Wednesday, September 14th 2022
AMD Ryzen 9 7950X Boosts to 5.85 GHz Only if You Can Keep it Under 50°C
AMD's upcoming Ryzen 9 7950X 16-core processor can boost at speeds of up to 5.85 GHz, even though its maximum boost frequency in the specs is 5.70 GHz. The processor needs temperatures below 50°C to boost up to 5.85 GHz. Above these temperatures, it will only boost up to the 5.70 GHz on the tin. There are four frequencies to keep in mind about the 7950X. First is the base frequency, of 4.50 GHz. Next up, is the all-core boost frequency, of 5.10 GHz. This is the frequency at which the processor can run all 16 of its cores, provided it stays away from the 95°C temperature throttle. 5.70 GHz is the maximum boost frequency you'll get on "some" of the cores if the temperature is maintained between 50-95°C. If you're able to keep temperature below 50°C, the processor can boost up to 5.85 GHz. AMD refers to 5.85 GHz as the "peak clock."
To be able to hit peak clocks, you should ideally need some serious cooling, such as a 360 mm DIY liquid cooling setup, or a 420 mm AIO CLC; however in some circumstances, such as the system starting up from a cold-boot in a room with low ambient temperatures, the processor should hit peak clocks as it's approaching the 50°C-mark. AMD is making no pretenses that the 7950X is a high-power chip. Its TDP is rated at 170 W, and its PPT (package power tracking) limit at 230 W. By setting the TDP at 170 W from the get go, AMD is hinting that one can forget about aftermarket tower-type air-cooling, and head straight to AIO liquid cooling.
Source:
Wccftech
To be able to hit peak clocks, you should ideally need some serious cooling, such as a 360 mm DIY liquid cooling setup, or a 420 mm AIO CLC; however in some circumstances, such as the system starting up from a cold-boot in a room with low ambient temperatures, the processor should hit peak clocks as it's approaching the 50°C-mark. AMD is making no pretenses that the 7950X is a high-power chip. Its TDP is rated at 170 W, and its PPT (package power tracking) limit at 230 W. By setting the TDP at 170 W from the get go, AMD is hinting that one can forget about aftermarket tower-type air-cooling, and head straight to AIO liquid cooling.
75 Comments on AMD Ryzen 9 7950X Boosts to 5.85 GHz Only if You Can Keep it Under 50°C
1: good mounting pressure. A washer really helps. But i'm not sure about long term effects for motherboard or socket.
2: good thermal paste. There's really good ones out there, my choice was MX-5
3: push pull fan configuration on a 360mm rad with fairly aggressive fan-speed
4: negative voltage offset; basicly voltage tuning. The less you need the less heat.
I'm sure you can do even more, such as lapping or even IHS removal but those obviously jack your warranty.
Don't worry about idle temps, either. These CPU cores have an incredibly small surface area, which means they cannot transfer the minimal heat that they make at idle to the IHS and your cooler effectively. 40 °C idle with any kind of cooling is normal.
Oh, and welcome to TPU! :)1: Unnecessary. Coolers and coldplates are designed with the optimal mounting pressure in mind.
2: MX-5 is a hit-and-miss. Some batches have terrible separation issues. Not recommended. MX-4 is much better and more reliable. If you have money to spend, TG Kryonaut is even better.
3: Push-pull isn't necessary. A good fan curve does the job, although even that only saves you a couple of degrees max.
4: Agreed, though one really needs to know what they're doing. I think, cooling your CPU with 5 radiators is overkill enough not to warrant any need for voltage tuning.
MX5 is tricky, because you need to seperate the "oil stuff" from the real paste. The oil is just in there to keep it wet.
Push pull does work; on avg 1 to 3 degree. For something like PBO 1 to 3 degree adds up.
As of the MX5 - really it's the oil and you want the paste to spread in a equal matter onto the IHS. Once ive done it right the temperatures where amazing for it's product.
They do that because of prolonged storage. So yeah.
After checking for local prices, I see that the MX-5 has been discontinued in favour of the MX-6. I wonder why. ;)
Anyway... enough about thermal pastes. :)
There's the proof
use HWinfo
Have no idea how it's on pbo not overclocked
Besides, even if I could get an extra 100 MHz out of it at the cost of increased noise, I wouldn't. It's not worth it (I hate noise).
Both with XFR off (as its been run on server type workloads).
The 5600G has much better IPC an extra 100mhz and runs cooler. :)
However the 5600G does have after market thermal compound whilst the 2600X used what was already on the base of the heatsink.