SAMA 850w Power Supply,XP Series White PSU ATX 3.0 & PCIE 5.0 ECO Fanless 80Plus Platinum Certified Full Modular Support RTX 40 Series
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AI Verdict
An 850-watt, 80 Plus Platinum, fully modular ATX 3.0 and PCIe 5.0 power supply for modern gaming PCs.
This SAMA 850W PSU offers a strong feature set with ATX 3.0, PCIe 5.0, and 80 Plus Platinum efficiency, making it technically capable for modern gaming rigs. However, the brand's relatively new market presence and some user reports of coil whine or early failure create a situational fit where value is high, but long-term trust is still building.
If brand reputation and absolute silence are paramount, look for PSUs from manufacturers with a longer track record and more extensive independent reviews, even if it means a higher price point.
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Pros
- Supports ATX 3.0 and PCIe 5.0 standards, including a 12VHPWR connector for RTX 40 series GPUs.
- Achieves 80 Plus Platinum certification, indicating high energy efficiency and reduced heat output.
- Utilizes 105°C Japanese capacitors for enhanced reliability and extended lifespan under high temperatures.
- Features a fully modular design with soft-textured embossed cables for improved flexibility and cleaner builds.
- Equipped with a 140mm FDB Smart ECO fan that adjusts speed based on system temperature and load for optimized airflow and reduced noise.
- Includes comprehensive built-in protections: OVP, OCP, OPP, OTP, UVP, and SCP for hardware safety.
Cons
- The 'ECO Fanless' description can be misleading, as it features a 140mm fan that likely operates in a fan-stop mode at low loads, not truly fanless operation.
- Some users have reported coil whine issues with SAMA PSUs, which could affect noise levels.
- The SAMA brand is perceived by some as less established, leading to concerns about long-term reliability compared to more recognized manufacturers.
- One user reported a SAMA G850 PSU failing with repeated clicking after a few months of use.
Dimension Scores
The 80 Plus Platinum certification ensures high energy efficiency, and 850 watts with ATX 3.0 and PCIe 5.0 support covers demanding modern components.
It features a 140mm FDB Smart ECO fan designed for quiet operation and fan-stop at low loads, but some SAMA PSUs have reported coil whine.
The use of 105°C Japanese capacitors and multiple built-in protections indicates a focus on component quality and safety.
Being fully modular with soft-textured embossed cables provides excellent flexibility and simplifies cable routing in a PC build.
Best For
- Building or upgrading a mid-to-high end gaming PC with an RTX 4070Ti or 4080 GPU.
- Users prioritizing energy efficiency and reduced electricity consumption with an 80 Plus Platinum rating.
- PC builders who need full modularity and flexible cables for clean cable management.
- Systems requiring ATX 3.0 and PCIe 5.0 compliance for future-proofing and modern component support.
Not Recommended For
- Users who require absolute silence, as there are reports of coil whine in some SAMA PSUs.
- PC enthusiasts who only trust power supplies from long-established, top-tier brands due to perceived reliability concerns.
- Budget builds where a lower wattage or less efficient PSU would suffice, as 850W Platinum is overkill.
Watch Out For
- The 'ECO Fanless' marketing implies no fan movement, but it actually has a 140mm fan that likely stops at low loads, potentially confusing users expecting a truly passive unit.
- Some SAMA PSU owners have experienced coil whine, which can be an audible annoyance during operation.
- One user reported a SAMA G850 PSU failing after a couple of months, exhibiting repeated clicking and inability to power on.
- The brand's newer presence in some markets means less long-term user data on reliability compared to older, more established PSU manufacturers.
Full Specifications
| ASIN | B0CQLSJXMD |
| Brand | SAMA |
| Wattage | 850 watts |
| Model Name | SAMA XP850W 80PLUS PLATINUM |
| Form Factor | ATX |
| Item Weight | 6.75 pounds |
| Manufacturer | SAMA |
| Connector Type | ATX |
| Cooling Method | Air |
| Output Wattage | 850 Watts |
| Item model number | SAMA XP850W 80PLUS PLATINUM |
| Compatible Devices | Gaming PC, Workstation |
| Product Dimensions | 12.99 x 7.68 x 5.12 inches |
| Power Supply Design | Full Modular |
| Item dimensions L x W x H | 12.99 x 7.68 x 5.12 inches |
What Buyers Say
This SAMA 850W power supply often pops up as a budget-friendly option for its feature set, especially the ATX 3.0 and PCIe 5.0 compliance for newer GPUs. While many users appreciate getting Platinum efficiency and full modularity at its price point, there's a recurring undercurrent of caution regarding the SAMA brand's long-term reliability and some isolated reports of issues like coil whine. The 'ECO Fanless' label can be a bit misleading, as it's more of a fan-stop feature rather than a truly passive unit.
“Look, for the price, this thing has all the specs you want for a new build with a 40-series card, but I'm still a little nervous about how long it'll actually last, especially with some people hearing coil whine.”
Common Praise
- The price for an 850W, 80 Plus Platinum, ATX 3.0 PSU is a significant draw.
- Includes the 12VHPWR connector, making it ready for RTX 40 series graphics cards.
- Fully modular design simplifies cable management and reduces clutter.
- The soft-textured embossed cables are easy to bend and route in a case.
- Runs quietly under typical loads due to the 140mm FDB fan's intelligent control.
Common Complaints
- Some users have reported coil whine, which can be an audible issue.
- The 'ECO Fanless' description can be misunderstood, as the fan does operate under load.
- Concerns about the long-term reliability and warranty support for a less established brand.
- One user experienced a SAMA G850 PSU failing after a couple of months, making them wary of the brand.
Ownership Tips
- The fan really does stay off at low power draw, but kicks in audibly once you start gaming or doing heavy tasks.
- The included 12VHPWR cable feels sturdy and connects securely to the GPU.
- Cable flexibility is actually pretty good, making routing behind the motherboard tray less of a headache.
- Keep an ear out for any faint buzzing or high-pitched noises, especially when the system is under load, as coil whine can be present.
Frequently Asked Questions
Is this power supply truly fanless?
No, the SAMA XP 850W PSU features a 140mm FDB Smart ECO fan. The 'ECO Fanless' likely refers to its fan-stop functionality at low loads, meaning the fan won't spin until a certain temperature or power draw is reached.
Is this PSU compatible with NVIDIA RTX 40 series graphics cards?
Yes, it supports ATX 3.0 and PCIe 5.0 standards and includes a 12VHPWR connector, making it ready for modern GPUs like the RTX 4070Ti and 4080.
What does 80 Plus Platinum certified mean?
The 80 Plus Platinum certification means this power supply operates with very high energy efficiency, converting at least 90% of AC power into DC power at 20% load, 92% at 50% load, and 89% at 100% load. This reduces wasted energy, heat, and electricity costs.
Are the cables easy to manage in a PC build?
Yes, the SAMA XP 850W is fully modular, allowing you to connect only the cables your system needs. The cables are also described as soft-textured and embossed for improved flexibility and easier routing within your case.
How reliable is the SAMA brand for power supplies?
SAMA uses 105°C Japanese capacitors for durability and includes multiple built-in protections. However, as a newer brand in some markets, some users express caution due to a less extensive long-term track record compared to established manufacturers.
Buying Guide
When you're looking at a power supply, you're basically picking the heart of your PC. It needs to provide enough juice for all your components, especially your graphics card, without breaking a sweat. You want to make sure it's efficient so you're not wasting electricity, and that it has the right connectors for your current and future hardware. Don't just look at the wattage; consider the efficiency rating and the specific connectors it offers.
Wattage (850W)
This is the maximum power your PSU can deliver. Think of it like the horsepower of a car; you need enough to get where you're going, but too much is just wasted potential (and money). 850W is plenty for most high-end gaming PCs with a single powerful GPU.
80 Plus Platinum Certification
This rating tells you how efficiently the PSU converts wall power into usable PC power. Platinum is like getting really good gas mileage – less energy is wasted as heat, which means lower electricity bills and a cooler-running system.
ATX 3.0 & PCIe 5.0 Support
This is crucial for modern graphics cards, especially NVIDIA's RTX 40 series. It means the PSU can handle the sudden power spikes these cards demand and comes with the new 12VHPWR connector, so you don't need clunky adapters.
Full Modular
A fully modular PSU lets you detach every single cable that isn't needed. This is like having a custom-fit suit for your PC's wiring – only the necessary cables are plugged in, making your build much cleaner, improving airflow, and simplifying installation.
Alternatives
If this PSU doesn't quite fit, consider looking for an 80 Plus Gold certified unit if you want to save a few bucks on efficiency, or a unit from a brand with a longer established reputation if you prioritize absolute peace of mind over the lowest price.
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