The Gainward GeForce RTX 5080 Phoenix GS is based on the NVIDIA GeForce RTX 5080 (Blackwell) and has 16 GB GDDR7 graphics memory with a bandwidth of 960 GB/s.
Quick comparison
In FP32 performance, the Gainward GeForce RTX 5080 Phoenix GS is 12 % faster than the AMD Radeon RX 7900 XT.
The AMD Radeon RX 7900 XT has the Navi 31 graphics chip installed, which is based on the RDNA 3 architecture.
The Gainward GeForce RTX 5080 Phoenix GS is based on the graphics chip GB203-400-A1, which comes from the Blackwell architecture.
Memory
Memory
AMD Radeon RX 7900 XT
Gainward GeForce RTX 5080 Phoenix GS
Memory Size
20 GB
16 GB
Memory Type
GDDR6
GDDR7
Memory Clock
2.500 GHz
1.875 GHz
Memory Speed
20.0 Gbps
30.0 Gbps
Memory bandwidth
800 GB/s
960 GB/s
Memory Interface
320 bit
256 bit
More information
The graphics memory of the AMD Radeon RX 7900 XT clocks at 2.500 GHz, which corresponds to a speed of 20.0 Gbps.
The graphics memory speed of the Gainward GeForce RTX 5080 Phoenix GS is 30.0 Gbps and the clock speed is 1.875 GHz.
Clock Speeds
Clock Speeds
AMD Radeon RX 7900 XT
Gainward GeForce RTX 5080 Phoenix GS
Base Clock
1.500 GHz
2.295 GHz
Boost Clock
2.400 GHz
2.700 GHz
Avg (Game) Clock
2.00 GHz
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Overclocking
Yes
Yes
More information
The clock frequency of a graphics card determines the speed in connection with the graphics architecture.
Thermal Design
Thermal Design
AMD Radeon RX 7900 XT
Gainward GeForce RTX 5080 Phoenix GS
TDP
300 W
360 W
Tjunction max
97 °C
88 °C
PCIe-Power
2 x 8-Pin
1 x 16-Pin
More information
The AMD Radeon RX 7900 XT is powered by 2 x 8-Pin connectors. The TDP (Thermal Design Power) of the graphics card is 300 W.
The Gainward GeForce RTX 5080 Phoenix GS has 1 x 16-Pin PCIe power connectors that supply it with energy. The manufacturer specifies the TDP of the card as 360 W.
Cooler & Fans
Cooler & Fans
AMD Radeon RX 7900 XT
Gainward GeForce RTX 5080 Phoenix GS
Fan-Type
Axial
Axial
Fan 1
3 x 90 mm
3 x 100 mm
Cooler-Type
Air cooling
Air cooling
Noise (Idle)
0 dB
0 dB
Noise (Load)
37 dB
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More information
The AMD Radeon RX 7900 XT is equipped with a total of 3 Axial main fans.
The Gainward GeForce RTX 5080 Phoenix GS has 3 Axial main fans that cool the GPU and memory.
Connectivity
Connectivity
AMD Radeon RX 7900 XT
Gainward GeForce RTX 5080 Phoenix GS
Max. Displays
4
4
HDCP
2.3
2.3
HDMI
1x HDMI 2.1
1x HDMI 2.1b
DisplayPort
2x DP 2.1
3x DP 2.1b
USB-C
1
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More information
Up to 4 screens can be operated with the AMD Radeon RX 7900 XT.
The Gainward GeForce RTX 5080 Phoenix GS supports the operation of a maximum of 4 monitors.
Featureset
Featureset
AMD Radeon RX 7900 XT
Gainward GeForce RTX 5080 Phoenix GS
Max. resolution
7680x4320
7680x4320
DirectX
12_2 (Ultimate)
12_2 (Ultimate)
Raytracing
Yes
Yes
DLSS / FSR
Yes
Yes
LED
No LED lighting
Addressable LED
More information
With the AMD Radeon RX 7900 XT it is possible to operate a screen with a maximum resolution of up to 7680x4320 pixels.
The maximum supported resolution of the Gainward GeForce RTX 5080 Phoenix GS is 7680x4320 pixels.
Supported Video Codecs
Supported Video Codecs
AMD Radeon RX 7900 XT
Gainward GeForce RTX 5080 Phoenix GS
h264
Decode / Encode
Decode / Encode
h265 / HEVC
Decode / Encode
Decode / Encode
VP8
Decode / Encode
Decode / Encode
VP9
Decode / Encode
Decode / Encode
AV1
Decode / Encode
Decode / Encode
More information
The support and acceleration of certain video codecs can have a positive impact on the lower energy consumption and less waste heat from the graphics card.
Dimensions
Dimensions
AMD Radeon RX 7900 XT
Gainward GeForce RTX 5080 Phoenix GS
Length
276 mm
332 mm
Height
113 mm
133 mm
Width
51 mm
60 mm
Width (Slots)
3 Slots
3 Slots
SFF-Ready
No
No
More information
The AMD Radeon RX 7900 XT is connected to the system via PCIe 4 x 16 lanes and requires 3 PCIe-Slots space in the housing.
The Gainward GeForce RTX 5080 Phoenix GS needs the space of 3 PCIe-Slots in the case and has a PCIe 5 x 16 Lanes interface.
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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