Two months ago, AMD launched AMD Radeon RX 6600 XT, The first card to use Navi 23 GPU. Today, AMD introduced its first truly mainstream RX 6000 series graphics card, the Radeon RX 6600. Using the same GPU, but with four CUs (computing units) disabled, turn their clocks down a bit, and you will get RX 6600 non-XT.
Will it be one of them Best graphics card, Or will it be a bit short?Many of these will depend on retail price and availability, because Graphics card price Still swelling, but the supply of RX 6600 XT is better than other RDNA2 graphics cards, so I hope that for gamers, AMD can provide a reasonable number of GPUs for this release.
I talked about Missing vanilla RX 6700 Before the release of Navi 23, the card that was widely circulated before was still MIA. Probably because any incomplete Navi 22 chip can be sold as one of a variety of chips. Mobile RX 6000M series solutionsHowever, AMD did not take the same approach to Navi 23, and while cutting some performance, RX 6600 reduced the power requirement to only 132W and reduced the official starting price to $329-the same price as Nvidia’s RTX 3060, although “only” 8GB VRAM. This is basically the mainstream pricing in today’s market—in fact, it’s lower than what you pay for most actual mainstream GPUs—though we suspect that as long as the GPU is still in short supply, AMD’s partners and various retail stores will increase it. price.
In addition to reducing the number of CUs and reducing the GPU clock-if you look at the game clock, the relatively large 315MHz-AMD also reduced the GDDR6 speed from 16Gbps to 14Gbps. Please note that the “maximum” acceleration clock (technically speaking, the GPU can even exceed the acceleration clock) is much higher than the game clock, so we have to look at its performance in benchmark tests. But in general, we expect the RX 6600 to be 10-25% slower than the RX 6600 XT, depending on whether the game requires more GPU power (theoretically up to 25% slower) or more memory bandwidth (about 12.5% slower). The following is a summary of AMD’s latest RX 6000 series GPUs and their specifications.
|Graphics card||RX 6600||RX 6800 XT||RX 6800||RX 6700 XT||RX 6600 XT|
|architecture||Navigation 23||Navigation 21||Navigation 21||Navigation 22||Navigation 23|
|Process technology||TSMC N7||TSMC N7||TSMC N7||TSMC N7||TSMC N7|
|Mold size (mm^2)||237||519||519||336||237|
|Unlimited cache (MB)||32||128||96||128||32|
|Game clock (MHz)||2044||2250||2105||2424||2359|
|Video memory speed (Gbps)||14||16||16||16||16|
|Video memory (GB)||8||16||16||12||8|
|Video memory bus width||128||256||256||192||128|
|TFLOPS FP32 (boost)||7.3||20.7||16.2||12.4||9.7|
|PCIe slot interface||x8 Gen4||x16 Gen4||x16 Gen4||x16 Gen4||x8 Gen4|
|Launch date||October 21||November 20||November 20||March 21||August 21|
|Launch price||USD 329||649 USD||579 USD||USD 479||USD 379|
Paper specifications do not always match real-world performance, so we have to see how RX 6600 compares with its main competitors-not only RTX 3060 and RX 6600 XT, but also previous generation graphics cards such as RTX 2060, RTX 2060 Super and RX 5600 XT. Considering that this card replaced the previous generation RX 5600 XT, unfortunately, the price of the first generation has risen a lot, but it does not make sense to expect AMD to launch at a price that few people have seen. Similarly, we hope that the supply of RX 6600 cards will actually be considerable, whether it is the first release or in the future.
We have already mentioned the issue of AMD’s game clock and boost clock, and we have used AMD’s game clock for the above TFLOPS numbers. However, given that the boost clock on RDNA2 has changed (ie, RDNA2 GPUs often reach and exceed the boost clock during gaming), it may be better to use the boost clock instead of the game clock to compare performance. If we do this, RX 6600 can provide calculations of approximately 8.9 TFOPS, while RX 6600 XT can provide calculations of 10.6 TFLOPS. This is much lower than the theoretical performance drop of 16% and matches better with the reduced memory bandwidth.
The Navi 23 architecture uses the same general formula as other architectures Big Navi and RDNA2 GPU. It supports DirectX ray tracing (DXR) and implements a complete list of DirectX 12 Ultimate features, including variable rate shading (VRS), grid colorizer, and sampler feedback. The smaller 32MB Infinity Cache on the Navi 23 represents a compromise, mainly in favor of 1080p and 1440p, but mainstream GPUs are usually not used for higher resolutions, so it should be fine.