G.Skill Ripjaws X 4GB (2x2GB) DDR3 1866 CL8 vs Kingston KVR21SE15S8/4 4GB (1x4GB) DDR4 2133 CL15
G.Skill Ripjaws X 4GB (2x2GB) DDR3 1866 CL8
2×2 GB · DDR3 · 1866 MHz · CL8Kingston KVR21SE15S8/4 4GB (1x4GB) DDR4 2133 CL15
1×4 GB · DDR4 · 2133 MHz · CL15G.Skill Ripjaws X 4GB (2x2GB) DDR3 1866 CL8 and Kingston KVR21SE15S8/4 4GB (1x4GB) DDR4 2133 CL15 are neck and neck on specs: gear scores 40 and 39.
- Speed: Kingston KVR21SE15S8/4 4GB (1x4GB) DDR4 2133 CL15 leads (2,133 MHz vs 1,866 MHz).
- CAS latency: G.Skill Ripjaws X 4GB (2x2GB) DDR3 1866 CL8 leads (CL8 vs CL15).
- G.Skill Ripjaws X 4GB (2x2GB) DDR3 1866 CL8 has lower true latency (8.6 ns vs 14.1 ns; speed and CL combined).
G.Skill Ripjaws X 4GB (2x2GB) DDR3 1866 CL8
If you care most about cAS latency, true latency.
Kingston KVR21SE15S8/4 4GB (1x4GB) DDR4 2133 CL15
If you care most about speed.
Spec-by-spec comparison
| G.Skill Ripjaws X 4GB (2x2GB) DDR3 1866 CL8 | Kingston KVR21SE15S8/4 4GB (1x4GB) DDR4 2133 CL15 | |
|---|---|---|
| 40 | Gear score | 39 |
| DDR3 | Type | DDR4 |
| 4 GB | Total capacity | 4 GB |
| 2×2 GB | Kit | 1×4 GB |
| 1,866 MHz | Speed | 2,133 MHz |
| CL8 | CAS latency | CL15 |
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 G.Skill Ripjaws X 4GB (2x2GB) DDR3 1866 CL8 or Kingston KVR21SE15S8/4 4GB (1x4GB) DDR4 2133 CL15 better?
G.Skill Ripjaws X 4GB (2x2GB) DDR3 1866 CL8 and Kingston KVR21SE15S8/4 4GB (1x4GB) DDR4 2133 CL15 are neck and neck on specs: gear scores 40 and 39. Speed: Kingston KVR21SE15S8/4 4GB (1x4GB) DDR4 2133 CL15 leads (2,133 MHz vs 1,866 MHz). CAS latency: G.Skill Ripjaws X 4GB (2x2GB) DDR3 1866 CL8 leads (CL8 vs CL15). G.Skill Ripjaws X 4GB (2x2GB) DDR3 1866 CL8 has lower true latency (8.6 ns vs 14.1 ns; speed and CL combined).
Which one is faster?
Speed: Kingston KVR21SE15S8/4 4GB (1x4GB) DDR4 2133 CL15 leads (2,133 MHz vs 1,866 MHz).