Adding a fan?

[Mandlf]

My case has 1 fan. I have a CoolerMaster DP5-6H51 HSF on my Tbird 900 (with Arctic Silver). My mobo (EPoX 8KTA3) has a HSF on the Northbridge. CPU runs 44-46C idle at 7x133. Should I get a better HSF or add a second case fan, or both? Are there case fans that you can add to any case without cutting/drilling?

 

[Duvie]

Give us a little more specs on HS...How many rpms? How much cfm?
I have a coolermaster(don't know the model off top of head) on a tbird750@840 and it runs around 7200-7400 rpms and cpu temps are 32-33 idle and 37 full load, but i also have 4 case fans, also you have a 900 and the faster the chip the more heat it produces.


What are your mobo temps like? This will tell you if case air is way to warm? should be in the mid to upper 20's celsius.

Where is that one fan? Exhaust or intake? Definitely should have at least two anyways, one exhaust one intake...

Unless your case temps are way high I dont see I huge temp decrease on cpu with case fans alone...maybe 4-6 celsius. So you may want to reapply artic silver after cleaning old stuff and try again before spending 20-30 bucks on a new one that might be a helluva lot louder with limited cooling...


I think with additional case fans. I like a side fan also, blowing on other heat producers such as HDD's or PCI cards. You can get cpu down to 40 idle and that is well within operating specs of the chip...

 

[Mandlf]

Here's the HSF specs. 4200 RPM, 15 CFM. Mobo temp is 26-27C. The one case fan is on the front panel, towards the bottom. It is intake. The mobo has pin headers for additional fans, I just don't know how/where to mount, or if that's the problem at all. I do know that I have reapplied the Arctic Silver a few times now, and I have cleaned it off the HS, but not the core. It's ok to use acetone on the core?

 

[Duvie]

Mandlf,

first, the rpms and subsequent cfm is too low for the heat of that cpu, did you pull that off of another chip? Get a fop32...Decent, peeps around here love it...you will double the cfm and rpms should go up to 7000. Will be louder but no to bad.


second, mobo temps look ok...case fan will take that down a few.

third, get a 80mm exhaust fan for the upper rear of case to help expell the heat the cpu hsf is blowing onto mobo and other parts...want good circulation...stagnant air is warmer air...get a panaflo with the standard powersupply connector.

fourth, don't us nail polish remover (often contains other ingredients). Use pure acetone or basic rubbing alcohol with q-tips or cotton balls.

 

[ericd]

Duvie please don't give out information unless you know what you are talking about. The only 7000 RPM fan that I know of is the Delta "Black Label" which runs at sound levels that most people call "unbarable" or may say something to the effect of "damn that thing sounds like a hair dryer". You have to be insane to actually use that fan for long periods of time. 4200 RPM is actually a very good number for a 60mm fan. Most fans in that RPM range put out about 20-25 CFM which is enough to handle a non-overclocked processor with a decent heatsink. However after looking at Coolermaster's own specs I noticed that they only rate the fan at 15 CFM considering that this is a 32dBA fan I think that this is pathetic. There is a YSTech fan that matches that fan's output and yet is 10dBA quieter. Now to actually answer the question at hand. Yes there are fans that don't require cutting, you can see an example of just such a fan here (bottom of page, the cyclone blower).. This would definitly help some but I think a new heatsink would do more for you. I would suggest the Taisol 742092 because it cools very well and doesn't cost very much ($23.95 here.). That would be my suggestion but others might have different ideas.

Eric

 

[Mandlf]

Thanks. I see there is some dissent. I wonder why AMD would approve the DP5-6H51 for up to a Tbird 1Ghz? That's why I got it. I will check out the Taisol. Have heard good things about them.

 

[Duvie]

ericd,

Listen you jack-a**, I have a coolermaster on my mobo right now and two different programs are telling me my fan is running at 7200 rpms right now (mobo sensor could be lying to those programs, dunno)...I have no temp problems I am speaking with knowledge of my situation...
Funny my heatsink seems to be taller than most of the pics on their site and fan doesn't look like that.

My only mistake is I may have have mis spoken on the specific rpms of the fop32 (since I do not own one or have used one), but I am sure the cfm is nearly double of the 15 cfm he listed (I think I heard someone mention 26cfm in another thread)...

 

[Link]

I must be beyond insane. I've been running FOP38 for over 3 months, plus 2 extra case fans.

 

[ericd]

I appologize Duvie I was too harsh in my previous thread. I also didn't know that you were getting those RPM numbers from somewhere. I believe that those readings MUST be false due to the fact that the highest RPM rating that coolermaster lists is 4500 RPM (that I found anyway). The RPM of the fan on the FOP32 is 4500 +/- %15 according to GlobalWin but as always your mileage might vary. I want to appologize to you again Duvie because I didn't mean to offend you by my comments I was just trying to make sure that everyone double checks what they post so that a lot of misinformation doesn't get posted, so again I apologize.

To answer the question about why AMD would certify that heatsink. The answer is actually quite simple. From what I have been told the "AMD Certified" rating doesn't actually mean much as far as performance goes. All that it means is that it:

1. sits level one the rubber pads to prevent core damage
2. has enough pressure in it's clip to compress the pads enough that the heatsink makes contact with the processor

You also have to keep in mind that the Athlon is rated to run at up to something like 80C so it doesn't take the best cooling to keep it within spec.

If anyone has any information in contrary to anything I have said please let me know, I always prefer being corrected to staying wrong.

Eric

 

[Mandlf]

Very interesting. Good information. I guess AMD isn't thinking about OC'ing. I agree Eric, that it's important to keep bad information out of the forums, but I can't blame Duvie if his info was founded. Anyway... my goal is to run my TBird 900 at 133 FSB, whether it's 7.5x for 1 Gig, or 8x for 1.06. I'm not sure how great a HSF I need if I can run stable at 50C I'll probably be ok. I was able to get my EPoX 8KTA3 to 1 Gig at 51C full. I'm not shooting for the moon. I see the Taisol is 80mm wide which is quite a bit bigger than tha CoolerMaster. This mobo is kinda tight around the socket with big capacitors and heatsinks all round.

 

[Duvie]

Sorry Eric, I was a little rough too...I wounder why I am getting false readings...I am checking to see if this might be a problem with the monitor on the biostar mobo...

Eric I apologize to you, I have a Super Cooler not a coolermaster and Thompson Computer Warehouse told me 7000 rpm is the spec for that, I have to do some research on the cfm...They tested and recommend it up to the 1.2gig...They said they like it because it is "idiot proof"

This was a 9.00 dollar HSF....