Kingston KCP421NS8/4 4GB (1x4GB) DDR4 2133 CL15 vs Kingston KHX1600C10D3B1/8G 8GB (1x8GB) DDR3 1600 CL10
Kingston KCP421NS8/4 4GB (1x4GB) DDR4 2133 CL15
1×4 GB · DDR4 · 2133 MHz · CL15Kingston KHX1600C10D3B1/8G 8GB (1x8GB) DDR3 1600 CL10
1×8 GB · DDR3 · 1600 MHz · CL10Kingston KCP421NS8/4 4GB (1x4GB) DDR4 2133 CL15 and Kingston KHX1600C10D3B1/8G 8GB (1x8GB) DDR3 1600 CL10 are neck and neck on specs: gear scores 39 and 38.
- Total capacity: Kingston KHX1600C10D3B1/8G 8GB (1x8GB) DDR3 1600 CL10 leads (8 GB vs 4 GB).
- Speed: Kingston KCP421NS8/4 4GB (1x4GB) DDR4 2133 CL15 leads (2,133 MHz vs 1,600 MHz).
- CAS latency: Kingston KHX1600C10D3B1/8G 8GB (1x8GB) DDR3 1600 CL10 leads (CL10 vs CL15).
- Kingston KHX1600C10D3B1/8G 8GB (1x8GB) DDR3 1600 CL10 has lower true latency (12.5 ns vs 14.1 ns; speed and CL combined).
Kingston KCP421NS8/4 4GB (1x4GB) DDR4 2133 CL15
If you care most about speed.
Kingston KHX1600C10D3B1/8G 8GB (1x8GB) DDR3 1600 CL10
If you care most about total capacity, cAS latency, true latency.
Spec-by-spec comparison
| Kingston KCP421NS8/4 4GB (1x4GB) DDR4 2133 CL15 | Kingston KHX1600C10D3B1/8G 8GB (1x8GB) DDR3 1600 CL10 | |
|---|---|---|
| 39 | Gear score | 38 |
| DDR4 | Type | DDR3 |
| 4 GB | Total capacity | 8 GB |
| 1×4 GB | Kit | 1×8 GB |
| 2,133 MHz | Speed | 1,600 MHz |
| CL15 | CAS latency | CL10 |
| ≈ $66 | Estimated price | — |
The gear score is computed from specifications only (e.g. for a mouse: weight, sensor, polling rate, connection and release year). It isn’t a lab test and doesn’t measure personal preferences like shape or grip.
Which one adds more to your setup?
The scanner finds your graphics card, CPU, RAM, monitor, mouse and keyboard in under a minute. You get a score out of 100, estimated FPS in games, a bottleneck check and upgrade tips made for you.
FAQ
Is Kingston KCP421NS8/4 4GB (1x4GB) DDR4 2133 CL15 or Kingston KHX1600C10D3B1/8G 8GB (1x8GB) DDR3 1600 CL10 better?
Kingston KCP421NS8/4 4GB (1x4GB) DDR4 2133 CL15 and Kingston KHX1600C10D3B1/8G 8GB (1x8GB) DDR3 1600 CL10 are neck and neck on specs: gear scores 39 and 38. Total capacity: Kingston KHX1600C10D3B1/8G 8GB (1x8GB) DDR3 1600 CL10 leads (8 GB vs 4 GB). Speed: Kingston KCP421NS8/4 4GB (1x4GB) DDR4 2133 CL15 leads (2,133 MHz vs 1,600 MHz). CAS latency: Kingston KHX1600C10D3B1/8G 8GB (1x8GB) DDR3 1600 CL10 leads (CL10 vs CL15).
Which one is faster?
Speed: Kingston KCP421NS8/4 4GB (1x4GB) DDR4 2133 CL15 leads (2,133 MHz vs 1,600 MHz).