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Post Info TOPIC: case fans


Unreal Old Friend

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case fans
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alright this may be extremely nooby to be asking, but could case fans help for when i overclock my processor? my processor gets up to 58°c when playing a game and 45 when idle. i currently only have one case fan which is exhaust. i am planning on doing a 20%-30% overclock and i need to get this temperature down before i proceed. anyone have advice on the setup of the case fans i should have? will having more help? i was thinking maybe 1 on top, 2 on the side, and 2 more exhausts in the back. will that work?



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on a "global" view, yeah sure adding a fan will improove temperatures, but if u already have a fan to exhaust hot air it mean u already have an airflow in your case and it mean too that the improvement will not be that huge, though you will grab some degrees...

about the fan "organisation" yeah , back & top are usually used to exhaust hot air , and door lateral panel, bottom and face to intake air ....some high end case have in add a fan on the other side panel to refresh the cpu socket....this is just logical as hot air is always going up...this is how should work the main airflow....secondary objectives are to give fresh air to the psu to breathe and to "refresh" the gpu with the door side panel fans....

adding a case fan improove all temperatures, NB, SB, GPU, PSU, RAM, and of course CPU...

imo if you re running the stock CPU cooler the best option to get a big drop down on temperatures if OC is the target is to buy a custom cpu cooler...depending of what choice allow your case "rooming" and your budget, you ll see decent, big or huge improvements...

if u can show a link or a pict of your case ...or relink us on ur rigs infos if i missed em...(lol too much OC forums leads to memory failures   )

and to provide a more accurate and usefull answer it had be better to know: what cpu ? amd? intel? what cpu cooler? stock?...and.... what the size of ur exaust fan?...héhé ...a decent answer requires @ least thoses infos

 



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Unreal Old Friend

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i had already had bought a custom heatsink however the reviews turned out to be lies. i dont remember the brand and model of heatsink i got, i suppose ill find out tonight or tomorrow when i open the case up to put in some fans. i have an intel core 2 duo 2.93ghz and i want to get it up to 3.8 or even up to 4,0 if its stable enough. my motherboards fsb is higher than the cpu so i dont have to worry about stressing it. i dont know the model name of the case but i can describe it. it has 2 additional case fan slots in the back, 2 on top, and 2 on the side. the 1 fan i have is a tiny built-in one which i dont think is helping very much. also its a tower case.

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well...i m not familiar with intel CPUs but i m not sure temperatures are that high @ 58°c....AMD normal limit is 62°c on the cores but i think intel cpu s limit is higher....
from 2.93 to 4.0 ghz is a pretty massive OC and IMO the secret is to have a solid case air flow and a top cpu cooling
tell us more when u ll open ur case, (case name and cpu cooler) cpu coolers can be nice on a cpu serie but un-efficient on others...

replacing the tiny fan by some decent sized ones will improove case temps for sure .... but tbh i seriously doubt u ll be abble to get such an oc without a very good custom cpu cooler (closed WC loop or top air like noctuas )

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calculating Pi by hand

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Which c2d cpu is this, X6800 or E7500?
E7500 is a 45nm and will probably easily hit 4GHz, as long as mainboard or RAM is not the bottleneck.

I had lots of core 2 duos but 45°C in idle is way too much. There is either no air flow at all and/or the cpu cooler is tinier than intels stock model or it is not mounted properly (e.g. too much or not enough thermal paste).



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Unreal Old Friend

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@blitz
Intel cpus have their lives shortened when they go above 61°c. this is why i need to work out some cooling cause im pretty close to that temp. like i said ill give you guys more details when i open her up tonight.

@malk
its an e7500. i do have a better heatsink than the stock one. with the stock one i was 50 at idle and 67 when playing ut2004. i suppose there is no airflow since i have no intake fans. also i dont think my motherboard will bottleneck as it is 1333 for fsb speed. not sure about the ram though. its ddr3 1066 8gb if i remember correctly.

also another question, what do i have to do with the ram when i overclock. ive been reading you gotta underclock it or even some sites are saying "1:1" something. im not really understanding it. can someone explain please?

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FSB x multiplier= cpu freq

u can overclock by increasing both values....FSB affect ram and multiplier dont...fsb is linked to lot of the mobo parts and affect em all, multiplier OCing is the simplest way to only affect cpu....

if u set the fsb too high it will push your ram outta their limits, so, you have to reset em manually "under" the max value

some cpus allow you to set the multiplier (black editions by AMD), others dont, + it depend of the mobo options too

all this on AMD boards ...lol....i hope it s not too different on intel rigs, but i ll not be too surprised if u had to do it only by increasing the FSB... 

 

....61°c? damn that s not a lot of room for OC as the idle temps are already high....i though intel chips of this type was ok for 75°c!....at least....i need to revisit my classics ashamed

 

i forgot to add: to verify if ur case is too hot inside, open the side panel and see if the temperature improves, if they improve by large margin you have ur answer and need to add some fan/fans biggrin



-- Edited by Bl!tz on Friday 25th of January 2013 09:06:13 PM

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Unreal Old Friend

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i get it now. thanks! and yea 61 was what i read on intel's site and i was surprsied as well. how much do you predict my temps going up by when i oc? will the case fans keep it decent? i mean i can actually feel the heat in all angles of the case and its pretty warm. really quiet too

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depend a lot of the kind of OC expected, Malk will tell you more about intel chips

imo you d better find the way to reach normal idle temps before going into ocing, add fans to the case or like malk said reseat ur cpu cooler if you have a doubt...because what happen in idle will for sure happen while pushing hard on oced cpu....best way to fry it haha

 

and dont forget to tell what case , what cpu aircooler and i d be interrested to hear what GFX (some are pure toasters in a case)....for the case if u dont know... just a lil pict... lol

 



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Unreal Old Friend

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my gfx card is an evga (nvidia) gtx550ti 2gb edition. give me a couple minutes ill take sone pics with my android and try to get them on here

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Unreal Old Friend

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Ok so I have probably the worst memory on the face of the earth (if you guys didnt realize already)... I was thinking of my old case when I was giving info. Ughh...

Anyways, there is one fan in the back (i got that right at least). There is no more room for rear exhaust fans. I have 2 slots on top, but I also have the heatsinks giant freakin wire pushing up against the top. -_- I have 2 on the side on the removable cover. there is one on the bottom but im not sure about it since im going to only raise the pc up with some wood and have a little tiny crack. would that make a good exhaust slot? With this bad news of no back fans, I do have some good news. I had discovered that my heatsink was not installed properly and was not screwed down completely. It was kinda hanging off a little. I fixed it and now I'm down to 35-38c idle. For some really bizarre reason... I'm still at 58c in-game... anyways. i got a few case fans. where should i place intake and exhaust. any help would be greatly appreciated. my heatsink is also a thermaltake since you guys were asking. i do not know the model name. it is a little bit bigger than the stock heatsink. also i have a giant mess behind my computer. could that be adding heat? anyways, here's some pics.













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-Broski


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cool thx for the picts

this case remind me some NZXT case, it seem u can have a decent airflow here, from the picts they are two possible sizes for your fans, probably 120mm & 140 mm...i d go for the max size each time it s possible, this way you ll have more powerfull "flux" (choosing a smaller size isnt that good imo because you have lot of holes around the fans killing the flow, though in some case like for cooling the cpu socket it s ok)

the top fans are the best way to exaust the heat , two 120 or 140 mm here is ok, i d add one fan on the face (HDDs & intake) and one on the side (GFX + intake)
if u want to go one step higher u can add another intake on the side panel or better on the bottom near the PSU

the top fans you can add outside the case with two grids to protect accidents...it s not very eycandy but it s efficient, and if u pick some fans with leds you get a sweet lighting for free in your room +.+

what u need to balance is the intake and the exhaust, keeping in mind that the psu= 1 x 120mm exaust and some gfx s with stock coolers = 80 to 120 mm

fe here possible solution is:

intake:
-face?1 x 120 possible normally on quite all cases
-bottom 1 x 140 (only intake here! hot air need to be badly forced to go down, i tested theses bottom intakes in 140 mm on zalman cases and they work nicely as they send the fresh air between the GFX cooling and the "road" to the CPU...)
-side 2 x 140mm

outtake:
-back= existant 120mm
-PSU=120mm
-top= 2x120mm
-GFX=80mm or nothing (cant really tell from the pict)

glad to hear u ve succed to reseat the cooler and get better result @ idle....how old is this cooling? from the pict i cant see anykind of heatpipes but only an aluminium dissipator....tbh i ll not replace any of the last stock cooling i ve seen lately by this one....and judging by your load temperatures i m not wrong
try to find the CPU cooler model and we will be able to confirm if he allow you some OC or not...

if u need advices on fans i bet we can help too, not to tell what exact model is the best but at least to prevent you to buy some of the ****s we ourselves have bought by negligence

only suggestions from personal adventures of course



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Unreal Old Friend

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Thanks a lot Blitz! I know someone who has some leftover fans and I'm gonna try those before buying anything. Gonna try to install and attempt overclocking today. I'll post back once i get some results good or bad.

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Unreal Old Friend

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www.newegg.com/Product/Product.aspx?Item=N82E16835200050

since they only add 80mm fans im gonna order some 120mms. i think im gonna get these. what do you guys think?

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-Broski


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lol...sorry , never heared of them , i tryed to google a lil but i found no infos, anyway at this price there s no real risk

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Unreal Old Friend

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Bl!tz wrote:

lol...sorry , never heared of them , i tryed to google a lil but i found no infos, anyway at this price there s no real risk


 i ordered 4 of them. i also decided to order a better brand of thermal compound. thanks!



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-Broski


Connoisseur of Bourbon!

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With your idle temps that high, with an aftermarket cooler installed, I'd definately say there's an airflow issue with ya case! What's happening is that hot air is probably circulating around inside your case and not getting pulled out efficiently. Pretty much your cooler is just sucking hot air back through the heatsink rather than cooler air.

The 120mm fans should improve the flow in your case quite nicely once setup correctly. As Bl!tz said, front and side(above vid card) fans are intake and rear and 'back top' are exaust! You effectively want to create a wind tunnel through your case! In my case the 'front top' is actually an intake and is has an exaust right next to it 'back top'. Bottom fans are generally intake.
Also make sure you have ample space within your computer desk's case area to allow the side fans to pull air in. From ya pics it appears you have about 1cm to 2cm gap which is OK. Any less than a 1cm gap may stifle airflow for the fans themselves. If this is the case use your spare bottom intake to pull air in.


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Unreal Old Friend

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i was planning on using a fan on the bottom but its going to be very difficult due to the fact that its a solid slab of wood my rig is sitting on top of. i also discovered earlier this week that the thermal grease i was using was crap. i just ordered some artic silver and some case fans. im going to use side and top with top being exhaust. ill post back when the items arrive and i get some results. thanks for the help! :)

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How tall are the feet on ya case? If they're at least 1cm then it should be fine!

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