David-Duc
09-16-2009, 11:58 PM
Everyone who used or using the reference HD4870 is totally scared by the card's noise and heat, this led me to the modding of my HIS HD4870 512MB BIOS so it can lower core/mem clock to a deeper stage, but this is what I'm considering about:
-ATi has set the card idle clock at 500/900 for core/mem, respectively - idle VDDC Current around 25Amps, this result in 70°C+ GPU temp with 27% fan speed :eek:. No changes in memory clock (because with GDDR5, memory clock change will result in a screen flicker).
-My modded BIOS has idle clock at 300/500 for core/mem - I've encountered a significant heat and noise reduction: idle VDDC Current around 14.5Amps, 58°C+ GPU temp with 29% fan speed. But everytime the card change it's memory clock, the screen flicker (I heard this is caused by GDDR5).
So I'm not sure if it is safe or dangerous to let my card run with this modded BIOS, since I have my comp running 24/7 and most of the time it's idle.
Does the continuously change of memory clock hurt the memory chips ?
-ATi has set the card idle clock at 500/900 for core/mem, respectively - idle VDDC Current around 25Amps, this result in 70°C+ GPU temp with 27% fan speed :eek:. No changes in memory clock (because with GDDR5, memory clock change will result in a screen flicker).
-My modded BIOS has idle clock at 300/500 for core/mem - I've encountered a significant heat and noise reduction: idle VDDC Current around 14.5Amps, 58°C+ GPU temp with 29% fan speed. But everytime the card change it's memory clock, the screen flicker (I heard this is caused by GDDR5).
So I'm not sure if it is safe or dangerous to let my card run with this modded BIOS, since I have my comp running 24/7 and most of the time it's idle.
Does the continuously change of memory clock hurt the memory chips ?