Ok after all these hair brain ideas b/c i figured it was guarented stock speed.

Well i underclocked the Video (gpu and memory) from 350/500 (stock) to 300/400 and guess what, no dots, no pink artifacts, no green pixels, no flashing textures.

Ah why isn't anything cooling this thing under the keyboard?????? just the heatplate from the keyboard on here thats all, no heatpipe going over to the fan or what!!!!!

I want a fix for this bull, i don't wanna underclocked this thing to get non-artifacting since i paid for stock speeds.

DaveM!!!

Well seems your sager is hotter then the rest. Mine hasn't had this problem? :P I'm thinking about putting some arctic silver directly on my radeon card to make it a lot cooler!

Arctic Silver on its own wont do anything, you need something to transfer to. i havent seen the innards of a 4780, but more than likely the GPU is isolated from anything else by "air space" for nonexistant airflow to cool it. one of my older laptops artificating problem (it has a Radeon M7 in it) was solved by putting a pair of copper chip cooler (the kind you put on single chips of ram) heat sinks on it, there was just enough overhead to get them in there and they quadruple its surface area and thermal conductivity.

Stock speeds on the 4780 are nowhere near 350/500 -- in the BIOS, they're set to 350 (core)/250 (memory). Mine runs fine at 400/300, too, but that's *overclocking* from the defaults, not underclocking.

I dont see why they should redesign it, if it seems you are one of the only ones with this problem.

lol funny thing is after i noted that I got 5 pm's on how did i do it they are having the same problem

Oh yeah 500 ddr = 250x2 , so I had to underclock it from 350/250 (2x250=500 ddr speeds) to 350/225 (450 ddr speeds). So I got it a little higher, check out the review of the 4780 that thing is designed like ass, its a heat issue. All there is is a heatshield over the radeon and its ram and then the keyboard.

DaveM

Wtf, I have not experienced ANY "artifacting" on my 4780.

I would assume you got a dud and should have RMAed it.

well its not to late to do that .

only like 2 and a half months old now.

, i'm thinking about it but i can't go to long without it.

DaveM

wow this really was a problem. I had the same problem right out of the box with my 4780, big time artifacts (i even have some video footage of this if anyone wants to see, had to take it for a RMA) i gave the laptop 20 days and back it went. I told them that i wanted to keep my hard drive and perfect screen so they just replaced the motherboard and that fixed the problem. One thing that i did notice is: if you look in the rear of the 4780 you will see there is room for additional heatsink (right where the gpu is) and a slot for another fan that is blocked off. I think sager removed these for cost reasons and to reduce the noice, bulk...ext. I think that if we get enough people together and request this part, maybe just maybe they can give us a part number to order. looks like this laptop was made with cost in thought rather than performance.

check my original post on this :

http://notebookforums.com/showthread...075#post195075