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The BR and L12S are basically on par regarding the cooling of an R9, but only if you run the BR with a 120 fan on top and 92mm below. And that's not an option in the Dancase as far as I know. Also the L12S wouldn't fit anyways (way too high). You may have to undervolt using the BR with only a 92mm fan though, to get the "best" performance out of it. You could still try to to use the L9a, but you'd need to take some time and dial in the power targets.Regarding the R7, you should be fine with an L9a. But also pretty sure there is not much headroom.Here you can see a shootout of some coolers with an i5-8400 (same TDP as the 3700X). But keep an eye on the height of the cooler.[MEDIA=youtube]0XWWPXgyOFE[/MEDIA]IMO the BR should be your go to option, as it was specifically designed for this case.Also you could consider swapping the stock fan with a noctua one, to lower the noise.[MEDIA=youtube]M5C7iDb2Z0I[/MEDIA]
The BR and L12S are basically on par regarding the cooling of an R9, but only if you run the BR with a 120 fan on top and 92mm below. And that's not an option in the Dancase as far as I know. Also the L12S wouldn't fit anyways (way too high). You may have to undervolt using the BR with only a 92mm fan though, to get the "best" performance out of it. You could still try to to use the L9a, but you'd need to take some time and dial in the power targets.
Regarding the R7, you should be fine with an L9a. But also pretty sure there is not much headroom.
Here you can see a shootout of some coolers with an i5-8400 (same TDP as the 3700X). But keep an eye on the height of the cooler.
[MEDIA=youtube]0XWWPXgyOFE[/MEDIA]
IMO the BR should be your go to option, as it was specifically designed for this case.
Also you could consider swapping the stock fan with a noctua one, to lower the noise.
[MEDIA=youtube]M5C7iDb2Z0I[/MEDIA]