To do a successful positive pressure setup - which I don't believe is ideal - in there would be:ġx NF-A14 or S12A top intake - that's why there's a filter for the top panel.Ģx NF-S12A top exhaust - remove the top filter A negative pressure setup makes more sense in a case of this caliber. In a case like this, a positive pressure setup may not be ideal due to the major airflow choke point in the front. Psu shroud: minor, but can also be major depending on the gpu model and proximity to the shroud Some have minor impact on airflow, others are major:įilters: major or minor depending on thickness You also have to take into account the 'obstacles'. If you have that, you can tweak your fans' speeds so that the smoke test tells you that you have the pressure balance you need over a range of fan speeds.Ĭlick to expand.There's a little more to it than fan specs - it's not that cut and dry, unfortunately. But most mobos today offer in the options for each fan header a choice to set your own custom fan "curve" of fan speed versus measured temperature, rather than using the pre-set one.
#2017 BEST AIRFLOW CASES MANUAL#
If you do, we can help by looking up its manual for details. You have not told us what mobo - maker and exact model number - you will have. Or, rather than changing actual workloads, you can simulate that by using the options for custom fan "curves" to force the fans to specific speeds and test for the smoke flow patterns. If you want to get very thorough, you can repeat this a different system workloads to force fan speed changes. If the smoke moves rapidly, the imbalance may be too large. If it is draw into the case, it has negative pressure. If the smoke drifts away from the case at modest speed, you have a small positive pressure as you and I would like. With the system running normally, you move that smoke source near case small cracks where air can leak. The tracer test requires a small source of smoke like a cigarette or a smoldering incense stick. I suggest further, IF your mobo has at least two case fan headers, that you group them into the front fans on one, and all the exhaust fans on the other. For a start, I will assume that you configure the various fan headers to do their normal automatic fan speed control using the pre-set fan "curves" provided. Whichever way you go, I suggest you do a simple tracer test when it's all done, and then there is a way to tweak it. Whether you do this or not, you can use the test-and-tweak process below to optimize as you like. This changes exhaust max capacity from 289 to 256 m³/h yielding a slight positive pressure, but that will be reduced by the effect of the front panel filters. Put two of the ULN models at top, and one of the regular models at rear. One way to change the imbalance would be to switch the plan for the exhausts. Anyway, with the filters in place for the intake at front, the imbalance will be more than your numbers suggest because those fans will deliver less intake than their max. On that note, the dust filters supplied with that case for the TOP are optional - you do not need to use them, and most people would not when the top is used for exhaust fans. The most obvious of those is dust filters (and their effects can change as they clog up, so you have to clean from time to time). In fact, it is impossible to predict from fan count only (and their max air flow specs) the pressure balance because various other elements in the air flow paths affect real world performance. I presume you are aiming for slight positive pressure inside to reduce intake of unfiltered air carrying dust. What you plan is reasonable, so I'll add a couple comments and alternatives to consider. White larger squares are 140mm, smaller white squares are 120 mm. Which is the best combination for good airflow and noise if I want to fill all the slots with Noctua case fans? 1x slot in the rear for a 120 mm case fan.
#2017 BEST AIRFLOW CASES PC#
Basically, I'm thinking of changing my PC case to use Cooler Master Silencio S400 case and upgrading my CPU cooler to use Noctua DH-15 for my i9-9900K. I wonder if I can get help on the math of my case fan upgrades.
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