MSI GeForce RTX 5090 32GB SUPRIM SOC Review: Power Efficiency, Cooling, and Gaming Performance

Delivering unmatched thermal efficiency and whisper quiet performance under extreme loads, this flagship GPU redefines high end gaming expectations

Hardware by Nakiro on Jul 06, 2025

The latest flagship from MSI, GeForce RTX 5090 Suprim OC, stands out as one of the most extravagant partner cards ever released. With its oversized cooler, extensive heat pipe array, and hefty weight, it dwarfs even the already substantial RTX 4090 Suprim.

Every aspect of this card—from its dimensions and materials to its cooling solution and power delivery—is designed to handle extreme workloads quietly and efficiently.

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The MSI RTX 5090 Suprim OC is a true behemoth in the graphics card world. With its oversized cooler, extensive heat pipe array, and hefty weight, it dwarfs even the already substantial RTX 4090 Suprim.

Every aspect of this card—from its dimensions and materials to its cooling solution and power delivery—is designed to handle extreme workloads quietly and efficiently. Below, we explore what you need to know if you're considering this premium offering.

Dimensional Dominance

Measuring a colossal 359 mm in length, the Suprim OC is 5% longer than its predecessor, the RTX 4090 Suprim. From the PCIe connector to its highest point, it stands 150 mm tall and spans an unprecedented 76 mm in thickness, consuming at least four expansion slots in your case.

This sheer size puts an immense load on the PCIe slot, and at 2,836 g, it is far heavier than most graphics cards. We were struck by how imposing it looks in any build, and you will want to ensure your case offers robust support or plan to add a sturdy GPU bracket.

GPU Stand: A Missed Opportunity

To counter its weight, MSI includes a basic plastic GPU stand, but we found this underwhelming, given the card's premium positioning. It feels more suited to a mid range model rather than one commanding well above $2,000 US.

If your case lacks built-in reinforcement, you may want to replace the included stand with a higher-quality aluminum bracket to protect your motherboard from sagging over time.

Premium Aesthetics and Build Quality

On the front side, the Suprim OC's shroud combines grey plastic with brushed aluminum accents to achieve a classy yet aggressive aesthetic. Three large 105 mm brushless fans, manufactured by Power Logic, ensure ample airflow, while discreet LED light bars add subtle flair without overwhelming RGB gaudiness.

Flipping the card reveals a massive aluminium backplate covering most of the PCB, interrupted only by a large air pass through vent near the outputs. The minimalist design showcases only the mandatory GeForce RTX branding, lending a clean and refined look.

My only gripe is that the brushed aluminium surfaces easily trap oils from fingertips, making the backplate appear smudged almost immediately after handling. Unless you install the card-wearing gloves, expect fingerprints to accumulate quickly, marring the otherwise pristine finish.

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Cooling Solution: Vapor Chamber and Heat Pipes

Under the shroud lies one of the largest coolers we have ever seen. The cooler alone weighs 2,366 g, accounting for over 80% of the card's total mass. At its heart is a 7 mm thick copper vapour chamber that makes direct contact with the GPU die and every GDDR7 memory chip.

From there, heat flows into eleven copper heat pipes—three 8 mm pipes and eight 6 mm pipes—soldered to an extensive aluminum fin array.

We were impressed by MSI's use of a square pipe design to maximise contact area, which should translate into exceptional heat transfer.

Thermal pads bridge VRM components to dedicated heat spreaders, and thermal pads on the PCB's reverse side couple the board to the aluminium backplate, providing additional heat dissipation.

Overall, this cooler feels industrial grade and promises to keep temperatures in check even under extreme loads.

Thermal and Acoustic Performance

In Silent BIOS mode, with the card installed inside an ATX case in a room at 21°C and the doors closed, I recorded a GPU peak temperature of 77°C and a memory peak of 82°C after one hour of playing The Last of Us Part One at 4K maximum settings.

Remarkably, the fans spun at only 1,250 RPM, rendering the card virtually silent under heavy load.

Switching to the Gaming BIOS increased the fan speed to 1,650 RPM, which lowered the GPU temperature to 67°C and the memory temperature to 72°C. Even at these elevated RPMs, noise levels remained modest, far quieter than most high end air cooled cards.

Compared to NVIDIA's Founders Edition, the Suprim OC is quieter in Silent BIOS and runs significantly cooler in Gaming BIOS. After normalizing noise to 40 dB, the Suprim OC maintained an 8°C advantage over the Founders Edition, demonstrating its superior cooling capacity and acoustic refinement.

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Overclocking Headroom

Out of the box, the Suprim OC features a boost clock of 2,565 MHz and memory running at 28 Gbit/s. We pushed the GPU to 2,750 MHz and increased the memory to 30 Gbit/s. Under load, this allowed the core to sustain 2,970MHz on average, drawing around 600W of power.

Temperatures under this overclock peaked at 78°C for the GPU and 84°C for the memory, with the auto-fan speed maintaining approximately 1,410 RPM. Despite the enormous power draw, the cooler kept temperatures well within safe limits.

If you're comfortable adjusting BIOS settings and tweaking fan curves, you'll uncover additional performance while maintaining manageable thermals and noise levels.

Comparison with Founders Edition

When compared to NVIDIA's Founders Edition at stock settings, the Suprim OC exhibits several advantages. In Silent BIOS, it operates more quietly than the Founders Edition, though it runs about 4°C hotter on the GPU. Switching to the Gaming BIOS not only makes it quieter than the Founders Edition but also allows it to run 6°C cooler.

Memory cooling is even more impressive: the Suprim OC runs 6°C cooler at stock settings, 16°C cooler in Gaming BIOS, and 18°C cooler when both cards are normalized to 40 dB.

Additionally, we noticed electrical noise—commonly referred to as coil whine—on the Founders Edition sample, whereas the Suprim OC remained free of such artifacts. For silent operation and superior cooling, MSI outperforms NVIDIA's model.

Gaming Benchmarks

In gaming benchmarks at 4K maximum settings, the performance uplift over the Founders Edition is modest but consistent. In Dying Light 2, the Supreme OC delivers about 2% more frames per second at stock clocks and approximately 4% more when overclocked. The Last of Us Part One sees a 5% gain in stock and 8% when overclocked.

Delta Force benefits by up to 6% stock and 10% overclocked, reaching roughly 175 fps in our test. In Marvel Rivals, the card is about 4% faster at stock and 7% faster when overclocked.

The Suprim OC is an appealing alternative for enthusiasts due to its reduced temperatures, softer acoustics, and significant overclocking headroom, even though the raw frame rate gains may not justify the cost.

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Power Consumption and Connector Temperatures

Power consumption is a critical consideration with a card of this magnitude. Under load, the Suprim OC consumed at least 7% more power than the Founders Edition, with peaks reaching 15% higher in specific titles like Plague Tale Requiem. More concerning is the load on the PCIe power connector.

The single 12 V high power PCIe connector peaked at 600W when stock and at 650W when overclocked. Connector temperatures reached 70°C stock and climbed to 80°C under overclocked conditions.

Although these figures remain within safety margins, it will be strongly advised to verify that the power cable is fully seated. MSI's yellow-tipped adapter ensures proper insertion, although a loose connection can cause overheating or damage over time.

Value Proposition

The MSI GeForce RTX 5090 Suprim OC is a statement piece. Its enormous cooler, robust power delivery, and premium finishes set it apart from both the Founders Edition and most other partner cards.

Expect to pay well above the $2,000 US base MSRP, but in return, you receive whisper-quiet operation in Silent BIOS, industry-leading cooling in Gaming BIOS, and exceptional overclocking potential.

Minimal coil whine and a clean, aggressive design further solidify its place at the top of the RTX 5090 hierarchy.

If you demand the best in acoustic and thermal performance, and your case can accommodate its substantial dimensions, the Suprim OC stands out as one of the finest offerings available. You only need to ensure proper support and cable seating to enjoy what this beast has to offer fully.

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