Search found 2020 matches

by Felger Carbon
Tue Jun 24, 2008 6:32 pm
Forum: CPU Cooling
Topic: One heatsink, 5 badges and counting
Replies: 11
Views: 10378

One heatsink, 5 badges and counting

The wasp-waisted HDT HSF that originally appeared as the 3RSytems Prima is now also sold by SilenX, Sunbeamtech, EKG (German(?), I can't read the details but the photo is conclusive!) and most recently Silverstone as the NT-08 with blue blades on the fan (Techgage is going gaga over its performance)...
by Felger Carbon
Mon Jun 23, 2008 3:12 pm
Forum: SPCR Article Discussion
Topic: Zerotherm Zen FZ120 CPU Cooler
Replies: 10
Views: 8394

On page 1, the "incompatibility list" includes AMD socket 754. This is wrong. 754 mounts exactly the same way as 939/940, and these three are collectively referred to as "K8" mounting. It looks as though the AMD clip can be mounted in 90 degree increments, but the clips would be under the fins if bl...
by Felger Carbon
Sun Jun 22, 2008 5:05 am
Forum: User Reviews
Topic: 5 fans tested at equal airflow when mounted on an S1283 HSF
Replies: 4
Views: 6999

i'm surprised by the big difference in noise level between the SFL and SS at basically the same RPM; subjectively, was it aurally obvious that the SFL was the quietest of the fans on test for this particular setup? Too much time passed between different fans for my ear to "remember" the sound level...
by Felger Carbon
Sat Jun 21, 2008 3:53 pm
Forum: User Reviews
Topic: 5 fans tested at equal airflow when mounted on an S1283 HSF
Replies: 4
Views: 6999

A sixth fan tested; 38mm thick this time

Since pressure seems to be the question, I tossed my 120x38mm (Ultra Kaze??) fan, the one that's labelled 1000RPM (which is what I ordered) but turned out to be a 2000RPM, into the mix. 7 blades. What I got was 1055RPM fan at 4.95V when at 152RPM sensor. The noise level was 39.7dBA, a tenth of a dBA...
by Felger Carbon
Fri Jun 20, 2008 9:54 pm
Forum: User Reviews
Topic: 5 fans tested at equal airflow when mounted on an S1283 HSF
Replies: 4
Views: 6999

5 fans tested at equal airflow when mounted on an S1283 HSF

SFL: Scythe 1200RPM nominal S-Flex, 7 blades SS: Scythe 1200RPM nominal "M" Slipstream, 9 blades NCB: GlobalWin NCB ceramic bearing 1300RPM nominal, 7 blades Noc: Noctua 1300RPM nominal, 9 blades MAG: Enermax Magma 1500RPM nominal, 9 blades All fans are 120mm x 25.4mm ("25.4mm" is the complicated wa...
by Felger Carbon
Fri Jun 20, 2008 9:11 pm
Forum: The Silent Front
Topic: A controlled back-Z fixture based on the HDT-S1283 HSF
Replies: 0
Views: 1810

A controlled back-Z fixture based on the HDT-S1283 HSF

The backside, or sensor prop side, of the test fixture. Note the tape holding the fan in place: http://img113.imageshack.us/img113/2912/810gp3.th.jpg The frontside, with one of the five fans initially tested: http://img126.imageshack.us/img126/3550/813eb4.th.jpg A macro view of the modified HDT-S128...
by Felger Carbon
Fri Jun 20, 2008 10:25 am
Forum: Fans and Control
Topic: Trouble finding a fan with a specific tail connector...
Replies: 4
Views: 1534

See here.
by Felger Carbon
Thu Jun 19, 2008 1:51 pm
Forum: Fans and Control
Topic: How do I slow down my 200mm Antec Big Boy?
Replies: 10
Views: 5095

Agent_N wrote:The LED's are kinda bright...
The LEDs plug into 3-pin sockets. Unplug the center pin of the LED and it goes dark. Do it four times to turn all 4 LEDs off. This is a non-destructive modification, to get your bright LEDs back just plug wires back in. :wink:
by Felger Carbon
Wed Jun 18, 2008 8:38 pm
Forum: CPUs and Motherboards
Topic: Micro ATX Boards Stagnating?
Replies: 9
Views: 3309

Aris, I think you're right. uATX boards, esp. with integrated video, are stagnating. It's about delivering adequate performance for the buck, and right now DDR3 is deadly for that combination. Remember Intel's Timna, which could only operate with RDRAM? And got cancelled when RDRAM prices got stuck ...
by Felger Carbon
Wed Jun 18, 2008 4:24 pm
Forum: Fans and Control
Topic: Incredible noise in Nexus PWM!
Replies: 3
Views: 2475

Does your mobo have a 3-pin fan header? Then plug in your 4-pin PWM fan and see if the problem goes away. Or use a 4-pin molex to 3-pin fan adapter instead of the mobo header. If the problem doesn't go away, it's likely the fan. If it does go away, it's an undesirable interaction between the 4-pin m...
by Felger Carbon
Tue Jun 17, 2008 2:34 pm
Forum: The Silent Front
Topic: Hi-Z fan testing follies: the SI-128SE [almost!] fiasco
Replies: 6
Views: 3329

Yep....back pressure. It's a killer. Now if you set up the machine with the fan sucking through the fins, I'll bet your sensor prop will turn normally. Keep at it.....you'll get it right. :) We do agree most of the time, Bluefront... :) The HSF Mid-Z fixture works fine. Took zero time to build it! ...
by Felger Carbon
Tue Jun 17, 2008 9:54 am
Forum: The Silent Front
Topic: Evaluating HSF fans that are subjected to backpressure
Replies: 12
Views: 5611

Absolutely awesome, Felger! Can't wait to start getting some numbers!! Alas... the purpose of experiments is to learn. I learned a lot this morning when I gave the fixture its trial run. I just posted the results in this forum, using a separate thread. Well, one Z fixture down, two to go... I predi...
by Felger Carbon
Tue Jun 17, 2008 9:50 am
Forum: The Silent Front
Topic: Hi-Z fan testing follies: the SI-128SE [almost!] fiasco
Replies: 6
Views: 3329

Hi-Z fan testing follies: the SI-128SE [almost!] fiasco

Toward the end of this thread, there's some photos showing the detailed construction of my hi-Z equal-airflow test jig based on the SI-128SE. Bright and early this morning, I fired it up. It crashed and burned on the runway (old aviation expression referring to really bad aircraft designs). edit: se...
by Felger Carbon
Mon Jun 16, 2008 6:57 pm
Forum: SPCR Article Discussion
Topic: Noctua NH-C12P: A Top-Down Cooler Rises to the Top
Replies: 55
Views: 29333

Scythe offers five models of the Slipstream, 500RPM to 1900RPM nominal. S-Flex now has 4 models, 800 to 1900. Noctua offers a munificent one model, throwing in a coupla resistors to provide 3 total nominal RPMs at 12V. Noctua could do worse... but they could do better, too. The decision to offer onl...
by Felger Carbon
Mon Jun 16, 2008 4:40 pm
Forum: SPCR Article Discussion
Topic: Noctua NH-C12P: A Top-Down Cooler Rises to the Top
Replies: 55
Views: 29333

However I wonder if something was wrong with the specific fan. It does seem odd that the measured noise (32dB) would be over 12dB above that of the rating. Looking at the review of the NF-S12-1200, though, that was measured 8dB above the rating. Perhaps Noctua uses some questionable methods of rati...
by Felger Carbon
Mon Jun 16, 2008 4:10 pm
Forum: The Silent Front
Topic: Evaluating HSF fans that are subjected to backpressure
Replies: 12
Views: 5611

The hi-Z test fixture, based on the SI-128SE, ready to go: http://img265.imageshack.us/img265/7348/805ht9.th.jpg A view from the rear, showing the sensor prop reasonably close to the fin cooling stack: http://img373.imageshack.us/img373/2360/806qp4.th.jpg This shows the two angle braces on the white...
by Felger Carbon
Thu Jun 12, 2008 4:04 pm
Forum: The Silent Front
Topic: LG W2252TE - "World's most energy efficient monitor&quo
Replies: 10
Views: 6412

My first LCD monitor, a more-than-3yr-old CDLCD 19", draws 35W total wall power (with 300NITS turned down). It seems this 22" has a 40W reduction (?) in wall power, which amounts to 40%. This tells me it pulls 60W, meaning the competition is claimed to pull 100W wall power. Am I missing something? T...
by Felger Carbon
Thu Jun 12, 2008 8:49 am
Forum: The Silent Front
Topic: Evaluating HSF fans that are subjected to backpressure
Replies: 12
Views: 5611

The fan adaptor on the fan is a Nexus 80/92mm/120mm from Coolerguys, as is the blue adaptors shown. The hole openings are 79 and 85mm, respectively. Jab-Tech carries the blue adaptor (called a "funnel" adaptor) in both 80mm and 92mm sizes. The screws came with the Nexus. http://img88.imageshack.us/i...
by Felger Carbon
Thu Jun 12, 2008 7:23 am
Forum: CPU Cooling
Topic: Andy Samurai, Triton 75 or Zipang
Replies: 9
Views: 2960

Re: Andy Samurai, Triton 75 or Zipang

I've a rebel sharkoon 9 with a 25 cm side fan and i don't know which of these coolers can fit in my case. The problem is, the "25cm" side fan will eat overhead inside the case. The Zipang is out. If your case is 200mm wide, it will accept HS+fans ~131-133mm high. If not, can you provide a pointer t...
by Felger Carbon
Wed Jun 11, 2008 12:40 pm
Forum: The Silent Front
Topic: Evaluating HSF fans that are subjected to backpressure
Replies: 12
Views: 5611

Here are the two HSFs, an RVT-12025 and an SI-128SE: http://img45.imageshack.us/img45/4575/797bna6.th.jpg First we cut the four SI-128 heat pipes. Crimp the tube flat with the right-hand tool, cut the flat tube with the center tool, and bend the tube ends with the left-hand tool so the heatpipe ends...
by Felger Carbon
Wed Jun 11, 2008 5:35 am
Forum: SPCR Article Discussion
Topic: Thermalright HR-01 Plus: 2nd Gen Killer Tower Cooler
Replies: 57
Views: 32908

fyleow wrote:Great results, wonder how long before we see more manufacturers adopt the "direct heatpipe touch technology"
Fyleow, ya got me konfuzed! I woulda sworn that the HR-01+ did NOT use HDT! :wink:
by Felger Carbon
Tue Jun 10, 2008 6:13 pm
Forum: The Silent Front
Topic: Evaluating HSF fans that are subjected to backpressure
Replies: 12
Views: 5611

I've been gathering parts. For a heatsink impedance, I need a rectangular fin block. I've already received an SI-128SE for the high-Z (Z for impedance in electronics, so I'll use it here) HS - the TRUE isn't rectangular, and an Xigmatek HDT-1283-alike (GlobalWin Revolution RVT-12025) for a mid-range...
by Felger Carbon
Sun Jun 08, 2008 10:29 pm
Forum: CPU Cooling
Topic: SI-128SE x Zipang x Noctua NH-C12P x other down-blowers
Replies: 20
Views: 5949

Velvet: You have to decide what's important to you. For a given amount of CPU cooling, tower heat sinks deliver that cooling with the least amount of noise. VRM cooling is an interesting subject. Only overclockers with high power dissipation CPUs stress most mobo VRMs. VRMs by their nature withstand...
by Felger Carbon
Sun Jun 08, 2008 7:48 pm
Forum: CPU Cooling
Topic: SI-128SE x Zipang x Noctua NH-C12P x other down-blowers
Replies: 20
Views: 5949

...what is the advantage, other than easier access/convenience to mobo components to a tower type cooler over one of these top down type coolers? There are several advantages. One, the heat from the CPU is blown directly at the exhaust fan by a tower HSF. A shelf-type HSF blows the heat at right an...
by Felger Carbon
Sat Jun 07, 2008 2:50 pm
Forum: CPU Cooling
Topic: SI-128SE x Zipang x Noctua NH-C12P x other down-blowers
Replies: 20
Views: 5949

You didn't mention what fan (if any) you're using on your Ninja. A Slipstream 800 (or a 1200 on a fan controller) might be a cheap fix. It's interesting that you're thinking of replacing a tower cooler with one of several shelf coolers. There's some really good, inexpensive, tower coolers out there....
by Felger Carbon
Fri Jun 06, 2008 10:47 am
Forum: CPU Cooling
Topic: Found some Thermalright@Computex 2008 pics
Replies: 8
Views: 3458

Actually, the majority of heat from hard drives is emitted along the sides, not the top. That's certainly true for conventionally mounted HDDs, which use the aluminum HDD mounting rack as a defacto heat sink. For those few people (more of them here at SPCR) who suspend their hard drives, most of th...
by Felger Carbon
Wed Jun 04, 2008 12:06 pm
Forum: CPU Cooling
Topic: Will SPCR review Sunbeam Core Contact Freezer or Xigmatek?
Replies: 4
Views: 2062

SVC? The only SVC I know of is a retail store. You want to get yer reviews from a retail store?? :roll:

Regarding your request for a Xigmatek S1283 review, I assume you did not like the original SPCR review, and want them to do it again, only better? :P
by Felger Carbon
Sun Jun 01, 2008 2:15 am
Forum: Fans and Control
Topic: A new idea on fan stacking
Replies: 16
Views: 5257

Re: A new idea on fan stacking (I think)

Since there are no (none, zip, zero) standard methods of measuring how fans respond to backpressure technically AMCA 210 is the standard for measuring CFM and pressure of fans (this is how mfg.s generate their P-Q performance graphs e.g here ), for examples of the test apparatus see here , here and...
by Felger Carbon
Sat May 31, 2008 3:39 pm
Forum: The Silent Front
Topic: Any Experience with Scythe Thermo Non-Contact Thermometer
Replies: 2
Views: 2482

I've used it. Accuracy seems OK. Not a "tight beam", there's a fairly wide beam to the infrared thermal sensor so you need to measure big objects or hold the thermometer close to the object measured. Mine does not work if not plugged into USB; it may simply be that the supplied lithium battery is di...