80mm vs 120mm

bratton · 07-03-2006, 06:22 AM

case 1 http://www.xoxide.com/x-ventilator-case-black.html
case 2 http://www.xoxide.com/xoxide-turbox-case-silver.html

How does case 1's front 1x120mm and rear 2x80mm compare to case 2's front 1x80mm and rear 1x120mm? Or can I just buy the first case, throw 3fans in, and be happy?

bball4life · 07-03-2006, 06:47 AM

It's all gonna depend on how many cfm's the fans are pushing through. Oh and case 2 can take 2 80mm in the front you would just have to buy a second one and stick it in there. Just make sure if you get that second case, get a fan in the back it doesn't come with one for it. Normally 120mm fans are better since they push more air through, but like in that first one you can put 2 80mm in the front and 2 80mm in the back, I would go with the first one, no real reason why.

bratton · 07-03-2006, 01:38 PM

as long as it doesnt really matter

MagGoT_4_liFE · 07-04-2006, 07:42 AM

fyi, those cases look so good.....I might go and buy the first one (I like it better) XD and btw i don't really think it matters, but ask yourself this, "Would I want to push more cold air in, or more hot air out?" (In my expirence, the front fans are the intake ones, but I've seen setups where its the other way around.)

bratton · 07-04-2006, 07:51 AM

thats the main question i was trying to figure out; which is better: sucking more cold air in, or blowing more hot out?

I am also going to buy the first case. I was actually going to drive over to their office today, but found out that they don't support walk-in customers. Fortunately shipping is only $10 instead of the only case I found suitable on newegg for $17 shipping.

**The_Other_One** · 07-04-2006, 08:53 AM

Blowing air out is typically better, at least from what I've seen with my cases. And for the best size, 120mm is the best choice. They can push MUCH more air at lower revs. Of course, though, not all 120mm fans are better than 80mm.

bratton · 07-04-2006, 09:01 AM

Unfortunately, the case I'm getting only fits 2x80mm rear. In this situation, like maggot mentioned, could I simply suck in from the back with the 80mm's, and blow out the front with the single 120mm (with proper efficiency, of course)?

Fans:
http://www.newegg.com/Product/Produc...82E16811999127
http://www.newegg.com/Product/Produc...82E16835150007

EDIT: I think I'll just play around with intake/output once I get the system running. Maybe I'll cut into the case to put a fan on top, or see if I can mod a 120mm into the rear. ... or maybe I'm worrying too much. haha

MagGoT_4_liFE · 07-04-2006, 09:02 AM

Actually, I think both play a vital role, but I belive the intake is a little more important because (I think…) the tempature can be cooled faster with more cold air in then trying to push it all out. On my case, I got sooo many fans, 120mm in the back for output, 2 80mm fans in front for intake, 1 80mm fan on the door for intake (because i've noticed that I get a draft in sometimes from my roomdoor which hits my pcdoor, which is cooler than the temp in my room, and one 80mm fan on the top of the case for output, and thats not even counting the vidcard fans/hs, the cpufan/hs, or the psu fans. But thats just me. [also note this is on my oc'd system (CeleronD336) w/ 2 nVidia 7600GTs (sli mode...duh...)] Crazy eh? If i didn't have those, the temp inside is 90C+, but w/ them its only 60c+. (I also have them REALLY high)

inclemental · 07-04-2006, 10:52 PM

WHEN EXHAUST LARGER THAN INTAKE:
it creates vacumm inside the case since more air are sucking out of the case then getting into it. Once vacumm is created, more air will be sucked in from the gaps of the case to equalized the air flow between exhaust and intake. The inside temp will be lower since more hot air is pushing out of the case.

WHEN INTAKE IS LARGER THAN THE EXHAUST
more cold air is sucking into the case, but less hot air getting out of the case. Since the exhaust rate is slower than the intake rate. the excessive air inside the case will circulate inside the case and some air will draw back to the front. it will slow down the intake airflow. also less hot air will be push out.

the optimal soultion will be bigger exhaust fan mounted on the higher position of the case since hot air flows on top and smaller intake mounts at the bottom for cold air

jp198780 · 07-05-2006, 02:50 AM

go with the 120.

07-03-2006, 06:22 AM	#1 (permalink)
bratton Gold Member Join Date: Jun 2006 Location: PA Age: 19 Posts: 343	80mm vs 120mm case 1 http://www.xoxide.com/x-ventilator-case-black.html case 2 http://www.xoxide.com/xoxide-turbox-case-silver.html How does case 1's front 1x120mm and rear 2x80mm compare to case 2's front 1x80mm and rear 1x120mm? Or can I just buy the first case, throw 3fans in, and be happy? Last edited by bratton; 07-03-2006 at 06:42 AM.

07-03-2006, 06:47 AM	#2 (permalink)
bball4life Diamond Member Join Date: Jun 2006 Location: Somewhere.... Posts: 1,423	It's all gonna depend on how many cfm's the fans are pushing through. Oh and case 2 can take 2 80mm in the front you would just have to buy a second one and stick it in there. Just make sure if you get that second case, get a fan in the back it doesn't come with one for it. Normally 120mm fans are better since they push more air through, but like in that first one you can put 2 80mm in the front and 2 80mm in the back, I would go with the first one, no real reason why. __________________ Fold To Cure Team 12912 AMD 3700+ San Diego (@2.75) I A8N SLI premium I 1 GB OCZ Gold PC3200 (@460 2-2-2-5) I 160GB Seagate HDD I EVGA 7900GT KO (@550/1800) I Seasonic S12 600W SLI PSU I Audigy 2ZS I MX3100 Mouse/Keyboard I Logitech x5300 I Dell E193FP 19" LCD I Black Aspire X-Cruiser Macbook I 2.0GHz Yonah I 1GB RAM I 80GB HDD

07-04-2006, 08:53 AM	#6 (permalink)
The_Other_One Super Moderator Join Date: Mar 2005 Location: Lexington, NC Age: 23 Posts: 12,368	Blowing air out is typically better, at least from what I've seen with my cases. And for the best size, 120mm is the best choice. They can push MUCH more air at lower revs. Of course, though, not all 120mm fans are better than 80mm. __________________ Desktop * Athlon X2 4200 \| 2G RAM \| 160G HD \| 7600GT Laptop1 * C2D T5550 \| 3G RAM \| 120G HD \| Intel x3100 Laptop2 * C2D T5250 \| 2G RAM \| 160G HD \| Intel x3100

07-04-2006, 09:01 AM	#7 (permalink)
bratton Gold Member Join Date: Jun 2006 Location: PA Age: 19 Posts: 343	Unfortunately, the case I'm getting only fits 2x80mm rear. In this situation, like maggot mentioned, could I simply suck in from the back with the 80mm's, and blow out the front with the single 120mm (with proper efficiency, of course)? Fans: http://www.newegg.com/Product/Produc...82E16811999127 http://www.newegg.com/Product/Produc...82E16835150007 EDIT: I think I'll just play around with intake/output once I get the system running. Maybe I'll cut into the case to put a fan on top, or see if I can mod a 120mm into the rear. ... or maybe I'm worrying too much. haha Last edited by bratton; 07-04-2006 at 09:10 AM.

07-05-2006, 02:50 AM	#10 (permalink)
jp198780 Diamond Member Join Date: Mar 2006 Location: Deptford, New Jersey Age: 18 Posts: 4,090	go with the 120. __________________ My computer:Amd x2 4200+@2.20ghz 1gb ram 200gb 7200rpm hard drive X1950XT xp home

07-03-2006, 01:38 PM	#3 (permalink)
bratton Gold Member Join Date: Jun 2006 Location: PA Age: 19 Posts: 343	as long as it doesnt really matter

07-04-2006, 07:42 AM	#4 (permalink)
MagGoT_4_liFE Silver Member Join Date: Jul 2006 Location: Boston, MA (6+1=7) WOOT Age: 18 Posts: 170	fyi, those cases look so good.....I might go and buy the first one (I like it better) XD and btw i don't really think it matters, but ask yourself this, "Would I want to push more cold air in, or more hot air out?" (In my expirence, the front fans are the intake ones, but I've seen setups where its the other way around.)

07-04-2006, 07:51 AM	#5 (permalink)
bratton Gold Member Join Date: Jun 2006 Location: PA Age: 19 Posts: 343	thats the main question i was trying to figure out; which is better: sucking more cold air in, or blowing more hot out? I am also going to buy the first case. I was actually going to drive over to their office today, but found out that they don't support walk-in customers. Fortunately shipping is only $10 instead of the only case I found suitable on newegg for $17 shipping.

07-04-2006, 09:02 AM	#8 (permalink)
MagGoT_4_liFE Silver Member Join Date: Jul 2006 Location: Boston, MA (6+1=7) WOOT Age: 18 Posts: 170	Actually, I think both play a vital role, but I belive the intake is a little more important because (I think…) the tempature can be cooled faster with more cold air in then trying to push it all out. On my case, I got sooo many fans, 120mm in the back for output, 2 80mm fans in front for intake, 1 80mm fan on the door for intake (because i've noticed that I get a draft in sometimes from my roomdoor which hits my pcdoor, which is cooler than the temp in my room, and one 80mm fan on the top of the case for output, and thats not even counting the vidcard fans/hs, the cpufan/hs, or the psu fans. But thats just me. [also note this is on my oc'd system (CeleronD336) w/ 2 nVidia 7600GTs (sli mode...duh...)] Crazy eh? If i didn't have those, the temp inside is 90C+, but w/ them its only 60c+. (I also have them REALLY high)

07-04-2006, 10:52 PM	#9 (permalink)
inclemental New Member Join Date: Dec 2005 Posts: 14	WHEN EXHAUST LARGER THAN INTAKE: it creates vacumm inside the case since more air are sucking out of the case then getting into it. Once vacumm is created, more air will be sucked in from the gaps of the case to equalized the air flow between exhaust and intake. The inside temp will be lower since more hot air is pushing out of the case. WHEN INTAKE IS LARGER THAN THE EXHAUST more cold air is sucking into the case, but less hot air getting out of the case. Since the exhaust rate is slower than the intake rate. the excessive air inside the case will circulate inside the case and some air will draw back to the front. it will slow down the intake airflow. also less hot air will be push out. the optimal soultion will be bigger exhaust fan mounted on the higher position of the case since hot air flows on top and smaller intake mounts at the bottom for cold air

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