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Two green DDR3 DIMM sticks with black chips, no heat spreaders

Computer Memory Solutions

Computer Memory Solutions 8GB (2x4GB) DDR3 1600MHz CL11 1.5V DIMM memory upgrade

SKU CH-8Z0R-QKSZD

8GB dual-channel DDR3 kit at 1600MHz CL11 for Gateway SX2185 and SX2855 desktops

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR3 1600 (PC3 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Memory timings11-11-11
  • Rated voltage1.5 V
  • 8GB dual-channel kit boosts multitasking on Gateway SX desktops
  • DDR3-1600 CL11 timing delivers responsive 12800 MT/s throughput
  • 5 V unbuffered DIMMs install without BIOS voltage tweaks
  • 240-pin form factor matches the two factory memory slots exactly
  • Major-brand chips validated for SX2185-UR21, SX2185-UR24, SX2855-UB22P

Gateway SX2185 compatible DDR3 kit

This 8 GB kit contains two 4 GB DDR3 DIMMs rated at 1600 MHz with CL11 timing. It is built specifically for Gateway SX2185-UR21, SX2185-UR24 and SX2855-UB22P desktops. The modules are non-ECC, unbuffered and run at the standard 1.5 V. Buyers who need ECC or registered memory cannot use this kit.

Straightforward DIMM installation

The 240-pin DIMMs slot directly into the two memory sockets on the motherboard. No tools are required beyond opening the case and pressing each module until the retention clips click. The main risk is inserting a stick backwards or not seating it fully, which will prevent the system from posting. Mixing these modules with existing memory of a different speed or voltage can also cause instability.

Check your Gateway model and socket count

Verify that your desktop is one of the three Gateway models listed above before ordering. The board provides only two DIMM slots and the manufacturer states a maximum of 8 GB, so this kit fills the system completely. If your chassis uses a different motherboard or has four slots, this kit may not be the correct match.

How it compares

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

Price $20.99
Cheaper than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB (2 × 4 GB)
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $2.62 per GB
Cheaper than about 91% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM5126412800DIMM
Total capacity8 GB (2 × 4 GB)
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 1600 (PC3 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
Memory timings11-11-11
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsGateway SX2185-UR21, SX2185-UR24, SX2855-UB22P
In the box
Included items2 Memory RAM Sticks

Questions about this item

How can I confirm the kit is running at 1600 MHz with CL11 timing after installation?

Open the BIOS or a tool such as CPU-Z and check that the memory frequency reads 1600 MHz and the CAS latency shows 11-11-11.

What does the package contain and is anything else required for the Gateway SX2185-UR21?

The box includes two 4 GB 240-pin DDR3 DIMMs; the Gateway SX2185-UR21 has two slots and supports a maximum of 8 GB, so no extra modules are needed.

Which version should I choose for a Gateway SX2855-UB22P that currently has one empty slot?

This 8 GB kit (2 × 4 GB) fills both slots and matches the system's 8 GB maximum, making it the correct choice for a full upgrade.

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