Will My PSU Handle an RTX 5070 With a Daisy-Chained PCIe Connector?
Asked by
TechWizard99
I recently upgraded to an RTX 5070 graphics card, but I noticed that my PSU, a Thermaltake 700W Smart RGB non-modular unit, has the PCIe connector set up in a daisy-chain configuration (2x 6+2 pin). Previously, I was using a GTX 1070, which only required a single 6+2 pin connector. I've been searching online for advice, but I keep finding mixed information about whether this setup will be okay for the new GPU. I'm also planning to undervolt the card. Any thoughts on this?
Answers
If you're worried, it might be a good idea to consider switching to a new PSU instead of risking it. If you can share the model and revision of your PSU, someone could help verify its compatibility for you.
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250W might be "okay"; one 8-pin connector is rated for 225W, and two daisy-chained pins typically provide 275W max power.
WattWatcher: Where are you getting those numbers? One 8-pin is rated for 150W. There’s no universal standard for daisy chains. A decent PSU should have a cable rated for the full 300W, but cheaper units may not hold up.
CircuitSage: I understand one part but could you explain the second part about two daisy chains? I only have a single PCIe cable that's daisy-chained.
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You should be good with that GPU. If you take a few minutes to undervolt and cap your FPS, it can help minimize any issues that might arise with the 12VHPWR connector. I've got a 6800XT powered on the 550W version, and it's holding up just fine.
UndervoltNinja: I'll definitely be undervolting! I chose the 5070 for DLSS, as FSR on my 1070 was pretty blurry even on ultra settings at 1080p, especially in Helldivers 2.
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BuildBuddy01: His PSU can reliably output around 500W with minimal ripple, so it should be fine with that setup.
VoltageViper: The model number is PS-SPR-0700NHSAWU-1, just in case anyone needs it.