've yet to mess with the E-cores though; could probably shave off some more perf/W still.
- sagarm 4y agoI think managing a 100mV undervolt is pretty common for the 13900K. That's what I have as well, with a power limit of 200W. The penalty in cinebench is only ~5% despite the 20% reduction in power.