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Two green DDR4 UDIMM sticks, black chips, gold contacts

SK hynix

SK hynix HMA851U6DJR6N-XN 8GB (2x4GB) DDR4-3200 desktop RAM

SKU CH-F09V-AR745 MPN HMA851U6DJR6N-XN

A dual-channel kit of two unbuffered 4 GB DDR4 modules running at 3200 MT/s with CL22 latency

  • Capacity8GB (2 x 4GB)
  • SpeedDDR4 3200 (PC4 25600)
  • Tested Frequency22
  • CAS LatencyCL22
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • 8 GB total capacity for everyday multitasking
  • Dual-channel 2×4 GB kit improves bandwidth
  • DDR4-3200 speed rated at PC4-25600
  • Low 1.2 V operation reduces power draw
  • 288-pin UDIMM fits standard desktop slots

8 GB DDR4-3200 dual-channel kit

This kit provides 8 GB of DDR4 desktop memory in two 4 GB unbuffered modules rated for 3200 MT/s at CL22. It is intended for mainstream PC builds or upgrades that need standard JEDEC performance without manual tuning.

Check 288-pin DDR4 slots and 1.2 V support

Verify that the motherboard has two free 288-pin DDR4 DIMM slots and runs memory at 1.2 V. The modules are unbuffered non-ECC UDIMMs, so they require a consumer desktop platform that accepts standard unregistered memory.

Steady throughput at rated JEDEC settings

Under sustained load the modules operate at their validated 3200 MT/s frequency with CL22 timings at the standard 1.2 V. No XMP profile or voltage increase is needed to maintain this throughput during extended workloads.

Highlights

  • 8 GB total capacity for everyday multitasking
  • Dual-channel 2×4 GB kit improves bandwidth
  • DDR4-3200 speed rated at PC4-25600
  • Low 1.2 V operation reduces power draw
  • 288-pin UDIMM fits standard desktop slots

Specifications

BrandHynix
SeriesDesktop Memory
ModelHMA851U6DJR6N-XN
Capacity8GB (2 x 4GB)
SpeedDDR4 3200 (PC4 25600)
Tested Frequency22
CAS LatencyCL22
ECCNo
Buffered/RegisteredUnbuffered

Questions about this item

What comes in the box and do I need to buy anything else to install the 288-pin modules?

The package contains two 4 GB DDR4 UDIMM modules giving 8 GB total. No extra parts are required; the sticks plug directly into standard desktop DIMM slots.

Should I choose the CL22 kit or a lower-latency version for my DDR4-3200 build?

This kit runs at DDR4-3200 with CL22 timings at 1.2 V. If your motherboard supports XMP or manual timing adjustment you can select a tighter-latency kit, otherwise this CL22 set will operate at the rated speed out of the box.

What does the PC4-25600 rating mean once the memory is running in my PC?

PC4-25600 indicates a peak transfer rate of 25 600 MB/s per module at DDR4-3200. In practice the system will read and write at up to that bandwidth when the memory controller requests it.

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