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[Play3r] Thermalright AXP-200 review (HTPC/SFF heatsink) - Page 3

post #21 of 29
Hey, sorry to necro this thread but I was wondering if anyone had tried this heatsink with a SilverStone Sg13? I have a full sized PSU that I plan on using as a case airflow exhaust, which leaves me with 61mm for a heat sink. Im planning on getting this heatsink and ditching the fan so the build will just be using the PSU fan to pull air through the heatsink. I may down the line upgrade my PSU fan just to increase its longevity.

If the measurements line up as well as they do in my head (61mm clearance, 60mm heatsink), it should all look almost like it was designed to fit like this. Anyone have any opinions?
post #22 of 29
Quote:
Originally Posted by xpeterson View Post

Hey, sorry to necro this thread but I was wondering if anyone had tried this heatsink with a SilverStone Sg13? I have a full sized PSU that I plan on using as a case airflow exhaust, which leaves me with 61mm for a heat sink. Im planning on getting this heatsink and ditching the fan so the build will just be using the PSU fan to pull air through the heatsink. I may down the line upgrade my PSU fan just to increase its longevity.

If the measurements line up as well as they do in my head (61mm clearance, 60mm heatsink), it should all look almost like it was designed to fit like this. Anyone have any opinions?
The potential problems I see (playing devil's advocate here) are:
  • PSU fan being directly over cooler so fan is pulling air directly out of cooler
  • Fan speed control to CPU heat versus speed control to PSU heat.
  • Fan power being appropriate for both CPU cooler and PSU needs.
I think it is a definite maybe. tongue.gif Just need to make sure everything works together as needed. thumb.gif
post #23 of 29
Quote:
Originally Posted by doyll View Post

The potential problems I see (playing devil's advocate here) are:
  • PSU fan being directly over cooler so fan is pulling air directly out of cooler
  • Fan speed control to CPU heat versus speed control to PSU heat.
  • Fan power being appropriate for both CPU cooler and PSU needs.
I think it is a definite maybe. tongue.gif Just need to make sure everything works together as needed. thumb.gif

I've seen a few arguments for pulling air up thru low profile or stock heatsinks. The claim is that it's better since the components underneath get a fresh stream of cool air as opposed to being blown on by hot air. Also that blowing down sometimes cycles the same hot air thru the cooler multiple times as opposed to pulling which tends to create a single unified air flow motion. It seems to me that pulling would have less, but cooler air vs pushing would have more, but hotter air; however Im not very familiar personally having never really had a low profile heatsink before and not caring to mess with a stock cooler, so please correct me if I am mistaken.

The theory in my head is that the PSU (CX500M) has a fan that spins up faster when the PSU gets hotter, and when hot air comes in, the PSU will begin to heat up causing the fan to pull more air thru the heatsink. I think it should work similarly to how a CPU controlled fan would, but perhaps with a delayed reaction. At least I hope thats how it will work lol

In terms of power, the AXP-200 has wide gaps between the fins since its designed to be used with a low profile (not pressure optimized) fan. Because of this, the guys at fanlesstech seem to think it could cool a 35W cpu just via convection (http://www.fanlesstech.com/2013/06/exclusive-thermalright-axp-200.html). Im hoping with a fan at the front of the case and the PSU fan pulling up, that it could do the job for a regular CPU (probably not much room for overclocking but worth testing in increments).

Thanks for the points, please let me know if I am overlooking anything glaring as I am pretty new to building PCs (this will be my 2nd).
post #24 of 29
Quote:
Originally Posted by xpeterson View Post

I've seen a few arguments for pulling air up thru low profile or stock heatsinks. The claim is that it's better since the components underneath get a fresh stream of cool air as opposed to being blown on by hot air. Also that blowing down sometimes cycles the same hot air thru the cooler multiple times as opposed to pulling which tends to create a single unified air flow motion. It seems to me that pulling would have less, but cooler air vs pushing would have more, but hotter air; however Im not very familiar personally having never really had a low profile heatsink before and not caring to mess with a stock cooler, so please correct me if I am mistaken.

The theory in my head is that the PSU (CX500M) has a fan that spins up faster when the PSU gets hotter, and when hot air comes in, the PSU will begin to heat up causing the fan to pull more air thru the heatsink. I think it should work similarly to how a CPU controlled fan would, but perhaps with a delayed reaction. At least I hope thats how it will work lol

In terms of power, the AXP-200 has wide gaps between the fins since its designed to be used with a low profile (not pressure optimized) fan. Because of this, the guys at fanlesstech seem to think it could cool a 35W cpu just via convection (http://www.fanlesstech.com/2013/06/exclusive-thermalright-axp-200.html). Im hoping with a fan at the front of the case and the PSU fan pulling up, that it could do the job for a regular CPU (probably not much room for overclocking but worth testing in increments).

Thanks for the points, please let me know if I am overlooking anything glaring as I am pretty new to building PCs (this will be my 2nd).
I think you will be fine. Just wanted you to be aware of possible problems. I havne't used ASP-200, but used ASP-100 with it's little 100mm stock fan and was amazed how well it did.
Quote:
AXP-100 w/ TY-100 pushing in
Tested with i7 920 stock (130w CPU)
Handbrake @ realtime

Room ambient . Idle CPU; rpm; Cooler Exhaust. . 100% CPU; rpm; Cooler Exhaust . mobo; NB; Cooler intake*
21.5c . . . . . . . . . 33-34-35-31c 2400rpm 28.0c . . 67-68-67-66c 2400rpm . 39.5c . . 36c . . 51c
22.0c . . . . . . . . . 33-34-35-31c 2250rpm 28.0c . . 68-68-69-67c 2250rpm . 39.5c . . 36c . . 51c . . 30.0c
22.5c . . . . . . . . . 36-35-39-33c 2000rpm 30.0c . . 69-70-70-69c 2000rpm . 40.0c . . 39c . . 51c
22.5c . . . . . . . . . 35-34-38-33c 1750rpm 29.5c . . 72-73-73-71c 1750rpm . 43.0c . . 40c . . 54c
22.5c . . . . . . . . ; 35-35-39-34c 1500rpm 30.0c . . 76-78-77-75c 1500rpm . 47.0c . . 40c . . 57c
23.0c . . . . . . . . . 37-36-41-36c 1200rpm 31.0c; 39c & 46c mobo & NB

2400rpm is maximum rpm mounted pushing in
*Temperature of air 30mm above TY-100


I re-ran a couple of the fan pushing in tests. Intake air is much warmer than room ambient.. like 8c warmer!.

AXP-100 w/ TY-100 pulling out
Tested with i7 920 stock (130w CPU)
Handbrake @ realtime

Room ambient . Idle CPU; rpm; Cooler Exhaust. . 100% CPU; rpm; Cooler Exhaust . mobo; NB; Cooler intake*
21.5c . . . . . . . . 32-31-35-31c 2450rpm 26.0c . . 62-62-63-61c 2450rpm . 33.5c . . 34c . . 46c
21.5c . . . . . . . . 33-31-35-31c 2250rpm 25.5c . . 63-64-65-63c 2250rpm . 34.5c . . 37c . . 45c
21.5c . . . . . . . . 33-32-37-33c 2000rpm 30.0c . . 64-65-65-64c 2000rpm . 35.5c . . 34c . . 48c
21.5c . . . . . . . . 35-34-39-34c 1750rpm 28.5c . . 66-67-66-65c 1750rpm . 37.5c . . 35c . . 50c
21.5c . . . . . . . . 34-33-38-32c 1500rpm 27.0c . . 69-70-70-69c 1500rpm . 39.5c . . 34c . . 51c
21.0c . . . . . . . . 35-34-38-33c 1200rpm 28.0c; 34c & 47c mobo & NB

*I neglected to put a probe under cooler, sorry.
. 2450rpm is maximum rpm mounted pulling out


Running TY-100 pushing in and find the heat difference is because of air temperature over cooler / fan intake. Running at 2400rpm the air 30mm above AXP-100 is 28.5c with 22c ambient. That's with a TY-140 40cm away and 15cm above work top blowing 22c ambient over test setup. It also shows in the exhaust temp readings with TY-100 pushing into cooler.

Just goes to prove how much more important actual cooler intake air temperature is than what the room ambient temperature is.
post #25 of 29
Quote:
Originally Posted by doyll View Post

I think you will be fine. Just wanted you to be aware of possible problems. I havne't used ASP-200, but used ASP-100 with it's little 100mm stock fan and was amazed how well it did.

Thanks for that info! Really appreciate the help, I think Im gonna go forward with this project, based on what I've heard from a few different forums (basically: "I think it should work" and "eh" and "well, it probably wont collapse into a black hole"). If nothing else, I can always return the axp-200 and fall back on an AIO, I just wanted to have a portable rig with the fewest possible moving parts that could break, so I wanted to avoid liquids and pumps. Should be interesting to see temps tho.
post #26 of 29
Quote:
Originally Posted by xpeterson View Post

Thanks for that info! Really appreciate the help, I think Im gonna go forward with this project, based on what I've heard from a few different forums (basically: "I think it should work" and "eh" and "well, it probably wont collapse into a black hole"). If nothing else, I can always return the axp-200 and fall back on an AIO, I just wanted to have a portable rig with the fewest possible moving parts that could break, so I wanted to avoid liquids and pumps. Should be interesting to see temps tho.
I agree, avoid CLCs, and AIOs that are not CLC are to big to fit.

I suggest low profile RAM. AXP-200 will clear up to 38mm RAM under high part of fin pack which is about 48mm out from center of CPU. Most RAM sockets are more than 48mm from center CPU.
post #27 of 29
Quote:
Originally Posted by doyll View Post

I agree, avoid CLCs, and AIOs that are not CLC are to big to fit.

I suggest low profile RAM. AXP-200 will clear up to 38mm RAM under high part of fin pack which is about 48mm out from center of CPU. Most RAM sockets are more than 48mm from center CPU.

I have some hyperX RAM, I think they should fit. What orientation do you have your AXP set to? Im not sure if its better to have the fins parallel to the airflow or perpendicular to force the airflow around more of the mobo, also how important it is to put the base of the heatpipes in open airflow (seems like a bad idea to have these in a cramped space at the back of the case where very little air is moving around).

Also, I'm not exactly sure how these forums work, but you're being a huge help so if there's any way I can increase your rep on this forum, please let me know smile.gif
post #28 of 29
Quote:
Originally Posted by xpeterson View Post

I have some hyperX RAM, I think they should fit. What orientation do you have your AXP set to? Im not sure if its better to have the fins parallel to the airflow or perpendicular to force the airflow around more of the mobo, also how important it is to put the base of the heatpipes in open airflow (seems like a bad idea to have these in a cramped space at the back of the case where very little air is moving around).

Also, I'm not exactly sure how these forums work, but you're being a huge help so if there's any way I can increase your rep on this forum, please let me know smile.gif
Mine is using it's own fan and is AXP-100, so not relevant. I would fit AXP whichever way is most directly under the PSU intake vent.
post #29 of 29
Quote:
Originally Posted by doyll View Post

Mine is using it's own fan and is AXP-100, so not relevant. I would fit AXP whichever way is most directly under the PSU intake vent.

Thanks much for your help. It ended up working pretty well.



I like it, it looks compact and efficient smile.gif I have an i5 6500 in there and after a couple stress tests temps haven't gotten above 69c so far
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