I deduce from this that the GPU wasn't the problem in the first place and promptly put my old one back.
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It allows two standard 4 pin Molex plugs to connect into the 6 pin power socket on a PCI-E graphics card. - Connector A: 4Pin Dual Molex IDE Male.
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The Palit Nvidia GeForce GTX 650 1GB graphics card GPU is a reliable and high-performance component for your computer. With DVI-D and HDMI connectors, it offers versatile connectivity options for your monitor or display. The NVIDIA GeForce GTX 650 chipset ensures smooth graphics processing, while the 1GB GDDR5 memory size provides ample space for storing images and video data. The cooling component, including a fan with heatsink, helps to keep the card running smoothly during intense gaming or graphic-intensive tasks. This GPU is compatible with PCI Express 3.0 x16 slots and is a great choice for enhancing your computer's graphics capabilities.
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Dell AMD FirePro V5900 Graphics Card. DVI/DisplayPort x2.
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Sapphire HD5450 Silent Graphics Card. Nice clean card in full working order, tested.
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The Zotac GeForce GTX 1050Ti 4GB 128Bit Graphics Card is a high-performance graphics card from NVIDIA, offering seamless support for APIs like DirectX 11, 10, and 12. With 4GB of GDDR5 memory and multiple connectors including DisplayPort, DVI, and HDMI, this card is perfect for gaming and other intensive graphics applications. The cooling system, featuring a fan with heatsink, ensures optimal performance even under heavy load. Compatible with PCI Express 3.0 x16 slots, this card is a reliable choice for enhancing your computing experience.
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MSI GeForce GT 1030 LP 4GB OC GDDR4 DirectX 12.0 Graphics Card PCI Express 3.0.
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NVIDIA Quadro K4000 Graphics Card 3GB GDDR5. Condition: Taken out of a WORKING PC that I am breaking for parts. CUDA Capability: 3.0. API: Shader Model 5.0, OpenGL 4.6, DirectX 11. Features & API Support.
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