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All fansinks are the same . . . well, all Golden Orbs are the same when they leave the Thermaltake plant: burningissues has just repeatedly tested two of them over twelve weeks on different CPU's at different vcores & they are EXACTLY the same. What's more, we've checked these tests against some carried out by a public-spirited fansink maker/designer who uses all sorts of expensive precision measuring-widgets; & his & our results agree within a couple of %

All of us know that if one of these two GOrbs goes onto a friend's machine they'll see different temperature readouts from their copy of MotherBoardMonitor; but the basic efficiency of the fansink - it's ability to wick heat from a CPU & radiate it into the airflow in a computer-case - has stayed, of course, EXACTLY the same.

This efficiency can be given a numerical value: it's called °C/W "sink-to-air" - °C/W s-a for short. It's the same number if worked out from our test-system, or in any other properly monitored system anywhere in the world. It's this portable & objective figure that burningissues & the fansink-maker compared.

To find out this efficiency you need a few accurate figures:

1) the CPU type, speed, vcore, & package-temperature

2) the temperature of the air in the computer [or room if you leave the case open]

3) the heatsink grease thermal resistance & thickness.

- you'll also need 90 seconds with a calculator.

What you'll find - if you measure CPU-temperatures through-case - is that the °C/W s-a for all & any GOrb's is 0.490 on a PPGA, 0.515 on a FC-PGA/Duron/TBird. If there's an error due to our methodology, it'll be towards being too optimistic [too low a figure] - this is because we don't measure the CPU-cap adjacent the core ["tcase"], but right through the CPU-package ["bcase"] - just like your mobo-sensor does but a helluva lot more accurately.

We said above: "all fansinks are the same" . . . . . but all fansink tests are not: here's some data from a spreadsheet we prepared after going to Google Advanced Search & punching in: "Golden Orb" + test : every published GOrb test found with an adequate quantity, if not quality, of information is included in the table below.

TEST	°C/W s-a	°C/W s-a	Test	Free	Test CPU	Real CPU	Test CPU	Real CPU	CPU	CPU MHz	CPU MHz	vcore	vcore	Watts	Watts	CPU cap	joint c-s	Kcm	°C/W	Ambient	Ambient	CPU @	CPU	°C/W j-a
SITES	from test	actual	Error %	Y/N?	temp °C	temp °C	temp °F	temp °F	Model	default	clocked	default	clocked	default	actual	area cm²	in cm	joint	joint	[room] °C	[case] °C	100% °C	Delta °C	from test
1	-0.028	0.490	106	Y	28.00	48.49	82	119	PPGA	300	504	2.00	2.30	17.8	39.55	6.25	0.0050	0.009	0.089	25.60		28.00	2.40	0.061
2	0.035	0.515	93	Y	36.00	53.48	97	128	FC-PGA	567	850	1.50	1.75	17.9	36.44	1.05	0.0020	0.009	0.212	26.40	27.00	36.00	9.00	0.247
3	0.038	0.515	93	Y	26.85	36.47	80	98	FC-PGA	550	616	1.65	1.67	17.6	20.19	1.05	0.0020	0.009	0.212		21.80	26.85	5.05	0.250
4	0.082	0.515	84	Y	45.00	72.08	113	162	TBird	1000	1100	1.75	1.79	54.3	62.49	1.05	0.0020	0.009	0.212	26.67	26.67	45.00	18.33	0.293
5	0.100	0.515	80	Y	29.00	38.58	84	101	FC-PGA	700	700	1.65	1.65	23.1	23.10	1.05	0.0020	0.050	0.038		25.80	29.00	3.20	0.139
6	0.121	0.515	76	Y	29.10	37.50	84	100	FC-PGA	500	667	1.65	1.65	16.0	21.33	1.05	0.0020	0.009	0.212	19.70	22.00	29.10	7.10	0.333
7	0.152	0.490	69	Y	47.00	62.89	117	145	PPGA	400	600	2.00	2.30	23.7	47.01	6.25	0.0070	0.009	0.124	25.50	34.00	47.00	13.00	0.277
8	0.154	0.490	69	Y	28.70	36.81	84	98	PPGA	433	433	2.00	2.00	24.1	24.10	6.25	0.0070	0.009	0.124	19.70	22.00	28.70	6.70	0.278
9	0.182	0.515	65	Y	36.00	44.78	97	113	FC-PGA	600	800	1.65	1.65	19.8	26.40	1.05	0.0020	0.009	0.212	25.60		36.00	10.40	0.394
10	0.205	0.515	60	N	33.00	41.18	91	106	FC-PGA	700	800	1.65	1.65	23.1	26.40	1.05	0.0020	0.009	0.212	22.00		33.00	11.00	0.417
11	0.213	0.515	59	N	37.00	47.68	99	118	FC-PGA	700	900	1.65	1.80	23.1	35.35	1.05	0.0020	0.009	0.212	22.00		37.00	15.00	0.424
12	0.221	0.515	57	N	32.00	38.79	90	102	FC-PGA	700	700	1.65	1.65	23.1	23.10	1.05	0.0020	0.009	0.212	22.00		32.00	10.00	0.433
13	0.243	0.515	53	N	31.00	36.39	88	97	FC-PGA	700	600	1.65	1.65	23.1	19.80	1.05	0.0020	0.009	0.212	22.00		31.00	9.00	0.455
14	0.255	0.515	51	Y	47.00	61.13	117	142	TBird	1000	1000	1.75	1.75	54.3	54.30	1.05	0.0020	0.009	0.212	21.67	21.67	47.00	25.33	0.466
15	0.245	0.490	50	?	43.00	51.20	109	124	PPGA	367	550	2.00	2.03	21.7	33.53	6.25	0.0070	0.009	0.124	30.60		43.00	12.40	0.370
16	0.370	0.490	24	?	37.00	40.39	99	105	PPGA	533	533	2.00	2.00	28.3	28.30	6.25	0.0070	0.009	0.124	19.00	23.00	37.00	14.00	0.495
17	0.383	0.490	22	Y	35.00	38.47	95	101	PPGA	367	550	2.00	2.00	21.7	32.55	6.25	0.0050	0.050	0.016	22.00		35.00	13.00	0.399
18	0.455	0.515	12	N	40.00	41.95	104	108	FC-PGA	533	840	1.50	1.65	17.1	32.59	1.05	0.0015	0.070	0.020	22.00	24.50	40.00	15.50	0.476
19	0.464	0.515	10	N	39.00	40.52	102	105	FC-PGA	533	800	1.50	1.62	17.1	29.92	1.05	0.0015	0.070	0.020	22.00	24.50	39.00	14.50	0.485
20	0.492	0.515	5	Y	57.00	58.19	135	137	Duron	650	900	1.50	1.85	24.3	51.18	1.05	0.0020	0.009	0.212	21.00	21.00	57.00	36.00	0.703
The following two entries are typical results from burningissues' recent test-series on two similar CPU's with two Golden Orbs
CPU#0	0.488	0.490	n/a	N	42.90	42.98	109	109	PPGA	367	550	2.00	2.04	21.7	33.86	6.25	0.0050	0.070	0.011	21.50	26.00	42.90	16.90	0.499
CPU#1	0.491	0.490	n/a	N	44.10	44.07	111	111	PPGA	367	550	2.00	2.11	21.7	36.23	6.25	0.0050	0.070	0.011	21.50	25.90	44.10	18.20	0.502

For some reason, maybe due to calculator-allergies, you don't see ° C/W s-a figures in the innumerable fansink tests posted up on hardware sites. It's a pity, because this is the only measure which might be called a fact, & is of real use to every reader worldwide.

We'll leave any comments on the standards of accuracy of h/w sites' testing-procedures to those living in unglazed houses; but an amusingly true point about the dangers of having dangerously hot components in your system was made by Kyle of hardocp:

"I think the graphic tells the entire story. At 143, you are going to have a hard time holding onto the HSF with an uncovered hand. If you can hold onto it for a few minutes your hands are probably very calloused and you are simply reading this during a recovery period."

- as you see; several GOrbs in the tests above were running - usually unknown to their testers - at temperatures around 140°F-160°F

BTW - most h/w sites publish "comparative" tests: the idea presumably being that even if the facts are wrong, they're the same wrong for all, & we can still get an idea of which fansink is better or worse. Looked at in another way, it's a scatter-gun approach, in the hope they'll hit at least one of the damn things while blazing away in the dark.

Weeeeeell: if you see a road-test of a Volks & a Corvette; you're unsurprised to read the Corvette is quicker. If at the same time you're told the Volks' top speed is 375mph . . . . . . . . . . makes you wonder about what road they're heading down & what map they're holding up.

< Taking your Computer's Temperature [howto]

Hot Air [analysis of measuring techniques] >

Calibrating MotherBoard Monitor(s) [howto & data] >>

copyright © shoarthing November 2000 for Burningissues.net - all rights reserved - with thanks to Andrew Lemont: a man who values fact.

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