GPU Upgrade for Mac Pro 1,1 running Windows 10

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Level 1

4 points

GPU Upgrade for Mac Pro 1,1 running Windows 10

Hi, I'm running a Mac Pro 1,1 with 14GB of RAM and an 8 core Xeon X5355. In terms of GPU I have the stock 7300GT for boot and a Quadro NVS 295. The 295 is not exactly a gaming GPU so I was hoping to upgrade the machine. Since I'm running Windows and I have the stock GPU I do not need a flashed GPU. Power was more my concern. I have been thinking of a GT 1030 or a 1650 OC as they do not need external power. Is there a way to get external power to a more powerful GPU, can I buy a new power supply? Ive seen six pins on the motherboard but I thought it was sketchy as its not directly coming from the PSU

Mac Pro

Posted on Jul 29, 2021 12:08 PM

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Answer 1

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padams35

Level 4

3,307 points

Jul 31, 2021 5:47 AM in response to MrMcRibYT

Those mini-pin auxiliary power connectors exist for powering GPUs and slightly exceed the standard 6-pin power deliver standard. You can safely pretend each is a 6-pin connector and run anything up to 2x6-pins or 1x8-pin with a dual 6-to-8 adapter without issue.

Note: the Old Mac Pro 1,1 uses PCIe v1.0 so expect some minor frame rate losses from the lower bandwidth.

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Answer 2

MrMcRibYT Author

Level 1

4 points

Jul 31, 2021 12:41 PM in response to padams35

Thanks for the info, I'n thinking of putting a RX 270x or a GT 1030 as they go for around the same price, but the GT 1030 is less hassle to install. Any good GPU recommendations for under £120 for this Mac?

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GPU Upgrade for Mac Pro 1,1 running Windows 10

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