In my journey to become an elite member I keep coming across these gems of information. Thanks to all the helpful people.

Any idea on cost for a cpu and gpu loop? either hard or bendable

https://www.ekwb.com/custom-loop-configurator/
 
This is a good starting place. Price will depend on what you want. I would use the configurator as a starting point and then you can compare other brands and pricing. The price may seem high but their quality is Excellent. You can find a lot stuff used at a discount.

tattude69
https://www.ekwb.com/custom-loop-configurator/
 
This is a good starting place. Price will depend on what you want. I would use the configurator as a starting point and then you can compare other brands and pricing. The price may seem high but their quality is Excellent. You can find a lot stuff used at a discount.

Cannot even get it accept chassis name.

everyone who says that they are scared to water cool, its actually a really cool and fun thing to mod your pc with. Remember to tighten fittings, but not too much as they'll damage the o rings and start a leak. Maintenance is the the only thing that is a bummer, since my loop has clear thin fluid, I only flush it and maintain it once a year.

Jhenke
Any idea on cost for a cpu and gpu loop? either hard or bendable

it honestly depends... if you using only only premium products (EKWB, corsair, Thermaltake, etc) it will be excess of 600 dollars. but if you use a mix of "lower quality parts" (XSPC, offbrand brands) and premium parts, it will be like 400-500 bucks.

Are there some definitive benchmarks/reviews anywhere that show the overclocking possible from water cooling a GPU vs air cooled? (or even some anecdotal data from all you fine people here?).

Further to that, what about comparing custom cooling versus AIO for OC's? 

ShadeZE82
Are there some definitive benchmarks/reviews anywhere that show the overclocking possible from water cooling a GPU vs air cooled? (or even some anecdotal data from all you fine people here?).

Further to that, what about comparing custom cooling versus AIO for OC's? 

Nvidia Boost with all else being Equal --- Colder is Faster
 
ever since the 10 series GPU & Nvidia boost technology - you could not OC with "brute force"

For me. I cant say better overclock. I will say stable overclock without temperature being the limit. After you lower temps it will be a voltage issue that becomes next factor and silicon lottery. Your parts will also last longer due to cooler operation. My gpu use to run at 61c at 2038mhz until extended use the and then would throttle as temp increased. Now water cooler I can maintain 2038mhz at 35c with the hottest I have seen being 38c and no throttling. I7 10700kf maintains 5.1g all cores 1.35v 61c(gaming) (75c stress test). Not the best but consistent regardless of air temperature plus silent compared to my air cooling setup. At the end of the day it's what you want for your rig. A properly planned system is what matters. Good luck

I like to watch the videos on YouTube of water-cooling, but I'm too nervous to put water around my PC. Lol! I don't like the extra maintenance really.