The CPU Power cable connects your computer's power supply unit (PSU) to the motherboard to deliver power to the CPU. The type of cable you need depends on your motherboard and PSU specifications. Here are the common types:
1. 4-pin ATX12V (P4) Connector
Use: Older motherboards and some low-power CPUs.
Appearance: A single 4-pin connector (often labeled "P4" or "CPU1").
Compatibility: Used with motherboards that have a 4-pin CPU power socket (common in older systems or budget builds).
2. 8-pin EPS12V Connector (also called ATX12V 2.x)
Use: Modern motherboards and high-performance CPUs (e.g., Intel Core i7/i9, AMD Ryzen 7/9).
Appearance: A single 8-pin connector (often labeled "EPS" or "CPU_PWR").
Compatibility: Required for most high-end CPUs and motherboards. Some motherboards may split this into two 4-pin connectors (4+4-pin).
3. 4+4-pin EPS12V Connector (Split Design)
Use: Provides flexibility for both 4-pin and 8-pin motherboards.
Appearance: Two 4-pin connectors that can be combined into an 8-pin connector.
Compatibility: Works with both 4-pin and 8-pin motherboards. Common in modern PSUs.
4. 12-pin CPU Power Connector (Rare)
Use: Some high-end or proprietary motherboards (e.g., certain server or workstation boards).
Appearance: A 12-pin connector (less common).
Compatibility: Check your motherboard/PSU manual if you encounter this.
Key Points:
Check your motherboard manual: It will specify whether you need a 4-pin, 8-pin, or 4+4-pin connector.
Check your PSU: Modern PSUs usually come with a 4+4-pin cable, which is versatile.
Don’t force connectors: Ensure the cable matches the socket on the motherboard to avoid damage.
High-end CPUs: Almost always require an 8-pin connector (or 4+4-pin combined).
Example Setup:
If you have an Intel Core i9 or AMD Ryzen 9, you’ll likely need an 8-pin EPS12V connector.
If you have an older or budget CPU/motherboard, a 4-pin connector may suffice.
Pro Tip:
If your PSU doesn’t have enough CPU power connectors, consider upgrading the PSU or using a splitter cable (if supported by your motherboard and PSU). However, splitters are not recommended for high-power CPUs. Always refer to your motherboard and PSU documentation for exact requirements.
