Sapphire Radeon HD4870 512MB not running at stock speeds

Ryuujin · Aug 3, 2008, 02:12 PM

According to AMD overdrive, and CCC my card is running at 500Mhz core speed, and 900Mhz memory. I thought stock speeds was set at 750Mhz for the core. Whats up with that. I'm running Cat 8.7, having some issues in COD4, "display drivers not responding" as well. Something's fishy. Any got any ideas/clues what to do?

H82LUZ · Aug 4, 2008, 12:10 PM

those are the pwoer saving clocks = 2d desktop ,Get the tool GPU-Z ,Your 750 -900 clocks kick in when a 3D ap starts.

GPU-Z Video card GPU Information Utility

Here is My Sapphire running the Asus top BIOS.

techPowerUp GPU-Z Validation uqy3w

SeraphicSorcerer · Aug 4, 2008, 01:51 PM

Yeah that sort of freaked me out to, but I noticed anytime you kick up something 3d, then it goes to your 3D set speeds. What I don't understand is if it kicks down, why does it still take so much power at idle?

sammorris · Aug 11, 2008, 09:50 PM

it doesn't undervolt, only underclock, hence the power usage.

Aug 3, 2008, 02:12 PM	#1
Ryuujin DriverHeaven Newbie Join Date: Jul 2004 Posts: 3 Rep Power: 0	Sapphire Radeon HD4870 512MB not running at stock speeds According to AMD overdrive, and CCC my card is running at 500Mhz core speed, and 900Mhz memory. I thought stock speeds was set at 750Mhz for the core. Whats up with that. I'm running Cat 8.7, having some issues in COD4, "display drivers not responding" as well. Something's fishy. Any got any ideas/clues what to do?

Aug 4, 2008, 12:10 PM	#2
H82LUZ HardwareHeaven Lover Join Date: Jan 2004 Location: Cobourg ,Ontario ,Canada Posts: 114 Rep Power: 55 System Specs	those are the pwoer saving clocks = 2d desktop ,Get the tool GPU-Z ,Your 750 -900 clocks kick in when a 3D ap starts. GPU-Z Video card GPU Information Utility Here is My Sapphire running the Asus top BIOS. techPowerUp GPU-Z Validation uqy3w __________________

Aug 4, 2008, 01:51 PM	#3
SeraphicSorcerer HardwareHeaven Senior Member Join Date: Jul 2002 Location: Florida Posts: 2,295 Rep Power: 156 System Specs	Yeah that sort of freaked me out to, but I noticed anytime you kick up something 3d, then it goes to your 3D set speeds. What I don't understand is if it kicks down, why does it still take so much power at idle? __________________

Aug 11, 2008, 09:50 PM	#4
sammorris HardwareHeaven Lover Join Date: Aug 2008 Location: Brentwood or York, UK Posts: 178 Rep Power: 26 System Specs	it doesn't undervolt, only underclock, hence the power usage.