We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Two green DDR4 UDIMM sticks, black chips, gold contacts

SK hynix

SK hynix HMA851U6DJR6N-XN 8GB (2x4GB) DDR4 3200MHz PC4-3200AA UDIMM 1.2V desktop RAM

SKU CH-5TJR-94ZVS MPN HMA851U6DJR6N-XN

A matched pair of 4 GB unbuffered DDR4 modules running at 3200 MHz with a low 1.2 V operating voltage

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Dual-channel 8 GB kit boosts multitasking headroom
  • 3200 MHz DDR4 speed feeds data faster to the CPU
  • Low 1.2 V operation reduces system power draw
  • Unbuffered 288-pin UDIMM fits standard desktop slots
  • Two 4 GB modules enable matched-pair performance

Kit composition

This SK hynix kit provides 8 GB of desktop memory as two 4 GB unbuffered UDIMM modules. It suits builders adding standard capacity to a DDR4 platform. Buyers who want more storage or need ECC error correction should look elsewhere.

DDR4 interface limits

The modules run at DDR4 3200 (PC4-25600) with a 1.2 V operating voltage and 288 pins. This is the electrical and mechanical ceiling of the DDR4 UDIMM standard; faster speeds or lower voltages are not defined for this form factor.

Matched-pair specification

The two modules are factory matched for identical 4 GB capacity and DDR4 3200 timing. A single module or a mixed-capacity set would not deliver the same dual-channel behaviour.

How it compares

Measured against everything we stock in Desktop RAM, at today’s prices. Recalculated every night.

Price $93.99
Typical for this category: the median of 3,647 items is $90.99.
Total capacity 8 GB (2 × 4 GB)
Lower than about 60% of the 3,251 comparable items (median 16 GB).
Price per GB $11.75 per GB
Pricier than about 74% of the 3,251 comparable items (median $6.75 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameHynix
Product lineDesktop Memory
Model nameHMA851U6DJR6N-XN
Total capacity8 GB (2 × 4 GB)
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.2 V

Questions about this item

Should I pick the 2x4GB kit or a single 8GB module?

This kit provides two 4GB modules for 8GB total, enabling dual-channel operation on boards with two or four slots; a single 8GB stick would run in single-channel mode unless a second identical module is added later.

What does the DDR4-3200 rating deliver in daily use?

The modules run at 3200 MT/s with a PC4-25600 bandwidth ceiling, giving noticeably snappier multitasking and gaming frame-times versus 2666 MT/s memory when the CPU and motherboard support the speed.

Will the 288-pin UDIMM fit my DDR4 board and what speed ceiling applies?

Yes, the 288-pin unbuffered DIMM is the standard DDR4 desktop form factor; the kit is rated for DDR4-3200 (PC4-25600) and will down-clock automatically if the platform only supports a lower data rate.

More in Desktop RAM

Similar items