How do I know if an RX 9060 XT will fit my PC, and can I install it myself?

Intel HD Graphics 630 is integrated into the processor, so you aren't necessarily replacing an existing card. You'd be adding one to a long PCIe slot on the motherboard.

Check three things before ordering: whether that slot is available, whether the exact card will fit in the case, and whether the power supply has enough capacity and the right PCIe power connectors. Card dimensions and connector requirements vary by model, so look up the specific version you're considering. Measure the space inside the case, including room for the power cable.

The power supply is the part I'd investigate first. A refurbished office PC may have a low-wattage supply or no suitable PCIe power cable, even if the card fits. Check the label on the supply and compare it with the requirements for the exact card.

Don't assume the supply can be swapped easily either. Some prebuilts use unusual power supplies or motherboard connectors. The PC's model number can help you check that before spending money.

Installing the card itself is usually manageable for a beginner. Shut down the PC, switch off and unplug the power supply, then open the case. Remove the appropriate slot covers, line the card up with the PCIe slot and press it in until the latch engages. Secure it to the case and connect the required PCIe power cable.

After closing the case, connect the monitor to the new card rather than the motherboard, then install the AMD graphics driver. A video showing a similar case and card can make the process clearer. If the slot, cable or power supply situation is confusing, getting a shop to check it before buying is reasonable.

There's also the value question. A PC with HD 630 may have an older processor, which can limit how much benefit you get from a newer graphics card in some games. That doesn't make the card incompatible, but it could affect whether the upgrade is worth the price.

If you're also considering a CPU and SSD upgrade, price out the whole plan against another PC. A newer CPU may need a different motherboard and possibly different memory, so it isn't always a cheap drop-in upgrade.