CORSAIR RM750e ATX 3.1 PCIe 5.1 Ready Fully Modular 750W Power Supply – 12V-2x6 Cable Included, Cybenetics Gold Efficiency, 105°C-Rated Capacitors, Modern Standby Mode – Black
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AI Verdict
This 750-watt, ATX 3.1, fully modular power supply with a 12V-2x6 cable and Cybenetics Gold efficiency is for builders needing modern GPU support on a budget.
This 750-watt power supply is a situational fit because it offers ATX 3.1 and PCIe 5.1 compliance with a 12V-2x6 cable, making it suitable for modern GPUs. However, user reports of fan noise and the 'standard++' Cybenetics noise rating mean it's not the quietest option available, despite its 120mm rifle bearing fan and Zero RPM mode.
If quiet operation is paramount, look for PSUs with a Cybenetics 'A' or 'A-' noise rating and a larger fan size, or consider higher-tier models from the same brand.
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Pros
- Includes a native 12V-2x6 GPU power cable for current and next-gen graphics cards.
- Complies with the ATX 3.1 power standard, supporting PCIe 5.1 with 2x transient power excursion tolerance.
- Features 105°C-rated industrial-grade capacitors for consistent electrical performance.
- Operates with Cybenetics Gold efficiency, reaching up to 90% efficiency.
- The 140mm-long casing allows for easier fit in most PC cases.
- Offers a 7-year warranty, providing extended coverage.
Cons
- Some users report the 120mm rifle bearing fan can be noisier than other Corsair RM series PSUs, particularly under load.
- Cybenetics noise rating is 'standard++', which is lower than the 'A' or 'A-' ratings of some other Corsair models.
- The 12V-2x6 cable requires two 8-pin PCIe connectors on the PSU side, potentially limiting other connections.
- Only includes 4 SATA connectors, which might be limiting for builds with many storage drives.
Dimension Scores
The PSU delivers 750 watts with Cybenetics Gold efficiency, reaching up to 90% efficiency, and is ATX 3.1 certified to handle 2x transient power excursions.
While it has a 120mm rifle bearing fan and Zero RPM mode, its Cybenetics noise rating is 'standard++', and some users report it being audibly louder than other RM series PSUs under load.
It uses industrial-grade, 105°C-rated capacitors and a robust resonant LLC topology with DC-DC conversion, backed by a 7-year warranty.
Being fully modular allows for connecting only necessary cables, and its compact 140mm length provides more space for routing.
Best For
- PC builds with modern NVIDIA 40-series GPUs needing a native 12V-2x6 connector.
- Systems requiring a compact 140mm ATX power supply for easier cable management.
- Budget-conscious builders seeking ATX 3.1 and PCIe 5.1 compliance without a premium price.
- Users who prioritize power efficiency with Cybenetics Gold certification.
Not Recommended For
- Users hypersensitive to fan noise, especially under higher loads.
- High-end builds where absolute silence is a primary concern.
- Systems with numerous SATA devices requiring more than four direct connections.
Watch Out For
- Some users experienced audible fan noise or coil whine, especially when the PSU approaches its maximum load, contrary to its 'low-noise' marketing.
- The 12V-2x6 cable uses two of the PSU's universal 8-pin connectors, which could be a problem if your build needs many other PCIe or CPU power cables.
- One user reported only having 2 SATA ports, which was insufficient for a NAS build, suggesting cable limitations for storage-heavy systems.
- The OEM (HEC) is viewed with less trust by some users compared to the OEM for the RMx series (CWT).
Full Specifications
| ASIN | B0FLFGGDK3 |
| Brand | Corsair |
| Color | Black |
| Series | RM750e |
| Wattage | 750 watts |
| Model Name | RM750e |
| Form Factor | ATX |
| Item Weight | 3.3 pounds |
| Manufacturer | Corsair |
| Connector Type | ATX |
| Cooling Method | Air |
| Output Wattage | 750 Watts |
| Item model number | CP-9020295-NA/AM |
| Compatible Devices | Monitor |
| Product Dimensions | 5.91 x 5.51 x 3.35 inches |
| Item Dimensions LxWxH | 5.91 x 5.51 x 3.35 inches |
| Item dimensions L x W x H | 5.91 x 5.51 x 3.35 inches |
What Buyers Say
The most surprising finding is the recurring user feedback about noise, with several people mentioning it can be louder than expected, especially compared to other Corsair RM series units, despite the Zero RPM fan mode. Many appreciate the inclusion of the 12V-2x6 cable and its ATX 3.1 compliance for modern GPUs. The fully modular design and compact size are frequently cited as benefits for easier building. However, the limited number of SATA connectors was a specific complaint for one user.
“Okay, so it's got the 12V-2x6 cable which is a must for my RTX 4070, and it was a decent price. But man, when I'm gaming, that fan really spins up and I can definitely hear it over my case fans. Wish it was quieter like my old RMx. Still, it works, and the cables are easy to manage.”
Common Praise
- Includes the 12V-2x6 cable for new GPUs, avoiding adapter use.
- Fully modular design makes cable management much cleaner.
- Compact 140mm casing fits easily in various PC cases.
- ATX 3.1 and PCIe 5.1 compliance provides future-proofing for power delivery.
- Fan stays off at low power consumption, leading to silent operation during light use.
Common Complaints
- Fan can be audibly loud or have coil whine under higher loads.
- Noise levels are rated 'standard++' by Cybenetics, not as quiet as some other Corsair models.
- The 12V-2x6 cable occupies two 8-pin connectors on the PSU, potentially limiting other cable options.
- Limited number of SATA power connectors (4 total) can be restrictive for storage-heavy builds.
Ownership Tips
- The fan often remains off during web browsing and light desktop use, contributing to a quiet experience.
- Cable flexibility is adequate for routing, but the flat ribbon style for some cables can be stiff.
- The 12V-2x6 cable's dual 8-pin connection on the PSU side needs to be accounted for in cable planning.
- The 7-year warranty provides a sense of long-term security, which is a plus for a core component.
Frequently Asked Questions
Does this PSU come with the new 12V-2x6 cable for RTX 40 series GPUs?
Yes, it includes a native 12V-2x6 GPU power cable, making it compatible with modern graphics cards like the NVIDIA GeForce RTX 40 Series.
Is this power supply fully modular?
Yes, the CORSAIR RM750e is a fully modular power supply, meaning you only connect the cables your system specifically needs.
How quiet is the fan on this PSU?
It features a 120mm rifle bearing fan with a Zero RPM Fan Mode for near-silent operation at lower loads. However, some users report it can become audible under higher loads, with a Cybenetics 'standard++' noise rating.
What is the warranty period for this power supply?
This power supply comes with a 7-year warranty.
Is this PSU compatible with ATX 3.1 and PCIe 5.1 standards?
Yes, it is Intel ATX 3.1 certified and PCIe 5.1 compliant, designed to handle 2x transient power excursions from the GPU.
Buying Guide
When you're looking at a power supply, you're basically picking the heart of your PC. You need enough wattage to power all your components, especially your graphics card and CPU. Efficiency ratings like Cybenetics Gold tell you how much power is wasted as heat, so higher efficiency means less heat and lower electricity bills. Modular cabling is a big deal for keeping your PC build clean and improving airflow, as you only plug in the cables you actually need. Finally, modern PSUs need to keep up with new GPU power demands, so look for ATX 3.1 and PCIe 5.1 compliance with a native 12V-2x6 connector if you're getting a newer graphics card.
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 move your system. A 750-watt PSU is suitable for most mid-range to high-end gaming PCs with a single powerful GPU.
ATX 3.1 & PCIe 5.1 Ready
These are the latest power standards for PCs. ATX 3.1 ensures the PSU can handle sudden power spikes from components like modern GPUs, preventing system crashes. PCIe 5.1 means it's designed to work with the newest graphics cards, often including a dedicated 12V-2x6 cable, so you don't need clunky adapters.
Fully Modular
This means every cable detaches from the power supply. Imagine building with LEGOs where you only use the bricks you need. It makes your PC build much cleaner, improves airflow inside your case, and simplifies troubleshooting or upgrades.
Cybenetics Gold Efficiency
This rating indicates how efficiently the PSU converts wall power into usable PC power. Gold means it's very efficient, wasting less energy as heat (around 10-13% loss). This saves you money on electricity and keeps your PC cooler, similar to how a fuel-efficient car uses less gas.
Alternatives
If you need quieter operation, look for PSUs with higher Cybenetics noise ratings (like 'A' or 'A-') or larger fan sizes. For more SATA connections, check the specific cable count in the product specifications.
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