Hey, I can't undervolt the way I want. The card always use 0.005V lower and lower clockspeed. For example; If I set 2800 MHz @0.9V, card works 2200-2250 MHz @0.895V under load. Power limit %111 and GPU fan fixed %50. Card temp never exceeds 50C. Could you help me? I tried different voltages and lower clockspeeds, its same.
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RTX 5080 Undervolt Problem
- Thread starter Queph
- Start date
Try just using the clock offset slider first before manually modifying the curve. See what happens with a simple +500 on the clock. It may be that your card is unstable at that clockspeed so knock it down until you reach stability.
Once you are stable then use the curve that afterburner has created and just move everything after your desired voltage down to cap it there.
Once you are stable then use the curve that afterburner has created and just move everything after your desired voltage down to cap it there.
(EDIT - got some of my numbers wrong below, updated....)
I've undervolted the 5080 and 5090 (and every gen I've had previously). The 50 series works differently and quite strangely compared to how it used to be. Long story short, what you 'punch in' as your desired clockspeed overclock and expect to get - you won't get by a chunk. Even if you're being conservative.
I'm guessing the OP is doing curve modding in Afterburner? I only do curve modding and in my experience you always get a clockspeed that's a certain % under what you 'set' on the 50 series. For example, on my 5090 my daily profile curve in Afterburner is a nice low 0.85v with the peak clock speed 'set' to 2242mhz. In reality when gaming this will run at ~100-150Mhz lower than this though depending on core load.
My next profile is 0.875v at 2572Mhz. Again This will run at ~100-150Mhz lower when gaming. My 0.90v profile on my 5090 is 'set' at 2917Mhz, and this drops to ~2600-2700Mhz under load. And so on.
It is silicon lottery dependent somewhat, but if you're setting the peak clocks to run at 2800Mhz and 0.9v and only getting 2200-2250Mhz under load/ gaming, that is a big drop and doesn't sound right, especially as the 5080 is a 'better' overclocker/ undervolter than the 5090 in my experience and from what I've read. You also don't need to mess with the power limit setting - it has no effect as far as I'm aware when specifically curve modding.
I've undervolted the 5080 and 5090 (and every gen I've had previously). The 50 series works differently and quite strangely compared to how it used to be. Long story short, what you 'punch in' as your desired clockspeed overclock and expect to get - you won't get by a chunk. Even if you're being conservative.
I'm guessing the OP is doing curve modding in Afterburner? I only do curve modding and in my experience you always get a clockspeed that's a certain % under what you 'set' on the 50 series. For example, on my 5090 my daily profile curve in Afterburner is a nice low 0.85v with the peak clock speed 'set' to 2242mhz. In reality when gaming this will run at ~100-150Mhz lower than this though depending on core load.
My next profile is 0.875v at 2572Mhz. Again This will run at ~100-150Mhz lower when gaming. My 0.90v profile on my 5090 is 'set' at 2917Mhz, and this drops to ~2600-2700Mhz under load. And so on.
It is silicon lottery dependent somewhat, but if you're setting the peak clocks to run at 2800Mhz and 0.9v and only getting 2200-2250Mhz under load/ gaming, that is a big drop and doesn't sound right, especially as the 5080 is a 'better' overclocker/ undervolter than the 5090 in my experience and from what I've read. You also don't need to mess with the power limit setting - it has no effect as far as I'm aware when specifically curve modding.
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