Search found 33 matches

by zak
Sat May 22, 2004 12:07 am
Forum: CPU Cooling
Topic: I can't understand why people stick to blowing CPU fans!!!
Replies: 89
Views: 33794

Hmmm with th eCPU fan in 'suck' mode, doesn't the motherboard miss quite some cooling causing the same burn-up effects as some watercoolers report?
by zak
Sun May 02, 2004 2:55 am
Forum: The Silent Front
Topic: Silent Dual Opterons?
Replies: 12
Views: 3680

Opterons

Opterons use registered memory. And for that reason, they do not support cool&quiet it seems. Sadly.

That said, and idling Athlon64 without cool&quiet is still cool&quiet!


Thomas
by zak
Fri Apr 30, 2004 11:40 pm
Forum: Video Cards & Monitors
Topic: Well guys I screwed it up
Replies: 8
Views: 3071

Shim

On my nvidia Ti4200, I filled the depression in the top of the chip package with a thin piece of aluminum that I cut from a single use dish. It may not be perfect, but it works a lot better than filling the gap with just paste. I wonder if this is a sloution for the 'ATI gap' as well. It will have s...
by zak
Fri Apr 30, 2004 11:36 pm
Forum: Video Cards & Monitors
Topic: ATi/nVidia need to rethink their heatsinks w/case air flow??
Replies: 6
Views: 2401

I keep wondering why the heat sink is on the 'wrong' side of the card. Thiswas inherited from PCI, which did it to be different from ISA so slots could be dual purpose. But not it means air has to be taken in through the pci cards, and it limits the space for the cooler. I realize that the current s...
by zak
Fri Apr 30, 2004 11:30 pm
Forum: Video Cards & Monitors
Topic: 8 mm tall CPU heatsink?
Replies: 9
Views: 3296

It seems thefan is directly behind an intake grille, is that correct? It may be hetter to use this. Plant a bit taller heat sink there and improvethe exhaust fan. The extra air taken in might give enough cooling to the card. That the fan is remote doesn't really matter. But be very carefulabout not ...
by zak
Mon Apr 26, 2004 10:20 am
Forum: CPU Cooling
Topic: Is this a quiet cooler for my A64 3000+?
Replies: 10
Views: 2222

Removing HS from A64

AMD writes to twist the heat sink until it comes off. The bottom should be flat for exactly this reason. This, and the high clamp force, are because thesocket is solered to the board surface; the socket does not have pins. Pulling forces on the socket might damage the solder; hence the pre-load - I ...
by zak
Tue Apr 20, 2004 1:36 pm
Forum: Fans and Control
Topic: Multiple resistor's in series to control fan speed?
Replies: 26
Views: 7733

Zeners in parallel

Zeners in parallel may o may not share current equally. If they are not identical, the one with the lowest voltage may get most of the current. It is better two put 2 in series instead (of half the voltag each). Aldo keep in mind that the diodes are supposed to dissipate the heat through the wires -...
by zak
Fri Apr 16, 2004 10:16 am
Forum: Fans and Control
Topic: Acoustiproducts Acoustifans: Review, Images & a Mod
Replies: 63
Views: 33301

Ideas for measurement

For noise, use a microphone. Doesn't need to be hi-fi; an omnidirectional electret will do fine. Mount the fan to be measured inside a hard, closed box, with no inside damping. The air flow will be a bit uneven, but this is probably realistic. Mount it in a decent way -maybe on a metal plate with yo...
by zak
Tue Apr 06, 2004 10:27 am
Forum: Cases and Damping
Topic: Designing the "perfect" case
Replies: 31
Views: 11763

I think that for a silent case you'd want to use a lot of plastic, dead sounding plastic at that. As for a fan guard instead of a stamped grill: this may be a problem with EMC, as a grill has fairly large openings. That can be changed of course, and a mesh of round wire clamped to the case might be ...
by zak
Sun Apr 04, 2004 2:02 am
Forum: CPU Cooling
Topic: AMD recommendation for A64
Replies: 3
Views: 1452

Paste versus pads

AMD 'changed its mind' because of the heatspreader and the socket. The XP chip is easily damaged. Using a pad helps to protect the chip. The A64 heatspreader is bigger. A pad will glue the heat sink to the heat spreader. Removal of the heat sink would need a lot of force. And the A64 socket is small...
by zak
Fri Apr 02, 2004 11:54 pm
Forum: CPU Cooling
Topic: AMD recommendation for A64
Replies: 3
Views: 1452

AMD recommendation for A64

From what I've read in AMDs information for the Athlon64, too much paste is bad because it will flow out and contaminate the socket. Nothing else. They actually recommend a 0.05 mm layer if I remember correctly. This is 'paper-thin' - but if it would not be pressed out it would be toomuch actually. ...
by zak
Sun Mar 21, 2004 11:16 am
Forum: CPU Cooling
Topic: [UPDATE P4 3.0@3.4]*pics* Ducted Sonata (with P4 2.66@1.55V)
Replies: 25
Views: 8010

Duct material

The duct looks like a loudspeaker bass port to me...


Thomas
by zak
Sun Mar 21, 2004 1:35 am
Forum: Cases and Damping
Topic: Dampen front of case, but maintain airflow?
Replies: 23
Views: 10207

Intake damping

A bent tube with damping material on the walls will let air in but not much sound out. There is often space in the bottom of a case to mount something like it. I have something simple in the Sonata: http://members.home.nl/jutezak/kast/gat.jpg http://members.home.nl/jutezak/kast/tunnel.jpg It doesn't...
by zak
Sun Mar 21, 2004 1:24 am
Forum: Cases and Damping
Topic: Avantech Terminator C001 - ducting here we come...
Replies: 1
Views: 1014

Another picture

c't has a picture with the door open. The door is on the right side of the case: http://www.heise.de/newsticker/meldung/45848 There is a 120 mm fan in front and in the rear of the tunnel. Drive mounting is interesting: vertically under the power supply. Hmm... if only they would offer some fanless h...
by zak
Tue Mar 16, 2004 10:33 am
Forum: Fans and Control
Topic: Splitting the RPM monitor lead off the Papst 4412F/2GL
Replies: 8
Views: 2841

7v trick

Indeed the '7 v trick' by wiring between +5 and +12 volt is evil. And the RPM monitoring will not work, as teh signal from the fan is a switch to +5 volt (while the MB expects a switch to ground, or, if you are unlucky, a signal between 5 volts and something higher. Much more sane is to put a zener ...
by zak
Mon Mar 15, 2004 10:35 am
Forum: Fans and Control
Topic: Running 120mm fans at 2.8v. Edit..now $30
Replies: 13
Views: 3595

DIY not for everyone

I didn't mean to say the fan controller is a bad deal; I just wanted to give a hint for people who like to tinker, or already have a case or a fan controller. I guess it is a matter of priorities, desires, and time what one ends up doing. I like DIY stuff because I always have parts around, but it i...
by zak
Sun Mar 14, 2004 8:59 am
Forum: Fans and Control
Topic: Running 120mm fans at 2.8v. Edit..now $30
Replies: 13
Views: 3595

Running fans at low voltage

A circuit to achieve something like this is not that hard to build - if the fan is reliable once started at the low voltage. I'd connect the - of the fan to ground. +5 volt from the power supply is fed through 1, 2 or 3 diodes (1N400x) to the + of the fan. Each diode drops approximately 0.6 volt. 3 ...
by zak
Sat Mar 13, 2004 1:28 am
Forum: Fans and Control
Topic: Good fan info on Japan Servo site
Replies: 0
Views: 686

Good fan info on Japan Servo site

I saw a supplier of 'Japan Servo' fans in the list of Google ads. Their products look interesting, to say the least. Thay have a nice application note on http://www.japanservo.com/digital/general/g_fab/index.html (click on the 'features' tab) that explains their innovations but also some generally a...
by zak
Sat Mar 13, 2004 12:51 am
Forum: Video Cards & Monitors
Topic: Question - How to remove the shim
Replies: 4
Views: 2349

Fill the gap

I'd also suggest using a shim of alimunim to fill the gap between chip and heat sink. It will not be perfect, using having an extra interface to fill with paste, but a lot better than filling a big gap gap with paste. I did this for the recessed metal piece in the top of GF4200 chip. I do not know i...
by zak
Thu Mar 11, 2004 11:42 pm
Forum: CPU Cooling
Topic: The myth of "too much thermal paste"
Replies: 55
Views: 24170

Mounting force

Indeed the 'clip force' is quite large these days. And expecially with the small surfae of a bare K7 chip, excess paste will be squeezed out without problem. To it looks optimal if both sides are "wetted" with paste to fill pores, and a small blob is put in the middle that will be squeezed out, thus...
by zak
Mon Mar 08, 2004 11:50 am
Forum: The Silent Front
Topic: Silencing a projector (slightly OT)
Replies: 11
Views: 16436

Bulb and...

Not only thebuld is aproblem - the LCDs like to be cooled as well or thy will melt and get very uneven. If you care about noise, get a projector that is not so nisy. It seems the 'home' models are less noise than those por presentation purposes. As far as that friend's Panasonic: It is very quiet, n...
by zak
Sun Mar 07, 2004 8:07 am
Forum: The Silent Front
Topic: Silencing a projector (slightly OT)
Replies: 11
Views: 16436

Projector noise

Projectors vary wildly in noise level (and features). A friend had a Sony, and exchanged it for a Panasonic. A lot less noise. Both were nice small devices. What may help as well is think where you locatethething. Sony on ceiling was not a good idea (no correction built in for that). Also keep in mi...
by zak
Mon Feb 23, 2004 1:53 pm
Forum: Video Cards & Monitors
Topic: EMERGENCY--heatsink free Radeon 9200
Replies: 2
Views: 1601

It will burn to death quickly. No leftover 486 era CPU heat sink available?


Thomas
by zak
Fri Feb 06, 2004 3:53 pm
Forum: CPU Cooling
Topic: wanting new hsf
Replies: 4
Views: 1398

The simple duct

The simple duct can be seen here: http://members.home.nl/jutezak/kast/cooler.jpg

Of course the material is only over the fan body and doesn't hinder the air flow from the heat sink.


Thomas
by zak
Thu Feb 05, 2004 2:50 pm
Forum: CPU Cooling
Topic: wanting new hsf
Replies: 4
Views: 1398

AMD64

There are not that many nice and big sinks available, and less even that use the standard clip for mounting. The AMD64 is not hot at idle, and the stock cooler isn't that noisy at full tilt either. A bit too noisy for my taste though - it is louder than cpu and case fans in the Sonata, even with qui...
by zak
Fri Jan 23, 2004 1:32 pm
Forum: Video Cards & Monitors
Topic: Why does this product not exist?
Replies: 2
Views: 1978

Turbulence

The difference with teh VGA silencer is that this cooler would fit any card hwere the heatsink fits as the tunnel can be but to work around obstacles. The reason I do not want a fan over the heatsink is the PCI slot. Not that I would miss it now, but it is the last slot left. Finally I think the tur...
by zak
Fri Jan 23, 2004 12:35 pm
Forum: Video Cards & Monitors
Topic: Why does this product not exist?
Replies: 2
Views: 1978

Why does this product not exist?

I would like to replace the cooler on my 4200ti, but the Zalman is a bit big and maybe not a good enough cooler. But this: http://members.home.nl/ttonino/airtunnel.gif might be okay. The hheatsink of a 1U CPU cooler may be low enough to not eat an extra slot, the airflow is much more efficient than ...
by zak
Fri Jan 23, 2004 2:28 am
Forum: Cases and Damping
Topic: Clearance between motherboard and PSU in Sonata
Replies: 3
Views: 1722

Clearance

It is hard to measure on a running system, but I doubt it is much more than a centimeter.


Thomas
by zak
Mon Jan 19, 2004 12:01 pm
Forum: Silent Storage
Topic: HD in elastic cord + results...
Replies: 3
Views: 1610

Ground wire

Older drives didn't have the case grounded to the board. Doing so would perhaps cause a ground loop. Then I had an IBM drive (0662, 1GB) that had little insulators around the screw holes. The case HAD to be insulated from the chassis in this one. I got or from storage last year and started it before...
by zak
Sun Jan 18, 2004 8:20 am
Forum: Video Cards & Monitors
Topic: Your opinion on the Vantec Iceberg 4?
Replies: 1
Views: 1543

It looks like a decent cooler. Lots of small fins, and relatively big. I'd guess it would be too loud on its own, but would run well if the fan voltage is lowered a little. Maybe removing the plastic plate would help, but probably not. I have a GF2400 with a cute cooler like on this picture: http://...