K4Z80325BC-HC14 memory DRAM GDDR for Antminer Avalon Hashboard

K4Z80325BC-HC14 GDDR Memory | 8Gb DRAM for Canaan Avalon A10 Hash Board Repair

The K4Z80325BC-HC14 is an 8Gb GDDR DRAM memory IC in the 180-ball FBGA package — the memory chip used on the Canaan Avalon A10 hash board. When the hashboard controller fails to boot or reports memory errors during self-test, replacing the K4Z80325BC-HC14 is the standard recovery path.

Headline specs: 8Gb density (256M × 32 organization), 14.0 Gbps speed, 16K / 32 ms refresh rate, 180-FBGA package. The high-bandwidth GDDR architecture is what the A10's controller depends on for buffering hashing-engine state.

When to Replace the K4Z80325BC-HC14

• Avalon A10 hashboard boot-loop — controller fails self-test on memory.
• Hashboard reports memory errors in the miner log.
• Intermittent hashboard crashes after thermal warm-up traced to memory corruption.
• Visible damage on the FBGA — burnt or cracked package.

K4Z80325BC-HC14 GDDR Memory Specifications

FAQ — K4Z80325BC-HC14 GDDR Memory

Q: Standard rework profile for 180-FBGA?
A: Standard BGA reflow — preheat the hashboard to 100-150°C, ramp to peak around 240-250°C, hold for 30-60 seconds, controlled cool-down. Use flux paste and clean pads with isopropyl alcohol between heat-up and chip-place. Always use a BGA reballing stencil sized for the K4Z80325BC pad pattern.

Q: Will another 8Gb GDDR memory chip work?
A: Same density and pinout might work electrically, but verify the 180-FBGA footprint matches exactly, and confirm the speed grade and refresh-rate parameters match the A10 controller's memory configuration. Substitute memory ICs sometimes pass initial boot but fail under sustained load.

Q: How do I confirm the memory is the failed part?
A: Hashboard test fixture diagnostic — most will report memory errors directly. Alternatively, swap with a known-good memory chip and re-test. Memory failures often manifest as random hashing errors that don't repeat in the same chip position.

Q: Bulk pricing?
A: Yes — email contact@lys-sz.com for tray-quantity pricing.

Related products

• H5TQ2G63GFR DDR3 Memory Chip
• AM29F400B-55EI NOR Flash Memory
• Avalon Control Board (1066 / 1166 / 1246 / 1266)
• Avalon A3205 Chip Tin Tool Fixture

Avalon A10 repair benches stocking K4Z80325BC-HC14 memory in volume? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.