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[vr-zone] HD 4850/4870 are not high-end-chips - Page 9

post #81 of 86
Quote:
Originally Posted by pauldovi View Post
While you may find a general pattern between area and heat, there definitely isn't a relationship.

Its like saying saying the size of an engine is related to its power output. There are many additional factors that affect an engines power than simply its displacement.

There is a lot more that effects a processors power ouput that its area.
Like I stated, size is directly proportionate to the process of the transistors and their number. Heat is also directly proportionate to the process of the transistors and their number. But at the same time Heat and size have nothing to do with each other, but you have to admit there is a pattern.

If we knew the die size of the G92b, we could approximate the number of transistors and find out how much heat it would output compared to the G92. From that you'd get a very rough estimate of how hot the 9800GTX+ would be.
post #82 of 86
Quote:
Originally Posted by RussianGrimmReaper View Post
Like I stated, size is directly proportionate to the process of the transistors and their number. Heat is also directly proportionate to the process of the transistors and their number. But at the same time Heat and size have nothing to do with each other, but you have to admit there is a pattern.

If we knew the die size of the G92b, we could approximate the number of transistors and find out how much heat it would output compared to the G92.
Manufacturing process simply tells you the space between transistors, not the actual size of them. You also must account for additional components on board the chip that can take up space but not increase the heat at the same rate as the core transistors, for example, memory.
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post #83 of 86
Quote:
Originally Posted by pauldovi View Post
Manufacturing process simply tells you the space between transistors, not the actual size of them. You also must account for additional components on board the chip that can take up space but not increase the heat at the same rate as the core transistors, for example, memory.
I was only talking about the GPU die in this case, not including the entire heat output of the card.
post #84 of 86
Quote:
Originally Posted by pauldovi View Post
Manufacturing process simply tells you the space between transistors, not the actual size of them. You also must account for additional components on board the chip that can take up space but not increase the heat at the same rate as the core transistors, for example, memory.
when you take memory into account, the 9800 will most likely put out more heat than the 4870 because it uses GDDR3 which is slower, and more power hungry than GDDR5

Also, heat and Area really do have a connection man, because the more transistors, the more area..... the more heat.

55nm would be slightly cooler than 65nm at the same die size though obviously, because it requires less voltage.
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post #85 of 86
Yes They Are!
post #86 of 86
Quote:
Originally Posted by pauldovi View Post
Manufacturing process simply tells you the space between transistors, not the actual size of them. You also must account for additional components on board the chip that can take up space but not increase the heat at the same rate as the core transistors, for example, memory.
There's very little cache onboard a video processor versus a CPU, so it won't noticeably affect the heat output/power consumption or lack thereof. A GPU die is as densely packed as possible to conserve space too, so you can judge the number of transistors from the die size, especially considering they're all made at the same place using the same process (currently).
    
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