News MSI Afterburner author says triple fan RTX 5080 GPUs will have three independent fan controllers — Async speed control support for all three fans t...

[Admin]

MSI is rumored to equip its triple-fan RTX 5080 GPUs with three independent fan controllers.

MSI Afterburner author says triple fan RTX 5080 GPUs will have three independent fan controllers — Async speed control support for all three fans t... : Read more

 

[das_stig]

If you have a 30xx or 40xx, smart money says miss the 5000 unless you have to be cutting edge, performance jump, just not worth the cash NV expects to gouge from its customers.

 

[Moonstick2]

Thermally I fail to see the point. All three fans are cooling the same large heatsink, no? If it's a good thermal conductor as it should be then the thermal variation shouldn't be so much that you'll see a real advantage in blowing air harder over one third than the rest.

Acoustically I can imagine three fans so close to each other but running at different and varying speeds has the potential for unpleasant or distracting effects.

Having the options for running just one fan at low speed or two fans at the same speed might make some sense maybe.

 

[Gillerer]

But the fans usually aren't cooling the same parts exactly. For example power delivery circuitry is usually located at the far end of the PCB.

Not only that, the layout of the graphics card causes fans to have varying level of obstruction in their air path, so be more or less expensive acoustically to run at a given speed.

The most extreme example of that would be a thru-flow fan setup. There is a considerable advantage in being able to prioritize the fan that blows air directly out the back (instead of generating more noise from pushing against a hard obstacle).

 

[leclod]

Thermally I fail to see the point.

I have a 3070 dual fan and I did follow that route to optimize fan speeds.
I ended up with, at full load, one my fans spinning 1600rpm and the other 1000rpm.
By standard they'd both be at 1600rpm (or rather a lot more because I also undervolted)
Some rpm are wasted (but it's not a big deal)

 

[Moonstick2]

I have a 3070 dual fan and I did follow that route to optimize fan speeds.
I ended up with, at full load, one my fans spinning 1600rpm and the other 1000rpm.
By standard they'd both be at 1600rpm (or rather a lot more because I also undervolted)
Some rpm are wasted (but it's not a big deal)

But are there any actual significant measured differences in temperature compared to e.g. running both at 1300 rpm?

 

[Moonstick2]

But the fans usually aren't cooling the same parts exactly. For example power delivery circuitry is usually located at the far end of the PCB.

But the fans cool the heatsink, which ideally is averaging or 'smearing' out the PCB temperature profile over its surface. Sure, parts of the heatsink are going to be warmer than others, but the differences shouldn't be anywhere near as pronounced as on the card itself. I can't see individual fan control on a single card, even the larger ones, as being more than a gimmick.

Not only that, the layout of the graphics card causes fans to have varying level of obstruction in their air path, so be more or less expensive acoustically to run at a given speed.

Fans don't blow on the card, they blow on the heatsink, which can be designed for airflow however the designer sees fit. The graphics card layout doesn't cause obstruction because it's effectively insulated from the direct airflow.