The XFX Radeon RX 6400 SPEEDSTER SWFT105 has 768 shader units and these clock a maximum of 2.32 GHz which results in an FP32 computing power of 3.57 TFLOPS.
The ASRock Radeon RX 6600 Challenger ITX has 1792 shader units and these clock at a maximum of 2.49 GHz and achieve an FP32 computing power of 8.93 TFLOPS.
Quick comparison
In FP32 performance, the ASRock Radeon RX 6600 Challenger ITX is 150 % faster than the XFX Radeon RX 6400 SPEEDSTER SWFT105.
The XFX Radeon RX 6400 SPEEDSTER SWFT105 is equipped with a graphics chip of the RDNA 2 architecture, which has 12 streaming multiprocessors.
The graphics card ASRock Radeon RX 6600 Challenger ITX is based on the RDNA 2 architecture and is equipped with 28 execution units.
Memory
Memory
XFX Radeon RX 6400 SPEEDSTER SWFT105
ASRock Radeon RX 6600 Challenger ITX
Memory Size
4 GB
8 GB
Memory Type
GDDR6
GDDR6
Memory Clock
2.000 GHz
1.750 GHz
Memory Speed
16.0 Gbps
14.0 Gbps
Memory bandwidth
128 GB/s
224 GB/s
Memory Interface
64 bit
128 bit
More information
The XFX Radeon RX 6400 SPEEDSTER SWFT105 is equipped with a 4 GB large GDDR6 graphics memory, which is equipped with 2.000 GHz clocks.
The ASRock Radeon RX 6600 Challenger ITX has a 8 GB large GDDR6 graphics memory and the memory clock is 1.750GHz.
Clock Speeds
Clock Speeds
XFX Radeon RX 6400 SPEEDSTER SWFT105
ASRock Radeon RX 6600 Challenger ITX
Base Clock
1.923 GHz
1.626 GHz
Boost Clock
2.321 GHz
2.491 GHz
Avg (Game) Clock
2.04 GHz
2.04 GHz
Overclocking
Yes
Yes
More information
The XFX Radeon RX 6400 SPEEDSTER SWFT105 has a turbo clock of 2.321 GHz. The turbo frequency of the ASRock Radeon RX 6600 Challenger ITX is 2.491 GHz.
Thermal Design
Thermal Design
XFX Radeon RX 6400 SPEEDSTER SWFT105
ASRock Radeon RX 6600 Challenger ITX
TDP
53 W
132 W
Tjunction max
97 °C
100 °C
PCIe-Power
--
1 x 8-Pin
More information
The XFX Radeon RX 6400 SPEEDSTER SWFT105 has -- connectors through which it is supplied with power. The manufacturer specifies the maximum operating temperature of the graphics card as 97 °C.
The ASRock Radeon RX 6600 Challenger ITX is equipped with a 1 x 8-Pin PCIe power connector that supplies it with power. The maximum operating temperature of the card is 100 °C.
Cooler & Fans
Cooler & Fans
XFX Radeon RX 6400 SPEEDSTER SWFT105
ASRock Radeon RX 6600 Challenger ITX
Fan-Type
Axial
Axial
Fan 1
1 x 50 mm
1 x 100 mm
Cooler-Type
Air cooling
Air cooling
Noise (Idle)
0 dB
0 dB
More information
The graphics processor and graphics memory of the XFX Radeon RX 6400 SPEEDSTER SWFT105 are cooled with a Air cooling.
The ASRock Radeon RX 6600 Challenger ITX is cooled by a Air cooling.
Connectivity
Connectivity
XFX Radeon RX 6400 SPEEDSTER SWFT105
ASRock Radeon RX 6600 Challenger ITX
Max. Displays
2
4
HDCP
2.3
2.3
HDMI
1x HDMI 2.1
1x HDMI 2.1
DisplayPort
1x DP 1.4a
2x DP 1.4
More information
The XFX Radeon RX 6400 SPEEDSTER SWFT105 supports the downward compatible copy protection HDCP in version 2.3.
The ASRock Radeon RX 6600 Challenger ITX supports HDCP in version 2.3 and all previous versions.
Featureset
Featureset
XFX Radeon RX 6400 SPEEDSTER SWFT105
ASRock Radeon RX 6600 Challenger ITX
Max. resolution
7680x4320
7680x4320
DirectX
12_2 (Ultimate)
12_2 (Ultimate)
Raytracing
Yes
Yes
DLSS / FSR
Yes
Yes
LED
No LED lighting
No LED lighting
More information
The XFX Radeon RX 6400 SPEEDSTER SWFT105 supports the DirectX standard from Microsoft in version 12_2 (Ultimate).
The ASRock Radeon RX 6600 Challenger ITX supports Microsoft's DirectX version 12_2 (Ultimate).
Supported Video Codecs
Supported Video Codecs
XFX Radeon RX 6400 SPEEDSTER SWFT105
ASRock Radeon RX 6600 Challenger ITX
h264
Decode / Encode
Decode / Encode
h265 / HEVC
Decode / Encode
Decode / Encode
VP8
Decode / Encode
Decode / Encode
VP9
Decode / Encode
Decode / Encode
AV1
Decode
Decode
More information
This area lists which video codecs can be decoded or encoded by the graphics cards in hardware. As a result, the power consumption can be reduced due to a lower processor load.
Dimensions
Dimensions
XFX Radeon RX 6400 SPEEDSTER SWFT105
ASRock Radeon RX 6600 Challenger ITX
Length
155 mm
179 mm
Height
68 mm
124 mm
Width
15 mm
40 mm
Width (Slots)
1 Slots
2 Slots
SFF-Ready
No
No
More information
The XFX Radeon RX 6400 SPEEDSTER SWFT105 is 15 mm wide and therefore needs the space of 2 PCIe-Slots in the case.
The width of the ASRock Radeon RX 6600 Challenger ITX is 15 mm and thus requires the space of 2 PCIe-Slots in the PC case.
3DMark is a benchmark program that determines the performance of certain components of a computer and then reports the performance as a numerical value.
Cyberpunk 2077 was developed by CD Projekt Red and is based on the development studio's own REDengine 4. Ray tracing is switched off in our benchmarks.
The Last of Us Part One is a game released by Sony in June 2013 exclusively for the Playstation and released for the PC in early 2023. The benchmark values here were determined at high details.
Geekbench 6 is a cross-platform benchmark for main processors, which also carries out 3 different graphics benchmarks and outputs them in the form of a numerical value.
The theoretical computing power of the graphics card with single precision (32 bit) in TFLOPS indicates how many trillion FP32 floating point operations the graphics card (GPU) can perform per second.
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