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My experience with the Zalman P40 Prism case has been unusually personal. By all standard expectations, it should have annoyed me. Why? Because it’s so close to perfect. It skirts the line of a 10/10 rating – a score I’ve only ever given to one case before – yet its minor flaws are immediately noticeable. Ironically, a 99/100 rating frustrates me more than a 91/100, simply because it falls short by such a tiny margin.
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At the same time, I’m not upset with the P40 Prism – I’m genuinely impressed. It’s one of the few cases I would personally use to build my own gaming PC – not a workstation, but a dedicated gaming setup. The reasons why will become clear as I go on.
TABLE OF CONTENTS:
Video review of Zalman P40 Prism
Drawbacks
Let’s start with the drawbacks. In both color options – black and white – the Zalman P40 Prism comes with just a single Zalman ZM-AF120 fan, which performs reasonably well. It’s connected to the RGB hub at the back, but like all other fans in this case, each must be connected individually. The rear RGB hub only handles RGB signals – there are no 4-pin connectors for PWM control.
Another limitation is the lack of support for 420 mm radiators, and a 360 mm radiator can only be mounted on the side. There’s also no support for 140 mm fans at all. If that’s disappointing, I have two pieces of news for you.
First, you shouldn’t expect a Mid-Tower case – like the P40 Prism – to support a 420 mm radiator. Second, all the other “flaws” are practically erased when you consider the price.
Price and advantages
The Zalman P40 Prism costs less than $100. And that’s for a case I’m tempted to call “three-dimensional panoramic” – simply because it has glass on the top, front, and side. Out of the box, the panels are protected not only with films but also with rubber spacers, which I really appreciate. Yes, there’s a gap between them, but it’s minimized thanks to the angled mounting.
In response to the common concern that “this much glass will turn the case into a sauna,” my answer is simple: look at the metal panel on the right. Notice the continuous perforation – both at the top and bottom.
Check out the perforation at the bottom, over the power supply shroud. You can fit up to nine 120 mm fans here. So while the airflow isn’t perfect, it’s still very good.
Now factor in the ability to switch the PCIe slots from horizontal to vertical, support for graphics cards up to 420 mm, CPU coolers up to 165 mm in height, and power supplies up to 150 mm in length.
And if you think 150 mm is too short for a power supply, let me introduce the be quiet! System Power 11 750W. It offers PCIe 5.1, a quiet fan, and a very reasonable price. Zalman also makes 150 mm PSUs, like the TeraMax II, but I’ve personally tested the System Power 11.
Other specifications
So, what else is notable about the Zalman P40 Prism? The white version looks downright regal. The black model is great too, but the white one is simply stunning. In fact, it’s the version I would personally use to build my PC.
Next, the front I/O is positioned at the bottom – there’s not really a place for it at the top. Overall, it includes a couple of USB-A 3.0 ports, one Type-C, audio jacks, and power and reset buttons. The reset button doubles as the RGB lighting control.
The bottom dust filter isn’t mounted on rails or clips – it’s magnetic. I’ve never seen this before, and it’s so good that I want to see it become standard. And for other manufacturers, I don’t want to hear excuses about price – at around $97, the P40 Prism is essentially a budget-friendly case.
The mounting points for 2.5-inch SSDs and 3.5-inch HDDs aren’t at the bottom, so they don’t interfere with the power supply – they’re positioned at the top and mounted vertically. This design also makes cable management much easier. There are even silicone grommets for cables, so no complaints there. Plus, the case comes with not just stickers and VGA mounts, but also a cloth for cleaning the glass – which, of course, is tempered.
Conclusions
I can’t forgive the Zalman P40 Prism for lacking a proper fan hub, but I can overlook the fact that it comes with only a single included fan and doesn’t support 140 mm models. Why?
Because aside from those minor issues, the Zalman P40 Prism looks and feels exceptionally well-designed. It includes clever features, some even bordering on revolutionary, and overall – it’s a case I’d love to own. Maybe one day it will be mine. And obviously, I’d recommend it to you as well.
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