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#1
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To Suck or Blow? That is the question :)
Ive got two pc cases and they dont seem much cop as the one im currently
using only has two spaces for 80 mm fans (which ive got) and what I can describe as aerated sides (must be great for dust protection (mind you the holes arent massive but up to 2-3mm wide). Neither has air holes at the front indicating space for a front fan. My Aopen case has a plastic housing with a blank circular space underneath the pc speaker, but again with out the holes I can only assume it cant be for a fan. (We are going back to rainbow & playschool days here, square doesnt fit circle It is a much meatier case than this budget job, but les me down for not having USB front connectors although im sure its easier enough to get a bracket to suit an empty 51/4 inch slot. Im wondering a) how to configure my 80mm fans as a consequence, and that maybe I should use on the the fans for side ventilation by cutting a circular space out of it and protecting from the outside somewhat directly adjacent to the cpu. Since my options are currently limited (and I didnt want to go mad with cooling, but be efficient as possible with what ive got, or get another fan or whatever). According to cooling guides you tend to have the front sucking and the back of the case blowing the air out. As I cant achieve that with no location at the front im wondering what the best solution is. Ive got these fans BOTH blowing mostly air BACK into the case (which I think is wrong usually, and besides makes for a bigger noise factor I think) and that seems to have dropped things a bit. I dont think pointed the other way round (blowing out the case) really makes a lot of difference without any fans at the front. Any creative ideas to help me achieve a good cooling solution? Thanks very much for your time Tony |
#2
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It really depends on the configuration of the case. As a general rule blow
cool air in at the bottom and hot air out at the top. This is more efficient because the hot air rises by itself. In at the bottom front and out at the top rear is the usual configuration and keeps the air moving in most of the case. If you have only two openings on the back and good side ventilation I would suggest blowing out as one in and one out will create a small loop of air flow and much of the case will have little flow. If you have only two hole on the back and poor side ventilation I would suggest blowing in and the PSU fan can blow it back out. My two cents Jim "Tony" wrote in message .. . Ive got two pc cases and they dont seem much cop as the one im currently using only has two spaces for 80 mm fans (which ive got) and what I can describe as aerated sides (must be great for dust protection (mind you the holes arent massive but up to 2-3mm wide). Neither has air holes at the front indicating space for a front fan. My Aopen case has a plastic housing with a blank circular space underneath the pc speaker, but again with out the holes I can only assume it cant be for a fan. (We are going back to rainbow & playschool days here, square doesnt fit circle It is a much meatier case than this budget job, but les me down for not having USB front connectors although im sure its easier enough to get a bracket to suit an empty 51/4 inch slot. Im wondering a) how to configure my 80mm fans as a consequence, and that maybe I should use on the the fans for side ventilation by cutting a circular space out of it and protecting from the outside somewhat directly adjacent to the cpu. Since my options are currently limited (and I didnt want to go mad with cooling, but be efficient as possible with what ive got, or get another fan or whatever). According to cooling guides you tend to have the front sucking and the back of the case blowing the air out. As I cant achieve that with no location at the front im wondering what the best solution is. Ive got these fans BOTH blowing mostly air BACK into the case (which I think is wrong usually, and besides makes for a bigger noise factor I think) and that seems to have dropped things a bit. I dont think pointed the other way round (blowing out the case) really makes a lot of difference without any fans at the front. Any creative ideas to help me achieve a good cooling solution? Thanks very much for your time Tony |
#3
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Hi thanks Jim,
I dont know whether the weather (sorry bit of a tongue twister) has anything to play in it (or fact my window is somewhat open too!), but im now stable at 40c and 25 case, and has stayed at that all throughout my typing this email. A good state. I am lucky from having a very aerated large room too, so I am sympathetic to those in overly-centrally-heated rooms. And ive only got a silent psu (absolutely minimal airflow I can feel coming from that), and with the side case on too. I've set BOTH my 80mm fans on the back BLOWING. They arent the loudest in the world fortunately only adding marginally to overall volume, not like those awful cheap psu's you get with cheap pc cases. Well under a pound each for each fan! (See ebuyer). What I HAVE done that has made a huge diff to airflow, is cut away some of the cheaply built slots that are a poor mans "fan cover" (just basically there are horizontal cuts in the case, which have been angled diagonally so that the airflow is shifted diagonally out of the case). Its a cheap case, and guess what this design just doesnt work. However with these slats cut away very amateurishly (needs some tidying up of sharp bits) seems to allow for so much more airflow. Still need to put some "finger guard" style minimalist fan covers over the pathetic covers at the back which were there before and that should be that.....since the side cover seems to allow enough sidewards flow of air from front of the case (surprised that it isnt filtered though and may need to look into putting a fine filter membrane on the side somehow (maybe even like a fine gauze type material). Tony "Jim" wrote in message t... It really depends on the configuration of the case. As a general rule blow cool air in at the bottom and hot air out at the top. This is more efficient because the hot air rises by itself. In at the bottom front and out at the top rear is the usual configuration and keeps the air moving in most of the case. If you have only two openings on the back and good side ventilation I would suggest blowing out as one in and one out will create a small loop of air flow and much of the case will have little flow. If you have only two hole on the back and poor side ventilation I would suggest blowing in and the PSU fan can blow it back out. My two cents Jim "Tony" wrote in message .. . Ive got two pc cases and they dont seem much cop as the one im currently using only has two spaces for 80 mm fans (which ive got) and what I can describe as aerated sides (must be great for dust protection (mind you the holes arent massive but up to 2-3mm wide). Neither has air holes at the front indicating space for a front fan. My Aopen case has a plastic housing with a blank circular space underneath the pc speaker, but again with out the holes I can only assume it cant be for a fan. (We are going back to rainbow & playschool days here, square doesnt fit circle It is a much meatier case than this budget job, but les me down for not having USB front connectors although im sure its easier enough to get a bracket to suit an empty 51/4 inch slot. Im wondering a) how to configure my 80mm fans as a consequence, and that maybe I should use on the the fans for side ventilation by cutting a circular space out of it and protecting from the outside somewhat directly adjacent to the cpu. Since my options are currently limited (and I didnt want to go mad with cooling, but be efficient as possible with what ive got, or get another fan or whatever). According to cooling guides you tend to have the front sucking and the back of the case blowing the air out. As I cant achieve that with no location at the front im wondering what the best solution is. Ive got these fans BOTH blowing mostly air BACK into the case (which I think is wrong usually, and besides makes for a bigger noise factor I think) and that seems to have dropped things a bit. I dont think pointed the other way round (blowing out the case) really makes a lot of difference without any fans at the front. Any creative ideas to help me achieve a good cooling solution? Thanks very much for your time Tony |
#4
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Make sure the case has positive pressure unless you want your computer box
to be a dyson. A postive pressured computer box will have less dust inside compared to a box with a low pressure, the dust will fall out of suspension just like the cyclone in the dyson cleaner. So blow blow and don't suck cause sucking sucks. "Gravity is a Figment of the Imagination The Earth Sucks" http://groups.google.com.au/groups?q...f+the+Imaginat ion+The+Earth+Sucks%22&hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=DH1IwD.MEM%40resntl. bhp.com.au&rnum=1 "Tony" wrote in message .. . Ive got two pc cases and they dont seem much cop as the one im currently using only has two spaces for 80 mm fans (which ive got) and what I can describe as aerated sides (must be great for dust protection (mind you the holes arent massive but up to 2-3mm wide). Neither has air holes at the front indicating space for a front fan. My Aopen case has a plastic housing with a blank circular space underneath the pc speaker, but again with out the holes I can only assume it cant be for a fan. (We are going back to rainbow & playschool days here, square doesnt fit circle It is a much meatier case than this budget job, but les me down for not having USB front connectors although im sure its easier enough to get a bracket to suit an empty 51/4 inch slot. Im wondering a) how to configure my 80mm fans as a consequence, and that maybe I should use on the the fans for side ventilation by cutting a circular space out of it and protecting from the outside somewhat directly adjacent to the cpu. Since my options are currently limited (and I didnt want to go mad with cooling, but be efficient as possible with what ive got, or get another fan or whatever). According to cooling guides you tend to have the front sucking and the back of the case blowing the air out. As I cant achieve that with no location at the front im wondering what the best solution is. Ive got these fans BOTH blowing mostly air BACK into the case (which I think is wrong usually, and besides makes for a bigger noise factor I think) and that seems to have dropped things a bit. I dont think pointed the other way round (blowing out the case) really makes a lot of difference without any fans at the front. Any creative ideas to help me achieve a good cooling solution? Thanks very much for your time Tony |
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