Cryorig’s C5 and C5 CU are the first mainstream vapor chamber CPU air coolers targeting the small form factor case market.

SPECIFICATIONS

MODELS	C5	C5 CU
DIMENSIONS	L: 97 x W: 97 x H: 54.9mm (including fan)	L: 97 x W: 97 x H: 54.9mm (including fan)
HEATSINK	Aluminium + Vapor Chamber	Copper + Vapor Chamber
COMPATIBILITY	Intel: 1200/1700AMD: AM4/AM5	Intel: 1200/1700 AMD: AM4/AM5
FAN	L: 96.8 x W: 96.8 x H: 31.5mm (includes fan mounting clips) 3200RPM	L: 96.8 x W: 96.8 x H: 31.5mm (includes fan mounting clips) 3200RPM
RAM CLEARANCE	N/A	N/A

GALLERY

FANS

The attually thickness of fan is roughly 20mm. 31mm including fan clips over the heatsink. C5 heatsink is around 29~30mm tall.

BENCHMARKS

We compared CRYORIG C5 and C5 CU with its 54mm height against the current low profile king: Thermalright AXP90-X47 FC at 47mm.

Unfortunately, it did not quite live up to expectations on AM5 with high of 88°C for C5 CU, compared to 82°C for AXP90-X47 FC. I cannot comment on cooling performance on Intel platforms, which can sometimes differ.

CONCLUSIONS

I have to give credit, where credit is due. This is first vapor chamber air cooler to our knowledge and certainly the first low profile. While it did not beat the AXP90-X47 FC, which would be no small feat btw, it still performed relatively well. I also found the accessories packaging design to be a nice touch and thought out.

Overall however, I’m not sure what to make of C5 as doesn’t move the needle in terms of thermal performance compared to best low profile air coolers of similar height.

Some final thoughts… attaching NF-A9x14 or other 15mm thick fan to C5 heatsink brings height to around 44~45mm which some users might find a use for like reduced turbulence noise compared to 47mm tall coolers. You will however have to get creative with attaching 3rd party fans to C5 heatsink.