Seasonic CORE GX-750-750W - 80+ Gold - ATX 3.0 & PCIe 5.0 Ready - Premium Capacitors - 7 Year Warranty - Nvidia RTX 40/50 & AMD GPU Compatible
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AI Verdict
This is a 750-watt, 80 PLUS Gold, fully modular ATX 3.0 power supply with a 12V-2x6 PCIe 5.0 cable, designed for current and future high-power GPUs.
This 750W 80 PLUS Gold power supply is a strong contender for builds needing ATX 3.0 and PCIe 5.0 compatibility, especially with its native 12V-2x6 cable. However, recurring user complaints about coil whine and fan noise, along with some reports of instability, make it a situational choice rather than a universally recommended one.
If quiet operation is a priority, look for power supplies with a Cybenetics A- or A+ noise rating, or consider models known for passive or semi-passive fan modes.
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Pros
- Includes a native 12V-2x6 (16-pin) cable for direct connection to PCIe 5.0 GPUs like RTX 40/50 series, supporting up to 600W of power delivery.
- Features a fully modular cabling design, allowing you to connect only necessary cables for cleaner builds and improved airflow.
- Achieves 80 PLUS Gold certification, providing 90% efficiency at 50% system load.
- Comes with a 7-year warranty, indicating manufacturer confidence in its durability.
- Maintains tight voltage regulation within ±3% for 12V, 5V, and 3.3V outputs.
- Compact 140mm depth allows for easier installation in smaller cases.
Cons
- Some users report noticeable coil whine, even at idle.
- Several users experienced fan noise issues, contradicting expectations for a Hydro Dynamic Bearing fan.
- A few reports mention random shutdowns, with users attributing them to the PSU.
- Some users perceive a decline in build quality compared to older Seasonic Focus series PSUs.
Dimension Scores
The 80 PLUS Gold certification means 90% efficiency at 50% load, and it provides a native 12V-2x6 PCIe 5.0 cable for up to 600W to modern GPUs.
Despite a Hydro Dynamic Bearing fan, multiple user reports indicate audible coil whine and fan noise, which is below average for a premium brand.
It features premium capacitors, tight voltage regulation within ±3%, and a 7-year warranty, though some users perceive a decline from older Seasonic models.
The fully modular design allows for optimal cable routing and reduced clutter, which is a top-tier feature for cable management.
Best For
- PC builds requiring a 750W power supply with a native 12V-2x6 connector for an RTX 40/50 series GPU.
- Compact system builds where a 140mm deep power supply is beneficial for space management.
- Users prioritizing a 7-year warranty and 80 PLUS Gold efficiency for a new build.
Not Recommended For
- Silence-focused builds where any level of coil whine or fan noise is unacceptable.
- Users who have experienced issues with previous Seasonic GX ATX 3.0 units and are wary of potential reliability concerns.
Watch Out For
- Expect potential coil whine, as multiple users have reported it, even when the system is idle.
- The 120mm Hydro Dynamic Bearing fan might not be as quiet as expected, with some users noting audible fan noise.
- There are isolated reports of random system shutdowns, which could indicate stability issues for some configurations.
Full Specifications
| ASIN | B0DPFCNKTC |
| Brand | Seasonic |
| Wattage | 750 watts |
| Model Name | CORE V2 GX-750 (ATX3) |
| Form Factor | ATX |
| Item Weight | 3.44 pounds |
| Manufacturer | SEASONIC |
| Connector Type | ATX |
| Cooling Method | Air |
| Output Wattage | 750 |
| Item model number | CORE V2 GX-750 (ATX3) |
| Product Dimensions | 5.5 x 5.9 x 3.4 inches |
| Item dimensions L x W x H | 5.5 x 5.9 x 3.4 inches |
What Buyers Say
The most surprising feedback on this Seasonic CORE GX-750 is the recurring mention of coil whine and fan noise, which is a letdown for a brand often associated with quiet operation. While it's praised for its ATX 3.0 and PCIe 5.0 readiness with the native 12V-2x6 cable, some users feel the quality isn't what they've come to expect from Seasonic, with reports of random shutdowns in some cases. The compact size and fully modular design are consistently appreciated, but the noise issues are a significant point of contention.
“Man, I really wanted to love this Seasonic, but the coil whine is driving me nuts, and the fan isn't as quiet as I hoped, even with the new GPU cable.”
Common Praise
- Includes the native 12V-2x6 cable for new GPUs.
- Fully modular cabling makes builds cleaner.
- Compact 140mm depth fits well in various cases.
- 7-year warranty provides long-term assurance.
Common Complaints
- Noticeable coil whine, even at idle.
- Fan noise is present and can be distracting for some users.
- Some users experienced random system shutdowns.
- Perceived decline in quality compared to older Seasonic PSUs.
Ownership Tips
- The native 12V-2x6 cable is stiff, requiring careful routing in smaller cases.
- Coil whine can sometimes be intermittent or dependent on system load, making it hard to diagnose immediately.
- The compact 140mm length is genuinely useful for case compatibility, but doesn't necessarily mean quieter operation.
- The fully modular cables are a blessing for initial build aesthetics, but don't prevent internal noise issues.
Frequently Asked Questions
Does this PSU come with the new 16-pin power cable for RTX 40 series graphics cards?
Yes, it includes a native 12V-2x6 (16-pin) PCIe 5.0 cable, which is designed for NVIDIA RTX 40/50 series and AMD GPUs, supporting up to 600W.
Is this power supply fully modular?
Yes, the Seasonic CORE GX-750 is fully modular, meaning you only connect the cables your system needs, which helps with cable management and airflow.
What is the warranty period for this power supply?
This power supply comes with a 7-year warranty.
Is the fan noisy on this unit?
While it features a 120mm Hydro Dynamic Bearing fan, some users have reported fan noise and coil whine, even at idle.
What are the dimensions of this power supply?
The power supply has a compact depth of 140mm, making it suitable for various case sizes.
Buying Guide
When you're picking a power supply, you're basically choosing the heart of your PC. It needs to deliver enough power for all your components, especially your graphics card, without breaking a sweat. You also want it to be efficient, so it doesn't waste electricity and generate too much heat, and ideally, quiet. Don't cheap out here; a bad PSU can take out your whole system.
Wattage (750 watts)
This is the total power your PSU can deliver. Think of it like the horsepower of a car; you need enough to get where you're going, plus a little extra for hills (or in this case, peak demands from your CPU and GPU). 750W is a solid amount for most mid-to-high-end gaming PCs, especially with modern GPUs.
80 PLUS Gold
This certification tells you how efficient the power supply is at converting AC power from your wall into DC power for your PC. Gold means it's at least 87-90% efficient, which means less wasted energy as heat and lower electricity bills. It's like getting better gas mileage for your computer.
ATX 3.0 & PCIe 5.0 Ready
This is crucial for newer graphics cards. ATX 3.0 is a new standard that handles power spikes better, and PCIe 5.0 means it has the dedicated 16-pin (12V-2x6) cable needed for cards like the RTX 40 series. Without this, you'd need adapters, which can be messy and less reliable. It's like having the right plug for a new appliance.
Fully Modular
This refers to the cables. Fully modular means you can detach every single cable that isn't needed. This makes building your PC much easier and keeps the inside of your case tidy, improving airflow. It's like having custom-length cables instead of a tangled mess.
Alternatives
If this unit's noise concerns you, look for PSUs with higher Cybenetics noise ratings or those explicitly marketed for silent operation, often with larger or semi-passive fans. If you need more power, search for higher wattage units (e.g., 850W or 1000W) that still maintain ATX 3.0 and PCIe 5.0 compliance.
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