

Some video cards have an extra 6 pin connector just to add some room in case user wants to overclock the card (in which case the total power consumption may go over the slot's 65w limitation) Some video cards have total power consumption very close to 65 watts (the 12v limit for powering the card from slot, there's 10w more on 3.3v but nobody cares about that) so they add a pci-e 6 pin connector and balance the power to make it easy on motherboards, so they take 30-40w from slot and 30-40w from pci-e connector. People also don't seem to understand that just because a video card has one of those pci-e 6pin or 8 pin connectors, it doesn't mean that it would consume always 75 watts or 150 watts from that connector. It's obvious they limit these two models to 2 pci-e connectors so they won't cannibalize their other series, for example the TX 650M has 4 pci-e connectors : The Corsair CX 550 and CX 650 can output close to 550w on 12v and 650w yet they still only have 2 pci-e connectors :

for example Corsair with their value series, they sold 420w models with one pci-e 6pin and sold 500w or 550w models with 2 x pci-e 6+2pin or something like that.įor example Corsair CX 450 has 448 watts on 12v but only one pci-e connector : Some manufacturers limit the number of connectors to push people into buying higher wattage models (and spend a few dollars more). Such systems don't need 6pin or 8 pin connectors so the company placing the order tries to save a dollar on wires and connectors by not including those pci-e connectors. That Seasonic 350w OEM power supply was probably made for a company like HP or Lenovo which used it in a system equipped with a motherboard that had integrated graphics and no pci-e x16 slots, or just one pci-e slot, or it's was a SLIM style desktop which can only host half-height pci-e cards. Obviously we're not talking about high quality power supplies here. So you're telling me that you bought the wrong PSU because it didn't come with a 6 pin?Īnyway, a card that requires a 6 and 8 pin usually uses several hundred watts, so using a 400W chinese power supply to power that would be a horrible idea. so maybe this could still become a problem if the GPU is a real gas guzzler. I used one of these 2x molex to 1x 6 pin in my system and it was just fine. so having a 6 pin or not isn't really a relieable indicator if the psu is powerful or not. That seasonic psu says 350W on the sticker and has no 6 pin but i have seen 300w or even 250w units that had a 6 pin. so lack of quality should not have been the reason why there is no 6pin. Seasonic has a reputation for producing good quality psus AFAIK. Just before completing your order, take a moment to check for coupons and you’ll save even more on 6 pin molex connector.I bought a seasonic oem psu (one of the ugly grey ones) wich did not have 6 pin connectors.

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