ASRock Radeon RX 6600 XT Phantom Gaming D is the company's top custom-design RX 6600 XT offering. Debuted last week, the RX 6600 XT is designed to bring the full DirectX 12 Ultimate-compliant feature set of the AMD RDNA 2 architecture to the vast majority of gamers who still play at Full HD (1080p) resolution. It's designed to offer AAA gameplay at high-to-maximum settings, as well as esports gameplay at high frame rates. Real-time raytracing gameplay at 1080p is also possible, and you can leverage FidelityFX Supersampling (FSR) to improve performance with minimal costs to image quality.
The RX 6600 XT debuts the tiny new 7 nm Navi 23 silicon to the desktop space, and maxes it out. All 2,048 stream processors spread across 32 RDNA 2 compute units, 32 Ray Accelerators, 128 TMUs, and 64 ROPs are enabled. 8 GB is the standard memory size for the RX 6600 XT. This is, however, a 128-bit wide GDDR6 memory bus. AMD attempted to bolster this by opting for faster 16 Gbps memory chips and deploying 32 MB of Infinity Cache on-die memory, which cushions the memory sub-system.
The ASRock RX 6600 XT Phantom Gaming D is designed to not only get the most performance out of the RX 6600 XT, but also look great when installed in your case, like something from a segment above. Aesthetic touches include a two-tone metal cooler shroud with good ventilation for the aluminium fin-stack heatsink underneath, RGB LED illumination, and a trio of large fans ventilating it; and the fact that the PCB is only two-thirds the length of the card, which means airflow from the third fan flows through the card and out vents on the backplate. ASRock has also given the RX 6600 XT a factory overclock. The company is pricing the card at $500, $120 above AMD MSRP. At the current market conditions, a more realistic price is around $680.
Radeon RX 6600 XT Market Segment Analysis
Price
Cores
ROPs
Core Clock
Boost Clock
Memory Clock
GPU
Transistors
Memory
RX 5600 XT
$500
2304
64
1375 MHz
1560 MHz
1500 MHz
Navi 10
10300M
6 GB, GDDR6, 192-bit
RTX 2060
$500
1920
48
1365 MHz
1680 MHz
1750 MHz
TU106
10800M
6 GB, GDDR6, 192-bit
RX 5700
$750
2304
64
1465 MHz
1625 MHz
1750 MHz
Navi 10
10300M
8 GB, GDDR6, 256-bit
RTX 2060 Super
$650
2176
64
1470 MHz
1650 MHz
1750 MHz
TU106
10800M
8 GB, GDDR6, 256-bit
RX Vega 64
$600
4096
64
1247 MHz
1546 MHz
953 MHz
Vega 10
12500M
8 GB, HBM2, 2048-bit
RX 5700 XT
$800
2560
64
1605 MHz
1755 MHz
1750 MHz
Navi 10
10300M
8 GB, GDDR6, 256-bit
RTX 2070
$650
2304
64
1410 MHz
1620 MHz
1750 MHz
TU106
10800M
8 GB, GDDR6, 256-bit
RTX 3060
$550
3584
48
1320 MHz
1777 MHz
1875 MHz
GA106
13250M
12 GB, GDDR6, 192-bit
RTX 2070 Super
$700
2560
64
1605 MHz
1770 MHz
1750 MHz
TU104
13600M
8 GB, GDDR6, 256-bit
Radeon VII
$800
3840
64
1400 MHz
1800 MHz
1000 MHz
Vega 20
13230M
16 GB, HBM2, 4096-bit
RX 6600 XT
$650 MSRP: $380
2048
64
2359 MHz
2589 MHz
2000 MHz
Navi 23
11060M
8 GB, GDDR6, 128-bit
ASRock RX 6600 XT Phantom Gaming
$680 MSRP: $500
2048
64
2428 MHz
2607 MHz
2000 MHz
Navi 23
11060M
8 GB, GDDR6, 128-bit
RTX 2080
$750
2944
64
1515 MHz
1710 MHz
1750 MHz
TU104
13600M
8 GB, GDDR6, 256-bit
RTX 2080 Super
$800
3072
64
1650 MHz
1815 MHz
1940 MHz
TU104
13600M
8 GB, GDDR6, 256-bit
RTX 3060 Ti
$700
4864
80
1410 MHz
1665 MHz
1750 MHz
GA104
17400M
8 GB, GDDR6, 256-bit
RX 6700 XT
$770
2560
64
2424 MHz
2581 MHz
2000 MHz
Navi 22
17200M
12 GB, GDDR6, 192-bit
RTX 2080 Ti
$1100
4352
88
1350 MHz
1545 MHz
1750 MHz
TU102
18600M
11 GB, GDDR6, 352-bit
RTX 3070
$1000
5888
96
1500 MHz
1725 MHz
1750 MHz
GA104
17400M
8 GB, GDDR6, 256-bit
RTX 3070 Ti
$1100
6144
96
1575 MHz
1770 MHz
1188 MHz
GA104
17400M
8 GB, GDDR6X, 256-bit
RX 6800
$1300
3840
96
1815 MHz
2105 MHz
2000 MHz
Navi 21
26800M
16 GB, GDDR6, 256-bit
Packaging
The Card
The ASRock RX 6600 XT Phantom Gaming D uses a mostly black design with red highlights. On the back, you'll find a high-quality metal backplate with cutouts to let some airflow through.
Dimensions of the card are 30.0 x 13.0 cm, and it weighs 899 g.
Installation requires three slots in your system. The card is only slightly thicker than the PCIe slot cover, but that still makes it a triple-slot card. That said, it should fit just fine if you have a very small card next to it, like a tiny sound card.
Display connectivity includes three standard DisplayPort 1.4 and one HDMI 2.1. Display and media capabilities are identical to the rest of the RDNA 2 family.
The card has one 8-pin power input. This configuration is rated for up to 225 W of power draw.
The AMD Radeon RX 6600 series doesn't support multi-GPU.
Teardown
The heatsink provides cooling not only for the GPU, but the VRM circuitry and memory chips, too. The thermal pads for the memory are 1.0 mm thick, and those on the VRM are 1.5 mm thick.
The backplate is made out of metal and protects the card against damage during installation and handling. The thermal pads on the backplate are 2.5 mm thick.
High-resolution PCB Pictures
These pictures are for the convenience of volt modders and people who would like to see all the finer details on the PCB. Feel free to link back to us and use these in your articles, videos or forum posts.
High-res versions are also available (front, back).