For the XFX Mercury RX 7900 XTX Magnetic Air 24 GB, the manufacturer opens up the really big cutlery box and plays with Lego technology, so to speak. Compared to the MBA card (made by AMD), the Vapor-Chamber works perfectly and does exactly what is expected of it. Even in the most peculiar living and installation situations. In combination with a higher power limit, the clock rate is also very high. Nibbling at the 2.7 GHz mark (or even higher) under full load is charming. Well, I don’t want to spoil too much, but this interpretation of a thick card with replaceable fans even makes you forget about efficiency from time to time. Because, as always, a bit of a crowbar is included, but what the heck…
The full name of the card is XFX Mercury AMD Radeon RX 7900 XTX Magnetic Air Gaming Graphics Card with 24GB GDDR6 RNDA3, but that’s just too long. Let’s better agree on XFX Mercury Radeon RX 7900 XTX Magnetic Air, otherwise the chart graphics will explode again. And speaking of graphics – I was informed shortly before publishing that the card now has to be called Magnetic Air instead of MagAir for licensing reasons. I was able to change the text quickly, and the PDF too. But there was no time left for the complete export of all chart graphics. I therefore ask for your understanding if one or the other reader notices this. It is not a spelling mistake.
The real special feature of this “Limited Edition” is the click system for the three fans. They advertise with: “No tools, no screws, no effort. XFX Magnetic Air enables extremely fast replacement of fans in a graphics card. Makes maintenance easy and simple”. Ok, that works really well and I will go into more detail in the teardown of the cooler. After all, it is THE key feature of this card.
XFX Mercury Radeon RX 7900 XTX Magnetic Air 24 GB
AMD’s Navi 31 GPU has 58 billion transistors and offers up to 61 TFLOPs of single-precision computing power without OC. This GPU also has a chiplet interconnect with 5.3 TB/s. With the 5 nm node from TSMC, Navi 31 GPU has a transistor density increased to 165% compared to Navi 2X. The Radeon RX 7900 XTX offers 96 CUs with a clock speed of 2.27 GHz (boost up to 2.5 GHz) and has a board power of just under 380 watts (Torture up to just over 400 watts) at XFX. In terms of memory, this XTX model also has 24 GB GDDR6 memory clocked at 20 Gbps. This SKU has a 384-bit memory bus and offers a memory bandwidth of 959.2 GB/s.
The new look of the Mercury is well done and XFX now relies on a really thick cooler structure including vapor chamber. More on this in the teardown, because it’s interesting. The usual mounting frames for the RAM and VRM cooling (sandwich) have been dispensed with and everything looks like a single piece. The dark plastic cover looks sleek and timeless and feels very high quality. The card is 34.6 cm long and 13.2 cm high. The thickness of 6.8 cm is not bad either and in the end it is a 3.5-slot design weighing almost 1.9 kilos.
On the top side, we primarily see the three 8-pin sockets for the external power supply. Of course, we don’t have to discuss the bending radii of the power supply connections with AMD, it’s all still really old school, even if three massive cables are really bulky. The XFX lettering is in an LED light panel, but the usual ARGB fireworks at the top and bottom are not there. Thanks for that!
If you turn the 1940 gram card to the rear, you’ll see a massive backplate without the obligatory LED bells and whistles. XFX also integrates a software BIOS switching function again (top right), but I’ll be honest: the default setting is the best and most sensible. XFX doesn’t give this second BIOS its own name, but you don’t really need it. With the two familiar DisplayPort 2.1 ports and two HDMI 2.1 sockets, we have finished the navel-gazing. However, there is no USB Type C connection and the appropriate power supply is also missing on the board.
Overview of the RDNA3 cards – technical data
The RDNA3 cards are quite different, and not just on the outside. However, the card from XFX trumps the reference in terms of clock rate and power and is therefore a real fun card. Inflated OC candidates are of course always a little faster overall, but also significantly thirstier. We will see later that this will also be (somewhat) the case here, because even XFX can’t reinvent good old physics. But you just have to live with it. I’ll come back to this later, of course.
Once again the tabular comparison:
| RX 7900 XTX | RX 7900 XT | |
| Compute units | 96 | 84 |
| AI accelerators | 192 | 168 |
| Ray tracing accelerators | 96 | 84 |
| Memory | 24 GB GDDR6 | 20 GB GDDR6 |
| Memory speed | 20 Gbps | 20 Gbps |
| Memory bus size | 384-bit | 320-bit |
| Game clock speed | 2.3 GHz | 2 GHz |
| Output | DisplayPort 2.1 | DisplayPort 2.1 |
| TBP | 355 W | 315 W |
| MSRP | 1000 USD | 900 USD |
Of course, I don’t want to withhold the other variants with this fan system from you, because the RX 7800 XT with the fan click system will also be reviewed soon. Today I have simply embedded the PDF, which contains an overview of all the new cards. Please browse through it:
MagAir
- 1 - Einführung, technische Daten und Technologie
- 2 - Test Setup
- 3 - Teardown: PCB, Topologie und Komponenten
- 4 - Teardown: Lüftersystem und Kühler
- 5 - Teardown: Material-Analyse
- 6 - Gaming Performance WQHD (2560 x 1440)
- 7 - Gaming Performance Ultra-HD (3840 x 2160)
- 8 - Gaming Performance FSR vs. DLSS
- 9 - Details: Leistungsaufnahme und Lastverteilung
- 10 - Lastspitzen, Kappung und Netzteilempfehlung
- 11 - Temperaturen, Taktraten und Infrarot-Analyse
- 12 - Lüfterkurven und Lautstärke
- 13 - Zusammenfassung und Fazit
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