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General Liquid/Water Cooling Discussion For discussion about Full Cooling System kits, or general cooling topics. Keep specific cooling items like pumps, radiators, etc... in their specific forums. |
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05-31-2004, 02:57 PM | #1 |
Cooling Neophyte
Join Date: May 2004
Location: HK
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BIX II how much better than BI Pro II?
a Black Ice Pro II is only about 20 mm thinner than Black Ice eXtreme II in size, yet it's price is $3x cheaper.
Is it worth to pay $3x more to get a BIX II? how much is it better than Black Ice Pro II? |
05-31-2004, 03:07 PM | #2 |
Cooling Neophyte
Join Date: Apr 2004
Location: Yorktown, New York
Posts: 40
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The diffrences between the bix and bip are not skin deep.
The Bix is designed diffrently. Its heat transfer is substantially better. Go with the BIX or a heatercore |
05-31-2004, 06:22 PM | #3 |
Cooling Savant
Join Date: Jan 2004
Location: Alberta
Posts: 631
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According to the company that makes them, the BIX is twice as good. Save yourself some money and get a heater core.
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06-01-2004, 01:12 PM | #4 |
Cooling Neophyte
Join Date: May 2004
Location: HK
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Heater core from Danger Den?
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06-01-2004, 03:48 PM | #5 | |
CoolingWorks Tech Guy Formerly "Unregistered"
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did you review their data ? why don't you ask for an explanation ? or ask a vendor who sells both ? j/k, j/k we both know that WCers will buy on hype, no data needed I do have data, and in 4 wks or so it will be 'published' as we describe new products - but NOT the BIX I wonder why ? |
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06-01-2004, 07:00 PM | #6 | |
Cooling Neophyte
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Location: Yorktown, New York
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06-01-2004, 09:03 PM | #7 | |
Cooling Savant
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Location: london, england
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06-02-2004, 09:29 AM | #8 | |
CoolingWorks Tech Guy Formerly "Unregistered"
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the second row of tubes has exactly the same efficiency as the front row ? they should patent such a rad, for it does not exist |
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06-02-2004, 09:32 AM | #9 |
Big PlayerMaking Big Money
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I've heard 20-30% improvement for second row of tubes is that about right Bill?
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06-02-2004, 09:49 AM | #10 |
Cooling Savant
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Location: Oxford University, UK
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I presume the reasons for this are that the flow rate would be greatly reduced through each set of tubes? Essentially two black ice pro II in parallel with common tanks, yes? So because of the lower flow rates, the convective heat transfer coefficient would be reduced, yes?
Equally, it would be more restrictive for airflow, so the all important airflow would be reduced. Does that sound like a reasonable explanation. 8-ball
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06-02-2004, 09:58 AM | #11 |
CoolingWorks Tech Guy Formerly "Unregistered"
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and that the air to the second row is now warmer
OFFSET second rows are generally assumed to have 70% efficiency as compared to the first row - but the BI rads are all in a row, far worse as the 2ed tube leading edge is now shrouded another bs claim, parroted by ignorant vendors grrr, getting hot and its not yet 8Am |
06-02-2004, 10:09 AM | #12 |
Cooling Savant
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Location: Oxford University, UK
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Yeah forgot about the warmer air.
Oh well, got the hard parts and missed the obvious point. Never mind. 8-ball
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For those who believe that water needs to travel slowly through the radiator for optimum performance, read the following thread. READ ALL OF THIS!!!! |
06-02-2004, 05:58 PM | #13 | |
Cooling Savant
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their claim for a BIM and Swiftech's for it's version are very close i believe (once you adjust for the 40C... ) |
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06-04-2004, 08:14 AM | #14 | |
Cooling Savant
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It's all a matter of what you're optimizing for... |
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06-04-2004, 08:45 AM | #15 | |
Cooling Savant
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Actually their BIM is about right. 3W more at a 15C thing, but that's with a rough calculation. |
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06-04-2004, 09:53 AM | #16 | ||||||
Cooling Savant
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And rereading my post - was it the word "preferable"? I should have been clearer - would "preferable in that it's the same cooling at silent fan levels for lower cost" have worked better? It's what I meant - I jump between here and the silent PC review and sometimes forget that the two audiences are on really different wavelengths as regards "quiet" and "silent". (on the other hand, I've somewhat given up on the watercooling forum over there). Oh, and in considering 15dB to be "silent", I'm at the "loud" end of the spectrum over there (sort of like being a US liberal and moving to Australia, I guess ). In the future I would appreciate a PM or EM if you think something I've posted is "BS". I really try to not do that and would like a chance to re-write something that I haven't done properly - particularly if the issue is not something technical (so other readers might get benefit of the discussion) but simply my writing skills. |
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06-04-2004, 10:03 AM | #17 |
Cooling Savant
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off topic - speaking of "writing skills"
I've had good luck using a free spell checker called IE Spell. It definitely beats exporting the text of a post out to a word processor just so I can check for typos.
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06-04-2004, 07:01 PM | #18 | |
Cooling Savant
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06-04-2004, 10:07 PM | #19 | ||
Cooling Savant
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I'm referring to two radiators of the same construction and thickness. one has about 22 square inches of frontal area, the other has about 45 square inches frontal area. I've said the larger one can shed more heat. What are you going on about? Is this wrong? Would you like to call it BS? You seem to want to do this publicly, so go ahead. Quote:
Now tell me what sort of "performance" you're getting from both those radiators at that pressure/CFM. Are you pushing or pulling? Other factors? If your definition of "silent" was over ~15dB - why? My hearing is damaged from many years of motorcycles, guns, and airplanes - and I can still hear 15dB no problem - and "if ya can hear it, it ain't silent". If you don't mind me asking - have you ever built any silent systems? |
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06-05-2004, 11:00 AM | #20 | |||||||
Cooling Savant
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06-05-2004, 11:22 AM | #21 |
Big PlayerMaking Big Money
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There are 3 120mm sized Black Ice radiators:
Black Ice (prime): 4 pass, 3/8" OD barbs, tested by BillA; VERY restrictive Black Ice Pro: 2 pass, 1/2" OD barbs, one row of parallel tubes for water flow Black Ice Extreme: 2 pass, 1/2" OD barbs, 2 rows of tubes. As far as fin density I've never held them up side by side but I am guessing they are probably the same. Bob's comments dont seem unreasonable to me; for quiet wcing with low CFM fans I would also use a Black Ice Pro or better yet a Pro2 and not their Xtreme brethren.
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06-05-2004, 01:00 PM | #22 | |
Cooling Savant
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I was surprised when I discovered that the cheaper radiator did as well / better than the more expensive one. I had thought that if something was surprising / unusual / contrary to expectations I'd ought to mention it. I'm hesitant to report temps as they were diode temps and weren't the same CPU (although were same model case, motherboard, fan) so the relation could easily be the reverse of what I saw - but probably not so far in reverse that it'd make sense to buy the more expensive radiator. Oh - and I possibly arranged case-wiring differently (no notes and can't remember) which also can have a big effect. I'm certainly guilty of not being able to keep the BlackIce model names straight. I have to look at web pictures to re-figure-out which is which every time I order one (not that often, anyway). I'm also guilty of not being really clear about what I mean by silent. Finally, I am guilty of beginning to "respond in kind" to Angry Alpaca (If he can question me, call my posts BS, I can do the same - stopped short of the BS part). I apologize for these lapses. However... I'm also a bit put off by the assumption that I'm BSing. I guess I'm just not used to it as this is not typical in my field. I don't even get why someone should BS in the first place. I feel like, as far as cooling goes, you folks all know lots more than I do. I had thought that to the extent that some of the stuff I do is "off the charts to the bottom" I might have the occasional bit to contribute, and was, indeed, trying to contribute, not pollute. I do have questions for AA, but am hesitant to ask them here as it may seem like continuing an argument. |
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06-05-2004, 01:35 PM | #23 |
CoolingWorks Tech Guy Formerly "Unregistered"
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do not take him so seriously
thin and big is best for silence, an ignored theme |
06-05-2004, 02:10 PM | #24 |
Cooling Savant
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Out of curiosity, how do the thermochill rads compare to the black ice range in terms of construction, restriction to airflow etc.
8-ball
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For those who believe that water needs to travel slowly through the radiator for optimum performance, read the following thread. READ ALL OF THIS!!!! |
06-05-2004, 02:33 PM | #25 |
CoolingWorks Tech Guy Formerly "Unregistered"
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similar rads, built as pricing suggests
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