aerocool ht-101

slow_poke · Post by **slow_poke** » Mon Jan 12, 2004 6:59 pm

Anybody seen or tried an aerocool ht-101 cpu cooler?

silvervarg · Post by **silvervarg** » Tue Jan 13, 2004 2:13 am

Do you have a link to the cooler?
Are you sure you don't mean Aero Cool Deep Impact DP-101?

Trip · Post by **Trip** » Tue Jan 13, 2004 3:15 am

http://www.aerocool.us/cooler/HT101.htm

I think it's new, I don't remember seeing it there a few weeks ago.

Thanks for pointing this out slow_poke, it looks really good.

silvervarg · Post by **silvervarg** » Tue Jan 13, 2004 4:43 am

Oh, that is defenatly a new cooler.
It has many similarities with DP-102, like that it is made out of copper, and can take up to 2*80mm fans. Weight is "only" 470g vs DP-102 580g.

The interesting thing is that they changed from one single fat heatpipe in the middle to 3 U-shaped heatpipes (going up on two edges of the finns).

For some strange reason they now ship with a single fan (a 4-LED blue UV-fan). The DP-102 is shipping without fan.
Notice the wording "blue UV". Since UV=ultra violett, so it has a color in itself...
Well, I guess that part is just marketing crap. The specs of the fan just can't be right either or it would beat the L1A, and I have never seen a LED fan come close.

ruprag · Post by **ruprag** » Tue Jan 13, 2004 7:01 am

I think the spacing of the fins also looks interesting, they are much farther apart than in the DB-102 => possibly good with a low flow fan

silvervarg · Post by **silvervarg** » Tue Jan 13, 2004 8:01 am

I think the spacing of the fins also looks interesting, they are much farther apart than in the DB-102 => possibly good with a low flow fan

Well, not much further apart.
Judging from the pictures the HT-101 has 31 fins on aproximately 70mm height.
The DP-101 has 39 fins on aproximately 80mm height.
So roughtly 0.20mm extra space if they used the same thickness on the plates.

The surface area of each fin is slightly larger, but perhaps less effective due to the square shape and the placement of the heatpipes.
The big drop is that they now have fewer fins (31 vs 39).
As an example if we assume the discs have two sides only (0 height) and that the heatpipes take no surface area we can easilly calculate the total surface area:
HT-101: 2*31*76*50 = 235600 mm^2.
DP-102: 2*39*33*33*Pi = 266852 mm^2
So the total area is about 88% of what the DP-102 has.
This should reduce the cooling potential somewhat.

Now to the changes that are positive for the HT-101:
The outmost fins on the DP-102 does not get very good airflow with most fans, so they have a bit less effect. This would still make the DP-102 superior in surface area, but with less margin.
The shroud for the HT-101 makes airflow more controlled, and that could be a positive effect.
Since the outgoing air from the CPU will go more straigth to the exhaust this should give slightly lower chassi temps, but it might not show up in an open air test as most performance reviews are.

The question that remains is how well the new heatpipes work compared to the single fat version.
Assuming they are equally efficient my guess is that the HT-101 will perform either exactly the same as the DP-102 or possibly with slightly less performance. I expect any difference to be in the 0.01C/W range.
Even if it does performe 0.01C/W worse than the DP-102 that is still quite good considering that they shaved off more than 100g on the cooler.

hofffam · Post by **hofffam** » Wed Jan 14, 2004 7:34 am

I have a slightly less scientific assessment of the DP-101 to offer. I bought one about four months ago for my kid's computer to replace a damned noisy CoolerMaster HAC-V81. I bought that before I found SPCR! The cpu is an AMD XP1700+. I have an SLK800 in my other system (XP2000). I bought the DP101 because it was cheaper than the SLK and the few reviews I found were good. Previously I replaced the fan on the HACV81 with a Vantec Stealth, quieter than the rheostat'd fan that came with the HACV81. The DP101 dropped the temperature signficantly to consistently in the high 30s. The temperature was previously in the mid-40s. The case is an Enermax and not ventilated particularly well (the front air intake is a slot low on the front panel and essentially blocked by carpeting.

I'm very pleased with the cooling performance of the DP101. I use the supplied 60mm fan running full speed. I can hear it - but it is relatively mild compared to the previous setup. The workmanship of the DT101 is NOT impressive. Nothing like the Thermalrights. All of the fins are pressed onto the heatpipe and the bottom one is a bit loose. The aluminum base is a rough aluminum casting and not well finished. The interface to the cpu is OK. In spite of that I think the cooler is very effective and a good value. It seems to have great cooling power. I could reduce noise further by puting the fan on a fanmate.

GamingGod · Post by **GamingGod** » Mon Jan 19, 2004 10:50 am

OK I want to see a review of this thing now, if its better than a 7000Cu at equal noise, plus its easy to duct; then it might be a new cooling champ.

Trip · Post by **Trip** » Mon Jan 19, 2004 10:53 am

good point about the ducting. Heh, what do you think Bluefront?

ColdFlame · Post by **ColdFlame** » Wed Jan 21, 2004 9:28 pm

Just my opinion but I think the differences in performances can be explained as experimental errors, i.e. from the scientific point of view those 2 coolers are equal.

Now, I have to see to believe how an 80mm fan can be quieter than a 92mm fan and push more air

I guess we need to wait 'till someone here buys one and provides a subjective comparison between it and 7000, unless it is going to be Mike or Ralf

silvervarg · Post by **silvervarg** » Thu Jan 22, 2004 3:05 am

Now, I have to see to believe how an 80mm fan can be quieter than a 92mm fan and push more air

The trick is not in the fan, it is the effective use of heatpipes. By using heatpipes you can get the heat transfered furter away from the heat source faster than conducting heat through metal.
The result is that the outer edges of the heatsink gets warmer. Since the delta temp of air and heatsink becomes bigger the air that is flowing over the heatsink will absorb more heat.
So the 80mm fan can cool better on one heatsink than the 92mm fan does on another heatsink, but the difference is in the heatsinks, not in the fans.

halcyon · Post by **halcyon** » Sun Mar 14, 2004 4:18 am

Review at Viperlair.com:

http://www.viperlair.com/reviews/case_c ... hsf/ht101/

acidradio · Post by **acidradio** » Mon Mar 15, 2004 8:27 am

Here's a comparison of Zalman 7000 CU, SP97, SLK947 and HT-101. The lower temperatures of HT are reached while the fans are sucking are from the heatsink. It's a review done by a finnish site in Finnish, but on page four you will find results that are universally understandable.

http://www.skenegroup.net/fi/artikkelit/aerocool_ht101

The results with a Papst 12db point out that HT-101 is definitely the best heat sink with low airflow.

wumpus · Post by **wumpus** » Mon Mar 15, 2004 9:24 am

Geez, the Zalman AlCu is kicking ass with low airflow too. Same temps as the HT-101!

halcyon · Post by **halcyon** » Mon Mar 15, 2004 9:45 am

Thanks for the link Acidradio!

Please do note that the review states that Zalman at "low" fan setting may be even more silent than HT-101 with the "12 dBA Papst fan at 12V". The difference is only 1 C in temp.

Still, even though the test doesn't actually include accurate noise level information, the results are very impressive!

I found Dirkvader test that seems to differ in it's temp results:

http://www.dirkvader.de/frame.php?site= ... t-101.html

Dirkvader:
t(HT 101/29,6cfm fan) - t(7000A-Cu/full speed) = 1 C

Skenegroup
t(HT-101/19,8cfm fan) - t(7000A-Cu/full speed) = 1 c

That's quite a difference there if it truly performs equally well with 19,8cfm and 29,6 cfm fans (assuming the fan specifications are roughly correct).

Also, note that the DirkVader results are with the original fan, which is MUCH louder according to Skenegroup than the Papst 8412 N/2GL they used. So, the difference is quite remarkable between the two tests.

One interesting point is that the fan shroud + fan can apparently be installed for either horizontal or vertical airflow (in terms of the motherboard normal vector).

See this image from Dirkvader for horizontal installation:

And this from Skenegroup for vertical installation:

IMHO, this means that there is indeed a possibility for ducting the heatsink fan: either to a bottom-feeding fan construted PSU (vertical airflow) or to case rear exhaust/intake fans (horizontal airflow).

This could help notch down cpu and case temps a couple of degrees during longer runs.

Regardless of the uncertainty of the results (Dirkvader vs Skenegroup), I think the heatsink looks very promising!

Good find!

civic5zigen · Post by **civic5zigen** » Mon Mar 15, 2004 1:12 pm

Thermaltake have similar cooler...

Anyone tried these type of tower cooler with ducting? I tried ducting my SLK800 in my P160 w/ the rear Panaflo 120mm but the result are not very good. It may be due to the design of SLK800 it's meant to have air blowing onto it.

So I wonder how well these tower cooler will work if I make a ducting between it and my rear panaflo 120mm sucking hot air out? BTW, my rig is heavly OC'ed. Currently SLK800 keeps it at 43c idle and 55 load with panaflo 80mm blowing on top.

Trip · Post by **Trip** » Tue Mar 16, 2004 7:55 pm

I've never seen those, but it looks like it could be a copyright infringement on the aerocool

halcyon · Post by **halcyon** » Wed Mar 17, 2004 12:58 am

Probably made by the same company and sold under various names.

Talz · Post by **Talz** » Wed Mar 17, 2004 4:48 pm

Thermaltake liscenses/contracts out a lot of what they sell. Generally trading increasing flash and price, and decreasing performance or keeping similiar levels at best.

exxowire · Post by **exxowire** » Wed Mar 17, 2004 9:17 pm

I saw one store in Jakarta selling this cooler for $65. The Zalman 7000 AlCu that only cost $39 and works the same as the aerocool ht-101.

halcyon · Post by **halcyon** » Thu Mar 18, 2004 12:02 am

... but Zalman CNPS-7000xx cannot be ducted...

Trip · Post by **Trip** » Thu Mar 18, 2004 12:51 am

Also, the aerocool doesn't fight convection currents like most other heatsinks do - in a desktop setup like mine, that is.

halcyon · Post by **halcyon** » Thu Mar 18, 2004 1:28 am

Another promising review (in Finnish, but voltages/temps are self-explanatory):

http://www.finclockers.com/artikkeli.asp?id=128&s=4

Hmm... maybe I should try this...

halcyon · Post by **halcyon** » Sat Mar 27, 2004 12:04 pm

Review at PC Tweaks. Aerocool HighTower HT-101 wins the competition, inluding Thermalright SP-97 and Zalman CNPS7000Cu.

http://pctweaks.de/show.php?p=http://we ... r/2300.jpg
Now, let's see how the ThermalTake and Cooler Master versions of this kind of cooler shape up.

silvervarg · Post by **silvervarg** » Sun Mar 28, 2004 10:26 am

I wish they had used a normal CPU when doing these tests.
Still it gives a good indication of the performance the HT-101 is capable of.
Has anyone seen a review where they include the HT-101 and the DP-102?
They are both from the same company, with the only fundamental difference that the older DP-102 has a single fat heatpipe in the middle and the HT-101 has multiple smaller heatpipes near the edges.

Trip · Post by **Trip** » Sun Mar 28, 2004 10:36 am

http://www.viperlair.com/reviews/case_c ... 1/p2.shtml

overclocker's club commented: "If you’re looking for the best low noise cooler rivaling some heatsinks with much louder fans you can’t beat the HT-101. If you plan on using a Tornado or high CFM fan Aerocool’s DP-102 is better suited for you."

http://www.overclockersclub.com/reviews ... -101_3.php

EDIT: the HT-101 looks like it allows air to flow more easily

silvervarg · Post by **silvervarg** » Sun Mar 28, 2004 10:48 am

Thanks for the links to the great reviews. It seems that the difference is marginal at most. From the results I would guess that the biggest difference is that the HT-101 has a shroud that aids cooling.
I have already build a shroud (and more) for my DP-102.
I wonder why they left the single fat heatpipe...

Trip · Post by **Trip** » Sun Mar 28, 2004 10:53 am

I was looking at that too. I'll bet the superconducter pipe was better at transferring heat but restricted airflow just a little more.

Trip · Post by **Trip** » Sun Mar 28, 2004 10:59 am

AeroCool recommends a blow-blow configuration for the DP-102 so air is supposed to come out the sides. The HT-101 is actually designed for ducting air from front to back - but also has an opening in the middle of the shroud (for blow-blow), so that'd need to be covered to prevent air from escaping back into the case.

silvervarg · Post by **silvervarg** » Mon Mar 29, 2004 5:48 am

I have also read that they recommend a blow-blow setup for the DP-102. I find that very strange. It does not seem locial to my common sense and my limited aerodynamic knowledge. Also practical tests show that the DP-102 performs better with blow-suck that blow-blow setup even without a shroud.

Any more normal setup will probably just have a single fan, or in my case no direct mounted fan at all.