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[Kitguru] Sapphire 7870 XT (Tahiti LE) review - Page 4

post #31 of 48
Quote:
Originally Posted by JunkoXan View Post

looks like you can do "The AMD Mod" on the sapphire one as it looks like it has some good heatsinks on it biggrin.gif

What's the "AMD Mod"?

    
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post #32 of 48
Quote:
Originally Posted by eBombzor View Post

Quote:
Originally Posted by JunkoXan View Post

looks like you can do "The AMD Mod" on the sapphire one as it looks like it has some good heatsinks on it biggrin.gif
What's the "AMD Mod"?


similiar to the geforce mod where you take a watercooling kit for a cpu like the 620 or H50 and back then before someone made custom brackets they used zip ties to secure it on the GPU, but someone on OCN created custom brackets so it'll give even disturbution of pressure to the GPU core compared to the zip tie method which could have a uneven disturbution of needed pressure for the contact to be optimal enough to cool the GPU core itself.

The Mod was extremely popular with the GTX 480 due to the 480 being extremely hot around 100c-103c under extreme load, but when The Mod is applied it drops considerable to very good temperatures like 60-70 or lower sometimes depending on fans used and how good the air flow in your system is. consider it as a non-technical way of cooling compared to a full custom waterloop where you got to piece it all just right and have the water and additives for it to work as it should and also don't need to drain it every 4-6 months because of the water and additives going really bad and not become efficient for heat transfer.
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post #33 of 48
Quote:
Originally Posted by JunkoXan View Post

Quote:
Originally Posted by eBombzor View Post

Quote:
Originally Posted by JunkoXan View Post

looks like you can do "The AMD Mod" on the sapphire one as it looks like it has some good heatsinks on it biggrin.gif
What's the "AMD Mod"?



similiar to the geforce mod where you take a watercooling kit for a cpu like the 620 or H50 and back then before someone made custom brackets they used zip ties to secure it on the GPU, but someone on OCN created custom brackets so it'll give even disturbution of pressure to the GPU core compared to the zip tie method which could have a uneven disturbution of needed pressure for the contact to be optimal enough to cool the GPU core itself.

The Mod was extremely popular with the GTX 480 due to the 480 being extremely hot around 100c-103c under extreme load, but when The Mod is applied it drops considerable to very good temperatures like 60-70 or lower sometimes depending on fans used and how good the air flow in your system is. consider it as a non-technical way of cooling compared to a full custom waterloop where you got to piece it all just right and have the water and additives for it to work as it should and also don't need to drain it every 4-6 months because of the water and additives going really bad and not become efficient for heat transfer.

What about the VRMs on the board? You still need to cool VRMs.

    
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post #34 of 48
Quote:
Originally Posted by eBombzor View Post

Quote:
Originally Posted by JunkoXan View Post

Quote:
Originally Posted by eBombzor View Post

Quote:
Originally Posted by JunkoXan View Post

looks like you can do "The AMD Mod" on the sapphire one as it looks like it has some good heatsinks on it biggrin.gif
What's the "AMD Mod"?



similiar to the geforce mod where you take a watercooling kit for a cpu like the 620 or H50 and back then before someone made custom brackets they used zip ties to secure it on the GPU, but someone on OCN created custom brackets so it'll give even disturbution of pressure to the GPU core compared to the zip tie method which could have a uneven disturbution of needed pressure for the contact to be optimal enough to cool the GPU core itself.


The Mod was extremely popular with the GTX 480 due to the 480 being extremely hot around 100c-103c under extreme load, but when The Mod is applied it drops considerable to very good temperatures like 60-70 or lower sometimes depending on fans used and how good the air flow in your system is. consider it as a non-technical way of cooling compared to a full custom waterloop where you got to piece it all just right and have the water and additives for it to work as it should and also don't need to drain it every 4-6 months because of the water and additives going really bad and not become efficient for heat transfer.
What about the VRMs on the board? You still need to cool VRMs.

a fan directed to the heatsinks pulling cool air in will be enough
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post #35 of 48
Quote:
Originally Posted by JunkoXan View Post

a fan directed to the heatsinks pulling cool air in will be enough

i don't think it will be nearly as good as water cooling them but it will help.


The good thing about this card is that the VRMS do have a very nice looking heat sink but only 4 of the eight ram ICs will have a heat sink if you take the stock heat sink off because the stock heat sink also cools 4 of the 8 memory IC's.

I'm going to water cool my 7870 XT with a MCW80 but I am not sure what I am going use to cool the memory. I have a few ideas. Nothing certain yet.
Edited by SonDa5 - 2/4/13 at 12:37am
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post #36 of 48
it may not be as good but it helps and depending on what fan you use it can be just enough biggrin.gif as for the 4 memory chips i don't know either would be nice if they had a heatsink on them as well...

i do have my Ultra Kaze 3000 fans around that i can use, they push alot of air similiar to a hair drier biggrin.gif
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post #37 of 48
Does anybody know if the sapphire hd 7870 xt needs a pwm fan connector, it doesnt say on the website?
post #38 of 48
pretty sweet gpu thumb.gif
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post #39 of 48
Quote:
Originally Posted by williamsd View Post

Does anybody know if the sapphire hd 7870 xt needs a pwm fan connector, it doesnt say on the website?

The fan is connected on the PCB of the card.
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post #40 of 48
Quote:
Originally Posted by adridu59 View Post

The fan is connected on the PCB of the card.

so it doesnt need an extra connector, the fans just have their power from the 2 6 pins?
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