Search found 188 matches

by GHz
Sat Sep 18, 2010 8:46 am
Forum: Fans and Control
Topic: NF-P12 vs Gentle Typhoon?
Replies: 5
Views: 4589

I've measured the Noctua's airflow at 12V to be ~49 CFM. If you really need that much airflow, then you might consider one of the Scythe sleeve-bearing fans. They probably won't have the durability of the Noctua, but they don't vibrate so much and have an excellent noise:CFM ratio. Alternatively, th...
by GHz
Fri Sep 17, 2010 7:17 pm
Forum: Fans and Control
Topic: NF-P12 vs Gentle Typhoon?
Replies: 5
Views: 4589

I have both of those fans. The Gentle Typhoon is better IMO. They are both very quiet, quality fans. My observation is that the Noctua has some vibration problems. In free air, it's just as quiet if not quieter than the Gentle Typhoon... that is until you attach it to something. Then the vibration o...
by GHz
Fri Sep 03, 2010 2:41 pm
Forum: Fans and Control
Topic: Scythe: Kama or Slipstream?
Replies: 7
Views: 2105

The FDB Kama series is probably a better bet for cooling a video card. They stand up to heat better. Nevertheless, the PWM Slipstream is very good for a sleeve-bearing fan. I don't have a Kama on hand, but I do have various other Sony FDB fans for comparison. They are usually consistently good, exce...
by GHz
Fri Aug 13, 2010 10:04 am
Forum: Fans and Control
Topic: Fan Testing Equipment
Replies: 3
Views: 730

Thanks for the insights, Mike. I think I'll try anyway since--as you said--most people want/expect to see CFM. I wonder if perhaps turbulence might have been throwing off the readings on your last fan test platform. What I've read about HVAC is that you're supposed to take the FPM readings away from...
by GHz
Fri Aug 13, 2010 9:08 am
Forum: Fans and Control
Topic: Fan Testing Equipment
Replies: 3
Views: 730

Fan Testing Equipment

I'd like to purchase some equipment to test fans. I already purchased a B&K SLM, but I'd also like to measure CFM and possibly static/differential pressure. Here are the two candidates for anemometers: Kanomax 6813 w/AP275... this is pretty much the same as the 6803 that SPCR uses. I'm also consider...
by GHz
Tue Jan 23, 2007 2:40 pm
Forum: CPUs and Motherboards
Topic: Did I just get a pretty good E6600?
Replies: 8
Views: 3885

A while back I did a bunch of testing with an E6600; these were my results: 3.5 GHz (389x9), 1.487v, 157W idle, 214W Prime95, 239W TAT 3.4 GHz (378x9), 1.425v, 147W idle, 200W Prime95, 220W TAT, 14.9s SuperPI 3.3 GHz (367x9), 1.375v, 141W idle, 188W Prime95, 205W TAT, 15.5s SuperPI 3.0 GHz (334x9), ...
by GHz
Tue Dec 12, 2006 8:25 am
Forum: CPU Cooling
Topic: Core 2 Duo and Vcore setting (don't use AUTO!)
Replies: 2
Views: 1846

Some boards (such as my Gigabyte DS3) increase voltage beyond normal operating specs when the CPU and/or FSB is overclocked. The stock vcore for a Core 2 Duo is anywhere between 1.25 and 1.35 volts. So the reason your temperature is higher even at OC speed is because: 1. You are running below stock ...
by GHz
Sat Dec 09, 2006 8:22 am
Forum: Cases and Damping
Topic: Small cases with BIG fans
Replies: 9
Views: 3800

I wonder if having such a large side intake is really a good idea. The problem is that it totally annihilates the normal flow of air required to cool *all* components of a system. Sure, it will cool the motherboard, cpu, and video card, but what about the hard drives sitting in the front? I imagine ...
by GHz
Sat Nov 25, 2006 10:15 am
Forum: Green Computing
Topic: need help with project
Replies: 59
Views: 45318

Palindroman, First off, I just want to say that I think your idea is wonderful and I wish you great success. Nobody (computer mfrs.) is really making a big deal about green computing, and I think that we need to get the ball rolling. Hopefully your business venture is the answer. The challenge--as i...
by GHz
Wed Nov 22, 2006 11:33 am
Forum: Fans and Control
Topic: Vote For Your Favorite 120x25mm Fan!
Replies: 6
Views: 2701

sjschwinn: I wouldn't mind sampling the ADDA fans, but unfortunately you can't buy them anywhere (aside from wholesalers at very high cost). FC: The GlobalWin fans are really nice. As far as I can tell, they are quieter than the Nexus/YL fans (my GW samples had less motor noise) but push slightly le...
by GHz
Wed Nov 22, 2006 7:55 am
Forum: Fans and Control
Topic: Vote For Your Favorite 120x25mm Fan!
Replies: 6
Views: 2701

Here's my own input. I chose Nexus/Yate-Loon for their low-speed sleeve-bearing models (e.g. D12SL-12). My other top contenders are the Scythe S-FLEX series and GlobalWin's NCB fans.
by GHz
Wed Nov 22, 2006 7:51 am
Forum: Fans and Control
Topic: Vote For Your Favorite 120x25mm Fan!
Replies: 6
Views: 2701

Vote For Your Favorite 120x25mm Fan!

I'm curious as to everyone's favorite 120mm fans. I don't remember seeing a similar poll, so I thought I'd start one up. Please vote for your favorite fan. It doesn't have to be the quietest; just whatever model you prefer overall. After voting, take a minute to post why you chose that particular br...
by GHz
Sat Nov 18, 2006 9:29 pm
Forum: CPU Cooling
Topic: Overworking Chassis Fan/High temps on e6600
Replies: 6
Views: 2533

You could always try undervolting:
viewtopic.php?t=35532

If you run at 1.025v your CPU's TDP will be just 35W max. At that output, even the stock HSF won't have to spin up ;)
by GHz
Sat Nov 18, 2006 9:15 am
Forum: Fans and Control
Topic: Scythe DF Series Discontinued
Replies: 3
Views: 1952

Scythe DF Series Discontinued

It looks like Scythe has discontinued the DF series of fans and replaced them with NMB/Minebea fans: http://www.scythe-usa.com/product/acc_top.html This is unfortunate, the NMB/Minebea are--by most accounts--acoustically inferior :( I wonder why they did this. They must have got an outstanding deal ...
by GHz
Wed Nov 15, 2006 3:28 pm
Forum: Fans and Control
Topic: Scythe Minebea NMB Silent IC Series 4710KL
Replies: 1
Views: 1586

Scythe Minebea NMB Silent IC Series 4710KL

Just noticed this on Newegg. Anyone tried it?

http://www.newegg.com/Product/Product.a ... 6835185028
by GHz
Tue Nov 14, 2006 11:44 am
Forum: Fans and Control
Topic: Scythe Fans -VS- Nexus Fans
Replies: 17
Views: 7549

Scythe S-Flex is almost as quiet as a Nexus at a given airflow, but be aware that they DO NOT like PWM. My samples buzzed with PWM, while the Nexus/YL samples did not.
by GHz
Mon Nov 13, 2006 8:39 am
Forum: CPUs and Motherboards
Topic: Undervolting Core2Duo
Replies: 28
Views: 13978

OK, it looks like I've found the low-voltage limit. If I go any lower at this speed, I can't pass Prime95:

2.4 GHz @ 1.025v, 109W idle, 133W Prime95, 134 TAT

That comes out to a maximum TDP of 35W. I think we've found our new undervolting champion :D
by GHz
Sun Nov 12, 2006 10:34 am
Forum: SPCR Article Discussion
Topic: Antec Earth Watts: Green Computing Hits the Big Time
Replies: 22
Views: 24998

This looks like an excellent low-price, high-efficiency power supply. Question is, where can you actually buy it? I've searched my favorite e-tailers and price engines and I can't find it. Any ideas?
by GHz
Sun Nov 12, 2006 10:17 am
Forum: CPUs and Motherboards
Topic: Undervolting Core2Duo
Replies: 28
Views: 13978

Updated my first post with results using EIST and C1E. Stable for 12 hours of Prime95/Orthos:

2.4 GHz @ 1.1625, 117W idle, 145W Prime95, 146W TAT

I'd love to know what the TDP of this CPU is at this point. Anyone want to take a guess? I'm going to trying dropping voltage down further :D
by GHz
Fri Nov 10, 2006 8:25 pm
Forum: CPUs and Motherboards
Topic: Undervolting Core2Duo
Replies: 28
Views: 13978

Sorry for letting this thread sit idle. I don't like to report my readings until I'm sure they are 100% stable, but I haven't been able to do the full gamut of tests because I've been busy. Also, I was having trouble maintaining stability at totally stock settings (i.e. defaults) at low voltage. So ...
by GHz
Fri Nov 10, 2006 12:30 pm
Forum: Fans and Control
Topic: A different way to judge fan performance....
Replies: 13
Views: 3487

Just to mirror the above comment: get a medium speed Yate Loon fan. You can get the D12SM-12 which has a higher top end of around 1600 RPM vs 1350 of the L version. The Scythe fans are also very good (although acoustically a little behind the YL) but in my experience they have problems with PWM.
by GHz
Mon Nov 06, 2006 6:16 pm
Forum: CPUs and Motherboards
Topic: Undervolting Core2Duo
Replies: 28
Views: 13978

I can't wait for SPCR to do another CPU round-up ;)
by GHz
Mon Nov 06, 2006 8:57 am
Forum: CPUs and Motherboards
Topic: Undervolting Core2Duo
Replies: 28
Views: 13978

Stock & SuperPi results added. It looks like the overclocked/undervolted settings at 3.0 GHz/1.25v make it run at the same power efficiency as stock at 2.4 GHz/1.325v, except for idle power using EIST. For example, at 2.4/1.325v with EIST disabled, power consumption was 128W compared to 3.0/1.25v at...
by GHz
Sun Nov 05, 2006 9:27 pm
Forum: CPUs and Motherboards
Topic: Undervolting Core2Duo
Replies: 28
Views: 13978

Undervolting Core2Duo

Hey, I'm surprised I didn't see a topic on this, so I thought I'd start one. If you have a Core 2 Duo CPU, please post your undervolting experiences! I'm done testing the overclocking limits, so now I'm going in the other direction. Specifications: ================================= Intel Core 2 Duo ...
by GHz
Tue Oct 03, 2006 6:05 pm
Forum: Cases and Damping
Topic: Is your P150 HDD suspension rubber band OK?
Replies: 99
Views: 75768

I've used the elastic suspension method MikeC recommended in many of my builds. It's very secure, tough, and best of all--cheap! Thankfully my new Antec Solo uses the new fabric/elastic O-rings, so I doubt they will ever break.
by GHz
Sun Sep 10, 2006 8:27 am
Forum: Fans and Control
Topic: Fan CFM and dBL at various Voltages
Replies: 4
Views: 1934

I tried doing this myself, and the project took way too long, so I gave up. Now I understand the reason why SPCR hasn't done it yet.
by GHz
Sun Sep 10, 2006 8:25 am
Forum: Silent Storage
Topic: Are WD drives reliable?
Replies: 21
Views: 7463

Until I discovered Samsung products, I was a WD fan myself. After reading good reviews about the new WD drives here and elsewhere, I recommended them to a friend building a server. Unfortunately, 2 out of 3 drives he got from Newegg went bad in just 2 weeks. He has vowed not to touch WD drives again...
by GHz
Mon May 29, 2006 9:07 pm
Forum: Fans and Control
Topic: What would be higher CFM then the Yate Loon 120 + quiet
Replies: 5
Views: 1945

There's always the D12SM-12, which is rated for higher RPM operation (~1600RPM I think).
by GHz
Sat May 20, 2006 2:12 pm
Forum: Power Supplies
Topic: Problem with fan swap on old generic PSU
Replies: 5
Views: 1557

Just buy a zener diode and solder the fan leads where the original fan was attached. Be sure to use shrinkwrap or electrical tape to prevent shorting.
by GHz
Sat May 20, 2006 2:09 pm
Forum: Power Supplies
Topic: In Search Of Budget Psu.
Replies: 23
Views: 8797

I also recommend FSP power supplies. I use them on budget PCs I build for clients and friends/family. They are reasonbly quiet, efficient, and best of all... cheap :) You have nothing to worry about regarding starting power; The systems I build are designed for power efficiency (idle < 50W AC) and I...