- Mar 25, 2015
- 33
- 1
- 4,540
I have 2x 290X's in crossfire, drawing very different levels of power under load for the same clock speed. Both cards are cooled by AIOs and a Corsair HG10.
Primary Card: Diamond 290X (reference)- 198W
Second Card: Sapphire 290X (reference)- 246W
It's somewhat concerning because of the VRAM temps. The Diamond card VRM temps are 90/64, while the Sapphire is at 107/62. Core temps are fine under load, 67 and 62.
Doesn't matter which I place in the primary or linked; the Sapphire card draws more wattage than the Diamond. This happens when I use stock clock, or overclock (1066Mhz, +10% power).
Is this a setting issue? Or just different cards means different draws? Although a 24% increase is kind of odd...
Catalyst 16.8.2
Primary Card: Diamond 290X (reference)- 198W
Second Card: Sapphire 290X (reference)- 246W
It's somewhat concerning because of the VRAM temps. The Diamond card VRM temps are 90/64, while the Sapphire is at 107/62. Core temps are fine under load, 67 and 62.
Doesn't matter which I place in the primary or linked; the Sapphire card draws more wattage than the Diamond. This happens when I use stock clock, or overclock (1066Mhz, +10% power).
Is this a setting issue? Or just different cards means different draws? Although a 24% increase is kind of odd...
Catalyst 16.8.2
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