Intel Pentium MMX Ceramic CPU – Vintage P55C Processor for Gold Recovery & Precious Metal Scrap Recycling
Buy Intel Pentium MMX Ceramic CPU – vintage P55C processors with MMX technology for gold recovery and precious metal recycling. High gold content pins, lid, and bonding wires. Contact us for bulk orders. Delivery by air, land & sea worldwide. Standard & express shipment available.
The Intel Pentium MMX Ceramic CPU (P55C family) is an enhanced version of the original Pentium I, introduced in 1997 with MMX (Multi-Media Extension) instruction set. These processors were manufactured using a high-quality ceramic Pin Grid Array (PGA) package, making them highly desirable for precious metal recycling and gold recovery from e-waste.
Like earlier ceramic Pentium CPUs, the MMX versions feature a gold-plated heat spreader (lid), gold-plated pins (up to 387 pins), gold bonding wires inside, and gold thick-film traces on the ceramic substrate. The MMX die was smaller (0.35µm process) but still contains significant gold in the package. For recyclers and refiners, the Pentium MMX ceramic series offers a consistent and profitable source of recoverable gold.
Gold-Bearing Components in Intel Pentium MMX Ceramic CPU:
| Component | Gold Content (Approx.) | Recovery Difficulty |
|---|---|---|
| Gold-plated lid / heat spreader | Moderate to High | Easy (mechanical removal) |
| Gold-plated pins (387 pins typical) | High | Moderate (depopulation or chemical stripping) |
| Gold bonding wires (internal) | Very High | Requires chemical refining |
| Thick-film gold traces on ceramic | High | Requires chemical refining |
| Gold-plated test points | Low | Integrated with ceramic |
Typical gold yield range: 0.5 – 1.2 grams per kilogram of ceramic Pentium MMX CPUs (slightly lower than original Pentium due to smaller die size but still excellent).
Key Specifications:
| Parameter | Details |
|---|---|
| Manufacturer | Intel Corporation |
| Series | Pentium MMX (P55C microarchitecture) |
| Package Type | Ceramic Pin Grid Array (PGA) – 296 or 387 pins (Socket 5/Socket 7) |
| Clock Speeds | 166 MHz, 200 MHz, 233 MHz (rare 266 MHz engineering samples exist) |
| Process Technology | 0.35µm (350 nm) / later 0.25µm |
| Die Size | 141 mm² (0.35µm) |
| Transistor Count | 4.5 million |
| Pin Count | 296 pins (Socket 5), 387 pins (Socket 7 – most common) |
| Pin Material | Gold-plated Kovar or copper |
| Lid Material | Gold-plated copper or nickel-copper with gold flash |
| Markings | Intel® Pentium® MMX logo, speed rating, S-spec number (e.g., SL27S, SL27T), often “MMX” printed on lid |
Common Models in This Series:
| Model | Clock Speed | Bus Speed | Multiplier | Socket | Pin Count | Relative Gold Yield |
|---|---|---|---|---|---|---|
| Pentium MMX 166 | 166 MHz | 66 MHz | 2.5x | Socket 7 | 387 pins | High |
| Pentium MMX 200 | 200 MHz | 66 MHz | 3.0x | Socket 7 | 387 pins | High |
| Pentium MMX 233 | 233 MHz | 66 MHz | 3.5x | Socket 7 | 387 pins | High |
| Mobile Pentium MMX (Ceramic) | 166-300 MHz | 66 MHz | Various | Mobile module | Varies | Moderate-High |
Key Applications:
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Precious metal recycling and gold recovery from e-waste
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Bulk gold scrap trading and refining feedstock
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Vintage computer collectors (desire boxed or functional units – we sell as scrap)
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Laboratory analysis for precious metal content
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Educational demonstrations of e-waste recycling
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Gold investment through scrap material
Available Quantities:
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Single units or small batches (for testing or collectors)
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Small lots: 10–50 pieces
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Wholesale lots: 100–500 pieces
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Bulk boxes: by weight (e.g., 5 kg, 10 kg, 25 kg)
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Full pallets (mixed or same model)
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Large quantities from decommissioned computers, servers, or industrial equipment
Intel Pentium MMX vs Other Ceramic CPUs for Gold Recovery:
| CPU | Gold per kg (Typical) | Scarcity | Notes |
|---|---|---|---|
| Intel Pentium Pro | Very High (1.5–3 g/kg) | Moderate | Highest gold |
| Intel Pentium I (60-200) | High (0.8–1.5 g/kg) | Common | Standard ceramic |
| Intel Pentium MMX | High (0.6–1.2 g/kg) | Common | MMX logo adds collector interest |
| Intel 486 Ceramic | High (0.7–1.2 g/kg) | Common | Older design |
| AMD K6 (Ceramic) | Moderate (0.4–0.8 g/kg) | Uncommon | Less common ceramic version |
Processing Tips for Refiners:
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Remove gold lid – Use heat gun (200-250°C) to soften thermal adhesive, then pry off carefully.
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Depopulate pins – Use decapsulation tool, heat, or chemical stripping (nitric acid method – professionals only).
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Process ceramic bodies – Crush and use aqua regia, cyanide leaching, or other industrial refining methods.
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Safety first – Always use proper PPE (gloves, goggles, fume hood), work in ventilated area, and follow environmental regulations.
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Assay representative samples – For large lots, send a sample to a certified laboratory for accurate gold content.
Quality & Condition:
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Sold as untested, non-functional scrap – no guarantee of electrical operation (collectors may still buy for display)
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Pins may be bent, oxidized, tarnished, or slightly missing – still counts toward total weight for gold recovery
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Ceramic may have minor chips, cracks, or discoloration – does not affect gold recovery
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Gold lid may be scratched or dull – gold content remains fully recoverable
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Some units may have residual thermal paste or adhesive – included in weight
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Often still have original gold appearance under the lid – visual inspection possible
Suitable For:
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E-waste recycling companies (professional scrap processors)
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Precious metal refiners (medium to large scale)
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Gold scrap traders and investors
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Vintage computer hobbyists (non-functional units for display or parts)
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Educational institutions (chemistry/metallurgy/ environmental science)
Not Suitable For:
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Building a working vintage PC (sold as scrap, not tested for function)
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Beginner refiners (chemical processes involve strong acids and heavy metals – professional equipment required)
Why Choose Our Intel Pentium MMX Ceramic Scrap?
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Consistent supply from verified decommissioning sources
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Authentic Intel ceramic packages (no counterfeit or fake chips)
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Clean, well-sorted lots (minimal plastic or mixed materials)
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Competitive pricing based on weight and typical gold yields
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Transparent sourcing – no stolen or illegally obtained e-waste
For more inquiries or to place an order (sample, small lot, or bulk wholesale quantities), please contact us. We deliver by air, land, and sea — internationally. Standard and express shipment options available.
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