Do you really wanna know

Typically, your power supply's maximum efficiency is between 40% and 60% of it's maximum capability. https://www.corsair.com/ww/es/blog/how-to-build-a-pc---the-power-supply

I checked the photos too, then I got the case... Still, you live and learn (or you don't)!

That's my question? Does it? I thought mine did, and it says so in the specs, but it doesn't! Try to get access to the case before you buy. or buy it from a seller that will accept returns so you can test and reject of not okay...

My case (Corsair 780T) says it takes 3x 120mm in the front, and on top, but it doesn't! How do you know it takes 3x 120mm?

An RTX 2060 Super would seem appropriate, given your specs... And save you a bundle too!

Seems fine, but the memory - CL16-18-18, is not so good! Can you not upgrade to 16-16-16 (obviously 14,14,14 is best, but 16,16,16 would be much better than 16,18,18)!

Try a 1.24 Volt undervolt in BIOS, you shouldn't get any noticeable slowdown, then keep decreasing frequency to 1.2, (reboot and retest between each 100 mv undervolt between 1.25 and 1.20) and you should keep performance, whilst losing a degree or two from your temps...

I'm sorry, its just that when you posted that, I took you at face value and thought you knew what you were saying... My bad...

Okay, you're going off at a tangent... No, I never mentioned HDMI! So, to keep matters simple, the moment a TOSLINK cable connects to any part of any set-up, the sound is down-sampled to AC3. No matter where it came from, or where it is going to, and no matter if you use a $1 HDMI cable, or $ million multi-shielded super-duper cabling going to the worlds most expensive receiver... If you have TOSLINK, you have AC3! Granted AV receivers will attempt to rescale that sound-track back from AC3... But you still have AC3... To be as clear as clear can be - use an optical cable - anywhere - and you will get AC3!

Oh okay, you don't seem to realise that TOSLINK can't carry anything more than AC3 in 5.1. It doesn't have the bandwidth you see. The maximum TOSLINK (S/PDIF) it can carry is 2 channel PCM, or 5.1 down-sampled. Its a dead standard, that hasn't been touched/updated in well over a decade. Many people (like the commentators above) don't understand the bandwidth limitations, but you simply can't pass more data (loseless) through a lossy pipe than it can carry! That said, it is possible and indeed do-able, for an AV receiver and a decent TOSLINK cable to pass through more of the signal than S/PDIF (TOSLINK) will allow, but there again that won't comply wth HDCP specification, so you're stuffed unless you're Steven Spielberg or some-such... In other words, whatever you send through to your AV receiver, in whatever form that might be, the TOSLINK cable will simply down-sample that source to AC3. Its in the TOSLINK/SPDIF specifications! So whatever 'quality loseless sound' you think you have been listening to, it is based purely on the placebo affect, as TOSLINK/SPDIF simply doesn't have the bandwidth to transmit a lossless signal... Sorry no one has explained this to you before, but I have to admit, I was surprised when I learnt this too! To demonstrate it, go see your local retailer. I did, and boy oh boy, was I surprised to find what I thought was DTS-HD, was in fact, AC3, and clearly so, when I heard the sources side-by-side!

Fair enough, but you've just hobbled your sound, and you will get DVD quality AC3 soundtracks, no matter what the source! All other codecs will be ignored and/or down-sampled to AC3... So, the question that needs to be asked/answered is; why bother for AC3 sound?

Yes, suggestion No. 1 Don't pay $1,000 for a GPU, it only encourages them!

using TOSLINK optical" Then why are you bothering? You can't receive DTD-HD, nor Dolby Atmos nor anything other than AC3! So, please confirm you've lost the TOSLINK already, otherwise you might as well save everyone the bother...

You contradict yourself you want: 1. machine learning 2. decent GPU that can handle load not too heavy Machine learning is 100% GPU intensive in many applications So, which is it?

FPS is low in what? CS GO? CFrysis? Metro exedus? Where is it high and where is it low? Also, what is it like transcoding? Have you tried re-rendering a short video in Handbrake to find out?