901 Grams of Solid Brass, Borosilicate Glass, and $409.38: How the Thermal Grizzly DeltaMate MPII Intel 1851 Water Block Outclasses 360mm AiOs
Priced at $409.38 (?349.90 incl. VAT in Europe) for the standalone processor block alone, the Thermal Grizzly DeltaMate CPU Block MPII Intel 1851 (part number S-TG-DM-CPU-002) operates in a completely different league than mainstream closed-loop coolers. Engineered and manufactured in Brandenburg, Germany under the leadership of CEO and extreme overclocker Roman "der8auer" Hartung, this custom-loop flagship tips the scales at a massive 901 grams and pairs a 70-microfin hybrid cold plate with solid metal construction to tame high-density thermal loads on Intel LGA 1851 and LGA 1700 processors.
A 70-Microfin Hybrid Cold Plate Tuned for Intel Tile Architectures
While a standard 360mm all-in-one (AiO) liquid cooler relies on a generic cold plate and a compact integrated pump to handle 250W+ loads on unlocked Intel Core Ultra chips, the DeltaMate CPU Block MPII Intel 1851 is engineered specifically around the asymmetric heat distribution of Intel's disaggregated tile layout. Because the primary compute tile hotspot on LGA 1851 no longer sits uniformly across the center of the integrated heatspreader (IHS), Thermal Grizzly machines its nickel-plated electrolytic copper base with a dual-zone microfin array.
Directly above the high-heat CPU tiles, the cold plate concentrates 40 ultra-fine microfins measuring 0.2 mm in both fin width and slot spacing, creating an expansive surface area for rapid thermal transfer into the coolant. Above and below that central core zone, 30 additional microfins with a 0.3 mm width optimize fluid distribution and keep hydraulic restriction in check across the loop. Instead of relying on a removable silicone insert, the internal distributor and jet plate are machined directly into the solid nickel-plated brass upper housing, forcing coolant into the micro-channels with zero mechanical flex.
901 Grams of Nickel-Plated Brass, Schott BOROFLOAT Glass, and a Magnetic Cover
The remarkable 901-gram net weight (within a compact 94.5 x 94.5 x 26 mm footprint, or 33 mm installed height) comes down to the complete absence of structural plastics or acrylic threads. The main body is milled from a solid block of nickel-plated brass featuring integrated G1/4-inch female ports (6 mm thread depth, offset to the right side with a dedicated bottom inlet and top outlet). This all-metal port construction eliminates any risk of cracking threads when tightening heavy compression fittings, though builders should note that the tight port spacing prevents threading two bulky 90-degree rotary adapters side by side without an extender.
For the viewing window, Thermal Grizzly ditches conventional acrylic (PMMA) in favor of thick Schott BOROFLOAT borosilicate glass. Cut via waterjet and hand-sanded along the edges, the borosilicate pane is UV-resistant, scratch-resistant, and impervious to alcohol-based cleaners while refracting the integrated 3-pin 5V digital ARGB LED lighting with crystal clarity. Surrounding the glass window, a black anodized aluminum cover attaches via four corner magnets to completely conceal the six housing screws and mounting posts, offering a clean industrial look worthy of the extreme builds we recently covered in our roundup of flagship GeForce RTX 50 hardware and 800W vBIOS mods.
Outclassing 360mm AiOs Under 250W Loads and Individually Pressure-Tested to 1 Bar
When paired with a high-flow custom radiator loop on a processor like the Intel Core Ultra 7 265K or Core Ultra 9 285K sustaining a full 250W power limit in Cinebench R23, the DeltaMate MPII immediately demonstrates why closed-loop 360mm AiOs hit a physical wall. Where an AiO's lower flow rate and thinner cold plate allow P-Core temperatures to spike under sustained rendering or heavy memory tuning (such as high-frequency 7,800 MT/s DDR5 desktop setups), the DeltaMate MPII keeps the CPU-to-coolant delta tightly controlled and shaves crucial degrees off peak tile temperatures compared to rival custom blocks.
Every unit leaving Thermal Grizzly's German facility undergoes individual leak verification, shipping with a hand-filled 1 bar pressure test certificate (600 mbar internal test protocol) and high-durability EPDM rubber gaskets rated for a recommended 0.6 bar maximum loop operating pressure. To back up its $409.38 price tag, the package includes a massive 6-gram syringe of Thermal Grizzly Duronaut thermal paste, an LGA 1851/1700 backplate, 2 mm and 2.5 mm Allen keys, and a foolproof spring-loaded mounting kit where the steel springs and M4 polyamide washers sit flush inside the polished corner wells the exact moment optimal mounting pressure is reached.
My Test Bench: A Piece of Industrial Jewelry That Owns Its Excess
Let's be completely honest: spending $409.38 on a standalone CPU water block alone, roughly the price of two top-tier 360mm AiO liquid coolers combined, makes zero sense from a conventional price-to-performance standpoint. But value-per-dollar is not the arena Roman Hartung built the DeltaMate lineup to compete in. Holding a 901-gram block milled from solid nickel-plated brass, topped with hand-sanded Schott borosilicate glass and accompanied by a hand-signed factory pressure certificate, feels like mechanical watchmaking applied to PC water cooling. For hardcore builders assembling an uncompromising LGA 1851 open loop who refuse to tolerate cracked acrylic threads or generic plastic shrouds, it is a masterclass in over-engineered hardware.
PC hardware enthusiast and competitive gamer, Arthur 'Heimdall' splits his time between France and the UK working in enterprise B2B software solutions. A business school graduate passionate about component benchmarking, he has been building, modding, and tuning PCs since childhood, optimizing every thermal degree and millisecond of display latency. An avid gamer across Assassin's Creed and sandbox titles, he forged his alliance with Grimtag and Chaya during late-night World of Warcraft raids before joining Pro-Gamer.
