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Electronic Scrap
RAM Memory Modules
Grade: VariousHigh Tier
Computer memory sticks with gold edge connectors
Market Price EstimateUpdated Daily
$2,850/ MT
+165 (6.1%)vs yesterday
Verified specifications & market data
Chemical Composition
Elemental breakdown by percentage weight.
Standard composition limits
Values represent maximum allowed percentage unless otherwise noted.
Physical Properties
Material form, density, and contamination specifications.
End-of-life computer memory modules; universal computing component; moderate precious metal content (0.02-0.15g gold concentrated on edge connectors; 5-30g copper; precious metal recovery gold-focused on connectors); ubiquitous e-waste stream (memory in every computer); SUBSTANTIAL supplier base (245 suppliers); volume-driven commodity; edge connector gold primary value driver; environmental straightforward (RoHS modern standard); industry-specific classification standardized
Acceptable Inclusions
- Gold plating 0.02-0.15g (memory specification; edge connectors)
- Copper 5-30g (secondary value; acceptable)
- Nickel <2g (plating component)
- Silver <1g (trace)
- Solder 2-15g (lead-free modern typical)
- PCB substrate 5-50g (light; inert)
- Semiconductor chips 3-20g (inert silicon)
- Minor dust/oxidation (typical post-use)
Prohibited Materials
- Gold <0.02g (below memory specification)
- Mercury components (memory non-compliant)
- Batteries attached (active hazmat)
- Severe corrosion/degradation
Quality Assurance
Testing protocols, sampling methods, and acceptance criteria.
Sampling Protocol
frequencyStratified random sampling by generation; generation diversity verification
maximumQuantity500+ modules per shipment
minimumQuantity50-200 modules or 10-30 kg
percentage10-15% of lot
stratificationSample across different memory generations; module types; pin counts; generation mix validation
Acceptance Limits
all Criteria Must Pass: memory module confirmed; generation ; gold connectors confirmed; generation mix ; pricing adjustment applied
copper ContentCopper 5-30g confirmed; secondary value component verified
generation IdentifiedMemory generation confirmed; pin count verified; type established
generation MixGeneration distribution documented; weighted average gold calculated; pricing adjustment determined
gold ConnectorsGold edge connectors evident; precious metal architecture confirmed; 0.02-0.15g range verified
memory Authenticitycomputer memory module; specification verified
rohs ComplianceRoHS compliance likely; no obvious hazmat; memory standard met
Weight Tolerance
measurementVerified by certified scale; weight certificate typical for memory shipments
variance±3% from expected weight
Required Test Methods
Visual Inspection & Memory Type Identification
CRITICAL
Purpose
- identify memory type (SDRAM/DDR/DDR2/DDR3/DDR4/DDR5)
- confirm pin count
- estimate gold content by generation
- assess condition
Acceptance Criteria
- Memory module clearly identified
- generation confirmed by pin count/substrate
- gold edge connectors evident
- condition acceptable
Procedure
- 100% sample visual inspection
- identify pin count (168=SDRAM, 184=DDR, 240=DDR2/3, 288=DDR4)
- confirm generation
- assess connector gold brightness/coverage
Memory Generation Verification
CRITICAL
Purpose
- verify memory generation
- estimate gold content by DDR type
- predict precious metal value and generation mix impact
Acceptance Criteria
- Generation identified (DDR2/3/4)
- gold content estimate aligned with type
- generation-based value confirmed
Edge Connector Gold Assessment
CRITICAL
Purpose
- assess gold plating on edge connectors (primary value)
- verify precious metal presence
- estimate plating thickness/coverage
Acceptance Criteria
- Gold connectors evident
- plating coverage confirmed
- precious metal architecture apparent
- connector gold 0.02-0.15g confirmed
Generation Mix Validation
CRITICAL
Purpose
- confirm generation distribution (DDR2% vs. DDR3% vs. DDR4%)
- calculate weighted average gold per module
- determine premium/discount
Acceptance Criteria
- Generation mix documented
- weighted average gold calculated
- pricing adjustment determined
Procedure
- Sample generation distribution
- calculate DDR2/3/4 percentages
- determine gold weighting
- apply generation-mix premium/discount
Copper Content Assessment
Purpose
- Verify copper 5-30g per module
- secondary commodity value confirmation
Acceptance Criteria
- Copper content within range
- secondary value component verified
Hazmat RoHS Spot-Check
Purpose
- Verify RoHS compliance
- confirm no mercury/extreme hazmat
- memory standard compliance
Acceptance Criteria
- RoHS compliance likely
- no obvious hazmat detected
- memory standard met
XRF Elemental Analysis
Purpose
- COMPREHENSIVE verification of gold content (0.02-0.15g GENERATION-DEPENDENT) + copper (5-30g) + hazmat (Pb, Cd, Hg)
Acceptance Criteria
- Gold 0.02-0.15g (GENERATION CONFIRMED: DDR2 higher, DDR4 lower), Copper 5-30g, Pb <0.1% (RoHS), Cd <0.01%, Hg <0.001%