I just received my T61 14.1" widescreen. The fan runs a fair bit - and I'm wondering if it has to do with the aluminium heatsinks I have (they're the color of the steel hinges). They look sparse compared to all the pictures I've seen online and in reviews - where you can clearly see the reddish-brown copper color on the T61.
Does anyone else have steel/aluminium heatsinks?
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Mine are the reddish-brown color on the T61 15.4" widescreen with the 2.0Mhz 7300 processor. It was built and shipped out of China around 7/15. I notice the fan coming and off, but frankly is it so quiet, I don't pay much attention to it.
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i remember seeing copper when i installed my ram but now you got me curious, will take this thing apart when i get home later
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copper color here on 1 T61 and 2 R61's
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copper color here on a T61
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copper on my t61
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Copper on my T61 here also.
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Copper here too (7664 16U)
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Aluminum on the T61 I ordered...
7658CTO CTO THINKPAD T61
42V8191 INTEL CORE 2 DUO PRCESST7500
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42X0905 SBB INTELGMA960W/1394,
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42V8195 SBB KEYBOARD US ENGLISH
42V9330 SBB UN(TRACKPOINT+TCHPD)+
42V9126 SBB 160GB HDD,5400RPM W FDE
42V8715 SBB DVDREC8XMAXDUALLAY,UBAYSLM
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62P6054 VBB INTEGR.BLUETOOTH PAN
39T4822 VBB WWAN
42V9334 SBB WAN
42V9339 SBB 7 CELL LI-ION BATERRY
41W1787 SBB CPK NORTH AMERICA
27R1769 SBB PSTN CABLE
42V9354 SBB LANG. PACK US ENGLISH
42V9428 SBB PACKAGING US
39T6440 SBB 56K V.92 DESIGNED MODEM
42V9685 SBB CINGULAR OPTION
42V8648 SBB CL.PLATE T61WL BT WWAN
42V9665 SBB FCC, LABEL
42W7002 SBB FCC-ID/LABEL FOR WWAN
42V9667 SBB GEO LABEL US, WLAN,BT
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42V9630 SBB NOINT WWANANTN14.1"SIM W/
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42V8229 SBB MS LABEL (XP)
42V9651 SBB MT 7658 SYSTEM LABEL
42X0929 SBB MECH MISC PARTS
42T7135 SBB INTEL LABEL CORE-2
42V8239 SBB ODD SW DVD REC
42X1352 SBB PC CARDSLOT EXPRESCARDSLOT
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42V9634 SBB STAND LCD C/B
42X0915 SBB WLAN MISC PARTS
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42W7001 SBB WWAN OPTION #3
42X1482 SBB BLUETOOTH W/ ANTENNA
42X1702 SBB BLUETOOTH SCREW -
Hmm, most people have copper. It make me feel better that one other has aluminium, but somehow I feel like we've been victims of cost cutting measures. -
Copper is a better conductor, but also weighs significantly more. So yeah, it may not cool as well (talking a few degrees difference) but the tradeoff is yours is lighter.
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Copper here
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copper here. 14.1 WXGA+
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Copper here also.
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hmm..im gonna be pissed if i get aluminum...just ordered a t61...looks like 1 guy got the aluminum..and he has the t7500
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I have the T7500 and copper
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I would assume that they use aluminum on only T61's with the X3100, as it outputs significantly less heat than a dedicated GPU. Plus, if I remember correctly, copper absorbs heat more quickly than aluminum but aluminum dissipates it a tad bit faster, so it can be a bit of a tradeoff. If you check the actual heat transfer surface touching the CPU, that is definitely copper, as is the heat pipe that carries the heat to the heat sink.
What I would wonder about more than the material used is if the fin density differs at all. That can make a bigger difference than which material they used as more fins = more surface area to let heat off of. -
Unless they pulled a fast one and mixed copper and aluminum inside, I haven't pulled off the keyboard so I don't know. -
The cost of copper has gone up dramatically over the last year or so. And aluminum is very efficient as a heatsink and has been pretty much the standard metal for heatsinks in consumer and professional products. I think there is some evidence that black anodized heatsinks radiate heat more efficiently, however.
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Upon further inspection in the daylight(i checked last night in the dark using a cell phone as my source of light), I see that my heat sink seems to have copper surfaces with aluminum fins. I have integrated graphics and a T7300 processor.
I don't mind because I have owned some serious heat sinks on my desktops back in the day(I was an avid amd overclocker....ahhh the good ol FOP38 days) and they all had a copper contact surface along with aluminum fins/spreaders.
I don't think this was a cost cutting procedure, I think that this type of heatsink is much more efficient, as mentioned before copper to quickly absorb the heat, and aluminum to quickly dissipate it. -
here are some visual aids...taken with a camera phone, so I apologize in advance, but I think these with suffice.
Attached Files:
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Panteedropper: Your pictures looks like mine. It looks like it is a mix of copper and AL. Well, I guess it's nothing to worry about after all. I'm not sure that it is "much" more efficient, I'm still surprised at how much the fan runs.
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Your pics are great. Mine looks like that. Copper at edge, aluminum fins.
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Read this http://episteme.arstechnica.com/6/ubb.x?a=tpc&s=50009562&f=77909585&m=106091502
In essence, it is better to have a pure copper heatsink rather than a AL/CU mixed heatsink, but the differences are not that significant. -
mine is aluminium. but hey i have a question does it make a difference.
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so i found this article on heatsinks:
http://episteme.arstechnica.com/6/ub...85&m=106091502
and although a Copper heatsink is heavier than a heatsink,
"...a pure copper heatsink will always outperform a heatsink of the exact same geometry of a pure aluminum heatsink assuming that both have the same contact with the heat source and the same rate of airflow over the surface."
unfortunately, although "all tests I have seen show that copper heatsinks do outperform aluminum, [they don't do so] by much"
BOTTOM LINE: copper heatsinks have a slight edge over aluminum ones in terms of cooling currently, but similar heatsinks made of either material are pretty much the same -
I have the aluminum one...but i dont' mind..since i have the intel gpu...i guess copper is better for those who have a dedicated gpu
T61: Do you have an aluminium or copper heatsink?
Discussion in 'Lenovo' started by betty, Aug 3, 2007.