How much AS5 on a GPU? - Page 2 - Overclock.net

BlankThis · 10-18-08

Fore a GPU you want a bout half a grain of rice and use your finger in a plstic bag to smear it around to cover the the part that stands out.

~B~

Arakasi · 10-18-08

Get it right people, we are not talking about NORMAL PASTE, we are talking about Artic Silver 5 which is what the user is speaking of using.
This is a conductive paste with metallic pieces inside the paste, i will stress this to prevent the other users from confusing you, DO NOT use a butt load of AS5 on your gpu as if it gets near any resistors and makes contact with them and your gpu you will short it out.
Factory authorized card dealers do not use as5 on their dies and they use normal non conductive paste and yes they use alot of it.

Small dot sized, spread it evenly with your finger, cover the die, apply your heatsink.

Penicilyn · 10-18-08

Quote:

Originally Posted by Dezixn

You use more on GPUs than on CPUs. When you go to clean off the old paste, you will see the manufacturer used a lot too.

That's the opposite of what you want to do. Manufacturers put WAY too much paste on their chips. Thats why we all reapply with less.

Pegasus · 10-18-08

Quote:

Originally Posted by Arakasi

Get it right people, we are not talking about NORMAL PASTE, we are talking about Artic Silver 5 which is what the user is speaking of using.
This is a conductive paste with metallic pieces inside the paste, i will stress this to prevent the other users from confusing you, DO NOT use a butt load of AS5 on your gpu as if it gets near any resistors and makes contact with them and your gpu you will fry it.
Factory authorized card dealers do not use as5 on their dies and they use normal non conductive paste and yes they use alot of it.

So how much is a lot? Do I put like a bb pellet sized drop and then spread it or what lol

Blameless · 10-18-08

GPUs usually have less surface area, so you use a correspondingly lesser amount of paste.

What's worked best for me (for bare dies) is spreading a thin layer, then putting a very small dab on top of the thin layer and letting the heatsink spread that.

Just using a thinly spread layer can sometimes leave small air pockets, unless you are very careful about spreading it and clamping down the heatsink.

Just applying a dab either means you may need to use more thermal grease than is necessary, if you want to make sure the entire die is covered (and it should be).

Also, AS5 won't fry a GPU, but you can short it, and may have to take it all apart and clean it well before it will work again.

OEMs use a lot of TIM to make assembling things easier. they have mostly unskilled workers just slap crap together. This is not at all ideal, but it's far more economical than the alternative. Also, using too much TIM will only make temps suck. Using too little can kill a GPU.

Pegasus · 10-18-08

Quote:

Originally Posted by Blameless

GPUs usually have less surface area, so you use a correspondingly lesser amount of paste.

What's worked best for me (for bare dies) is spreading a thin layer, then putting a very small dab on top of the thin layer and letting the heatsink spread that.

Just using a thinly spread layer can sometimes leave small air pockets, unless you are very careful about spreading it and clamping down the heatsink.

Just applying a dab either means you may need to use more thermal grease than is necessary, if you want to make sure the entire die is covered (and it should be).

Also, AS5 won't fry a GPU, but you can short it, and may have to take it all apart and clean it well before it will work again.

That sounds good to me...

Arakasi · 10-18-08

Quote:

Originally Posted by Blameless

Also, AS5 won't fry a GPU, but you can short it, and may have to take it all apart and clean it well before it will work again.

Pardon me on the fry, too much stressing leads my own information to sound newb... short it out, my mistake.

Trying to protect our member.

Pegasus · 10-18-08

Quote:

Originally Posted by Arakasi

Pardon me on the fry, too much stressing leads my own information to sound newb... short it out, my mistake.

Trying to protect our member.

Yeah my warrenty expired a week ago so I appreciate your post a lot

So I'm planning on adding like a grain of rice sized blob then spreading it, does that sound like an ok method?

Dezixn · 10-18-08

Quote:

Originally Posted by Penicilyn

That's the opposite of what you want to do. Manufacturers put WAY too much paste on their chips. Thats why we all reapply with less.

People are misunderstanding. Obviously you use less paste than you do with a CPU because of the smaller size, but you cover the whole GPU die, whereas a CPU you put a dot, spread it with the heatsink, and when you remove the heatsink only a portion of the CPU is covered.
I coulda been more clear on that but w/e...

And AS5 is fine to use... I've used it before and it works great, just don't get it on anything but the die.

Arakasi · 10-18-08

Yessir.

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How much AS5 on a GPU?

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