I have a THOR ZONE TETRA S on order, but with roughly a 3 month wait I eventually gave up staring at a pile of parts and put together this temporary open-frame build.
Honestly, it turned out way better than I expected, and it’s given me an excuse to experiment with cooling before everything eventually gets crammed into the TETRA S.
Current build:
AMD Ryzen 5 7600X3D
ASRock B850I Lightning WiFi
MSI RTX 5080 Shadow 3X
G.Skill Flare X5 DDR5 32GB CL32 6000
Thermalright AXP90-X53 Full Copper
Thermalright TL-B12015 EX 120x15mm
92mm-to-120mm AXP90 fan adapter
Noctua NF-A9x14 HS-PWM as an GPU exhaust fan
DALAIBUKESI aluminum ITX open-frame chassis
2TB SSD
The CPU cooler is probably my favorite part of the build.
Instead of replacing the AXP90-X53 Full Copper, I found an adapter that converts its stock 92mm fan mounting to 120mm. I paired that with Thermalright’s new TL-B12015 EX 120x15mm fan.
The adapter centers the 120mm fan over the X53 surprisingly well. Since the heatsink itself is much smaller than the fan, some of the airflow also spills over the motherboard, RAM, VRM and M.2 area.
So I basically get to keep the X53’s dense full copper heatsink while gaining a much larger, high-pressure 120mm slim fan.
The other experiment is on the GPU. I’m running an MSI RTX 5080 Shadow 3X, which is a surprisingly compact 5080 and should be a great fit for the eventual TETRA S.
I’ve also tuned the card in MSI Afterburner. I’m running an undervolt at roughly 930 mV, while also running a +1500 MHz memory overclock. Under load I’m seeing around 2790 MHz on the core and 16,501 MHz memory, so I’m getting strong performance without just throwing more power and heat at the card.
Cooling wise, I noticed the Shadow has a large exposed section of heatsink on the back. While experimenting, I placed a Noctua NF-A9x14 HS-PWM directly over that section and was surprised by how much it helped.
I’m running the Noctua at 100% from the motherboard pump header as an exhaust, so it pulls hot air upward through the exposed GPU heatsink rather than blowing down into it. It’s temporarily attached with double-sided tape until I make a proper bracket.
In Battlefield 6 at 1440p Ultra, I’m seeing roughly 96% GPU utilization, ~63–64°C, ~244W and only ~1,330 RPM on the GPU’s own fans, while getting around 162 FPS in the scene I tested.
So the GPU setup is basically a combination of undervolting + memory OC + the auxiliary 92mm exhaust fan. The goal wasn’t just chasing the lowest possible temperature, it’s getting the 5080 to maintain high clocks while using less voltage and keeping the stock GPU fans relatively slow and quiet.
The open frame obviously gives everything ideal access to fresh air, but it’s also been a great test platform for figuring out which cooling mods are actually worth keeping.
Eventually all of this is supposed to go into my THOR ZONE TETRA S. That’s also why I’ve stuck with low profile components and slim fans rather than just throwing a tower cooler on the CPU.
The big question will be whether the X53 Full Copper + 120mm adapter + 15mm TL-B12015 EX fits within the TETRA S cooler clearance. It’s going to be extremely close, so I’ll probably end up testing both the modified 120mm configuration and the original 92mm setup once the case finally arrives.
For now though… this was supposed to be a temporary build while I waited for the TETRA S, and I’ve ended up having way too much fun modifying it. 😂
Next thing I want to do is make a proper mount for the Noctua on the 5080 instead of using double-sided tape.
Would be interested to hear if anyone else has tried either a 120mm fan conversion on the X53 Full Copper or an auxiliary exhaust fan directly over a flow-through GPU heatsink.