A-Tech 8GB DDR4-2400 UDIMM 16GB Kit (2x8GB) vs Timetec Premium DDR4-2666 UDIMM 1x16GB 2133 CL15
14.06 ns of true latency for Timetec Premium DDR4-2666 UDIMM 1x16GB 2133 CL15 against 14.17 ns for A-Tech 8GB DDR4-2400 UDIMM 16GB Kit (2x8GB), so the first of those is the quicker to respond. The site holds no current price for at least one of these, so what follows compares specifications alone.
| Specification | A-Tech8GB DDR4-2400 UDIMM 16GB Kit (2x8GB) | TimetecPremium DDR4-2666 UDIMM 1x16GB 2133 CL15 |
|---|---|---|
| Capacity (GB) | 16 | 16 |
| Speed (MT/s) | 2400better | 2133 |
| 17 | 15 | |
| True latency (ns) | 14.17 | 14.06better |
| Current best price | — | $129.99at Amazon.ca · captured 2026-09-13 |
| Price per GB | — | $8.12 |
No tracked price for A-Tech 8GB DDR4-2400 UDIMM 16GB Kit (2x8GB) at the moment. Nothing has been captured for it that this page will stand behind, so its price cells stay empty rather than carrying a stale figure.
A-Tech 8GB DDR4-2400 UDIMM 16GB Kit (2x8GB) vs Timetec Premium DDR4-2666 UDIMM 1x16GB 2133 CL15 in detail
True latency
Timetec Premium DDR4-2666 UDIMM 1x16GB 2133 CL15 is the lower-latency kit at 14.06 ns, against 14.17 ns for A-Tech 8GB DDR4-2400 UDIMM 16GB Kit (2x8GB) — a difference of 0.10 ns. That figure is what reconciles the two spec sheets: CAS latency counts clock cycles, so it only means something next to the clock it counts. A-Tech 8GB DDR4-2400 UDIMM 16GB Kit (2x8GB) runs 2400 MT/s at CL17; Timetec Premium DDR4-2666 UDIMM 1x16GB 2133 CL15 runs 2133 MT/s at CL15.
Transfer rate
A-Tech 8GB DDR4-2400 UDIMM 16GB Kit (2x8GB) is rated 2400 MT/s against 2133 MT/s for Timetec Premium DDR4-2666 UDIMM 1x16GB 2133 CL15 — 19200 MB/s per module, against 17064 MB/s. That is peak transfer rate, not access time: reaching a higher clock costs more cycles on each access, which is why the CAS numbers differ too, and why the true latency above is the figure that compares directly.
Kit layout
A-Tech 8GB DDR4-2400 UDIMM 16GB Kit (2x8GB) ships as 1 × 16GB and Timetec Premium DDR4-2666 UDIMM 1x16GB 2133 CL15 ships as 1 × 16GB — the same number of sticks either way, so both populate a board's slots identically.
Lighting and ECC
On the lighting question: A-Tech 8GB DDR4-2400 UDIMM 16GB Kit (2x8GB) does not have RGB lighting, and Timetec Premium DDR4-2666 UDIMM 1x16GB 2133 CL15 does not have RGB lighting. On error correction: A-Tech 8GB DDR4-2400 UDIMM 16GB Kit (2x8GB) is published with no ECC, and Timetec Premium DDR4-2666 UDIMM 1x16GB 2133 CL15 is published with no ECC. Whether ECC is worth having depends on the platform as much as the modules — the board and the CPU have to support it too.
Which to buy
The site holds no current price for at least one of these, so no buying answer follows: which is worth more turns on what each costs, and that figure is the one missing. On the specifications alone, Timetec Premium DDR4-2666 UDIMM 1x16GB 2133 CL15 is the quicker at 14.06 ns of true latency.
Common questions about this pair
- Is A-Tech 8GB DDR4-2400 UDIMM 16GB Kit (2x8GB) faster than Timetec Premium DDR4-2666 UDIMM 1x16GB 2133 CL15?
- Timetec Premium DDR4-2666 UDIMM 1x16GB 2133 CL15 is, on true latency: 14.06 ns against 14.17 ns. A-Tech 8GB DDR4-2400 UDIMM 16GB Kit (2x8GB) runs 2400 MT/s at CL17 and Timetec Premium DDR4-2666 UDIMM 1x16GB 2133 CL15 runs 2133 MT/s at CL15; the CAS numbers alone do not settle it, because they count clock cycles rather than time.
- Which of these two should I buy?
- The site holds no current price for at least one of these, so no buying answer follows: which is worth more turns on what each costs, and that figure is the one missing. On the specifications alone, Timetec Premium DDR4-2666 UDIMM 1x16GB 2133 CL15 is the quicker at 14.06 ns of true latency.