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Why are all GPU's designed to be upside down?

AndrewB121
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I'm sure there's a good reason, but why aren't GPUs designed so that the heatsink is on the top? This has obvious aesthetic advantages, and would reduce the need for PCIe riser cables. It's basically a case of manufactures putting the 'end' on the other side right, and inverting the PCB. Perhaps motherboard manufacturers would have to slightly move PCIe slots/heatsinks? But not by any significant amount.This would make the fancy looking heatsink designs much more worthwhile, as they will be far more visible, and a backplate wouldn't be as necessary.

Maybe I'm just being dumb, it seems kinda obvious.

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1 minute ago, Slottr said:

Hot air rises 

Wouldn't this not make a difference? Either way the fans suck air in from the top and expel hot air out the sides, it will still rise up to the CPU. And this isn't a factor for blower cards.

CPU: AMD Ryzen 5 2600X  |  Cooler: Cryorig H7  |  Motherboard: MSI B450 Mortar  |  Case: Fractal Design Meshify C Mini  |  RAM: Team Vulcan 16GB  3000MHz  |  GPU: EVGA 1070ti Gaming (Kraken G12 Watercooled) |  PSU: Corsair TXM650  |  Storage: Samsung 860 EVO 500GB + WD Blue M.2 500GB  |  Network Card: Asus PCE-AC56  |  Monitor: Acer Nitro VG270U  |  Audio: Sennheiser HD6XX + Schiit Fulla 2

 

Laptop:

Lenovo s540:  CPU: AMD Ryzen 5 3500U  |  RAM: 8GB DDR4 2666MHz  |  GPU: AMD Radeon Vega 8  |  Storage: 256GB NVME SSD

 

Other builds:

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Workstation 1:

CPU: AMD Ryzen 7 2700X  |  Cooler: NZXT Kraken X62 Rev 2  |  Motherboard: MSI X470 Gaming Pro  |  Case: Corsair Crystal 570X  |  RAM: Corsair Vengeance LPX 32GB 3200MHz  |  GPU: Nvidia Quadro P5000  |  PSU: Corsair TXM750  |  Storage 1: WD Green 120GB  |  Storage 2: WD Blue 1TB  |  Storage 3: Seagate Barracuda 4TB  |  Monitor: LG 27UD68

 

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Just now, VegetableStu said:

because that's just how the original PCI specification was designed. there probably wasn't a conscious design decision to orient it this way or the other way?

I heard that it was because of compatibility with cards with a much older design (ISA slots?).

 

I figured since it was so long ago it would be possible and not too difficult to switch them around, but perhaps there isn't enough drive for it.

CPU: AMD Ryzen 5 2600X  |  Cooler: Cryorig H7  |  Motherboard: MSI B450 Mortar  |  Case: Fractal Design Meshify C Mini  |  RAM: Team Vulcan 16GB  3000MHz  |  GPU: EVGA 1070ti Gaming (Kraken G12 Watercooled) |  PSU: Corsair TXM650  |  Storage: Samsung 860 EVO 500GB + WD Blue M.2 500GB  |  Network Card: Asus PCE-AC56  |  Monitor: Acer Nitro VG270U  |  Audio: Sennheiser HD6XX + Schiit Fulla 2

 

Laptop:

Lenovo s540:  CPU: AMD Ryzen 5 3500U  |  RAM: 8GB DDR4 2666MHz  |  GPU: AMD Radeon Vega 8  |  Storage: 256GB NVME SSD

 

Other builds:

Spoiler

Workstation 1:

CPU: AMD Ryzen 7 2700X  |  Cooler: NZXT Kraken X62 Rev 2  |  Motherboard: MSI X470 Gaming Pro  |  Case: Corsair Crystal 570X  |  RAM: Corsair Vengeance LPX 32GB 3200MHz  |  GPU: Nvidia Quadro P5000  |  PSU: Corsair TXM750  |  Storage 1: WD Green 120GB  |  Storage 2: WD Blue 1TB  |  Storage 3: Seagate Barracuda 4TB  |  Monitor: LG 27UD68

 

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40 minutes ago, AndrewB121 said:

Wouldn't this not make a difference? Either way the fans suck air in from the top and expel hot air out the sides, it will still rise up to the CPU. And this isn't a factor for blower cards.

except the hot air out from the sides will rise up and the fans will suck it in again. doesnt matter if it's a blower or not.

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Just now, Jurrunio said:

except the hot air out from the sides will rise up and the fans will suck it in again. doesnt matter if it's a blower or not.

That's true, hadn't thought about that. Only blower cards would work then.

CPU: AMD Ryzen 5 2600X  |  Cooler: Cryorig H7  |  Motherboard: MSI B450 Mortar  |  Case: Fractal Design Meshify C Mini  |  RAM: Team Vulcan 16GB  3000MHz  |  GPU: EVGA 1070ti Gaming (Kraken G12 Watercooled) |  PSU: Corsair TXM650  |  Storage: Samsung 860 EVO 500GB + WD Blue M.2 500GB  |  Network Card: Asus PCE-AC56  |  Monitor: Acer Nitro VG270U  |  Audio: Sennheiser HD6XX + Schiit Fulla 2

 

Laptop:

Lenovo s540:  CPU: AMD Ryzen 5 3500U  |  RAM: 8GB DDR4 2666MHz  |  GPU: AMD Radeon Vega 8  |  Storage: 256GB NVME SSD

 

Other builds:

Spoiler

Workstation 1:

CPU: AMD Ryzen 7 2700X  |  Cooler: NZXT Kraken X62 Rev 2  |  Motherboard: MSI X470 Gaming Pro  |  Case: Corsair Crystal 570X  |  RAM: Corsair Vengeance LPX 32GB 3200MHz  |  GPU: Nvidia Quadro P5000  |  PSU: Corsair TXM750  |  Storage 1: WD Green 120GB  |  Storage 2: WD Blue 1TB  |  Storage 3: Seagate Barracuda 4TB  |  Monitor: LG 27UD68

 

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