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 240-pin DDR2 DIMM sticks in a matched pair

Computer Memory Solutions

Computer Memory Solutions 4GB (2x2GB) DDR2 800MHz PC2-6400 CL6 1.8V Non-ECC DIMM Dell Precision 390

SKU CH-002N-198BT

A 4 GB dual-channel DDR2 kit rated at 800 MHz with CL6 timings, validated for the Dell Precision 390

  • Total capacity4 GB (2 × 2 GB)
  • Rated speedDDR2 800 (PC2 6400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL6
  • Memory timings6-6-6
  • Rated voltage1.8 V
  • Guaranteed compatibility with Dell Precision 390 workstations
  • 4 GB total capacity in a matched 2 × 2 GB kit
  • DDR2-800 (PC2-6400) speed for responsive performance
  • Low CL6 latency with 1.8 V operation
  • Unbuffered non-ECC 240-pin DIMMs ready to install

Dell Precision 390 upgrade kit

This 4 GB kit contains two 2 GB DDR2 modules rated at 800 MHz with CL6 timings and 1.8 V operation. The unbuffered, non-ECC DIMMs use a 240-pin layout and are built with major-brand chipsets. Computer Memory Solutions validates the kit specifically for the Dell Precision Workstation 390.

Owners of a Precision 390 needing a matched pair

The kit suits users restoring or expanding a Precision 390 that accepts DDR2 memory. Systems that require ECC, registered modules, a different pin count, or a later memory generation will not accept these sticks. Buyers with other Dell workstations should verify their exact model before purchasing.

DDR2 800 MHz CL6 specification

The modules run at PC2-6400 speed with 6-6-6 timing at 1.8 V. This electrical and timing profile is the single factor that determines whether the kit will post and run stably in the Precision 390. Any deviation in speed, voltage or latency means the memory is not the correct part for this workstation.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $18.99
Cheaper than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB (2 × 2 GB)
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $4.75 per GB
Cheaper than about 80% of the 20,941 comparable items (median $8.19 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 nameComputer Memory Solutions
Model nameCM256646400DIMMDR
Total capacity4 GB (2 × 2 GB)
Product type240-Pin DDR2 SDRAM
Performance
Rated speedDDR2 800 (PC2 6400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL6
Memory timings6-6-6
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.8 V
Compatibility
Compatible systemsDell Precision Workstation 390
In the box
Included items2 Memory RAM Sticks

Questions about this item

What DDR2 standard and speed does this 240-pin kit run at?

The modules are rated PC2-6400 at 800 MHz with CL6 timing and operate at 1.8 V.

Will the two 2 GB sticks fit the four DIMM slots in my Precision 390?

Yes, each stick is a standard 240-pin unbuffered DIMM and the system has four slots supporting up to 8 GB total.

What is the correct way to seat the pair so the board recognises the full 4 GB?

Insert both modules firmly until the retention clips click, then power on and verify 4 GB in BIOS; the common mistake is leaving one clip unlatched.

More in Model-Specific Memory Upgrades

Similar items