K4ZAF325BM‑HC16 Samsung GDDR6 Memory Particle: Specifications, Compatible Replacements & Selection FAQ
Product Introduction
The K4ZAF325BM‑HC16 is a 16Gb GDDR6 SGRAM high‑speed graphics memory manufactured by Samsung, packaged in FBGA‑180 form‑factor. It is organized as 512M ×32‑bit, delivering a data transfer rate up to 16.0 Gbps with a nominal operating voltage of 1.35V. Each single device provides 2 GB physical memory capacity.
This memory IC was widely deployed in discrete graphics cards, embedded GPU modules and edge AI computing hardware. It acts as the original memory component for well‑known consumer graphics hardware such as the RTX 3060 series. Multiple chips can be paralleled on PCB to achieve larger total memory pools for high‑bandwidth graphic rendering and parallel AI data buffering.
It is important to note that the K4ZAF325BM‑HC16 has reached EOL (End‑of‑Life) status from Samsung official. New original factory production is discontinued. Current market supply mainly depends on leftover stock and excess inventory. Many hardware R&D teams and maintenance projects are facing shortage risks and actively searching for drop‑in compatible alternatives for BOM migration.
Core Product Features
- High‑speed GDDR6 performance Data rate reaches 16 Gbps per pin with 32‑bit I/O width. Theoretical bandwidth per single chip hits 64 GB/s. Multi‑chip parallel configuration can scale aggregate bandwidth to hundreds of GB/s, meeting heavy‑load graphic rendering and AI parallel data throughput requirements.
- Mature FBGA‑180 package footprint 180‑ball fine‑pitch BGA package. Standard PCB layout guidelines are widely available in industry. Soldering and rework processes are well‑established for graphics card, SoM and carrier‑board designs.
- 1.35V low‑voltage operation Compared with older‑generation GDDR5 solutions, GDDR6 reduces core operating voltage. It helps to lower overall system power consumption and thermal rise under continuous high‑utilization graphic workloads.
- 16‑bank internal architecture with optimized refresh timing 16 internal banks with 16K /32ms refresh scheme. Stable operation is guaranteed under long‑duration 7×24 running conditions for industrial and non‑stop embedded equipment.
- Extended operating temperature range 0℃ ~ +95℃ Covers mainstream consumer graphics applications and partial industrial embedded graphic boards. Suitable for both room‑temperature office devices and moderately harsh enclosure hardware without extra thermal modification.
- RoHS‑compliant lead‑free construction Meets global environmental compliance requirements for commercial and industrial end‑products.
Application Scope
- Discrete PC graphics cards: consumer gaming GPU, workstation graphic adapters. Used for original assembly, GPU repair and memory capacity modification projects.
- Embedded AI computing boards & edge NPU boxes: machine vision data buffer, AI inference frame cache.
- Industrial multi‑display controllers and embedded graphic output units.
- Game console graphic subsystem memory modules.
- FPGA development platforms for high‑speed image acquisition and real‑time video processing.
- Medical imaging auxiliary hardware, industrial vision inspection equipment graphic buffer.
Real‑world Project Application Cases
Case 1: Gaming GPU Repair & Memory Upgrade
A professional graphics card repair firm performs component‑level maintenance on RTX 3060 hardware. Damaged original K4ZAF325BM‑HC16 memory particles are replaced with available stock parts to restore card functionality. The same part is also applied for memory upgrade modification on RTX 3070 hardware. Eight pieces in parallel deliver total 16 GB memory, improving performance for high‑resolution gaming and local AI inference workloads. Since the original part is EOL, the repair shop builds secondary BOM options for future maintenance batches.
Case 2: Industrial Machine‑Vision NPU Carrier‑board Project
An industrial equipment manufacturer develops AI visual inspection hardware. Four units of K4ZAF325BM‑HC16 are populated on PCB to build 8 GB graphic cache buffer. The memory handles high‑resolution camera streaming data for real‑time object detection algorithms. As Samsung discontinued this part, the engineering team evaluates pin‑compatible substitutes for hardware revision of next‑generation product iteration.
Case 3: FPGA‑based High‑speed Image Capture Instrument
One research institution designs FPGA‑driven video output hardware. GDDR6 memory serves as large‑capacity frame buffer for ultra‑high‑frame‑rate image read‑write operations. Supply‑chain volatility pushes the engineering team to prepare multiple alternative part‑numbers as backup BOM options to avoid production halt risk.
Case4: Second‑source preparation for legacy industrial GPU module
A long‑lifecycle industrial control product still in mass production uses K4ZAF325BM‑HC16 on its graphic sub‑board. Because original production stopped, procurement team needs cross‑reference parts for second‑source qualification to guarantee multi‑year product supply.
Compatible & Alternative Part‑number Comparison
Important reminder: Always verify full datasheet before hardware replacement. Even pin‑compatible devices may require adjustments on controller timing, firmware or BIOS configuration. Sample validation is strongly suggested before mass production adoption.
Note: K4Z80325BC‑HC16 is only 8Gb density, half capacity. Cannot directly replace K4ZAF325BM‑HC16. Pay close attention to full part‑number prefix during component selection.
FAQ — Frequently Asked Questions
Q1: What type of chip is K4ZAF325BM‑HC16?
A: It is Samsung GDDR6 SGRAM high‑speed graphics memory particle, density 16 Gbit (2 GB), FBGA‑180 BGA package. Widely used for graphic cards and embedded AI accelerator boards. This component is officially EOL; available stock is the primary supply source in current market.
Q2: Can K4ZAF325BM‑HC16 be directly swapped with K4ZAF325BC‑SC16?
A: They share identical package, density and rated data speed with pin‑compatible footprint. Minor differences on silicon revision may require fine‑tuning on memory controller configuration in certain hardware platforms. Sample validation before mass manufacturing is highly recommended.
Q3: Can I drop‑in replace K4ZAF325BM‑HC16 with SK Hynix GDDR6 chips?
A: Physical package and ball‑out may match, yet DRAM timing parameters show subtle cross‑brand differences. Direct mass replacement without testing is not advised. Complete stability test including thermal cycling and long‑time burn‑in should be performed with samples.
Q4: What is the density of single K4ZAF325BM‑HC16 chip? How many chips are required for 12GB total memory?
A: Single chip capacity equals 16 Gbit = 2 GB. Six parallel devices compose total 12 GB memory array, which is the classic memory configuration applied for RTX3060 graphic adapter.
Q5: Since K4ZAF325BM‑HC16 is EOL, should new projects select this component?
A: Not recommended as primary BOM item for new designs. It is acceptable for legacy‑equipment repair and existing sustaining projects with accessible stock inventory. New developments should prioritize active‑production alternative memory parts to mitigate obsolescence & supply interruption risk.
Q6: What critical parameters need to be double‑checked for GDDR6 memory selection?
A: Memory density, I/O bit‑width, maximum data rate, BGA ball‑out package, operating voltage, refresh timing specification, host memory controller capability and component lifecycle status for long‑term supply assurance.
Q7: What risks will occur if I adopt EOL memory IC in new hardware projects?
A: Gradually shrinking stock quantity, price fluctuation, no official new wafer production, limited component traceability. Once inventory is exhausted, you will have to redesign PCB or re‑qualify alternative memory solutions.
Closing
If you are working on R&D component selection, suffering from part shortage or product obsolescence, or seeking reliable component suppliers, feel free to reach out to QIXINWEI. We can support you with engineering samples, full parameter comparison analysis and complete BOM kitting service. Our team can help you evaluate stock availability as well as pin‑to‑pin compatible alternatives to avoid supply‑chain disruption for your projects.