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post #1 of 20 (permalink) Old 02-03-2020, 11:00 AM - Thread Starter
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Alphacool radiators - good?

I'm debating getting some radiators later this year, and the Alphacool XT45 caught my eye, as it's a medium size and gives more flexibility in the case I'm working with. Performs pretty well at medium fan speeds, which is where I'd be as low noise levels are a high priority for me.

Are Alphacool radiators good quality?

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post #2 of 20 (permalink) Old 02-10-2020, 11:03 AM - Thread Starter
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Bump.

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post #3 of 20 (permalink) Old 02-10-2020, 11:57 AM
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Quote: Originally Posted by sakete View Post
I'm debating getting some radiators later this year, and the Alphacool XT45 caught my eye, as it's a medium size and gives more flexibility in the case I'm working with. Performs pretty well at medium fan speeds, which is where I'd be as low noise levels are a high priority for me.

Are Alphacool radiators good quality?
Yes they are very good ,i had 8 -10 xt45 in past , 360 and 420 versions , i highly recommend them for low/quiet fan speeds.
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post #4 of 20 (permalink) Old 02-10-2020, 12:07 PM
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I have 2x360mm XT45. Fantastic Radiators. Great build and performance. Lots of performance reviews out there so for sure check those out. The only thing I would have to say is make sure you give them a good clean. I used hot distilled water and vinegar. Plenty of fill, shake, flush until there isn't any more debris on the inside. This should be a normal procedure for any new radiators.
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post #5 of 20 (permalink) Old 02-10-2020, 01:10 PM
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Have an xt45 420mm in my main rig. No issues with it. The multiple ports are handy and it performs well.

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post #6 of 20 (permalink) Old 02-10-2020, 02:14 PM
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I had a couple Alphacool rads (UT60 240mm and XT45 360mm) and I just got a Hardware Labs Nemesis-L 420mm (basically a more space-efficient GTX) and the Hardware Labs is hands down the best. Alphacool is good, but Hardware Labs is on the next level quality-wise and also beats almost everything else performance-wise.

Good Review: TechPowerUp reviews

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post #7 of 20 (permalink) Old 02-10-2020, 02:59 PM - Thread Starter
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Quote: Originally Posted by LazarusIV View Post
I had a couple Alphacool rads (UT60 240mm and XT45 360mm) and I just got a Hardware Labs Nemesis-L 420mm (basically a more space-efficient GTX) and the Hardware Labs is hands down the best. Alphacool is good, but Hardware Labs is on the next level quality-wise and also beats almost everything else performance-wise.

Good Review: TechPowerUp reviews
Right, but most HL rads are 54mm+, which limits mounting possibilities (with mounting multiple rads in a case). The HL GTS is there only slimmer rad at 30mm, but it has much higher flow restrictions than any other radiator out there (at least according to XtremeRigs 2016 roundup). Doesn't affect cooling performance as it does perform great in that regard, but it can cause lower flow elsewhere in your system and requires a stronger pump.

The alphacool on the other hand has extremely low flow restriction.

Really I would have preferred the HL SR-2 which seems tuned for low RPM fans and performs very well, but it's also 60mm thick, again limiting mounting options.

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post #8 of 20 (permalink) Old 02-10-2020, 05:12 PM
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Alphacool was the only 480mm to fit, width-wise, in the bottom of my Phanteks primo. The 45mm model also makes a good fit for top of the case and I assume a lot of cases. All copper, pretty dang good radiator.

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post #9 of 20 (permalink) Old 02-11-2020, 09:59 AM
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Quote: Originally Posted by sakete View Post
Right, but most HL rads are 54mm+, which limits mounting possibilities (with mounting multiple rads in a case). The HL GTS is there only slimmer rad at 30mm, but it has much higher flow restrictions than any other radiator out there (at least according to XtremeRigs 2016 roundup). Doesn't affect cooling performance as it does perform great in that regard, but it can cause lower flow elsewhere in your system and requires a stronger pump.

The alphacool on the other hand has extremely low flow restriction.

Really I would have preferred the HL SR-2 which seems tuned for low RPM fans and performs very well, but it's also 60mm thick, again limiting mounting options.
The GTS does have higher flow restriction, but that's really only an issue if you have multiple flow restrictive devices (Like a couple or a few GTS rads, some QDCs, and a restrictive block or two). If you have a typical setup, a restrictive rad and maybe a restrictive block or two, one good pump is perfectly capable. A good DDC or almost any D5 pump will do very well!

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post #10 of 20 (permalink) Old 02-12-2020, 10:38 PM
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I have both Alphacool XT45 X-Flow and HWL GTS XFLOW rads in my case.

The HWL rads are very efficient but the width required me to Dremel my case to fit it in the front. Very good quality and really good at cooling with low to medium fan speeds. Most models only have the two ports.

However, there are times when you want to cut back on fittings and could really use a mutli-port rad. HWL has their SR series but you still have the width issue plus it is 60 mm deep.

The Alphacool XT45 rads offered me that extra flexibility. They are built well with a quality feel to them and are pretty decent cooling-wise.
They work well at low to medium speeds (when used with high SP fans), but are not as efficient as my HWL GTS rads.

I originally had a 140 XT45 X-Flow on the exterior rear fan set on exhaust. The extra ports allowed me to add a temp sensor, a drain, and an air bleed valve without using additional fittings.
The bleed valve was the high point of my system and also was used as a fill port. Very handy.

I now use an Alphacool 280 XT45 X-Flow radiator mounted externally. I use two Corsair ML 140 fans on push only.
When added to my loop (with 2x HWL 280 GTS XFLOW rads) I see a 25% to 35% lower delta (depending upon tests being run and ambient conditions).
All fan curves run off my Aquaero. I have a Quadro added as a remote device on my external radiator that links to the Aquaero.

You could probably get a better price for the HWL rads as the Alphacool can be a little pricey.
However, I am very happy with both of my Alphacool rads, and I am still holding onto the 140 XT45 for another build.

This is a good spot to see some very detailed reviews on radiators: https://www.xtremerigs.net/2015/02/1...or-round-2015/

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