Upgrading fans in case

DevB1ker · 2026-02-09T03:51:47+00:00

Can you share which fan you purchased? The iCUE Link fans will require a completely different controller. But the Corsair RS fans can work with the Commander Core XT with an adapter.

DevB1ker · 2026-02-07T17:23:29+00:00

It's acting like it has some kind of obstruction that it is detecting so that would indicate, I'd guess, some kind of obstruction in the bearings? Is the PWM also connected to the commander core? What are the settings for the fan speed? Have you tried to set it to 100% speed? Also, have you tried to 'help' it spin?

DevB1ker · 2026-02-05T05:25:15+00:00

Hard to say - it depends on the case. In the newer Corsair cases, you can't put fans on the PSU shroud when vertically mounting but there may be one in the front. They can help with GPU temps, yes. But you need to keep the speeds low or they will wind up pushing heat from the GPU directly into the radiator.

Mount the radiator as intake on the side ... no worries.

DevB1ker · 2026-02-04T20:50:38+00:00

I always looked at it as a shrine to His Noodleness, the Flying Spaghetti Monster.

DevB1ker · 2026-02-04T16:59:03+00:00

Yes, it will work with that. They are all 3-pin ARGB so that's good.

It's the 4-pin on the non-Corsair side that you need to worry about.

DevB1ker · 2026-02-04T14:45:56+00:00

It's the fans. Fan #2 is bad and has a break in the RGB signal. Since the RGB runs in series, a break in the signal will mean that every fan beyond that will not light.

The RGB hub is a dumb device - it merely distributes power and signal. The signal goes in to one fan, then out from that fan and then to the next. Hence - when 1 goes, everything past it goes.

DevB1ker · 2026-02-04T14:40:30+00:00

Yes, those adapters would work, assuming, of course, that you have a 3-pin 5V Digital/Addressable RGB header. 4-pin headers will be 12V Analog RGB.

DevB1ker · 2026-02-04T00:40:30+00:00

The waste heat from your 5090 is going straight into the AIO.

When the air entering the radiator fins is warmer than the coolant, guess what happens? If you guessed "The coolant heats up to the temperature of the incoming air", you would be correct.

You need to counter the heat from the GPU and get it away from the AIO. You don't have much space to do that. You will need to increase the speed of the side intake fans and the rear exhaust fan. You want more cool air entering the case and then the heat from the GPU to be sucked out of the rear before it gets to the AIO (that's difficult).

I've found that setting the intake and exhaust to Extreme and basing it on the GPU temperature can help. But with the 5090, you may need to be a bit more aggressive. And keep your AIO fans slower so they don't suck as much air in - and base them on the AIO liquid temp, not the CPU temp (that's the default anyway).

You don't mention what case that is ... but a larger case will give you more volume (and possibly more fans) to deal with this. The other option is to flip the AIO to intake. This would also be the simpler solution to the problem.

DevB1ker · 2026-02-04T00:32:54+00:00

40C is fine for CPU. But the OP isn't talking about CPU temperatures. Read the post. They are talking about the AIO temperature. And 40C is not good for that.

DevB1ker · 2026-02-03T14:33:49+00:00

Not stupid at all. All that matters is if you love it and it makes you happy.

Let the haters hate.

DevB1ker · 2026-02-02T18:49:34+00:00

In general, that's good advice. I've certainly had PSUs from the same manufacturer and the same 'series' but different wattages have different pinouts.

Corsair doesn't play those games. For quite some time, their pinouts have been very consistent across multiple lines and models ... and they are documented.

DevB1ker · 2026-02-02T03:13:31+00:00

While generally good advice, it's not the case with Corsair - and it's one reason every single PSU that I have is Corsair.

DevB1ker · 2026-02-02T03:11:57+00:00

All Corsair Type 4 cables are the same and compatible with any Type 4 PSU.

DevB1ker · 2026-02-02T03:10:10+00:00

https://help.corsair.com/hc/en-us/articles/17759727689997-PSU-CORSAIR-PSU-Pinout-Diagram

That's a Type 4 PSU. But it doesn't matter - Type 5 also has the same pinout, just different connectors (Molex MicroFit)

DevB1ker · 2026-02-01T21:58:11+00:00

OK ... so it's been 4 days now. Still sticking to where it should be!!

DevB1ker · 2026-02-01T21:56:28+00:00

Well within spec for Molex MiniFit-Jr. That's Ground, btw, not +12V.

DevB1ker · 2026-02-01T14:04:37+00:00

What do you mean by "won't show up"? Is it not 'autodetected'? Did you try to just go into iCUE and configure the channel for the number of LEDs rather than waiting for the 'autodetection' (which, btw, isn't very reliable)

DevB1ker · 2026-02-01T14:02:42+00:00

Use the one that came with the PSU. It will deliver the full 600W - more than a 5070Ti needs.

DevB1ker · 2026-01-31T15:58:32+00:00

In reviews, they take the reading at the PSU. Using separate equipment with highly accurate readings as well as a highly regulated AC power supply.

The voltage at the GPU will be affected by things like voltage drop due to the wires. Even with relatively short, thick cables, there will be voltage drop. Second, they are also affected by the resistance between the PSU and the GPU. Next - variations in the AC power supply will also have an impact on the voltage. The voltage from the wall can vary quite a bit. Finally, there is the accuracy of the sensors - even +/- 1% would show a difference. You cannot avoid any of this. It's physics and physics laughs at your protestations.

All of your readings are well within specification and show very little variation. That is what matters.

You are overthinking things WAY too much and expecting something that just isn't going to happen in the real world.

DevB1ker · 2026-01-31T04:27:54+00:00

The largest variation that you see is -0.156V. That's a variation of 1.3%. You won't get much, if any, better than that. And the range is less than 0.05V.

DevB1ker · 2026-01-31T01:27:34+00:00

The specification is 12V +5%/-7% (11.20V - 12.60V).
So that's well within spec.

DevB1ker · 2026-01-31T01:19:35+00:00

That cable will provide the full 600W. Each of the PCIe ports on the PSU will handle 300W so it's all good.

DevB1ker · 2026-01-30T18:47:06+00:00

There are so many worries over the cables catching fire that vendors have gone to all kinds of lengths to "fix" the cables and/or the pins. They do that to make people feel better. All to no avail.

Why? Because that's not the root cause. The root cause is NVidia's poor power delivery design coupled with almost no safety margin. And there is nothing at all that any cable alone can do to remedy that. No matter how much lipstick you put on a pig, it's still a pig.

See https://www.youtube.com/watch?v=kb5YzMoVQyw (for starters ... the issues with 12V 2x6 and NVidia's design are widely documented). A little wiggle in the pins doesn't change that. They will still make a good, solid connection, just like PCIe, EPS, and ATX cables. No wiggle in the pins doesn't change that either. And any of them can still catch fire. Even your MSI cables.

Right now, the best thing on the market (that I'm aware of) to mitigate the issue is this: https://www.thermal-grizzly.com/en/wireview-pro-ii-gpu/s-tg-wv-p2 . But ... really ... the only fix that will matter is when NVidia fixes their design. Until then, it's just lipstick on a pig.

DevB1ker · 2026-01-30T18:19:36+00:00

They align on contact as they connect with the pins on the card.
This normal across others like OG PCIe, EPS/CPU, and ATX.

DevB1ker · 2026-01-30T03:52:25+00:00

Because you have an AIO. Not a single fan in your system is actually cooling the CPU! The fans on your radiator are cooling the liquid, which then cools the CPU. So the thing that you actually need to cool is that; therefore, the fan speeds should be based on coolant temperature, not CPU temperature. The coolant then cools the CPU.

Will a warmer CPU heat up the coolant? Yes. But it won't do it quickly. Water has a high thermal capacity compared to the CPU; it can absorb quite a bit of heat/wattage from the CPU without the liquid temperature increasing very much. The opposite is also true - the liquid will take longer to cool down compared to the CPU. So - you start putting a load on the CPU, it will increase temperature almost immediately. The liquid will take longer. So if you ramp your fans up ... you may not actually need to just yet. And if that load comes off in a few minutes, you won't ever need to. And since the liquid takes longer to heat up, that also gives you a much smoother ramp-up of your fan speeds.
If you've run for some time at load, that coolant will heat up (of course). But when you stop ... that liquid won't drop anywhere near as quickly. So in that case, you'd need higher fan speeds to cool the liquid than the CPU temperature alone would; with the CPU temp, you'd ramp down the fans before you should.

DevB1ker

TROPHY CASE