Now once you take the existing one out, install the new GPU. After installing the GPU, connect the GPU connector with the PCIe slot. If your slots are not compatible with the GPU connectors, you can use an adapter to get compatibility. First of all, take out your PSU and unscrew its panel, then you will find several wires and drivers installed within your PSU, now you have to spot your motherboard, especially the PCIe slots (PCIe slots are those slots that connect your PSU to essential components) Typically, the power connectors demanded by the graphics card always come along with PSUs. However, in many cases, when the GPUs get developed too advanced than the PSUs, the manufacturers offer you power connectors and adapters to make the GPU compatible. Here's a much bigger/better picture of them taken from the computer hardware chart done by Sonic840 on Deviantart ( CC BY-SA)

EVGA - Products - EVGA PCIe 8pin (6+2) Cable (Single) - W001 EVGA - Products - EVGA PCIe 8pin (6+2) Cable (Single) - W001

The eight-pin GPU will convert the power source from the Molex pin and transmit them to GPU. 4-pin Molex to 8-Pin PCIe power adapter cables are precise for all PSUs integrating to mid-range and high-end GPUs. 3. 6-Pin To 8-Pin PCI-E Adapter Cable Any Standard motherboard of a CPU nowadays comes with a PCIe x16 connector. This connector mentioned above has 16 slots to offer power to GPUs. In the PCIe x16 connector, the maximum power supply you can expect is 75 watts. Using high-profile graphics cards like RTX 3080 can load the motherboard and consume more power. IF your power supply has only one 8 pin connector, the first thing you should do is to look at the label of the power supply and see how much current the psu can actually supply on 12v (doesn't matter how many adapters you have, if the power supply can only produce 250-300w on 12v) and second ask yourself if you trust the power supply to not lie about its capabilities on the label. If it's from a brand with decent reputation, chances are it's not lying. If it's some cheap model or some chinese psu that came with the case, most likely the psu is inflating the numbers. From your 6-pin, you will get 75 watts of power, and the 8-pin PCIe cable will draw another 150 watts additionally. Six pin- 8Pin adapter cables usually are for top-notch GPUs. Thus, if your PSU doesn’t have an 8-pin connector to support your high-ranking GPU, you can utilize a 6-pin to 8-pin PCIe adapter. 4. 2x 8-Pin To 12-Pin PCI-E Adapter Cable

Now slide the 8-pin GPU connectors to your six-pin PSU and abridge the remaining two pins, then finally connect the PSU and turn it on for a test run. 3. How Do I Connect My GPU To My Power Supply? Several CPUs come with multiple numbers of PCIe x16 slots. This enables users to harness more GPUs to the system. However, it eventually increases the power consumption of the whole system. The slots here represent lanes. The more you find the number of lanes, the faster the data transmission. In a PCIe x16, you can find data transmission at a rate of 16 bits per cycle; in the older PSUs, you would find Molex connectors. After Molex, the connectors were replaced with PATA and SATA along with time. 2. Can I Plug A 6-Pin Into An 8-Pin GPU? If you get a real high end card. using true 6+2 Y cable gives you all the power you need, else the card could throttle to low power mode.

Pin, 8-Pin, and GPU Power Connectors - Difference Between 6-Pin, 8-Pin, and

The graphics card that easily harnesses the power from a 6-pin connector is GTX 1060 and GTX 1650. These two graphics cards have a power requirement of 120 and 100 watts, respectively. In many cases, Graphics cards have two 6-pin connectors. Two six-pin connectors will offer 150 watts of power, and the PCIe x16 slot will offer another 75 watts. Thus, the total power they would get is 225 watts. What Is An 8-pin GPU Cable?There is also a rule of thumb that the PSU runs best when it’s at 50% capacity, but that is a different topic that should be looked at on a case-by-case basis. 12-Pin Connectors This adapter cable offers you compatibility from a 4-pin Molex pin to your 6-pin PCIe GPU power cable. When your desired graphics card requires a 6-Pin, and your PSU doesn’t have it, you can use a 4-pin Molex-6-pin GPU converter. Usually, older PSUs don’t have pin compatibility with new-age graphics cards. So, either you have to upgrade the PSU or use converters. 4-Pin Molex To 6-Pin PCI-E Adapter Cable SATA can also be adapted to an 8-pin power connector. In this scenario, there will be two SATA connectors for one 8-pin connector. Important Note About Adapters

Braided Cables - PSU - Braided extension adaptor - Scan Braided Cables - PSU - Braided extension adaptor - Scan

Some PSU maker could use a different pinout on the PSU, so even if the pinout is standard from the GPU side, it is not from the PSU side. It is common in traditional PSUs, and the modern-age PSUs employ PCIe connectors. If you have SATA connectors and want compatibility with your 6-pin GPU, you can use SATA to 6-Pin PCI-E Adapter Cable. This power adapter cable offers you compatibility with SATA connectors and draws more than 150 watts of power for your GPU. 6. SATA to 8-Pin PCI-E Adapter Cable SATA to 8-Pin PCI-E Adapter Cable That is why you could get a 8 pins connector with missing pins, because it is in fact wired as a 6 pins with lower power.Yes! You can connect a 6-pin GPU to an 8-pin connector. However, you must do it right. Any mistake can result in a fire hazard, and however, it is always wise to upgrade or switch the cables.

8-pin EPS12V and PCI-E connectors? Is there a difference between 8-pin EPS12V and PCI-E connectors?

SATA connectors to 8-Pin PCIe adapter cable offer you compatibility with your 8-Pin GPU power cable. Most of the older PSUs have 4-pin SATA connectors, and thus, for one 8-pin PCIe, you would require 2- Pin SATA connectors. This adapter will help you achieve connectivity and draw 225 watts of power supply for your GPU. A 4-pin to 6-pin connector helps you achieve compatibility with your GPU. Besides, the 4-pin Molex power connectors are the most standard connector type accessible today, and they were for all PATA and hard drives. The pin connectors usually have 4 Molex pins inside the adapter or converter cable. This converter cable connects with a 6-pin GPU to harness the external power supply. 2. 4-Pin Molex To 8-Pin PCI-E Power Adapter Cable Additionally, some pins are used to sense the power available (there are 2 ground pins that are sense A and B). When you plug in a 6-pin GPU with an 8-pin connector, it draws a lot of power, more power than it was meant to be! This will create a load on your PSU, and you may possibly witness a system failure along with erasing all the data. Thus, it is better to replace your PSU with an upgraded one. Final Words Although the math might not seem right when compared to the 6-pin connector, the 8-pin connector can deliver 150 watts to a graphics card. If the GPU requires more than 150 watts, it will come with an 8-pin connector or two 6-pin connectors.The wires can handle higher currents, up to 10-13A per wire, with reasonable heating (for example at 10A, the individual wires may heat from 25c ambient to 40c if spread out, maybe 50c in a bundle (ex under a sleeve wrapping the whole 8 wires) . They can do more if you don't mind bigger voltage drops and higher temperatures (the insulation is typically rated for at least 85c) The PCI-e limitation of 150 watts is chosen to allow 2 8 pin connectors on a single cable coming from power supply - keep in mind that there's ONE connector plugged into the power supply, usually with 3 or 4 pairs of 12v wires which are then shared between those 2 connectors. So, 2 x 150w max = 300w max, which is within the reasonably safety limits of the connectors on the power supply end (if the power supply is modular) You shouldn't be able to switch between them - the square and rounded off connectors are arranged such that you can't. Note the top left connector on the EPS 12V is squared off, while that on the PCIe is rounded off in the image before.Essentially differences like that are to prevent you from plugging in a PCIe connector into a EPS12V. There may be other differences, but I don't have these connectors on hand/