PCI Fan, urgent.

[Nashsafc]

i want to put a pci fan next to my graphics card blowing air into the case rather than out of the case. These PCI fans come with 4 pin molex connectors and have just 2 wires, the black and red. In that case, is it possible for me to solder the wires in opposite places so that the fans are blowing in the opposite direction(blowing air into the case). I need this because my case does not have side vents. I have another PCI fan next to my processor and the processor's fan is faced right towards the pci fan where the fan exhausts the air out, it is very effective at cooling. The 120 mm fan has been turned aorund so that air is blowing inside the case and air is being exhausted outside the case by the PCI fan. But in this case, the graphics card has it's own air blowing out system and i need something to blow cool air at it.

 

[JackNaylorPE]

I assume you mean one of these things:

http://www.antec.com/Believe_it/product.php?id=ODY=

Time for a new case methinks. Or .... can you take the side door off, use a hole saw to cut a hole and put a real fan in so it looks like this

http://www.antec.com/Believe_it/product.php?id=MjEyMQ==

Parts can be bought here:

http://www.frozencpu.com/cat/l1/g47/Fan_Accessories.html?id=bFbramYD

In the short term, ya might wanna grab one of these and take ya side panel off.

http://www.vornado.com/ProductDetail.aspx?ISC_Category=Compact+530

 

[Nashsafc]

Are you telling me you can't switch the direction of a pci fan blowing? They run on 4 pin molex but only use 2 pins of the 4 pin and 2 wires. Can i not switch their positions, i am not getting a new case and i'm not doing any modifying. I am only preapred to modify a PCI fan. So they don't run like motors then, if you run power one way the motor will work right, if you power it the other way the motor will work to the left?

 

[Nashsafc]

A fan must be able to run backwards, especially molex pin fans, i know the 3 pin motherboard connections definately don't allow the fans to run backwards. I'm not a noob or naive lol, i'm not going to spend loads on a fan that looks nice, a basic hand fan will do the job but i'm not taking the side panel of anyway. It just needs very simple adjustments, there is space inside the case, and the case has windows instead of air vents unfortunately, there is lots at the back and also a vent at the fron though. The cpu is cooled very sufficiently, i have it 1 degrees above room temperatre this being a phenom ii 720 overclocked. It's just the GTS 250 needs to be cooled.

 

[jedimasterben]

So you want to switch the power and ground wires to change fan direction? Good luck.

Motors don't work that way. Input power is input power, the ground is the ground. These can't be switched without possibly destroying it.

You'll have to take out the fan and turn it around to make it blow in the other direction, which probably won't do what you're thinking it will. You'd be better off taking a dremel and cutting a fan slot in the side of your case.

 

[jedimasterben]

The cpu is cooled very sufficiently, i have it 1 degrees above room temperatre this being a phenom ii 720 overclocked. It's just the GTS 250 needs to be cooled.

How in hell did you manage that on air??

 

[Nashsafc]

it's not overclocked much, it's overclocked to 2.9ghz lol. When i'm doing bot all (nothing) it reads 24 degrees i suppose thats 3 degrees above my room that is sometimes at 21 degrees. I have a 120 mm fan and 80mm fan blowing at it. So you're saying that i can't switch positions on the wires of the fan.

 

[Nashsafc]

are there not fans available that blow air into the case, that fit into the PCI slot?

 

[Nashsafc]

actually i think taking the side panel of the case anyway only gives the card 5 less degrees. Does the PSU blow air into the case or take it out? The psu is right above my graphics card in my case and there is a pci fan facing against the GPU to exhaust hot air from the cpu out. I think my GTS 250 hovers around 47 idle. Goes up to 90 i think on load.
Could this and this be what i'm looking for? Something which works like these two products?

http://www.kustompcs.co.uk/acatalog/info_2808.html
http://www.kustompcs.co.uk/acatalog/info_2820.html
http://images.google.co.uk/imgres?imgurl=http://www.kustompcs.co.uk/acatalog/2820.gif&imgrefurl=http://www.kustompcs.co.uk/acatalog/Kustom_PCs_Shop_Misc___Blowers_99.html&usg=__t-1h8MOwtEsLS7TFiYBaHqS7jns=&h=90&w=110&sz=5&hl=en&start=16&um=1&tbnid=r65Dydx4fiRPOM:&tbnh=70&tbnw=85&prev=/images%3Fq%3DLian%2BLi%2BBS-03%2BBlower%2BFan%26imgtbs%3Dz%26as_st%3Dy%26hl%3Den%26sa%3DG%26um%3D1

 

[jedimasterben]

Well, do you feel air coming out of the back? All of the ones I know of blow air out, so most likely.

So you have a PCI fan below the CPU that is blowing out? Heat rises, so it's not taking anything from the CPU. The CPU's heat is rising up into and out of the power supply, so that PCI fan isn't doing much.

 

[Nashsafc]

It is. Oh it is alright, surprising as it may seem. I put my hand near the pci fan and in times of cpu intense moments i feel a lot of hot air being exhausted by my evercool ballistic missile, when the processor is not doing much though i feel cold air being blown out of the case by the pci fan. Someone recommended me to turn the 120mm fan the other way at the top, so that it was pushing air inside the case, and yes it has made a difference and cooled my cpu down by 5 degrees. But i'm talking about the gpu. Please lets not go off task. i have an ecute cube case so that's something you can look at. Please help me try to find a cooler like this antec cooler third link i gave but uses one pci slot. Thanks

 

[Nashsafc]

also help me with this one, i'm confused i don't know whether it means it is blowing air in or out of the case.

http://cgi.ebay.co.uk/PCI-Case-Slot-Video-VGA-Card-Cooler-Cooling-Blower-FAN_W0QQitemZ230329096021QQcmdZViewItemQQptZComputing_ComputerComponents_Fans_Heatsinks_SR?hash=item35a0af1755&_trksid=p3286.c0.m14

It says "Provides fresh air to your VGA card" but i don't know because i have seen many of these look a likes and they say the blow air out.

 

[Nashsafc]

i suppose you could say there is kind of a vent at the back of the case, i havn't taken up all the pci slots, and they have holes in them, can this count as some sort of ventilation, plus the psu is right above the graphics card exhausting hot air out, it's not the exhausting of hot air out i'm worried about it's that there is not enough air being blown in.

 

[JackNaylorPE]

A PCI fan is a design compromise from the getgo. It's kinda making the best out of a poor situation. Normally, when you want to reverse air flow with a fan, you just turn the fan around. A fan's blades, if designed for optimization of flow and noise, will have fan blades which are curved or otherwise optimized for flow in one direction. In these PCI things, the interior of the device is also designed for flow in one direction. When reversed these optimizations will decrease fan efficiency.

If you've named your case, I have missed it. But many vendors sell side panels with windows, panels with fans and side panels with a fan in the window.

 

[Shadow703793]

it's not overclocked much, it's overclocked to 2.9ghz lol. When i'm doing bot all (nothing) it reads 24 degrees i suppose thats 3 degrees above my room that is sometimes at 21 degrees. I have a 120 mm fan and 80mm fan blowing at it. So you're saying that i can't switch positions on the wires of the fan.

No way. Even the best of the WCing set ups can only go 3-4C above ambient. What are you using to report temps?

 

[Nashsafc]

I'm checking out speedfan, OCCT, hardware monitor (by cpu-z), NVIDIA monitor. I know it sounds odd, right, there are two readings, one is core reading and there's another which is cpu reading. The core reading hangs around 26 `c at idle. At load it goes up to 34 `c. hmm so this is an odd reading? I am definately not lying, the monitors are genuinly telling me this. I have updated my bios and before the monitors were telling the same thing. Anyway, regarding the gpu and cooling issue is over, doesn't matter too much. Do any of you people know if there is a similar cpu cooler just as big as the Arctic Freezer 64 pro, but with a thinner fan, using a 25mm fan, but the heatsink just being as thick as the arctic freezer's. It has to be for AM2+ socket.

 

[Nashsafc]

I think the phenom ii 720 complements a htpc gaming rig well, games don't really use more than 2 cores or 3 cores, the phenom ii 720 is quite a cool (temperature) processor as well and comes clocked reasonably high, and my motherboard accepts cpus ap to 95 watts. So i'm up to my best on this computer except i can still upgrade the graphics card as long as the pci power connectors are all at the front of the board, the 4890 is like this, i could possibly change to that sometime. Just can't do SLI lol, so can't get 2 GTS 250s.

 

[Nashsafc]

this is not my exact case, but it gives yyou a good idea of what it looks like.
http://media.photobucket.com/image/ecute%20case/nero041001/MISC/P1010319Small.jpg

Here is a more detailed view of it

http://images.google.co.uk/imgres?imgurl=http://www.mods-n-clocks.co.uk/ocblog/ecute1.jpg&imgrefurl=http://www.mods-n-clocks.co.uk/%3Fp%3D12&usg=__RBYjVtojCU_yHtqqXStB5PZwYnE=&h=384&w=512&sz=43&hl=en&start=1&um=1&tbnid=njHhgeOV7fFw1M:&tbnh=98&tbnw=131&prev=/images%3Fq%3Decute%26hl%3Den%26sa%3DG%26um%3D1

And full size picture

http://www.daventec.co.uk/images/ev-nov-ecutbw1.jpg

It also has a air vent at the front, above th handle, which has a curved design which allows air to pass through. There is space for a fan at the front, which i have just ordered. My computer currently is beefed up with LED fans and UV light tubes.

 

[chef7734]

What you could do is create a negative pressure airflow with more exahust fans which would draw in air from all the holes and spaces in the case. you could use centrifuge blowers in the pci slots to create the pressure. Other option is gut fan holes in the acrylic and mount fans blowing in.

 

[Nashsafc]

i don't know where to get the drilling appliaces from lol. I can drill, it's just that i don't want to go out and buy a drill just to do this job, because i won't use it again most likely. Do you know if there are places i can take it out to get drilled for me for a price.

 

[chef7734]

i don't know where to get the drilling appliaces from lol. I can drill, it's just that i don't want to go out and buy a drill just to do this job, because i won't use it again most likely. Do you know if there are places i can take it out to get drilled for me for a price.

You can check with local machine shops locally or just do a negative pressure case.