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be quiet! Dark Rock 4 vs Zalman CNPS20X: Comparison
be quiet! Dark Rock 4 and Zalman CNPS20X separate most on fan count: be quiet! Dark Rock 4 at 1, Zalman CNPS20X at 2, 50% in favour of Zalman CNPS20X. TDP Rating splits them by another 33%, again favouring Zalman CNPS20X. They match on 4 other specifications, including cooler type, heatpipe count and bearing type.
Specs
| Specification |  |  |
|---|---|---|
| Brand | be quiet! | Zalman |
| Cooler Type | Air Tower | Air Tower |
| Series | be quiet! Dark Rock 4 | Zalman CNPS20X |
| Tower Type | Single-Tower | Dual-Tower |
| Model Number | BK021 | CNPS20X |
| Height | 160 mm | 165 mm-3% |
| Socket Compatibility | AMD AM4/AM5, Intel LGA1700/1200/115X/2066/2011-3 | AMD AM5/AM4/AM3+/AM3, Intel LGA1700/1200/115X/2066/2011 |
| Tower Layout | Single-Tower | Dual-Tower |
| Fan Count | 1-50% | 2 |
| TDP Rating | 200 W-33% | 300 W |
| Noise Level | 21.4 dBA | 29 dBA+7.6 dBA |
| RGB Lighting | No | Yes |
| Cooler Weight | 920 g | 1300 g |
| Heatpipe Count | 6 | 6 |
| Fan Size | 135 mm | 140 mm |
| Max Speed | 1400 RPM-7% | 1500 RPM |
| Bearing Type | Fluid Dynamic | Fluid Dynamic |
| PWM Control | Yes | Yes |
| Lighting | None | ARGB |
| Source URL | https://www.bequiet.com/en/cpucooler/1376 | https://www.zalman.com/EN/Product/ProductDetail.do?productSeq=323 |
Price comparison
| Retailer | be quiet! Dark Rock 4 | Zalman CNPS20X |
|---|---|---|
| Amazon | View on Amazon | |
| Newegg | View on Newegg |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Verdict
be quiet! Dark Rock 4
7.9 / 10 Expert Rating
A dependable, genuinely quiet single-tower cooler that's been slightly outclassed by be quiet!'s own newer Dark Rock 5, but still a solid mid-tier pick on sale.
Zalman CNPS20X
7.9 / 10 Expert Rating
An aggressively priced RGB flagship-class dual-tower for builders who want the look without premium-brand cost.