A real surprise – Intel Arc Pro B50 in the test and big workstation duel under 450 euros

1 - Introduction, unboxing and technical data 2 - Test system and equipment 3 - Teardown: PCB, topology and components 4 - Teardown: Cooling solution 5 - Teardown: Material analysis and ASTM TIM testing 6 - Autodesk AutoCAD 7 - Autodesk Inventor Pro 8 - PTC Creo 9 - Dassault Systèmes Solidworks 10 - Autodesk Maya 11 - SPECviewperf 15 (2025) 12 - Adobe Photoshop 26.10 13 - Adobe After Effects 2025 14 - Adobe Premiere Pro 25.41 15 - AI Benchmarks (AI Vision, Image, Text) 16 - Rendering 17 - Temperatues, clock rates, power draw and fan speed 18 - Summary and conclusion

Cooler analysis of the Intel Arc B50 Pro – Brachially simple, but well thought out

Anyone who believes that only high-gloss RGB cooling blocks count on gaming cards will be proven wrong with the Intel Arc B50 Pro. The heat sink of this low-profile card not only looks like something out of a textbook for industrial functional technology, but also works in exactly the same way: no frills, no show, but with a clear idea. The GPU rests directly on a flat milled copper plate, which is centrally embedded in the aluminum body. The copper piece is cleanly embedded mechanically and connected to the aluminum by a press fit and machined chamfer, presumably without solder or a thermal bonding layer. The contact surface shows no chamfer or structure, but a typical milling with a transverse pattern. This means that exactly where the GPU is located, copper is traditionally used for the high thermal conductivity, while the remaining mass is accounted for by aluminum, which is cheaper but easier to machine.

A look at this of the cooler shows the cleanly milled contact surfaces for the six outer VRM thermal pads and the milled recesses and openings for the coils, which fit the three double coils and six power stages of the Vcore rail. A large, centrally embedded copper plate accommodates the central area of the GPU, while additional pads for VRAM and secondary components are located further out. The clear separation of the thermal zones is striking: GPU, VRM and memory are separated from each other, the heat sink provides a defined, geometrically delimited area at each point. This works quite well as long as the pads are well chosen.

In my own material tests, I regularly show that such a copper pad is far superior to the pure aluminum solution in terms of thermal conductivity, especially for localized hotspots. Aluminum would oversaturate locally too quickly when a die gets really hot. The copper buffers better and distributes the heat much faster to the fins above it. The second special feature: the cooling fins, or rather the closed cooling channels. What you see here is a punched, mechanically connected aluminum fin structure with so-called punched embossed teeth. These teeth slightly increase the surface area, create micro-turbulence and improve the airflow with minimal back pressure. The structure is strongly reminiscent of typical OEM blower designs from the workstation or embedded segment. No fin finning, no clamped heatpipes, just a solid block with sufficient throughput and clearly defined airflow.

This really isn’t a thing of beauty, but it is very reproducible. Series production is happy about this and so are the controllers. Yes, Intel has not created a cooler art here, but a thermomechanically sophisticated working solution at a low price. Copper where it needs to be. Aluminum where it can. Pads where it helps. And no gimmicks with heat pipes, vapor chambers or exotic materials. This fits in with the industrial aspirations of the Arc B50 Pro. In practice, this means: low dispersion in series production, predictable thermal performance and: easy interchangeability. The cooler can be removed and replaced without any effort. This not only appeals to service technicians, but also to system integrators who rely on modularity and maintainability.

Focus on the fan: Champion CF4028U12S

When a fan calls itself a “Champion”, it’s worth taking a closer look. In the case of the Intel Arc B50 Pro, a radial model of the type CF4028U12S is at work here, a 12-volt model with an impressive 0.60 amps nominal current consumption, which corresponds to a power consumption of 7.2 watts. For a 40 mm fan, this is definitely in the upper range, which also explains why this small radial fan can produce a nice background noise when it needs to. But spoiler alert: it doesn’t have to. The “Champion” brand belongs to Guangdong Champion Electronic Technology Co., Ltd. from China, which specializes in high-quality industrial fan solutions. The CF4028U12S is part of a series specially developed for compact blower applications. With a typical rated speed of around 12000-14000 rpm and an air volume of up to 8-10 CFM (depending on back pressure), the fan delivers enough flow to actively blow through the fin structure of the heat sink.

The black shroud, i.e. the front radiator cover, is made of sturdy plastic, which increases both thermal resistance and rigidity. The part is designed as a single piece and is mechanically shaped in such a way that it enables continuous airflow from the fan via the heat sink towards the slot bracket. The rear shows a typical grid with round molded cores and stiffening ribs. Important here: This blower design prevents the airflow from escaping sideways and channels it specifically over the fins and then out of the housing. This is precisely what distinguishes it from axial solutions with an open radiator, which distribute warm air in the housing. This is particularly important in narrow workstations or 1U/2U servers.

The fan connection cable has four poles and is routed via a standard GPU FAN header, which enables PWM control and tacho feedback. Even though the fan is almost inaudible when idling, it can generate a considerable amount of noise under full load due to the relatively small cross-section. This is due to the system and the form factor, not the fan itself.

Overall, the Champion CF4028U12S fits perfectly into the overall thermomechanical concept of the card. The airflow is consistently guided through the cooling fins to the slot bracket, without detours or losses. In combination with the copper-aluminum cooling plate on the GPU and the cleanly decoupled pad zones, this results in an industrially sophisticated, service-friendly layout. The aim here was clearly not RGB or optics, but robust continuous operation in tight housings. If you want to know what happens when you choose a fan not for YouTube unboxings but for real workloads, the B50 Pro is the perfect answer.