Search found 1270 matches

by silvervarg
Wed Oct 20, 2004 12:33 am
Forum: CPU Cooling
Topic: Quick undervolting/Prime95 questions
Replies: 16
Views: 3912

Well, I have had some cold boot problems, but this only occurs when you are very close to the limit on how low you can set the vcore. Just bump vcore one notch and they will typically disapear. The main point is that the torture test in prime95 might not be the worst case. Cold booting is often a sl...
by silvervarg
Tue Oct 19, 2004 5:16 am
Forum: The Silent Front
Topic: Really big heatsinks, where to get them?
Replies: 3
Views: 1260

Search for "kylelement" at elfa.se.

Yepp, KS300.6-1000E
Weight is 24500g, and you don't want to know to price...

ELFA has lots of stuff, but they are very expensive.
by silvervarg
Tue Oct 19, 2004 5:09 am
Forum: General Gallery
Topic: Quiet P4 setup, modded heatpipe and a REALLY big heatsink
Replies: 14
Views: 10044

Awsome work man, but you just have to do something about that PSU fan.
by silvervarg
Tue Oct 19, 2004 4:40 am
Forum: The Silent Front
Topic: Sempron 3100+, undervolt & microATX
Replies: 5
Views: 2091

If you go for an XP-M the 2500+ Barton seems to be highly regarded and priced very attractively. The faster Sempron with the Athlon 64 stripped seems very interesting as well. Since it has not been out that long not many builds have been done by SPCR members yet, but personally I have high hopes for...
by silvervarg
Tue Oct 19, 2004 4:28 am
Forum: CPU Cooling
Topic: Intel abandons clock speed chase and drops 4GHz Pentium
Replies: 15
Views: 2938

PassiveMan: Early indications show that the dual core strategy boosts performance by up to 55 per cent. Where did you find this number? Is sounds awfully bad, so if it is true something is in desperate need to be fixed. They should be able to reach 80%-90% performance boost if they are well made (a...
by silvervarg
Tue Oct 19, 2004 3:56 am
Forum: CPU Cooling
Topic: Quick undervolting/Prime95 questions
Replies: 16
Views: 3912

The cold boot issues are as far as I can tell about Athlon XP:s which doesn't really want to play if you try to boot it cold from lower than about 1.4V (varies). I have not heard anything about this being an issue with Intel CPU:s though. The cold boot issues actually reside from how transistors wo...
by silvervarg
Tue Oct 19, 2004 3:22 am
Forum: CPU Cooling
Topic: Why isnt my Quiet CPU cooler QUIET!?!
Replies: 8
Views: 2434

Do you have the TC (temperatue controlled) version or the regular version?
I believe that the TC version is considered very quiet for its price if run with a CPU that puts out a fair amount of heat. With a fast P4 CPU it needs to ramp up quite a bit, and then it will ofcourse produce more noise.
by silvervarg
Tue Oct 19, 2004 2:53 am
Forum: Fans and Control
Topic: My new fan controller.
Replies: 10
Views: 3370

silvervarg wrote: The panaflos made in Japan usually works a bit better with PWM than the ones made in china... Edward Ng wrote: WHOA--not that I don't believe you, but where did you learn this? From personal experience with a few 80mm L1A both China and Japan made. It has also been confirmed by ot...
by silvervarg
Tue Oct 19, 2004 2:46 am
Forum: Fans and Control
Topic: Different fan controls (was: Panaflo -- at last!)
Replies: 21
Views: 4485

Silvervarg: The attenuators does not do DC conversion, they simply smooth out the PWM curve a bit more. Jones_r: That's not entirely correct, the attenuators do DC conversion, in fact that's the only thing they do. And btw, The T-Balancer PWM's are smoothed to begin with. Rechecking at http://www.m...
by silvervarg
Mon Oct 11, 2004 4:42 am
Forum: The Silent Front
Topic: Logitech mice: noisy electronics.
Replies: 7
Views: 2410

Halcyon: My Mx510 squels and I can hear it when it's really quiet. Annoying, but what can I do about it? The linked page above has narroved down the problem to be either the IR diode or the IR reciever. I have never heard of a LED that emitts noise in this way, and the LED is a very simple device. ...
by silvervarg
Mon Oct 11, 2004 3:30 am
Forum: CPU Cooling
Topic: VIA Eden-N CPU
Replies: 9
Views: 2861

highly unlikely the nano version will come without I hope you are right, but there is a big difference here. The new heatsink is huge compared to the board. An estimate says that it covers 8*8 cm of the board (out of a total of 12*12 cm board). Also the new heatsink covers not only CPU, but also no...
by silvervarg
Mon Oct 11, 2004 3:16 am
Forum: CPU Cooling
Topic: Best fanless heatsink to cool an undervolted Athlon XP
Replies: 27
Views: 9309

Frosty: R-Jones what intensive programs won't an Athlon run for you. UT2003 and Quake3 at the highest settings runs great for me, no slow down at all, you running cad stuff or adobe? I believe he had concerns for VIA CPU's not running things fine. And we are talking about passive cooling (convectio...
by silvervarg
Mon Oct 11, 2004 2:20 am
Forum: CPU Cooling
Topic: VIA Eden-N CPU
Replies: 9
Views: 2861

mini-itx.com has some more news about the nana-ITX board (Eden-N). If seems that it will come in 3 versions: 533MHz, 800MHz and 1GHz CPU. All of them are fanless! It seems that the big blue anodized heatsink is included, but I am not sure about this. Now to the sad news: mini-itx.com estimates that ...
by silvervarg
Mon Oct 11, 2004 2:13 am
Forum: Quiet Prebuilt, SFF and Barebones Systems
Topic: VIA EPIA-N8000
Replies: 2
Views: 1645

Well, the 375 euro is just the price if you order from that store today. That would guarantee that you get something before anyone else, and that can often come with an expensive price-tag. I would expect the Eden-N board to drop rapidly in price, but it might take to middle next year before it is w...
by silvervarg
Mon Oct 11, 2004 1:52 am
Forum: CPU Cooling
Topic: Hyperthreaded CPU makes a noise!
Replies: 11
Views: 2702

What a great tip to put earplugs in the coils! A much neater solution than gluing them. The noise comes from the winding in the coils moving due to the magnetic forces the coils produce, so by doing anything that fixes or damps the movement of the windings it should reduce sound a lot. I guess it wi...
by silvervarg
Mon Oct 11, 2004 1:30 am
Forum: CPU Cooling
Topic: Aerocool HT-101.....fake copper?
Replies: 17
Views: 5475

It could be possible to calculate the approximate volume of the cooler by accurately measuring. The density of copper is about 8.9 g/cm^3. The density of aluminium is about 2.7 g/cm^3. The large difference in density should make it possible to find out even if the measurement is slightly off. Comapr...
by silvervarg
Mon Oct 11, 2004 12:05 am
Forum: Fans and Control
Topic: Strange fan wiring idea?
Replies: 21
Views: 3956

Frosty: I understand the 7 volt wiring Rusty, but am afraid to go longterm and hurt the coveted PSU The 7Volt mod is using +12 as positive line and +5V as GND. This could is theory be bad for the PSU, but since you draw a lot more power from the +5V the net will be that no current will be dumped in...
by silvervarg
Sun Oct 10, 2004 11:42 pm
Forum: Fans and Control
Topic: 2-fan system?
Replies: 5
Views: 1905

The link you posted does not work. The Zalman 6000 cooler is not that great, so I would not recommend it for this CPU. The passive cooler on the northbridge is defenatly a good choise. I also like the idea with a big passive cooler on the GPU and leaving at least one PCI slot open to make sure you g...
by silvervarg
Sun Oct 10, 2004 11:33 pm
Forum: Fans and Control
Topic: Different fan controls (was: Panaflo -- at last!)
Replies: 21
Views: 4485

Jones_r: The only thing is that it can't spin below 700 rpm reliably. Once I will get the attenuators which do DC conversion, we'll know if he was right or wrong. I don't have any way to check the L1A @ 5V. The attenuators does not do DC conversion, they simply smooth out the PWM curve a bit more. ...
by silvervarg
Thu Oct 07, 2004 1:13 am
Forum: Power Supplies
Topic: System AC power consumption when idle
Replies: 1
Views: 890

I get about 50W DC at idle of a fairly similar system. Then it's up to the efficiency of your PSU. 65% are a fairly good guess for a normal PSU at this low load. A low power system will often get a significantly smaller AC draw if you can use a brick PSU and DC-DC board, but this is expensive and al...
by silvervarg
Thu Oct 07, 2004 12:55 am
Forum: CPU Cooling
Topic: Best fanless heatsink to cool an undervolted Athlon XP
Replies: 27
Views: 9309

If you want a true 0dB system with no fans installed then you should really start with planning how the cooling system will operate and estimate how many watts it can handle. Once you have done that grab hold of CPUPower and calculate how far you need to undervolt and underclock your CPU to be able ...
by silvervarg
Thu Oct 07, 2004 12:33 am
Forum: Fans and Control
Topic: For those in search of a PWM-less fan controller...
Replies: 10
Views: 3062

I haven't looked that closely on that controller, but with a rating of 17W per channel it would need huge heatsinks to be able to operate with just resistors. The resistors would be very big and expensive as well. It could possibly use voltage regulators, but I strongly doubt even that solution with...
by silvervarg
Wed Oct 06, 2004 2:05 am
Forum: The Silent Front
Topic: Reliable powered USB hub for mouse and keyboard?
Replies: 8
Views: 1891

You might be experiencing communication collision on the USB line at startup. With enough semi-stupid deviced plugged in to one logical USB line this could cause a problem. Does your motherboard have both rear and front USB? (That is the front is just a header on the motherboard). If that is the cas...
by silvervarg
Wed Oct 06, 2004 1:40 am
Forum: Power Supplies
Topic: Experience with brick PSU for ATX board?
Replies: 15
Views: 6677

Thanks for the tip. I did a quick search for it, and it seems to be nice swiching power supplies that produce 12V DC. At least the smaller models are fanless. They are made with external enclosures, so if put internally in a computer it might not be wise to use the full power for too long due to hea...
by silvervarg
Wed Oct 06, 2004 1:24 am
Forum: CPU Cooling
Topic: Cooling PIII/933 in FLex ATX case
Replies: 4
Views: 1236

Welcome to SPCR! Looking at the Processor Electrical Specifications that CPU will at full usage produce 24.5 to 31.5W (depending on exactly what CPU it is). Regardless this is rather little CPU heat, so I am quite confident that you will do fine with 7V on that 80mm fan. Your only problem is the low...
by silvervarg
Wed Oct 06, 2004 1:14 am
Forum: Fans and Control
Topic: First Sound Files
Replies: 45
Views: 41644

Top selling cellphones does shift rather quickly, so soundfiles would need to be added every 6 months or so. On top of that MikeC would need to get hold of all the new popular brand cellphones every 6 months (sigh!). No to mention that different brands and models are selling good in different countr...
by silvervarg
Wed Oct 06, 2004 12:54 am
Forum: Fans and Control
Topic: fans in series size/speed compatability
Replies: 9
Views: 2761

by "slow" i meant "lower cfm than corresponding exhaust fan" Ah, well in general even a rather slow fan will aid airflow. Lots of practical tests has prooven this. The question is usually if the intake fan provides enough extra cooling to justify the extra noise. Also keep in mind that there is oft...
by silvervarg
Wed Oct 06, 2004 12:44 am
Forum: Fans and Control
Topic: I'm for Thermo-Control fans.
Replies: 18
Views: 6782

I agree that better temal controlled fans would be a good thing. The problem is that the market is quite small and cost is a major issue. Concumers need to be willing to spend $5-$10 more to get a good termal controlled fan. It the market is large enough there should not be a problem. Another option...
by silvervarg
Wed Oct 06, 2004 12:35 am
Forum: Fans and Control
Topic: Changing fan connector
Replies: 4
Views: 1621

If you can't find the information for a specific fan you have a few options. The best is to measure the actual current draw with an amp-meter. This normally means you have to cut one cable or use an extension wire with one wire cut. Measuring the resistance of the fan is often missleading since the ...
by silvervarg
Mon Oct 04, 2004 3:53 am
Forum: CPUs and Motherboards
Topic: Undervoltable Motherboards: ADD to the list!!
Replies: 313
Views: 343258

It is possible that you can underclock with this motherboard, but I would not be certain that it works. The manual says that the motherboard does support full range CPU-core voltage, but it does not say that vcore is manually adjustable in BIOS. Further they say that FSB should be 133MHz, and they "...