Search found 1270 matches

by silvervarg
Mon Feb 07, 2005 5:17 am
Forum: CPU Cooling
Topic: why no heatpipes making direct cpu contact?
Replies: 4
Views: 1638

The heatpipe coolers that use one fat heatpipe in the middle does basicly this. They may either let the headpipe go all the way down to the chip or they make have a thin part of the bas in between. I guess this depends on what works best in manufacturing. I use the DP-102 cooler that works like this...
by silvervarg
Mon Feb 07, 2005 5:05 am
Forum: Fans and Control
Topic: panaflo L1a and connector
Replies: 2
Views: 1246

If the fan is not changed it will not do any good to have an additional wire there. If the fan supports it the 3:d wire is used to send pulses to indicate the fan rotation speed. With a 2 wire fan you might need to cut off a small peice of plastic on the connector to make the connector physically fi...
by silvervarg
Mon Jan 31, 2005 4:53 am
Forum: Fans and Control
Topic: DIY fan controller
Replies: 2
Views: 2635

That's a nice and simple circuit you got. But unless you want to go below 5V for the fan you might as well buy a zalman fanmate. Cost around $5. The fanmate uses a voltage regulator, but what you have is almost the same but buildt from discrete components. I suggest that you either secure the box ve...
by silvervarg
Fri Jan 28, 2005 4:13 am
Forum: Fans and Control
Topic: Temperature difference between CPU and its heatsink
Replies: 3
Views: 1430

The probe is probably slow at reacting and dissipates very little heat in itself. That makes the contact point between the probe and the heatsink much less sensitive to good contact, so you can do fairly accurate measurment without thermal paste there. 65C on the heatsink is really hot. Dell are kno...
by silvervarg
Fri Dec 10, 2004 12:30 am
Forum: Fans and Control
Topic: How does distance of a ducted fan affect its effectiveness?
Replies: 2
Views: 1322

The distance does matter a little like Bluefront mentioned, but it does not affect it a lot. What matters more is if the duct has bends, if the inside of the duct is smooth, how well the ducts seals in both ends and also if vibrations in the duct itself will enhance the vibration noise from the fan.
by silvervarg
Fri Dec 10, 2004 12:24 am
Forum: CPU Cooling
Topic: Heatsink doubling
Replies: 5
Views: 1935

Greef, why do you want to run CPU fanless? Have you removed all other fans in the system already? The CPU is usually the hottest component in the system, so it needs a fan more than other components. Since the CPU is located in the middle of the machine, it is the easiest noise to reduce before it e...
by silvervarg
Fri Nov 12, 2004 2:22 am
Forum: The Silent Front
Topic: 8rdavcore/nf7vore: Software controlled undervolting!
Replies: 50
Views: 44417

It depends on what CPU you have if it locked or not. Older AMD CPU's are unlocked. AMD XP mobile CPU's are unlocked. Many other AMD CPU's can be modded to become unlocked. If you don't have this option you just have to change the FSB, and that means that you will slow down everything related to the ...
by silvervarg
Fri Nov 12, 2004 2:07 am
Forum: CPU Cooling
Topic: Silverstone nt01 - passive heatsink
Replies: 16
Views: 4185

The major problem with this heatsink is that it is made to fit 2*60mm fans, and there are no really good 60mm fans. (Read a lot more about 60mm fans in the fan section). So, you would be in for quite a lot of modding to get really good performance and silence out of this heatsink at the same time. I...
by silvervarg
Fri Nov 12, 2004 2:00 am
Forum: Fans and Control
Topic: Cooling a TV
Replies: 42
Views: 12054

AFAIK that TV is about twice as thick as a pure LCD/Plasma display. I strongly suggest you stick to the manufacturers' clearence specs. Here is the size from the links above. Dimensions (WxHxD) 47 3/8" x 32 1/4" x 14 5/8" (1201x 819 x 371 mm) Thats quite a lot compared to a pure LCD. Unfortunately ...
by silvervarg
Thu Nov 11, 2004 12:58 am
Forum: The Silent Front
Topic: Need help interpreting values
Replies: 7
Views: 2201

Small fluctuations in voltage are acceptable (but not really good). What does worry me a little bit is that some of the values you posted are way out of spec. +5V : 3.20V +12V : 7.36V -12V : -6.11V -5V : -5.91V If these values would really be true nothing would work. The machine would not post, hard...
by silvervarg
Thu Nov 11, 2004 12:45 am
Forum: CPU Cooling
Topic: VIA Eden-N CPU
Replies: 9
Views: 2919

Actually I read the swedish version of it, and that one says 800MHz, now I see that the english version says 1GHz. I am not really sure where they got that figure from. Early indications where that even the 1GHz version would be fanless, but not they have remade the heatsink and added a fan to it. I...
by silvervarg
Thu Nov 11, 2004 12:23 am
Forum: CPU Cooling
Topic: superconducting heat pipes?
Replies: 8
Views: 2759

Thats a PIII socket (370), right? It is missing one lug on each side of the CPU socket compared to socket A, and the capacitors on both sides of the socket is awfully close, and you don't have any holes around the socket to mount any through-hole CPU cooler. What CPU do you plan to run on that board...
by silvervarg
Thu Nov 11, 2004 12:08 am
Forum: Fans and Control
Topic: Cooling a TV
Replies: 42
Views: 12054

i don't think i've ever seen a fridge with more than an inch of space around the sides/top You do have a point here, but we should be carefull to draw comparisons too far. A typical fridge is quite big, so making it a few inches bigger will not make consumers upset. It is normal that the fridge has...
by silvervarg
Wed Nov 10, 2004 3:36 am
Forum: CPU Cooling
Topic: VIA Eden-N CPU
Replies: 9
Views: 2919

Major agony! The latest pictures of the nano-ITX board has a 800MHz CPU and a small FAN on the heatsink.

Check out Epia-center for more details and pictures:
http://www.epiacenter.com/modules.php?n ... =0&thold=0
by silvervarg
Wed Nov 10, 2004 2:27 am
Forum: The Silent Front
Topic: 8rdavcore/nf7vore: Software controlled undervolting!
Replies: 50
Views: 44417

I have no idea why noone has answered this simple question yet. CPU frequency is FSB*CPU multiplier. The FSB is used for controlling lots of other things as well. Most noticable is the memory speed. The CPU heat is generated by voltage (vCore) and CPU frequency. If you just want to lower the heat ou...
by silvervarg
Wed Nov 10, 2004 1:51 am
Forum: The Silent Front
Topic: how to silence toroidal coil making noise
Replies: 9
Views: 6358

I agree with Sthayashi that earplug of hot glue is the common ways to fix this problem. Just how hot does the coil get? A good estimate is how many seconds you can hold your finger to the coil. If it gets very hot (sub 1 second with finger) then you might have some trouble, but if you can hold your ...
by silvervarg
Wed Nov 10, 2004 1:40 am
Forum: CPU Cooling
Topic: superconducting heat pipes?
Replies: 8
Views: 2759

heatpipes are superior to normal heatsinks, right? Well, that depends on exactly what you mean. Heatpipes are great to transfer heat a short distance, so they do aproximately the same as the thick baseplate of a heatsink, except that heatpipes can transport heat a bit further. To get ridd of the he...
by silvervarg
Wed Nov 10, 2004 1:03 am
Forum: Fans and Control
Topic: Cooling a TV
Replies: 42
Views: 12054

Putz: Get a plasma. Problem solved He has already got an LCD-TV, and plasmas generate a lot more heat than LCD-TV, so that would make things much worse. A single transformer should work fine. Have you considered to try to connect both fans in series? E.g. transformer on 12V gives 6V per fan. This w...
by silvervarg
Wed Nov 10, 2004 12:47 am
Forum: Fans and Control
Topic: Splitting the rpm signal? Success...
Replies: 10
Views: 2783

The problem I think that you are getting with the temp controlled fan is that the voltage that comes out from the fan to the tach line could be too low to register as high level by the motherboard. The best way to go here would be to measure the tach signal with a scope and see what comes out. If yo...
by silvervarg
Wed Nov 10, 2004 12:41 am
Forum: Fans and Control
Topic: using multiple fans in conjunction for air flow
Replies: 8
Views: 2898

I think the big advantage of letting fans rotate in opposite directions is the it could cancel out most of the vibrations. Normally we are not that concerned if the air that exists the fan is rotating or not. Would the direction of fan spinning affect static pressure? My guess is that it doesn't mat...
by silvervarg
Fri Oct 29, 2004 3:18 am
Forum: The Silent Front
Topic: Why you need silent system?
Replies: 53
Views: 29835

Even people who don't consciously hear the sounds are affected like those who can't tune them out. This is very true, and several posts have pointed this out before. Ralf, Halcyon and Edward Ng wrote really good posts. It is normal to be about 20% less effective over long time due to this disturban...
by silvervarg
Fri Oct 29, 2004 2:14 am
Forum: CPU Cooling
Topic: should I duct cold air in or hot air out?
Replies: 10
Views: 2996

It your are just ducting one of intake or exhaust I would prefere to duct air from CPU out of the case. This might not give you the coolest CPU temperature, but it will aid the cooling of all other components in your computer, so GPU, RAM, MOSFETS, HDD and PSU will be cooler. This means you can prob...
by silvervarg
Fri Oct 29, 2004 2:04 am
Forum: CPU Cooling
Topic: Amd xp2500 Cpu cooling ?
Replies: 8
Views: 2591

The Spire WhisperRock IV is a nice and cheap CPU cooler, but performance is not even close to that of the HT-101.
by silvervarg
Fri Oct 29, 2004 1:51 am
Forum: CPU Cooling
Topic: Dual core Intel chips...
Replies: 14
Views: 3713

The major difference is that Linux application developers does not have to do anything. The default priority settings for applications works fine in combination with the operating system and GUI. This is not the case in windows. So, it is possible that windows can be tweaked to a nice behaviour, but...
by silvervarg
Fri Oct 29, 2004 1:41 am
Forum: Fans and Control
Topic: Largest 12v fan that I could buy online right now?
Replies: 16
Views: 4190

Jamesavery22: I have a 8" x 10" very low restriction heatsink I am cooling with two 92mm fans. Want to just replace them with one large thin one. They are both really quiet. But Im playing with ideas on how to make it look more pleasing. I just think one large fan would look better than two small o...
by silvervarg
Thu Oct 28, 2004 8:12 am
Forum: The Silent Front
Topic: Athlon XP mobo undervoltable & without chipset fan?
Replies: 15
Views: 5079

Unfortunately I didn't read this thread until today, but I think you should read about my setup as it should give you a few ideas. I run NF7-M with XP-2500+ at ~XP-1500 speed with just convection cooling (no CPU cooling, no case fans and PSU fan is in separate compartment, so it does not cool the ca...
by silvervarg
Thu Oct 28, 2004 7:51 am
Forum: The Silent Front
Topic: Vent-Box Fanless Computer
Replies: 2
Views: 1575

He is doing a lot to run the 600MHz CPU. You don't need to do anything special to make the 600MHz version run with convection cooling only.
Trodas managed to make the 1200MHz VIA C3 run with convection cooling only, but he did do some work. There is a good thread here at SPCR about that build.
by silvervarg
Thu Oct 28, 2004 7:40 am
Forum: CPU Cooling
Topic: AMD 50x15 (budget computer package)
Replies: 1
Views: 962

AMD 50x15 (budget computer package)

A few days ago Internetnews anounced AMD's new budget PC. Read more here . $249 for computer including 15" monitor and keyboard and mouse. $185 without monitor. I believe this includes the OS as well. The computer is primarilly aimed for new markets in countries with emerging economies, but might en...
by silvervarg
Thu Oct 28, 2004 7:28 am
Forum: CPU Cooling
Topic: Dual core Intel chips...
Replies: 14
Views: 3713

The fact that you would manually have to tweak an application's priority means the people who made it didn't really think about the implications of having a huge CPU gobbling thread running on a system. Well, it is not an application issue as I see it. When running Linux on a single processor machi...
by silvervarg
Thu Oct 28, 2004 7:01 am
Forum: CPU Cooling
Topic: Amd xp2500 Cpu cooling ?
Replies: 8
Views: 2591

That coiled turned 90 degrees is very close to the CPU socket, and could possibly interfear with lots of coolers, so I advice you to go with something that has been tested on that particular motherboard. Digitizers suggestion with HT-101 seems like a very good choice. That motherboard can't really n...