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RTX 3090 Boost Clock

They do but there is a relationship with voltage as well - if the voltage changes the frequency may change and it will then be going up and down 15MHz from that frequency.
Exactly, so any frequencies should always be divisible by 15, right? Some are quoting that their card sits at a frequency that isn’t a multiple of 15 which has me confused.
 
Exactly, so any frequencies should always be divisible by 15, right? Some are quoting that their card sits at a frequency that isn’t a multiple of 15 which has me confused.

Not sure on that - I think there is a set frequency/voltage relationship table where the base value isn't necessarily divisible by 15 but each increment above or below it will be a step of 15. I'll have to have a look.
 
The card can float in between clocks.
Which are 15mhz apart.

It is to do with the voltage/frequency curve - clock changes due to user offset, thermals, etc. will always be in exact 15MHz steps - but the actual base frequency at any given voltage level can be different.
 
48c
Palit ref 3090
sits around 2040mhz but i've had it as high as 2100mhz locked on some games like no mans sky, mafia 2 remastered etc with an overclock of +150 +800.

There is a jumping point between 48c and 50c where the clocks will fluctuate quite abit.
 
3090FE stock out the box see it peak around 1995 Mhz then drop to around 1965 Mhz as it warms up. Temp wise it tops out around 68 degrees or so with fan profile at 43% so very quiet FE cooler.

Day to day, I have it at 2100 Mhz and +800Mhz on memory profile with a slight undervolt using the voltage curve. Temp wise is the same as above amusingly as its set to use less voltage then at stock. Card can peek at 2205 Mhz and I have a saved at 2175 Mhz but see no difference really between 2100mhz and 2175mhz.

Will hold this in everything bar Cyberpunk 2077 with RT on and benchmarks. This is partly as with CP2077 RT / benchmarks, game will smash into the 400w power limit. So there using a undervolt / overclock works best I find.

Is it just the 3090 that does that? My only experience is my 3070 so it might be different.

Normal of all of Ampere, 15mhz increments that is. Though some other people seem to mention in between numbers but not seen that on Ampere GPUs I have used and never seen in between steps. Can select in between steps in likes of MSI AB voltage curve, but it rounds up or down in my experience.
 
Normal of all of Ampere, 15mhz increments that is. Though some other people seem to mention in between numbers but not seen that on Ampere GPUs I have used and never seen in between steps. Can select in between steps in likes of MSI AB voltage curve, but it rounds up or down in my experience.
Yeah, that’s why I asked. I’ve only ever seen 15mhz movements where the total frequency is also divisible by 15.
 
I had no idea it was now 15mhz as it was 13mhz on the older cards right up to at least 1000 series )I had a 1080Ti & a Titan Xp 2017), cannot comment on the 2000 series.
 
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I had no idea it was now 15mhz as it was 13mhz on older cards right up to at least 1000 series I had 1080Ti & Titan Xp 2017), cannot comment on the2000 series.

Turing also moved in 15mhz increments. Though you are correct, pascal was 13mhz steps, except for one odd I see at 2100 Mhz which is 12mhz step over 2088 Mhz, the next step down. Maby Nvidia wanted a round number at that one :p
 
tuf oc stock, heaven bench says 2100mhz but not sure if that's accurate. never seen temps go above 65c

Built in numbers in haven and valley on right are misleading. Seems they read the boost table rather then actual clock speed. Will want to use MSI AB or GPU-Z to see actual clock speed.
 
Yeah Heaven's number isn't right - it shows the boost and/or your offset but even then doesn't always get it right - I've seen it reading between 2100 and 2300 depending on settings I use even when not actually overclocking.
 
Yeah Heaven's number isn't right - it shows the boost and/or your offset but even then doesn't always get it right - I've seen it reading between 2100 and 2300 depending on settings I use even when not actually overclocking.

I just tried it now and it's showing 2200mhz locked (3090 strix) which is way too high, the card has never even gone above 2115mhz and it can't hold more than 2050mhz at full load and once the heat picks up it drops further to 2000mhz at full load after extended play

I think the 2200mhz number might be the maximum target clock from the voltage curve - but it's not possible to actually reach that number if your power limit is not high enough and temps low enough. I believe my card could actually reach 2200mhz once I unlock the power limit to 480w and it goes under water.
 
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