Antec KÜHLER H2O 620/920

[Support@ANTEC]

What do you guys think about ANTEC KÜHLER H2O 620 / ANTEC KÜHLER H2O 920?

Is liquid cooling something for you?
Do you prefer regular air cooling?

We would love to hear your opinion, experiences and suggestions.

Info on ANTEC KÜHLER 620
Info on ANTEC KÜHLER 920

[MadduckUK]

As long as its cheaper than the corsair equivalent you have a winner.

[GheeTsar]

If the extra performance warrants the extra cost over a top end air cooler and can operate extremely quietly I would buy.

[walibe]

I have just used the 620 in my build. I havn't done a full tower build in probably 10 years now, prefering Shuttles and a couple of MATX based builds. Due to my work I'm using VMWare/Vspehere alot so needed a core i7200 2600k and 16 GIG of RAM and went for a full tower build.

I selected the H20 620 as I had read alot about the H50/H70 coolers from Corsair so did a bit or research after finding the 620 at Scan to find it appears to cool better than the H50 for less money. It meant there wasn't alot of weight on the processor compared to some of the larger air coolers and it reminded me of the coolers shuttle used to use with the headpipe/radiator configuration. I installed another fan for a push/pull configuration and have been extremely impressed.

It idles at 32 degrees and is rather quiet with the 2600k overclocked to a modest 4.0ghz.

Will I buy another? Yep - I am waiting for your version of the H100 cooler when it arrives.

Now if only there was a version for top end graphics card .

[Support@ANTEC]

Thank you guys for the amazing feedback. Much appreciated. Please keep it coming.

There is certainly a misconception that KÜHLER H2O 620 and 920 are equivalent to the offers of Corsair. They are not. We are not shy about the fact that we are partnering with Asetek. Corsair did the same before us, but they left. We took that chance to make things right for problems people complained about with older generations:

Namely, Antec gives you more flexible, and at the same time extremely durable tubing. Installing a cooler should not be 'You vs. Computer Case vs. Processor Mounting'. Furthermore the bottom plate is a further development that provides awesome cooling capabilities.

With KÜHLER H2O 920, we went a good step further and include software to control everything to your individual needs. Just plug the cable into a USB header of your Mainboard, install the included software and you are good to go! You can easily monitor cooling performance, liquid temperatures, pump speeds, and on top of that choose how fast those fans on the radiator should spin. Control everything manually, or just let it happen automatically.

[walibe]

I hadn't seen the 920 at the time. If you do ever make your own version of/improved H100 cooler send me one! .

A few of the better reviews pointed the similarities and differences. For example the 620 seems to have the block/pump of the H70 with the radiator of the H50 and far better tubing.

I have NEVER been this impressed with a cooler, even back in the time before I joined the RAF when I ran a review site and we tested ALOT of coolers.

[Support@ANTEC]

Thanks walibe, We also believe that our liquid cooling line up is really competitive.

In the meantime head over to our Facebook page and participate in the Raffle to win one of the KÜHLER H2O 620's! CLICK!

Good luck!

[ctgilles]

I bought 2 Antec 620's this week to replace the Archons so I could free up some space.
But the 620's are unable to cool my Xeons enough (already tried reseat 3 times and had a H70 before). They're only at 1.25V and 3700Mhz
Strange... I expected better temps :s (as good as a H70 or close) certainly because the 920 is not that much better. I felt the rads and they are really hot (too hot?)

Are hexcores too much for this cooler? Do I need to get 920's (I can't swap this anymore at the store)? I already ordered 4 Scythe GT's for push/pull maybe that will help.

The weather 30°+ is not helping stress@80~86° and the Archons were a lot cooler.

[Biscuit]

I hadn't seen the 920 at the time. If you do ever make your own version of/improved H100 cooler send me one! .

Another vote for antec to make a dual rad cooler!

[Support@ANTEC]

Hi there ctgilles,

that is weird. Hexcores should be no problem for the 620s. They have a TDP of 95W, although you are putting in some extra voltage there to overclock them. Can you check the performance at standard clock rate and report back if it is any better? Also please check with the manual, if you have installed the retention module properly. Sometimes this can lead to issues with the performance.

Let us know how it goes,

ANTECsupport

[magnusfl]

With KÜHLER H2O 920, we went a good step further and include software to control everything to your individual needs. Just plug the cable into a USB header of your Mainboard, install the included software and you are good to go! You can easily monitor cooling performance, liquid temperatures, pump speeds, and on top of that choose how fast those fans on the radiator should spin. Control everything manually, or just let it happen automatically.[/QUOTE]

the 920 is sweet but to pricy

[clum]

Very disappointed with my 620. At stock speeds/volts my 2600k's hitting 70 under about 3 minutes of load. Clocked to 4.7 on 1.4v, it's hitting 76 after a few mins. Tried multiple re-seats, various types of aftermarkewt fans mounted in every possible combo of push/pull, two types of aftermarket thermal paste. Also made sure the pump is operating at 100%. BIOS reporting 14-1500rpm. Nothing can lower the temp from climbing to 76 on load. Strangely even at these temps the rad is only very, very slightly warm to the touch, whereas the pump/block is nearly melting.

Could there be a problem somewhere in the unit? I'm relectant to RMA it as it is working to an extent so would probably just get returned to me. Problem is that I feel it's not wokring nearly as well as it should.

[Support@ANTEC]

Hi clum,

We are very sorry to hear that you are disappointed with your 620. Your temperature readings are a bit high in my opinion. You should be able to see temperatures in the range of 55 to 65 degrees under full load.

What tool are you using to measure the temperatures of your CPU?
What thermal compound do you use? Maybe too much or too little of it?
Are you always reading the same temperatures regardless to how you setup the fan(s)?

Let us know a bit more details about how you exactly you run your setup, and we might figure out what the problem is here.

ANTECsupport

[clum]

Hi, thanks for the quick reply.

I've used several tools to monitor the temp, speedfan, realtemp, HW monitor as well as BIOS. All show consistent readings. My case is a Corsair 600T so there's plenty of airflow and case temps are low.

I first used the stock thermal pad which came on the unit. I've since tried MX-2 and Silver 5, both of which yield the same results.

Yep, regardless of how many fans I use, which type of fan used, and in which configuration I run them, the temps are always identical. Tried having the fan suck air into the case, out of the case, push/pull in both those configs with aftermarket fans. Temps always peak at 76 after only a few minutes when OC, and 70 on stock.

I get the impression that the coolant is not transferring its heat to the radiator properly. This would explain why the various fan setups don't make any difference, and also why the rad isn't even warm to the touch, even when the temps are 70+. Really not sure what to do on this one as I'm sure if I RMA it to Scan, they'll just test it and tell me that it isn't faulty, as it is technically working.

[Jym_Dastarly]

changing the subject slightly. What are people getting in the way of idle temps?

I'm running an i2 2600k at stock speeds and voltage at the moment on an Asus P8P67 Delux. I am running the Kuhler 920 at around 1000 RPM (fan speed), temps are around 34c which is the same as the rubbish Intel stock cooler! Temps are loads lower under load though. I have seen loads if people getting idle temps in the high 20's. Is this normal? do you think i should try reseating the cooler? I would have smudged the artic 5 when fitting ( i had some fitting issues, i screwed the locking plate in too far originally) would that make 5ish c different? Also, is it best to power it directly from my PSU or use the CPU fan header?

Cheers!
James

[MadduckUK]

definitely a dual rad cooler will be needed in the near future. we may be dealing with 120w or so right now, but if a Bulldozer is going to OC to 4.5GHz+ at 180w then i for one will be looking for something that can do that. and i think an upgrade from the current H50 which would struggle, to a dual rad, but similar cooler, which can deliver will be on the cards for me and many others.

actually a double-thick. dual rad, with a list of approved case covering all price segments would be niiice. just beef it up silly and tell us it can cope with a 200w CPU, id buy it and its suitable case based on future proofing, and super nice temps even if i never need the full 200w