Intel Arc Pro B60 Workstation Graphics Card Review with technical Analysis and Teardown – Battle of the small Workhorses under 1200 Euros

1 - Intro, overview and technical data 2 - Test system and equipment 3 - Teardown: PCB, topology and components 4 - Teardown: Cooler and fan 5 - Teardown: Material analysis and 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 - Temperatures, clock rate, power consumption, noise 18 - Summary and conclusion

Sparkle Arc Pro B60 thermal paste, sample preparation and TIMA5 evaluation

The factory-applied thermal compound of the Sparkle Intel Arc Pro B60 was analyzed in two steps: first by measurement on the Nanotest TIMA5 system according to ASTM D5470, then by material analysis using LIBS and microscopy. The aim was to determine the thermal performance as well as the material composition and structural stability.

The TIMA5 measurement showed a strictly linear dependence of the thermal resistance on the thickness over the entire layer thickness range from 20 to 300 µm, with a coefficient of determination of 0.9996 – an almost ideal curve without outliers. The calculated volume thermal conductivity is 5.77 ± 0.09 W/mK, the interfacial resistance 4.4 ± 0.4 mm²K/W. This puts the paste clearly in the upper mid-range of typical OEM formulations: significantly better than simple silicone oils or cheap pastes, but still below various high-end products. The behavior under load indicates a good rheological balance: it reliably fills micropores, shows no visible dewetting and initially remains mechanically stable.

The subsequent LIBS analysis confirmed this interpretation and provided the material basis: a dominant proportion of aluminum (≈ 47 %), accompanied by oxygen (≈ 26 %), zinc (≈ 13 %) and silicon (≈ 12 %). Carbon was not detected, which indicates an inorganically dominated formulation with a minimal polymer content. It is therefore a metal oxide-based paste based on aluminum and zinc oxide with silicon dioxide modification for viscosity control. This combination is typical for average OEM materials, where low oil separation and low ion contamination are paramount. But will it hold up in long-term operation? Who knows…

The microscopic cross-sectional images show an average particle distribution with recognizable phase separation after the approximately 35 operating hours of my test. The fine, inhomogeneous pore structure in the upper zone indicates plastic adaptation under pressure, without the formation of larger bubbles or delaminations. After several days of operation, the imprint image of the GPU remained largely clear and stable: no major cracking, no visible pump-out, no edge migration. However, the first signs of drying out and compaction can be seen. The paste still behaves reasonably well even after thermal stress, and the contact zones between the die, heatspreader and vapor chamber remain relatively intact.

In the overall evaluation, a clear picture emerges: The thermal compound of the Sparkle Arc Pro B60 is an average, oxide-based OEM formulation with medium conductivity and a certain degree of stability. It is aimed less at peak values than at reproducible performance in continuous operation. The measured thermal resistance is low enough to effectively integrate the large heatspreader and the massive vapor chamber. For a professional workstation card, this is a technically just acceptable choice – inconspicuous in the best sense of the word. And yet, or precisely because of this, a PTM pad would probably have been the better choice here.

The thermal pads

The LIBS analysis of the thermal pads used on the RAM components and other active components shows a significantly different composition than the GPU thermal compound. The main components are oxygen (≈ 41 %), aluminum (≈ 27 %), silicon (≈ 17 %) and a significant carbon content of around 12 %. Hydrogen is also measurable at just under 3 %, which indicates organic matrix components. The chemical signature indicates a polymer-bound oxide pad, the basic structure of which is based on silicone oil or a related polysiloxane polymer. The high oxygen and silicon content is typical for such silicone carriers, while aluminum oxide acts as the primary filler and significantly determines the thermal conductivity. The measured carbon content results from the organic binder, which provides elasticity and resilience.

The moderate aluminum content in combination with oxygen indicates a filler fraction that is designed for good heat conduction, but was deliberately not taken to the limit of mechanical stiffness. The pad should adapt sufficiently to uneven surfaces during assembly to ensure uniform pressure contact even with varying component heights. The finely dispersed aluminum and silicon oxides form a dense but still flexible composite structure that reliably transfers heat without hardening or cracking under cyclical heating.

The material design therefore corresponds to a classic medium conductivity range, presumably between 3 and 5 W/mK, which is completely sufficient for RAM chips, voltage converters and other secondary hotspots. The decisive factor here is not maximum thermal conductivity, but reproducible mechanical contact during repeated thermal expansion and contraction. The observed aluminum and silicon content confirms that Sparkle uses a material with typical high-grade OEM characteristics. In the end, the LIBS analysis shows a classic silicone-based thermal pad with a balanced ratio between organic matrix and inorganic filler phase. It is designed to provide stable thermal coupling over many cycles without oil separation or hardening – a technically clean, unobtrusive solution that fits in with the overall concept of the professionally designed Sparkle Arc Pro B60.

Vapor-Chamber

I sampled the vapor-chamber at several points using LIBS and examined the surface microscopically at the same time. The series of measurements shows a clear nickel signature on the surface, at certain points with a very high Ni content of up to almost 98%, plus small amounts of hydrogen from organic residues. In deeper layers or in areas with a thinner coating, the copper content rises sharply, which suggests a classic copper chamber with a nickel-plated exterior. Iron or chromium do not appear. The longitudinal grooves in the microscopy correspond to the typical grinding marks of the nickel-plated cover plate. Together with the structure of the cooling unit, this is consistent with a large-area vapor chamber made of copper with galvanically applied nickel as a corrosion and diffusion barrier. This makes sense for the contact with the thermal paste because nickel is harder, tarnishes less and the surface energy remains more stable over time.

Carrier body

For the carrier body, I analyzed the dark appearing, structured cast surface. The LIBS spectra show clear signals for carbon and silicon in addition to oxygen, the aluminum content is moderate depending on the measurement point, copper also appears in some cases. The pattern is consistent with a black-coated, die-cast aluminum component with silicone and pad residues on it. The increased carbon and silicon peak is plausibly from an organic coating. The combination of the measured elements – aluminum with a significant silicon content (typically between 10 and 20 %), accompanied by traces of copper and oxygen – is characteristic of a die-cast AlSi alloy, which is frequently used in cooling technology and especially in GPU cooler construction. These alloys (e.g. AlSi10Mg or AlSi12) combine the good casting properties of silicon with the high thermal conductivity and low density of aluminum.

Why silicon is added: Silicon acts as a flow improver and solidification modifier during casting. Even at proportions above 7 %, it lowers the melt viscosity, reduces the tendency to hot cracking and enables thin-walled, low-distortion components with high dimensional accuracy – exactly what is required for complex radiator housings. At the same time, silicon forms fine, hard precipitates in the microstructure, which increase mechanical stability and make the material less sensitive to local deformation. Thermally, the compromise is well chosen: Pure aluminum reaches around 235 W/mK, typical AlSi10 alloys are around 150 to 170 W/mK depending on the microstructure – still high enough to distribute heat efficiently, but significantly more dimensionally stable and easier to process in terms of casting technology.

The visual impression of the surface – gray, finely crystalline, slightly shiny with microscopic silicon precipitates – matches this exactly. In the LIBS analysis, these are reflected as high silicon and aluminum content, while the oxygen content is due to superficial oxidation, which is normal for any aluminum die casting. The support body of the Sparkle Arc Pro B60 is therefore not just a housing made of simple aluminum, but a precision-cast component made of AlSi alloy, which serves as the structural basis of the cooling unit. This choice of material makes technical sense: high dimensional stability, good thermal conductivity, chemical stability against nickel-copper components and low weight – ideal properties for a durable GPU cooler with vapor-chamber embedding.

Mechanically and thermally, this results in the expected duo of a solid aluminum carrier for generating form and screw forces and a large-area, nickel-coated copper vapor-chamber for the actual heat transport. This analysis thus shows a high-quality cooling solution with functional material separation and a metallurgically cleanly implemented connection, which also appears to be mechanically durable and optimized for cyclical thermal loads. That concludes this part of the process and we’ll now do another round of work – or even better: let’s get to work! Please turn the page once…