Blai5e

I ran SLI'ed w/cooled 1080TI's (EVGA SC2's) for a long while and bought an EVGA 3090 FTW3 Ultra which I also watercooled. In most cases, the 3090 outperformed it plus it has 2nd-gen Ray Tracing, Video Super Sampling and DLSS 3. There were a few edge cases (mostly older games and some benchmarks like Firestrike) where the SLI setup "out-rastered" the 3090 though. @OhYou_ - don't forget that with the RTX-3090 you get 24GB of GDDR6X whereas the RTX-2080TI is 11GB of GDDR6 which may prove advantageous with some game titles.

Was your case performing some h/disk activity when the photo was taken? If not, you mixed up the case's Power LED and the H/Disk LED leads to your motherboard. Hint: Power LED is blue-ish.

@RandomNeedsHelp - Why is the memory reporting 7001MHz? Shouldn't it read 1750MHz by default? If I were you, I'd DDU the driver, uninstall MSI Afterburner and start again with fresh downloads. Scenario 1: Card is in "safe" mode. You may be having an issue with a PCIE riser/ motherboard PCIE slot or your power cables. You could try reseating the card and/or reseating your power cables. Scenario 2: (Less likely) As you have a waterblock installed on the card, it could be mounting pressure (this is known to keep the GPU clock around 400MHz) but as you have had the block on for a while, I doubt this is likely.

@Teletha - I assume the last post was directed at me (if not, sorry). I have my GPU vertically mounted and the CableMod 12VHPWR to 4 x PCIE (Corsair TYPE 4) cable comes up the backplate side of the card so no issues with tube runs. Conveniently, the 12VHPWR cable sits neatly between the 2 sticks of RAM and allows for the 35mm minimum before the bend with ease.

@Teletha - mine is a TUF 4090 OC. Yes, I could fully seat the CableMod adapter but the clip to release it is blocked by the adapter itself. If you're fine with having to remove the backplate if you ever need to access the adapter's clip (like I had to) then technically, it'll work.

@Teletha - EK officially doesn't recommend using the CableMod 90° or 180° angled adapters with their 40-series blocks EK-QUANTUM VECTOR² WATER BLOCKS COMPATIBLE WITH CABLEMOD 12VHPWR CABLES... I have my 4090 vertically mounted (in a Lian Li PC-O11 XL) and was attempting to use a 180° CableMod angled adapter which ended up interfering with my Corsair Dominator RAM (I did get it fully seated into the card BTW) and I had to remove the backplate to get to the clip to remove the CableMod adapter.

@Agall - I too use the CableMod 4 x PCIE to 12VHPWR cable for my ASUS TUF 4090 OC (got the cable before I bought the 4090 during its first release week) and it has worked flawlessly so far. Sorry yours didn't work out as expected. As an aside, don't try to use the Cablemod 180° adapter when you have an EK block on the card. Yes, it'll fit but my Dominator RAM was too high and interfered with adapter with the card mounted vertically. To get it off, I had to remove the backplate of the card just to get to the release tab! EK has since put a warning about incompatibility (not for my reason) but rather they are concerned that the cable cannot be fully seated (which I didn't experience). Seems strange that Corsair would state that their Premium PCIE GEN 5 12VHPWR 600W TYPE 4 cable wouldn't work with your TYPE 3 PSU. Seems to contradict the disclaimer on their Legacy PSU Cable Compatibility page. Wonder what magic they performed to prevent backward compatibility with TYPE 3 PSU's or the person on the other end of Corsair's Live Chat was misinforming you?

@Agall - Corsair's documentation begs to differ, from Corsair's Legacy PSU Compatibility page My understanding is the actual connectors on the PSU side differ slightly between TYPE 3 and TYPE 4. I have a few sets of Cablemod Pro full replacement cable kits (all C-Series Type 3) that I use between three different PSU's, HX1200i, AX1200i & AX1600i. The only change I have between these PSU's is the 24-pin I ordered specifically to use with my AX1600i.

@Agall - Corsair TYPE 3 & TYPE 4 PSU cables are electrically identical barring the 24-pin cable so your TYPE 3 Corsair PSU can absolutely be used with the Corsair TYPE 4 12VHPWR to 2 x PCIE cable.

@Radiolint - I just had a quick look in Google and the Canadian company DazMode claims to have 7 in stock.

Question to all: are you all using the supplied 3 x PCIE to 12VHPWR adaptor? If so, try disconnecting the PSU cable from one of the adapter's PCIE pigtails and see what happens. I know Gigabyte supplied some iffy adapters that were causing all sorts of issues when all 3 PCIE pigtails were connected on the supplied adapters (replacing the adapter with a native cable fixed the issues).

@Bouncewasp - had a look on EK's webshop and 90° EK-Quantum Torque fittings in Black Nickel is shown as "out of stock". They were recently on a 20% discount so that might be the reason. It's the same for the 45° fitting albeit they still show they are currently in stock. Note: the EK-Quantum Torque Micro Rotary 90° - Black Nickel (which is a fairly recent product) is classified End-of-Life but the other Black Nickel Torque fittings aren't.

That is just bad advice to throw out there. PSU manufactures may (and do) use different pinouts and in some case don't even share a common pin layout across PSU's within a single manufacturer. @ShooterPawn - @IkeaGnome has stated the cable you linked is suitable. The other way around this (if the cable wasn't suitable) would be to use a cable extension that split to 4/4.

If you look through the photos, you'll see that the 8-pin connector can split off 2 of those pins. So yes.

Sandpaper is usable but a deburring tool like this PrimoChill PETG/Acrylic Reamer/Deburring Tool or what I use (but make sure you get the correct size for your tubing) PrimoChill RFB Rigid Tubing Finishing Bit - 10mm ID x 12mm OD is easier.