Low Clock Speeds Reported on Secondary 5850 card

Xaiin · Dec 11, 2009, 10:47 AM

Hi guys,

Just wondering if anybody can answer this question....

I have 2 newly fitted crossfire'd ati radeon 5850's fitted in my machine. I ran GPU-Z last night to ensure all was looking good, on the first card as expected core speed 725MHz, memory 1000Mhz, problem however is with the secondary one. It reported much lower speeds with a core of about 125Mhz and memory of around 300MHz.

Anybody have any idea what might cause that? Is it a problem with the software? with my configuration or a feature of the crossfire standard maybe when the machine isnt doing much and it powers down.

Any comments appreciated ?

Thanks

W1zzard · Dec 11, 2009, 10:51 AM

looks like the 2d idle clocks. are they shown on the main tab like this or on the sensors tab ?

Xaiin · Dec 11, 2009, 11:18 AM

The main page has the values correct, it's on the sensors tab where I noticed the slow speed.

Is it just a feature of the cards to clock themselves down ?

W1zzard · Dec 11, 2009, 11:37 AM

as the tooltip shows, the sensor page shows realtime clock speeds. it is a feature of most current graphics cards to clock down when they are idle to save power

Xaiin · Dec 11, 2009, 11:54 AM

Just seemed odd that it was only the secondry one showing the lower clock speeds and not the primary one, the mahcine wasn't doing anything just browsing the net etc...

Dec 11, 2009, 10:47 AM	#1
Xaiin Join Date: Dec 2009 Posts: 3 (0.00/day) Thanks: 0 Thanked 0 Times in 0 Posts	Low Clock Speeds Reported on Secondary 5850 card Hi guys, Just wondering if anybody can answer this question.... I have 2 newly fitted crossfire'd ati radeon 5850's fitted in my machine. I ran GPU-Z last night to ensure all was looking good, on the first card as expected core speed 725MHz, memory 1000Mhz, problem however is with the secondary one. It reported much lower speeds with a core of about 125Mhz and memory of around 300MHz. Anybody have any idea what might cause that? Is it a problem with the software? with my configuration or a feature of the crossfire standard maybe when the machine isnt doing much and it powers down. Any comments appreciated ? Thanks

Processor:	Intel Core i7-2600K @ 3.4 GHz
Motherboard:	ASUS P8Z68-V Pro
Memory:	3x 2048 MB Mushkin DDR3
Video Card:	ASUS GeForce GTX 670 Direct CU II TOP
Hard Disk:	Crucial C300 128 GB, WD6400AAKS 640 GB, WD15EADS 1.5 TB
Optical Drive:	BenQ DW1640
CRT/LCD Model:	Dell U3011 30", 2560x1600 + 19" 1280x1024
Case:	NZXT H2
Sound Card:	On-board Realtek HD
PSU:	Kingwin Absolute Platinum 550 W
Software:	Windows 7 64-bit

Processor:	Intel Core i7-2600K @ 3.4 GHz
Motherboard:	ASUS P8Z68-V Pro
Memory:	3x 2048 MB Mushkin DDR3
Video Card:	ASUS GeForce GTX 670 Direct CU II TOP
Hard Disk:	Crucial C300 128 GB, WD6400AAKS 640 GB, WD15EADS 1.5 TB
Optical Drive:	BenQ DW1640
CRT/LCD Model:	Dell U3011 30", 2560x1600 + 19" 1280x1024
Case:	NZXT H2
Sound Card:	On-board Realtek HD
PSU:	Kingwin Absolute Platinum 550 W
Software:	Windows 7 64-bit

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Dec 11, 2009, 10:51 AM	#2
W1zzard Benevolent Dictator Join Date: May 2004 Location: Stuttgart, Germany Posts: 13,770 (4.18/day) Thanks: 184 Thanked 10,218 Times in 3,161 Posts System Specs	looks like the 2d idle clocks. are they shown on the main tab like this or on the sensors tab ?

Dec 11, 2009, 11:18 AM	#3
Xaiin Join Date: Dec 2009 Posts: 3 (0.00/day) Thanks: 0 Thanked 0 Times in 0 Posts	The main page has the values correct, it's on the sensors tab where I noticed the slow speed. Is it just a feature of the cards to clock themselves down ?

Dec 11, 2009, 11:37 AM	#4
W1zzard Benevolent Dictator Join Date: May 2004 Location: Stuttgart, Germany Posts: 13,770 (4.18/day) Thanks: 184 Thanked 10,218 Times in 3,161 Posts System Specs	as the tooltip shows, the sensor page shows realtime clock speeds. it is a feature of most current graphics cards to clock down when they are idle to save power

Dec 11, 2009, 11:54 AM	#5
Xaiin Join Date: Dec 2009 Posts: 3 (0.00/day) Thanks: 0 Thanked 0 Times in 0 Posts	Just seemed odd that it was only the secondry one showing the lower clock speeds and not the primary one, the mahcine wasn't doing anything just browsing the net etc...

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