Search found 344 matches

by cpemma
Sat Jan 17, 2009 12:04 pm
Forum: Cases and Damping
Topic: P180/182/190 Intake Airflow Restriction: A simple solution
Replies: 87
Views: 197667

So here's my question: is anyone selling replacement front panels for the P180/P182/P190 that offer better airflow? No, but you could get a P183 . The door is a larger version of the mATX mini-P180 and personally I find it ugly. What’s new in the P183: Front door vents, as well as wider vents alo...
by cpemma
Tue Jan 06, 2009 10:35 am
Forum: Deals, Vendors and Classifieds
Topic: Passive cooled Palit 9500GT on offer at ebuyer (UK)
Replies: 0
Views: 1028

Passive cooled Palit 9500GT on offer at ebuyer (UK)

Not the fastest card but silent and at £44 very reasonable. Model - NVIDIA 9500GT 1GB with HDMI Part - NE29500THHD01-PM8796 Interface - PCI-Express 2.0 Memory - 1GB DDR2 @ 800MHz 128-bit Core - 550MHz Max Res - 2048x1536 Outputs - VGAx1, DVIx1, HDMIx1 OS Support - Windows XP, Windows Vista Features...
by cpemma
Sat Dec 20, 2008 3:14 pm
Forum: Fans and Control
Topic: AfabTech Thermal Controls etc
Replies: 1
Views: 1071

One annoyance with a thermostat-style fan switch is that there's a step change in noise level, more noticeable than that from a supply voltage that varies with temperature, like their thermal controller board.
by cpemma
Mon Nov 24, 2008 10:57 am
Forum: Fans and Control
Topic: Please do a PWM fans roundup!
Replies: 32
Views: 11751

25kHz nominal, 21-28kHz is acceptable Also, it seems the fan header is supplying constant 12V with the PWM signal being 5V maximum on the 4th wire. The fan must be doing its own switching---I need to look at this more. The fan does indeed use that 5V signal to switch the 12V line to the motor coils...
by cpemma
Sun Nov 23, 2008 9:22 am
Forum: Fans and Control
Topic: Please do a PWM fans roundup!
Replies: 32
Views: 11751

I don't know. PWM makes fans noiser 4-wire PWM fans use a frequency well above the audio range, there's no logical reason for the "kick" effect of traditional LF PWM to be audible (unless you're a bat) but, as with linear control, bearing and motor noise are still possible. Comments from a trusted ...
by cpemma
Mon Nov 10, 2008 1:55 pm
Forum: Fans and Control
Topic: Scythe Kaze Jyu 100x25mm 1000rpm availability in UK/EU ?
Replies: 17
Views: 3195

maf718 wrote:If I could get a good 92mm for £6 I'd take it rather than pay £12 to import the 100mm.
You're maybe being a bit optimistic on pricing. A Nexus Real Silent 92mm will cost you £14 delivered.
by cpemma
Fri Nov 07, 2008 3:12 pm
Forum: Power Supplies
Topic: Standard Size ATX PSU is what size?
Replies: 2
Views: 3014

Re: Standard Size ATX PSU is what size?

Hi, I am looking for information about what a standard size PSU is according to ATX standards. Corsair say "Standard ATX PS/2 size: 5.9"(W) x 3.4"(H) X 5.5"(L); 150mm(W) x 86mm(H) x 140mm(L)" This pdf from Form Factors covers all computer PSUs in detail. I believe with ATX the width and height are ...
by cpemma
Fri Nov 07, 2008 12:49 pm
Forum: Fans and Control
Topic: Help Understanding
Replies: 3
Views: 1344

Usually on those gigabyte P35 boards (I think it's the same for all models) only the two 4-pin headers are controllable On the budget DS3L it's just the one (CPU fan). :( The Sunbeam reviewed here looks to be a decent controller, judging by the large heatsinks it's a linear design, not PWM, so shou...
by cpemma
Tue Nov 04, 2008 7:28 am
Forum: SPCR Article Discussion
Topic: Signature 650 PSU: Antec's Challenge
Replies: 34
Views: 15576

With a PWM fan, the usual procedure of measuring the voltage to the fan is useless, it will always read 12V May be worth looking at fan current measurement instead. Providing the fans are LED-free. ;) The 'modular' aspect seems a bit poor with a 4-pin molex string hard-wired. In a modern all-SATA s...
by cpemma
Sun Nov 02, 2008 2:00 pm
Forum: Fans and Control
Topic: Anyone using the Scythe Kama DFS122512L-PWM ? Comments?
Replies: 4
Views: 1813

I swapped it for the non-PWM Scythe fan (SY1225SL12M) that came with my Ninja HS; it runs much slower at idle (only 300RPM) and slower (1000RPM cf >1100RPM) under stress, with correspondingly less noise. CPU no hotter. (E2180 @ 2.9GHz, GA-P35-DS3L)

Very happy with it.
by cpemma
Sun Nov 02, 2008 1:35 pm
Forum: Fans and Control
Topic: Good quality, cheap 120mm fan?
Replies: 6
Views: 1966

The Yate Loon D12SL-12 is the perfect cheap fan IMO. Thirded. I find they suit me at about 7V, but they do have the reserve to be turned up if needed that the Nexus and other sub-1000RPM fans don't have. For Yate-Loon in the UK I find Chilled PC excellent. Fairly low postage if you just want a fan ...
by cpemma
Sun Oct 26, 2008 6:03 am
Forum: Fans and Control
Topic: Horizontal Sleeve Bearing: Myth or Fact?
Replies: 5
Views: 2295

Some very good fans have sleeve bearings and I'd have no hesitation in using a (very good) fan in any orientation. The better sleeves are porous (produced by sintering the sleeve from metal powder) and hold a reserve of oil by capillary forces. It's a case of reading the fan datasheet and seeing wha...
by cpemma
Sat Oct 11, 2008 11:46 am
Forum: Fans and Control
Topic: Confused over PWM.
Replies: 11
Views: 3835

The Arctic cooling PWM fan I pulled apart had a small I.C. connected to the PWM signal input a couple of small surface mount transistors and some other components . It appears to me that it reads the pwm signal the switches the field windings on and off according to the signal . Normal brushless DC...
by cpemma
Fri Oct 10, 2008 2:32 pm
Forum: Fans and Control
Topic: Question
Replies: 3
Views: 2278

A Nexus Real Silent is a much slower Yate Loon. Speed is cut from 1350RPM to 1000RPM, which makes a lot of difference where noise is concerned. The Yate Loons really must be fitted with a speed controller - then they're a good cheap and versatile fan.
by cpemma
Fri Oct 10, 2008 2:00 pm
Forum: Fans and Control
Topic: Confused over PWM.
Replies: 11
Views: 3835

I've just swapped the Scythe SY1225SL12M that came with my Ninja for a Scythe Kama DFS1225L-PWM. At idle it's silent at 500RPM. The fastest I can get it running is 1090RPM (cores at 55C) and the noise is noticeably less than that from the non-PWM fan, which used to spin at 1140RPM at that same tempe...
by cpemma
Sun Sep 21, 2008 12:00 pm
Forum: Fans and Control
Topic: I want to start fans at 12v, then go lower
Replies: 26
Views: 9298

In case someone is following this thread, I need help from you, electronic engineers. I don't have enough electronics skills. I built the cpemma kickstart circuit using a PNP transistor, but I have an important problem. Although the capacitor is working for the first time after several hours off, i...
by cpemma
Wed Sep 17, 2008 5:27 am
Forum: SPCR Announcements
Topic: Hal W. Hardenbergh (Felger Carbon) died - RIP
Replies: 35
Views: 81512

AuraAllan wrote:He was a great guy to have on these forums.
RIP
by cpemma
Fri Sep 12, 2008 12:23 pm
Forum: Cases and Damping
Topic: Antec 3000B: keep it or replace it?
Replies: 9
Views: 3059

I'm afraid I was always disappointed by my 3000B. Construction seemed flimsy (maybe the comparison with my previous Antec 1030B, extremely well made but, alas, not suited to 120mm fans) and far from being silent, with a pair of hard drives I got a peculiar 'beating' resonance that caused the door to...
by cpemma
Mon Sep 01, 2008 11:28 am
Forum: Fans and Control
Topic: SCYTHE KAZE MARU 140MM
Replies: 25
Views: 17156

Yesterday morning I installed two of these fans in the 1000RPM variety on the top panel of my CM Cosmos. Problem I see is that the fan is designed to bolt to standard 120mm fan mounting holes but needs a bigger aperture to be effective. With the standard 120mm aperture the maximum flow from the 140...
by cpemma
Tue Aug 12, 2008 9:28 am
Forum: Fans and Control
Topic: What fan support this kind of plug? U/D: Sycthe's too noisy
Replies: 25
Views: 5959

@blackworx: Four pin headers are not for CPU fan only, many (most?) motherboards now come with four pin headers for PWM case fans. Some of these can also control the speed of three pin fans but not all I believe. There were some gigabyte mobo owners complaining about this for example. Maybe they ar...
by cpemma
Tue Aug 12, 2008 2:39 am
Forum: Fans and Control
Topic: What fan support this kind of plug? U/D: Sycthe's too noisy
Replies: 25
Views: 5959

...if I plug in a Sycthe pwm fan to my motherboard, it won't work. We have a situation where either Scythe, your motherboard's designer, or you have made an error. I doubt Scythe or a motherboard designer would release such basically incompatible products with no furore, so, logically, your spatial...
by cpemma
Sun Aug 10, 2008 5:04 am
Forum: Fans and Control
Topic: What fan support this kind of plug? U/D: Sycthe's too noisy
Replies: 25
Views: 5959

Looking at the photo of the header, you'll see the upright key is sized to locate a 3-pin plug onto the correct three header pins. Are you referring to the red socket? The "standard" 0.1" polarised connectors as sold by Futurlec et al have the male's polarising key sized to fit a 4-pin female conne...
by cpemma
Fri Aug 08, 2008 4:04 am
Forum: Fans and Control
Topic: What fan support this kind of plug? U/D: Sycthe's too noisy
Replies: 25
Views: 5959

A 4 pin fan header can also control 3 pin fans. This is possible in speedfan but many motherboards too give you this capability in bios. I must have had a brainfart saying FanMate was needed, my own board has a 3-pin Scythe fan controlled perfectly by the 4-pin header. :oops: The Gigabyte BIOS auto...
by cpemma
Thu Aug 07, 2008 11:35 pm
Forum: Fans and Control
Topic: What fan support this kind of plug? U/D: Sycthe's too noisy
Replies: 25
Views: 5959

jessekopelman wrote:You can actually attach a 3-pin fan directly to that connector with no adapter, but it will run at full speed only...
...so in the absence of space for a bay-mount controller, you could add a Zalman FanMate to preset an adequately 'silent' speed.
by cpemma
Mon Apr 28, 2008 7:25 am
Forum: Fans and Control
Topic: Silent 4 pin PWM fan to replace Scythe Ninja fan required
Replies: 9
Views: 3371

Re: Silent 4 pin PWM fan to replace Scythe Ninja fan require

S_D wrote:If I use the stock 3 pin fan on my new motherboard I've read that I'll lose BIOS speed control of it and I want to keep that.
Obviously YMMV but my board (Gigabyte P35-DS3L) controls the stock 3-pin fan from BIOS with no problems. What board do you have?
by cpemma
Mon Apr 28, 2008 7:18 am
Forum: Fans and Control
Topic: My Antec P182 Case fans will not start on silent [low]
Replies: 8
Views: 3221

Try running the fans at medium/high for several hours, might loosen up the bearings a smidgeon.
by cpemma
Thu Apr 24, 2008 5:59 am
Forum: Fans and Control
Topic: SpeedFan 4.34 Final
Replies: 8
Views: 2885

I don't understand why speedfan doesn't install itself as a service. It seems like a major problem to me. http://www.bugtrack.almico.com/view.php?id=294 If you have any problems getting Speedfan to start up automatically with Vista, I started using this method with the 4.34 betas. "How do I run an ...
by cpemma
Wed Apr 23, 2008 2:38 pm
Forum: Fans and Control
Topic: another way to undervolt a fan
Replies: 2
Views: 1313

Re: another way to undervolt a fan

jcuesico wrote:Has anyone else tried this?
No, and I'm not going to. :shock:
by cpemma
Sat Apr 19, 2008 1:18 pm
Forum: CPU Cooling
Topic: How do you attach you cooler mounting plate to your MB?
Replies: 3
Views: 1736

The Thermalright "LGA775 Bolt-Thru Kit" has a black self-adhesive square on the upper side of the baseplate to attach it to the motherboard (if so required). The adhesive is protected by a white plastic film. Not exposing the adhesive does mean the backplate can easily be transferred to a different ...
by cpemma
Sat Apr 19, 2008 11:59 am
Forum: CPU Cooling
Topic: bolt-thru upgrade for ninja revB (pics)
Replies: 21
Views: 7162

Re: bolt-thru upgrade for ninja revB (pics)

the backplate had plastic stuff on it that i wasn't sure whether to remove or not, so i left it on. does anyone here know if this is correct or not..?? The backplate has a self-adhesive black square fitted, with the sticky bit protected by a white plastic "frame". I suppose one could remove the pro...