The EVGA SuperNOVA 850 G7 delivers high performance in a compact form factor, according to Tom's Hardware and Hardware Busters reviews. It offers excellent efficiency and build quality while maintaining reliable operation under load. However, it lacks PCIe 5.0 support and suffers from high inrush currents. This PSU is ideal for gamers seeking a powerful yet space-saving solution, though those requiring latest-generation PCIe connectors may need to look elsewhere.
Full review
Performance and Efficiency
Cybenetics tested the EVGA SuperNOVA 850 G7 and found it delivered 90.073% average efficiency at 115V and 92.222% at 230V, which represents a strong performance for a PSU in this class. Tom's Hardware confirmed the unit's ability to maintain full power at 47 degrees Celsius, demonstrating its thermal management capabilities under load. The PSU's efficiency under light loads was also notable, achieving 68.510% at 10W or 2% load, which indicates good performance across the entire load spectrum.
The G7's efficiency ratings were particularly impressive when compared to its competitors. According to Hardware Busters, the unit outperforms the Corsair RM850x in terms of efficiency and noise output at average speeds. The 850W model's ability to maintain high efficiency even under full load makes it a solid choice for demanding builds. The 12V rail achieved 0.76% load regulation at full load, which is considered tight for a PSU of this power class. Additionally, the 5V rail maintained 0.49% load regulation, showing consistent performance across all rails.
However, some reviewers noted that the PSU's power factor was not optimal, especially with 230V input where it only achieved 0.951 average PF, compared to the 0.990 at 115V. This suggests that while the unit performs well in most scenarios, there's room for improvement in its power factor correction at higher voltage inputs. The 12V ripple was measured at 18.29mV at full load, which is within acceptable limits but not exceptional, particularly when compared to some premium units that achieve under 10mV ripple.
Build Quality and Design
The EVGA SuperNOVA 850 G7's compact design is one of its most distinctive features, measuring just 150 x 85 x 130mm, which is more akin to an SFX-L unit than a standard ATX PSU. Hardware Busters noted that despite the small dimensions, FSP managed to include LED load indicators, though they positioned them on the side of the PSU, making them less accessible. The unit's PCB is double-sided, which is typical for high-density designs, but the part analysis revealed some inconsistent component sourcing, including a mix of Chemi-Con and TK bulk capacitors that may affect long-term reliability.
Tom's Hardware praised the build quality and noted that FSP's platform was excellent for a unit of this size, with the use of high-quality components like Infineon IPP60R120P7 MOSFETs and Champion CM6901T2X resonant controller. The PSU features a 120mm fluid dynamic bearing fan from Protechnic Electric, which provides good airflow while maintaining relatively low noise levels. The fully modular design includes 2x EPS, 6x PCIe 6+2 pin cables, 9 SATA, 4x 4-pin Molex, and 1x FDD adapter, making it compatible with a wide range of systems. However, the lack of PCIe 5.0 connectors is a notable omission for future-proofing.
The PSU's protection features include OCP (Over Current Protection) and OPP (Over Power Protection) settings that were noted as being set quite high, particularly at 101.2A for 12V rail at 31°C and 98.2A at 46°C. While this may provide robust protection, it also means that the protection mechanisms are less sensitive to actual overloads, potentially rendering them less effective in real-world scenarios where precise protection is needed. The unit also includes MOV, NTC thermistor, and bypass relay for inrush current protection, which is a good addition for preventing power spikes.
What Reviewers Loved
Reviewers consistently praised the EVGA SuperNOVA 850 G7's performance and reliability, particularly in comparison to the Corsair RM850x, which it outperforms in efficiency and noise output. Hardware Busters highlighted that the G7 line represents the best EVGA 850W G series model released so far, surpassing even the previous G6 model that was considered good but inferior to the RM850x. The 10-year warranty was also noted as a strong selling point, indicating EVGA's confidence in the product's longevity.
The unit's compact size and high power density were major positives, with Tom's Hardware emphasizing that it offers 'top-performance' despite its small footprint. The fully modular design was appreciated for its cable management capabilities, and the inclusion of multiple PCIe and SATA connectors ensures compatibility with various system configurations. The PSU's ability to maintain full power at 47 degrees Celsius was also noted as a significant advantage, particularly for users building in compact cases where thermal management is crucial.
Cybenetics confirmed the unit's quiet operation, with average noise levels of 31.50dBA at 230V and 32.40dBA at 115V, which is considered standard for high-efficiency PSUs. The use of high-quality components such as Infineon MOSFETs and Rubycon electrolytic capacitors was also appreciated. The PSU's ability to handle high loads without significant degradation in performance was highlighted by multiple reviewers, making it suitable for demanding gaming and workstation builds.
Where It Falls Short
Despite its many strengths, the EVGA SuperNOVA 850 G7 has several notable shortcomings. The most significant criticism comes from its overly high OCP and OPP settings, which are set too high to be truly effective for protecting against actual overloads. As noted by Hardware Busters, these settings are 'set too high' and 'practically render them useless' for protecting against real-world overloads, potentially compromising safety. The PSU's inrush current was also problematic, reaching 65.150A at 115V and 85.990A at 230V, which is significantly higher than average and could pose risks during startup.
Another major drawback is the lack of PCIe 5.0 connectors, which makes the unit incompatible with the latest generation of graphics cards and CPUs that require these connections. The unit's power factor correction is also subpar, particularly at 230V input where it only achieves 0.951 average PF, which is below what users might expect from a high-end PSU. Additionally, the PSU's 12V load regulation of 0.77% at 230V and 0.76% at 115V, while acceptable, could be tighter for premium applications.
The unit's design also presents some challenges. The LED load indicators are positioned on the side of the PSU, making them less accessible, and the compact design makes disassembly difficult. The use of mixed capacitor brands, including some lower-quality TK capacitors, raises concerns about long-term reliability. Furthermore, the PSU's 12V ripple of 18.29mV at full load, while within acceptable limits, is not exceptional compared to premium units that achieve under 10mV ripple, indicating that the unit may not meet the expectations of users seeking the highest levels of performance.
Who It's Best For
The EVGA SuperNOVA 850 G7 is best suited for users who prioritize compact builds and high performance within a limited space. It's ideal for those building in small form factor cases, such as the Fractal Torrent, or for users who want a high-efficiency PSU without the bulk of traditional ATX units. Gamers and workstation builders who need reliable power delivery and don't require PCIe 5.0 connectors will find this unit particularly appealing. The 10-year warranty also makes it attractive for users who want long-term reliability.
This PSU is not recommended for users who require PCIe 5.0 connectivity, as it lacks these connectors entirely. It's also not ideal for users who need extremely tight ripple suppression or who are building with very high-end components that demand the absolute best in power delivery. Those who prioritize power factor correction and want to minimize energy waste may also find the unit's performance lacking, especially at 230V input where it only achieves 0.951 average PF.
The G7 is particularly well-suited for users building AMD systems with high-end CPUs and GPUs that don't require PCIe 5.0, such as the Ryzen 7800X3D and RX 7900XT. It's also a good choice for users who want to build in compact cases like the Fractal Torrent, where space is at a premium. However, users who are planning for future upgrades or who require the absolute best in power delivery for overclocking or high-end gaming should consider alternative options with better specifications.
How It Compares to Alternatives
When compared to the Corsair RM850x, the EVGA SuperNOVA 850 G7 outperforms it in efficiency and noise output at average speeds, according to Hardware Busters. The RM850x is still considered among the best PSUs available, but the G7 provides a compelling alternative for users who value compactness and performance. The G7 also outperforms the previous G6 model, which was considered good but inferior to the RM850x. However, the G7 falls short of the Corsair RM850x in terms of PCIe 5.0 connectivity and some of the more advanced features found in premium units.
Compared to other PSUs in its class, the EVGA SuperNOVA 850 G7 stands out for its compact design and high efficiency ratings. While it may not match the absolute best in terms of ripple suppression or power factor correction, its overall performance and reliability make it a strong contender. The unit's 10-year warranty is also a significant advantage over many competitors, though it's worth noting that the PSU's protection features are set too high, which could be a concern for some users.
In terms of value, the G7 offers good performance for its price point, especially considering its compact size and high efficiency. However, users who need PCIe 5.0 connectors or who require the absolute best in power delivery may find better alternatives in more expensive units. The G7's performance is solid but not exceptional, particularly when compared to premium PSUs that offer tighter ripple suppression and better power factor correction.
Long-Term Durability
The EVGA SuperNOVA 850 G7 comes with a 10-year warranty, which is a strong indicator of EVGA's confidence in the product's longevity. However, the mixed capacitor brands used in the unit, including some lower-quality TK capacitors, raise concerns about long-term reliability. Hardware Busters noted that while most components are of high quality, the soldering quality in some areas could be better, and the inconsistent capacitor sourcing may affect performance over time.
Cybenetics' testing showed that the unit maintained good performance across various load conditions, with tight load regulation and low ripple. The PSU's ability to maintain full power at 47 degrees Celsius demonstrates its thermal management capabilities, which is crucial for long-term reliability. The use of high-quality components such as Infineon MOSFETs and Rubycon electrolytic capacitors suggests that the unit should perform well over time, provided that the less reliable capacitor brands don't cause issues.
The PSU's protection features, while not perfect, are sufficient to prevent most common power-related issues. The MOV, NTC thermistor, and bypass relay combination provides good inrush current protection, which is essential for preventing damage during startup. However, the overly high OCP and OPP settings may be a concern for users who want precise protection mechanisms. Overall, while the unit is expected to be reliable for its intended use, the mixed component quality may affect long-term performance.
Value at This Price
At $179.99, the EVGA SuperNOVA 850 G7 offers good value for users who need a compact, high-performance PSU. The unit's efficiency ratings, compact design, and 10-year warranty make it an attractive option for those building in small form factor cases or who want a reliable PSU without the bulk. The fact that it outperforms the Corsair RM850x in efficiency and noise output at average speeds makes it a compelling choice for users who don't require PCIe 5.0 connectivity.
However, the unit's shortcomings, particularly the overly high OCP and OPP settings and lack of PCIe 5.0 connectors, may make it less appealing to users who want the absolute best in performance or who are planning for future upgrades. The mixed capacitor brands also raise concerns about long-term reliability, which could affect the unit's value proposition over time. For users who prioritize compactness and reliability over cutting-edge features, the G7 is a solid choice, but those seeking premium performance may need to consider more expensive alternatives.
The PSU's value is also affected by its limited connectivity options. While it includes 2x EPS and 6x PCIe connectors, the absence of PCIe 5.0 connectors means it won't be compatible with the latest generation of graphics cards and CPUs. This limitation may require users to upgrade to a different PSU in the future, reducing the unit's overall value. Despite these drawbacks, the G7's performance and reliability make it a good choice for users who don't require PCIe 5.0 and are building in compact cases.
Strengths
- +Full power at 47 degrees Celsius
- +Top overall performance
- +Good build quality
- +Efficient enough 5VSB rail
- +Tight load regulation
Watch-outs
- −No PCIe 5.0 connectors
- −High inrush currents
Who this is for
Why you’d buy the EVGA SuperNOVA 850 G7
- Full power at 47 degrees Celsius.
- Top overall performance.
- Good build quality.
Why you’d skip it
- No PCIe 5.0 connectors.
- High inrush currents.
Rating sources
“The G7 outperformed its competitors, including the Corsair RM850x, in terms of efficiency and noise output at average speeds.”
“the EVGA super Supernova 850 G7 is an absolute gem for anyone looking to power up the PC with efficiency reliability and a touch of elegance”
Our 4.4 score is the average of these published ratings. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.
