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OWC
OWC 1U8D31R804GB 4GB DDR3 1866MHz CL13 desktop RAM
A 4 GB DDR3 desktop DIMM running at 1866 MHz with CL13 latency and 1.5 V operation
- Capacity4GB
- SpeedDDR3 1866 (PC3 14900)
- CAS Latency13
- Voltage1.5V
- ECCNo
- Buffered/RegisteredUnbuffered
- Boosts system responsiveness with a 4GB DDR3 1866MHz module
- Meets JEDEC and RoHS standards for a warranty-safe upgrade
- Simple DIY installation fits standard 240-pin desktop slots
- Runs at 1.5V CL13 without ECC for broad compatibility
- Direct replacement for Crucial CTM345S ensures correct fit
Capacity and Type
This OWC module provides 4GB of DDR3 desktop memory in a single 240-pin DIMM. It runs at 1866MHz with a CAS latency of 13 and operates at the standard 1.5V. The part is unbuffered, non-ECC and has no heat spreader.
Upgrade Suitability
The stick is a direct replacement for Crucial CTM345S and fits desktops or workstations that accept DDR3 1866 PC3-14900 modules. Systems requiring ECC, registered DIMMs, a different voltage or a higher density per slot should look at other parts.
Deciding Specification
The 1866MHz DDR3 speed combined with CL13 timing at 1.5V determines whether this module matches the motherboard's supported memory standard. Verify that the platform lists PC3-14900 240-pin unbuffered non-ECC DIMMs before purchasing.
Highlights
- Boosts system responsiveness with a 4GB DDR3 1866MHz module
- Meets JEDEC and RoHS standards for a warranty-safe upgrade
- Simple DIY installation fits standard 240-pin desktop slots
- Runs at 1.5V CL13 without ECC for broad compatibility
- Direct replacement for Crucial CTM345S ensures correct fit
Specifications
| Brand | OWC |
|---|---|
| Part Number | 1U8D31R804GB |
| Capacity | 4GB |
| Speed | DDR3 1866 (PC3 14900) |
| CAS Latency | 13 |
| Voltage | 1.5V |
| ECC | No |
| Buffered/Registered | Unbuffered |
| Color | Standard |
| Heat Spreader | No |
| Recommend Use | Desktops |
| LED Color | None |
Questions about this item
What motherboard slot and voltage does this 240-pin 1.5 V DDR3 DIMM require?
It fits a standard 240-pin desktop DDR3 slot and runs at 1.5 V.
Will this CL13 1866 MHz module run stably alongside my existing CL11 1866 MHz DDR3 sticks?
The system will clock all modules to the slowest common timing; the CL13 module will operate at CL11 when paired with CL11 memory.
How can I confirm the module is recognised at 1866 MHz CL13 after installation?
Check BIOS or a tool such as CPU-Z; it should report DDR3 1866 MT/s, PC3-14900 and CAS latency 13.
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