H55 vs H105 comparison

I have both of these models running at full load with the Kraken G10 bracket on the same GPU model.
The H105 runs at a cool 36 C.
The H55 runs at 54 C.
With the stock cooler it runs about 65-70 C.
I am wondering if there should be so much difference between the H55 and H105 an why that is. I can tell the H105 has a much larger radiator and more powerful fans. How much improvement might I get by replacing the H55 fan such as an NF-12 PPC? I had a bad experience mounting the kraken with the H55. I was confused by the directions about the adhesive foam blocks and the card was very tilted while I was tightening the screws. I removed the blocks and tried to tighten a bit more, but I don't know if it's worth reseating the H55/kraken. 10 C improvement vs. stock isn't bad but of course I'd still like more.

I don't want to be rude or anything for the style but a lot of very vague information with no way to do a fair comparison or even figure anything, no info about what GPU (brand and model) are you using, no info about Room temp, case airflow, radiator mounting position.

But being truly fair, the H105 have way better pump, better fans, more dan double radiator Surface 120mm*27mm radiator with a single fan versus 240mm*38mm with dual fans. so yes, its normal to find such differences specially if you are using a power hog GPU.

In addition to what Araxie said, the H55 is just a cheap-o budget CLC whereas the H105 is a more higher-end CLC. In fact, the H55 actually performs worse than a cheaper air cooling HSF like the Coolermaster Hyper 212 Evo. So yeah, it's not surprising it's not performing as well as the H105.

Araxie said:

I don't want to be rude or anything for the style but a lot of very vague information with no way to do a fair comparison or even figure anything, no info about what GPU (brand and model) are you using, no info about Room temp, case airflow, radiator mounting position.

But being truly fair, the H105 have way better pump, better fans, more dan double radiator Surface 120mm*27mm radiator with a single fan versus 240mm*38mm with dual fans. so yes, its normal to find such differences specially if you are using a power hog GPU.

Click to expand...

Thanks. Both are ASUS 280X. You make a good point about radiator positioning and ambient temperature and to make a better comparison I could exchange positions as well. For the temperatures I gave neither radiator is in the case - it's just in open air but the ambient air temperature and airflow may still be different. I don't have a good ambient air temperature sensor but I'm willing to take suggestions. I can report back if I decide to do a better test

if you are going to test again, just be sure that the pump are going full power, if you have connected it to a motherboard fan header be sure to deactivate fan control in BIOS so it will be full speed or you can connect directly to the PSU with an adapter. as Dangman said, the H55 is a very low end unit hardly comparable to a high-end H105. so a big difference is expected, but sometimes errors are made, like TIM application or too tight/loose mounting. but 54C is nothing bad at all for a 280X, remember that the stock cooler is an big Asus DCU cooler which are very good and those cards can go easy over 250W and 250W for a tiny H55 may be really a difficult task just take that in consideration.