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Re: Ati Radeon 4870X2 released today
Posted: Tue Aug 19, 2008 12:19 pm
by Welsh
Sky wrote:BowzeR wrote:shoe horn!?
wtf is that artic shizzle
High performance thermal transfer compound, containing about 70% silver powder.
it can make about 3-5° difference on a bare cpu like an old athlon, but on new lidded cpu's best result is take the lid off and reseat it with artic silver then use it again between lid and HSF. Dont use too much though it is highly electrically conductive and a tiny bit will short out shitloads
in standard, welshified english pwz?

Re: Ati Radeon 4870X2 released today
Posted: Tue Aug 19, 2008 12:50 pm
by GrumpyOG
Sky wrote:BowzeR wrote:shoe horn!?
wtf is that artic shizzle
High performance thermal transfer compound, containing about 70% silver powder.
it can make about 3-5° difference on a bare cpu like an old athlon, but on new lidded cpu's best result is take the lid off and reseat it with artic silver then use it again between lid and HSF. Dont use too much though it is highly electrically conductive and a tiny bit will short out shitloads
Any tips on how to take the lids off? Apart from going round the edge very carefully with a scalpel or hoping it falls off with the heatsink
I use ceramique anywhere where there could be shorts as there's >1 degree difference to silver especially if its thin.
Re: Ati Radeon 4870X2 released today
Posted: Tue Aug 19, 2008 3:25 pm
by Sky
Haven't delidded any quads or core 2 duo's but athlon64 & p4/p4d lids were stuck down with silicon rubber. Best method is a very fine surgical scalpel blade (now where would a guy who works in a hospital get those?) Personally don't think it's necessary unless you're extreme overclocking, and Artic silver on the outside of the lid is just a waste.
Re: Ati Radeon 4870X2 released today
Posted: Tue Aug 19, 2008 10:02 pm
by umbongo(uk)
yeah grumps unless its giving you realy [sh*t] temps i wouldnt bother
you can always do the loo hole tube air duct jobbie
= /loo roll
+ /fan
<> /heatsink
diagram
<> + = +
lool
Re: Ati Radeon 4870X2 released today
Posted: Tue Aug 19, 2008 10:58 pm
by Sky
umbongo(uk) wrote:yeah grumps unless its giving you realy [sh*t] temps i wouldnt bother
you can always do the loo hole tube air duct jobbie
= /loo roll
+ /fan
<> /heatsink
diagram
<> + = +
lool
Must of missed that episode of Blue Peter

Re: Ati Radeon 4870X2 released today
Posted: Wed Aug 20, 2008 2:03 pm
by GrumpyOG
I've got a 9850be which has a maximum temp rating of 60 degrees, I'm running a scythe ninja 2 with 120mm fan to cool it and even though the overall temp (which I think is the rating one) only gets to 53 the individual cores peak at 61 after 20 mins of full load. I'd like to try clocking it quite a bit higher than the current 2750Mhz but will probably need to up the core volts a bit for that which will again up the temps
So ideally I'd like to do away with the heatspreader completely and water cool directly on the cores, But, since I can't afford wc or a couple of replacement chips, I reckon fitting the spreader properly will give me another 6-8 degrees to play with (it has on previous amd chips) but I've never stripped a quad before

Re: Ati Radeon 4870X2 released today
Posted: Wed Aug 20, 2008 3:36 pm
by LuMbErJaCk
You can lap the cpu and the Ninja to lower the temps maybe?
I takes a couple of hours to do it properly but what i've read about it you can surely take of 5/6 degrees
http://www.techpowerup.com/articles/cooling/39
http://www.overclock.net/air-cooling/22 ... orial.html
Re: Ati Radeon 4870X2 released today
Posted: Wed Aug 20, 2008 5:49 pm
by Sky
GrumpyOG wrote:I've got a 9850be which has a maximum temp rating of 60 degrees, I'm running a scythe ninja 2 with 120mm fan to cool it and even though the overall temp (which I think is the rating one) only gets to 53 the individual cores peak at 61 after 20 mins of full load. I'd like to try clocking it quite a bit higher than the current 2750Mhz but will probably need to up the core volts a bit for that which will again up the temps
So ideally I'd like to do away with the heatspreader completely and water cool directly on the cores, But, since I can't afford wc or a couple of replacement chips, I reckon fitting the spreader properly will give me another 6-8 degrees to play with (it has on previous amd chips) but I've never stripped a quad before

Sounds like a job for Bongy and his trusty Dremel

Re: Ati Radeon 4870X2 released today
Posted: Fri Aug 22, 2008 2:20 pm
by GrumpyOG
Do NOT try removing heatspreaders from quad core chips. They are soldered to the die and will kill the chip if forced.
Apparently they can be removed by careful use of a hot air gun but this has a 25% failure rate
Still removing the rubber seems to have given a better seat on the IHS and switching from the Ninja to a Zalman 9700 has the cores down to 51 degrees full load and cpu case temp down to 46

Re: Ati Radeon 4870X2 released today
Posted: Fri Aug 22, 2008 3:40 pm
by sw337
**spam**
