GFX card Ramsinks?

[Cyber-Mav]

mate has a shop near him that sells thse 2 items: he wants to get a kit but not sure on which one
http://www.thermaltake.com/product/Cooler/VGAnCHIPnMEM/CL-P0025CL-P0026/CL-P002526.asp

price is the same for either kit. which would you guys go with, copper or aluminum?

 

[sunlitsix]

copper

All copper sink ensures the best heat dissipation

 

[Cyber-Mav]

any more advances on this? will give it till tomorrow then tell him which ones to buy based on the number of votes i get in this thread.

i also assume copper would be the best, also noted that 2 aluminum heatsink weighs 2g and copper one weighs 10g

 

[TaKeN]

Zalman make their coolers from copper, so go with them

 

[Cyber-Mav]

Zalman make their coolers from copper, so go with them

yea but thier ram sinks are aluminium, well the ones i got with my vf900cu are aluminium anyways. mate is just after ramsinks, nothing more.

 

[TaKeN]

Cyber mav just found a website that says

THIS : >>> The following materials are commonly used for heatsinks:


Aluminum. It has a thermal conductivity of 205W/mK, which is good (as a comparison: steel has about 50W/mK). The production of aluminum heatsinks is inexpensive; they can be made using extrusion Due to its softness, aluminum can also be milled quickly; die-casting and even cold forging are also possible (see part 2 of this guide for more information about production methods). Aluminum is also very light (thus, an aluminum heatsink will put less stress on its mounting when the unit is moved around).

Copper's thermal conductivity is about twice as high as aluminum - almost 400W/mK. This makes it an excellent material for heatsinks; but its disadvantages include high weight, high price, and less choice as far as production methods are concerned. Copper heatsinks can be milled, die-cast, or made of copper plates bonded together; extrusion is not possible.


BASICALLY COPPER IS THE ONE TO GO FOR

 

[Cyber-Mav]

right, just rang him up and told him to get the copper kit.
thanks all.

 

[TaKeN]

No problem mate

 

[LoadsaMoney]

Doh!! Aluminiums what yer want.
























j/k

 

[Cyber-Mav]

normally im clued up on this, but the thing is for passive cooling iv always thought that aluminium would be better since it can dissipitate the heat faster, where as copper can conduct the heat quicker but its the same conduction properties that slow down its rate of dissipitation.

usually copper heatsinks would perform better if they have more airflow over them.
not too sure on this though......

 

[TaKeN]

TBH Mate im sure the difference is less than 1oc between em

I wouldn't worry about it

 

[Arthalen]

Copper - I'm using those same ramsinks on the Mosfets and Voltage regulators all over my motherboard - they do a terrific job of cooling and help keep my mobo temps down