MSI GeForce RTX 5070 Gaming Trio OC Review – Quieter and a little more colorful is always possible

1 - Introduction and unboxing 2 - Test system and equipment 3 - Teardown: PCB and cooler 4 - Material analysis and thermal interface material 5 - Gaming performance rasterization 6 - Gaming performance Super Sampling, RT & FG 7 - Power consumption, transients and PSU recommendation 8 - Temperatures, clock rate and thermography 9 - Fans speed and noise 10 - Summary and conclusion

Total power consumption and compliance with standards in practice

The power consumption in idle mode of around 14 to 17 watts shows that NVIDIA could also further optimize the drivers here. Under load, the measured values are within the expected range. In some demanding games, the maximum power consumption reaches up to 265 watts and is then even slightly above the TDP limit. The use of DLSS, especially in combination with multi-frame generation (MFG), also helps to reduce energy consumption. The targeted reduction of the render load using AI-supported technologies noticeably reduces the load on the GPU without significantly affecting the image quality.

The mainboard slot, also known as the PCIe slot (PEG: PCI Express Graphics), is designed for a maximum current of 5.5 amps at a voltage of 12 volts in accordance with the PCI-SIG standard. This corresponds to a maximum power consumption of 66 watts, which can be supplied directly via the slot. The PCI-SIG standard serves as the basis for ensuring a uniform and reliable power supply via the mainboard slot while maintaining system stability. The specified limit value of 5.5 amps also takes into account short-term peak loads that can occur during abrupt load changes. However, these load peaks must not overload the system or affect other components due to voltage fluctuations.

The graphics card in question, which does not push the limits of the power supply even when using the modern 12V2X6 power connector design, demonstrates particularly efficient load distribution. The PEG slot is only loaded with a maximum of 0.6 amps, which corresponds to far less than 10 watts. This minimal load on the mainboard slot underlines the efficiency of the card and significantly reduces potential thermal loads or damage to the mainboard. The card therefore not only contributes to system stability, but also demonstrates well thought-out energy management that optimally distributes the load between different power sources.

Detailed view of gaming in Ultra HD

In Cyberpunk 2077, the graphics card reaches peak values of up to 268 watts in UHD and maximum settings. This high load is caused by the immense computing requirements without AI-supported scaling and requires a stable power supply. Although the 12V2X6 design is not fully utilized, it still places high demands on power supply stability. The power consumption and current levels are measured at 20 ms intervals in order to capture even rapid load changes.

The first graph shows the real-time consumption as a product of current and voltage, which allows conclusions to be drawn about peak values and compliance with the PCIe specifications. The second graph focuses on the current distribution between the PEG slot and external connections such as 12V2X6. It provides information on how heavily the mainboard slot is used and in which situations external connections have to supply more power.

The combination of both analyses provides a comprehensive view of the graphics card’s energy flows. While the power consumption evaluates the overall efficiency, the power distribution shows possible load peaks. This data is essential for developers and enthusiasts to precisely understand the power management of the card.

The next graphs analyze a single 20 ms interval with a resolution of 10 µs and show in detail the behavior of the power supply during short-term load changes. These are caused by sudden GPU requirements, such as render spikes or frame changes. The first graph visualizes the power consumption in this extremely short period of time and reveals short-term peaks of up to 500 watts, which place high demands on the stability and response speed of the power supply unit.

The second graph shows the current flow through the supply cables and reveals abrupt changes under dynamic loads. These measurements illustrate the importance of the ATX 3.1 standard, which requires a power reserve of 200% for short load peaks. As modern GPUs place extremely high demands in peak load situations, a sufficient power supply reserve is crucial in order to avoid voltage dips and ensure system stability.

Load behavior in the Torture Test

Furmark is an extreme load test for graphics cards that generates an atypically constant maximum load, far above what occurs in real applications or games. Through intensive calculations, both the shader and memory controllers are fully utilized, which leads to extreme thermal and electrical stress. This worst-case test checks the stability of the GPU and the power supply, whereby the power consumption can also significantly exceed the specified TDP of 250 watts and reach peak values of up to 302 watts.

As Furmark generates a permanent maximum load, the test is not representative for everyday use, but it is extremely useful for uncovering weak points in the cooling or power supply. Furmark therefore serves as a stress test to ensure that the entire system remains stable even under extreme conditions.

The high-resolution measurements during a Furmark test provide precise insights into the behavior of the power supply and power consumption under extreme load. The continuous maximum load on the GPU results in constant thermal and electrical stress, which is analyzed at microsecond intervals. Particularly noticeable are short-term load peaks that far exceed the average power consumption and are caused by sudden changes in the load of individual GPU components.

These measurements are particularly relevant with regard to the ATX 3.1 standard, which requires power supply units to compensate for short-term peaks of up to 200% of the nominal load for up to 1 millisecond. The data shows that such peaks are not only theoretically possible, but actually occur and can severely stress the limits of power supply designs.

Summary of the load peaks and a power supply recommendation

A power supply unit with a rated output of at least 550 to preferably 650 watts, which meets the requirements of the ATX 3.1 standard, is a suitable choice to reliably cover the power consumption values and load scenarios described. The maximum peak loads of the graphics card, which can reach up to almost 270 watts in extreme situations such as Furmark or very demanding games, make a high power reserve necessary. Together with the load of the rest of the system, such as the CPU, RAM and other components, this results in a requirement that can be up to around 600 to 650 watts in very short peak times.

A 650 watt power supply unit not only offers sufficient headroom, but also absorbs short-term load peaks, as required by the ATX 3.1 standard with up to 200% of the nominal load for one millisecond. This means that peaks of up to 1300 watts can be handled without stability problems. The dimensioning also ensures that the power supply operates in an efficient load range between 50 and 70 %, which optimizes energy efficiency and longevity. An 80 PLUS Platinum or Titanium certification also ensures low heat generation and high efficiency. Thanks to support for modern standards such as 12V2X6, the power supply is future-proof and offers long-term stability for upcoming high-performance graphics cards and hardware upgrades.