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<blockquote data-quote="Joutungwu" data-source="post: 1192674" data-attributes="member: 147600"><p>No, they don't. Have a look at this <a href="https://www.youtube.com/watch?v=zRGnCqN0w2E" target="_blank">Palit Video</a>. Go to position 0:30 min to see the airflow.</p><p></p><p>I guess, you misunderstood that. One fan rotates clockwise and the other fan rotates anti-clockwise. Therefore the clockwise rotating fan has inverted blades. So, both fans blow the air in the direction of the cooler. The advantage of this alternating rotation is to minimize the shear force of the air between the gap of the dual fans. This makes the fans more efficient and maybe reduces noises. I can't see all of your GPU fan modification, but i guess you just put two common anti-clockwise 120 mm case fans together and inverted one of them?</p><p>To copy the Jetstream design, you'd need a clockwise rotating fan, which is rather exotic, i assume. But this wouldn't make any sense, since common case fans have a frame, so that the (small) radial amount of the axial fans is guided axially anyway. No direct shear force between the framed fans, so i'd recommend to copy the original dual fan design of the card. Just revert the fan, which actually blows the air away.</p><p></p><p></p><p>With dust filters at all intake positions, underpressure is also no problem.</p><p></p><p></p><p>I would give it a try. You have a big 140 mm exhaust fan at the top, the PCI covers have some holes and the GPU helps blowing the hot air out of the case partly. As i said, your GPU cooler should better be rear exhausting only, according to the manual of Silverstone GD05B. The manual of your Lian Li doesn't tell much about that.</p><p></p><p></p><p>The PSU as an exhaust position for the whole system is rather old-fashioned. In modern systems the cooling of the PSU is separated from the rest. The Lian-Li PC-C60 as well as the Silverstone GD05B are both designed for modern PSU airflow separation. The PSU should suck cold air from the side and exhaust it to the rear, separated from the rest. You saw this big 140 mm grid made for the 120-140 mm PSU fan at the PSU position?</p></blockquote><p></p>
[QUOTE="Joutungwu, post: 1192674, member: 147600"] No, they don't. Have a look at this [URL='https://www.youtube.com/watch?v=zRGnCqN0w2E']Palit Video[/URL]. Go to position 0:30 min to see the airflow. I guess, you misunderstood that. One fan rotates clockwise and the other fan rotates anti-clockwise. Therefore the clockwise rotating fan has inverted blades. So, both fans blow the air in the direction of the cooler. The advantage of this alternating rotation is to minimize the shear force of the air between the gap of the dual fans. This makes the fans more efficient and maybe reduces noises. I can't see all of your GPU fan modification, but i guess you just put two common anti-clockwise 120 mm case fans together and inverted one of them? To copy the Jetstream design, you'd need a clockwise rotating fan, which is rather exotic, i assume. But this wouldn't make any sense, since common case fans have a frame, so that the (small) radial amount of the axial fans is guided axially anyway. No direct shear force between the framed fans, so i'd recommend to copy the original dual fan design of the card. Just revert the fan, which actually blows the air away. With dust filters at all intake positions, underpressure is also no problem. I would give it a try. You have a big 140 mm exhaust fan at the top, the PCI covers have some holes and the GPU helps blowing the hot air out of the case partly. As i said, your GPU cooler should better be rear exhausting only, according to the manual of Silverstone GD05B. The manual of your Lian Li doesn't tell much about that. The PSU as an exhaust position for the whole system is rather old-fashioned. In modern systems the cooling of the PSU is separated from the rest. The Lian-Li PC-C60 as well as the Silverstone GD05B are both designed for modern PSU airflow separation. The PSU should suck cold air from the side and exhaust it to the rear, separated from the rest. You saw this big 140 mm grid made for the 120-140 mm PSU fan at the PSU position? [/QUOTE]
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