Solid 1080p performance, but drops off quickly to higher resolutions •


Closer in performance to the RTX 3060 than to the RTX 3060 Ti.

For nearly six months, Nvidia’s $ 329 / £ 299 RTX 3060 is the only next-gen graphics card targeting 1080p gaming – the most popular monitor resolution and the one that makes up 67% of screens, if the survey on Steam hardware must be believed. Now AMD has its own next-gen 1080p card in the form of the RX 6600 XT, a $ 379 / £ 329 option that costs $ 100 / £ 90 less than the previous, more affordable RDNA 2 graphics card, the RX. 6700 XT.

With a $ 50 / £ 30 premium over the RTX 3060, Team Red will be looking to deliver significantly better performance in most titles, while closing the gap in games that use hardware-accelerated ray tracing – a weakness for AMD this generation. The $ 399 / £ 369 RTX 3060 Ti is also dangerously close to AMD’s new GPU, so we’ll have to see how these two graphics cards stack up as well.

Of course, whether the RX 6600 XT will actually hit the market at $ 379 / £ 329 remains an open question. AMD’s own reference cards tend to sell out in seconds, and custom cards often sell for much higher prices. AMD does not make a reference model RX 6600 XT – we are testing a PowerColor Red Devil card that looks like a more premium offering – so it will be fascinating to see if ordinary people who are not connected to the Discord servers available in stock and Les Twitter accounts will be able to purchase one on launch day at MSRP. Regardless of the truth on the ground, for now we’ll assume that the map will be available at $ 379 – because we need a base to make comparisons!

Looking at the specs, the RX 6600 XT could be quite a contender. It has 32 compute units, compared to 40 on the RX 6700 XT, with similar boost clocks as well. The memory subsystem has been slightly downgraded to 8GB GDDR6 augmented by a 32MB Infinity Cache and running on a 128-bit interface. The Infinity Cache is a bit smaller than on other Big Navi cards – the RX 6700 XT has a 96MB cache and the top cards all come with 128MB – so it will be interesting to see how the newcomer stacks up. to memory-hungry titles and higher resolutions. The last generation RX 5600 XT used a larger 192-bit interface, so AMD must be pretty confident in the performance of ICs. Elsewhere, the RX 6600 XT only uses 160W of power, placing it between the RX 5600 XT (150W) and the RX 5700 (180W). That’s 70W less than the RX 6700 XT, which itself is only 70W below the flagship RX 6900 XT, so it will be fascinating to see how RDNA2 performs in a much tighter power envelope.

The PowerColor Red Devil board we’re looking at is large, with a 2.5-slot design. This allows for a heat sink and thick shroud (~ 5cm) which should allow the RX 6600 XT to have enough thermal headroom to achieve high clock speeds. Approximately 25cm long, it should fit into most enclosures that can accommodate a 2.5-slot card, while its six-pin and eight-pin auxiliary power inputs should also be considered when thinking about compatibility. Given the target wattage of 160W – and the fact that AMD’s “product artistry” on the RX 6600 XT spec page shows a single eight-pin input – we would expect cards with a single auxiliary power input are also available for systems with low power supplies. The aesthetic is complemented by red lighting panels and a red backlit horn pattern on the back of the card – the perfect GPU for playing Doom Eternal.

Like the other RX 6000 series cards, we envision a standard complement of one HDMI 2.1 port and three DisplayPort 1.4 ports; the inclusion of HDMI 2.1 over HDMI 2.0 means there’s finally a consumer AMD card that can make full use of 120Hz 4K TVs – not that the RX 6600 XT is going to hit that frame rate in many titles. All four ports can fit in a single slot, so the remaining half of the I / O rack can be fully dedicated to airflow with devilish cutouts.

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AMD GPU Specifications UC Game clock VRAM Memory interface TDP Price
RX 6900XT 80 2015MHz 16 GB of GDDR6 memory 256-bit IC + 128MB 300W $ 999
RX 6800 XT 72 2015MHz 16 GB of GDDR6 memory 256-bit IC + 128MB 300W $ 649
RX 6800 60 1815MHz 16 GB of GDDR6 memory 256-bit IC + 128MB 250W $ 579
RX 6700 XT 40 2424MHz 12 GB of GDDR6 memory 192 bits + 96MB IC 230W $ 479
RX 6600 XT 32 2359MHz 8 GB of GDDR6 memory 128 bit + 32MB IC 160W $ 379
RX 5700 XT 40 1755MHz 8 GB of GDDR6 memory 256 bits 225W $ 399
RX 5700 36 1625MHz 8 GB of GDDR6 memory 256 bits 180W $ 349
RX 5600 XT 36 1375MHz 6 GB of GDDR6 memory 192 bits 150W $ 279
RX 5500 XT 22 1717MHz 8 GB of GDDR6 memory 128 bits 130W $ 199

Our test bench was unchanged from our review of the RTX 3070 Ti in June, but here’s a quick rundown. We use a Core i9 10900K system because it provided the best gaming performance when the current generation GPUs were released in 2020, supported by an Asus Maximus 13 Hero Z590, G.Skill Trident-Z Royal DDR4 -3600 dual channel motherboard CL16 of memory and a 2TB Samsung 970 Evo Plus NVMe drive from Box. To keep our CPU performance consistent, we locked it down to 5 GHz on all cores and kept it cool with a 240mm Eisbaer Aurora liquid cooler.

Now that you know the principle, the material and our test device, let’s get to the results!

AMD Radeon RX 6600 XT review

  • Material introduction and analysis [This Page]

  • Doom Eternal, Control, Borderlands 3, Shadow of the Tomb Raider – Game Benchmarks Part 1

  • Death Stranding, Far Cry 5, Hitman 2, Assassin’s Creed Odyssey – Game Benchmarks Part 2

  • Metro Exodus, Dirt Rally 2, Assassin’s Creed Unity – Game Benchmarks, Part 3

  • Control, Metro Exodus, Battlefield 5 – RT Game Benchmarks

  • AMD Radeon RX 6600 XT – the verdict of Digital Foundry


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