Are you hearing any spashing sounds? Did you do a lot of tipping of your case, the rad on top with outlets facing down can produce a large a bubble in the rad.
https://koolance.com/gpu-210-video-card-vga-chipset-water-block
50mm hole spacing are within the range of the hold down arms.
https://koolance.com/files/products/diagrams/gpu-210_d1.pdf
Used this
https://www.ebay.com/itm/MAZE4-DLX32-INTEL-CHIPSET-RD600-240-/233340737743?_trksid=p2047675.l2557&nma=true&si=HQaXjOfNB0TEdi5zo6%2B5Ahk2FLk%3D&orig_cvip=true&nordt=true&rt=nc
and this
https://www.ebay.com/itm/30pcs-Aluminum-Heatsink-Cooler-Adhesive-Kit-for-Cooling-Raspberry-Pi/362597555469?_trksid=p2485497.m4902.l9144
on my 1660 gtx. gpus are
easy to cool.
Very nice loop!!!
Here is my Ryzen 1600, Ambient 23c, 70c max core. A 120 rad (Swiftech 1st gen.) 1 gentle typhoon 1800,1 comair rotron mc12b3. Blocks are ek supremacy mx and koolance gpu210 with a d5 pump, all in a lan party case.
ASUS A88XM-E BIOS Beep Codes
BIOS Beep sound
Description
1 short beep
VGA detected
Quick boot set to disabled
No keyboard detected
2 short beeps
When using Crashfree to recover BIOS, the new BIOS is successfully recognized
1 continuous beep followed by 2 short beeps then a pause (repeated)
No memory detected
1 continuous beep followed by 3 short beeps
No VGA detected
1 continuous beep followed by 4 short beeps
Hardware component failure
A study done by I forget who made the basic conclusion that rads with low fin count and thin are optimal for 1000 rpm fan or less. All rads perform about the same between 1200-1800 rpm, and thick high fin rads above 2200 rpm.
You have the card, measure the distance between the mounting screws, most the universal blocks have there drawings on the internet.
https://www.ekwb.com/shop/EK-PSS/EK-PSS-3831109805145.pdf
https://koolance.com/files/products/diagrams/gpu-210_d1.pdf
Also, have you had the pump apart before, or did you buy it used??? Dropping the magnet impeller into the housing can damage the plastic rider and cause it die young.
This, the low volume/head pumps work well if the parts are not restrictive (your parts are not) but can be a real pain to bleed!!! If your rads are in the top of your case with the barbs pointing down, they could be filled with air. Tip your case alot!!!!!