- Feb 19, 2009
- 10,457
- 10
- 76
I just snagged a gtx670 from my bitcoin mining adventures (which ASICs killed sadly), and I have to say, the reference cooler is impressive. I cannot remember ever when a reference design kept the card cool AND almost noiseless at load, its either hot or cool but very noisy.
I've always assumed the noise from blower coolers originate from the fast volume of air being pushed through the tiny exhaust area, like a gush of air sound. But looking closer at the gtx670 and comparing it to the 7970 blower open bench, the noise comes from the rush of air into the intake, small gaps/blades on AMD's reference blower makes this incredibly noisy at high CFM, whilst NV's blower this gen has larger blades spaced wider apart so even at high CFM its not an issue.
I can't imagine such a design is more costly to produce, just bigger blades, wider gaps, it will be the standard for next gen and onwards. Hopefully AMD stop being bad at making reference designs and relying on their partners to make custom coolers.
I've always assumed the noise from blower coolers originate from the fast volume of air being pushed through the tiny exhaust area, like a gush of air sound. But looking closer at the gtx670 and comparing it to the 7970 blower open bench, the noise comes from the rush of air into the intake, small gaps/blades on AMD's reference blower makes this incredibly noisy at high CFM, whilst NV's blower this gen has larger blades spaced wider apart so even at high CFM its not an issue.
I can't imagine such a design is more costly to produce, just bigger blades, wider gaps, it will be the standard for next gen and onwards. Hopefully AMD stop being bad at making reference designs and relying on their partners to make custom coolers.