AMD has launched its latest 1080p gaming card, the RX 6600 XT. Compared to the popular RX 5600 XT card of the previous generation, the new model has considerably more computing power with 9.6 teraflops of RDNA 2 performance and 8GB of GDDR6 RAM.
The RX 6600 XT features 32 computing units, 8 GB of GDDR6 RAM, a 2359 MHz base clock, a 2589 MHz boost clock, and absorbs 160W of power with a single 8-pin power connector. For comparison, the RX 6900 XT has 80 computing units, while the RX 6700 XT offers 40 computing units.
AMD has also decided to limit the bandwidth of the PCIe bus with the RX 6600 XT to Gen 4 x8, as opposed to the Gen 4 x16 used on the already released RX 6000 series GPUs. AMD states that it "does not expect workloads to require more PCIe bandwidth than is available on the 6600 XT". A PCIe 4.0 x8 connection actually offers the same bandwidth as a PCIe 3.0 x16.
Gaming Performance
AMD calls the RX 6600 XT a "1080p beast", because it claims that this card will perform better than an Nvidia RTX 3060 12GB at 1080p by about 15%, promising to be able to run AAA titles like Battlefield 5 or Cyberpunk 2077 at high frame rates with maximum settings at 1080p.
The new RX 6600 XT also offers a big improvement over AMD's RX 5000 series cards, delivering performance of 1.4 times or more FPS compared to the RX 5600 XT and RX 5700 for titles like Assassin's Creed Valhalla and Doom Eternal, and 2.5 times higher than a GTX 1060.
The tests were performed by enabling Resizable Bar and Smart Access Memory features.
Comparison with the AMD Radeon RX 6000 lineup
RX 6900 XT LC | RX 6800 XT | RX 6700 XT | RX 6600 XT | |
---|---|---|---|---|
GPU | Navi 21 XTXH | Navi 21 XT | Navi 22 XT | Navi 23 XT |
Cores |
5120
|
3840
|
2560
|
2048
|
Infinity Cache |
128 MB
|
128 MB
|
96 MB
|
32 MB
|
Game Clock |
2250 MHz
|
2015 MHz
|
2424 MHz
|
2359 MHz
|
Boost Clock |
2435 MHz
|
2105 MHz
|
2581 MHz
|
2589 MHz
|
Memory Clock |
18 Gbps
|
16 Gbps
|
16 Gbps
|
16 Gbps
|
Memory |
16 GB GDDR6
|
16 GB GDDR6
|
12 GB GDDR6
|
8 GB GDDR6
|
Memory Bus |
256-bit
|
256-bit
|
192-bit
|
128-bit
|
Bandwidth |
576 GB/s
|
512 GB/s
|
384 GB/s
|
256 GB/s
|
TDP |
330W
|
250W
|
230W
|
160W
|
MSRP | OEM |
579 USD
|
479 USD
|
379 USD
|
Release Date | June 2021 | November 2020 | March 2021 | August 2021 |
The RX 6600 XT will be available from August 11th with an MSRP of $375. There will be no reference graphics cards from AMD for the RX 6600 XT, instead the design and shipping work will be delegated to its partners, including ASRock, Asus, Biostar, Gigabyte, MSI, PowerColor, Sapphire and XFX.
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