The Sapphire Nitro+ Radeon RX 6800 has the Navi 21 graphics chip installed, which is based on the RDNA 2 architecture.
The AMD Radeon RX 7900 XT is based on the graphics chip Navi 31, which comes from the RDNA 3 architecture.
Memory
Memory
Sapphire Nitro+ Radeon RX 6800
AMD Radeon RX 7900 XT
Memory Size
16 GB
20 GB
Memory Type
GDDR6
GDDR6
Memory Clock
2.000 GHz
2.500 GHz
Memory Speed
16.0 Gbps
20.0 Gbps
Memory bandwidth
512 GB/s
800 GB/s
Memory Interface
256 bit
320 bit
More information
The graphics memory of the Sapphire Nitro+ Radeon RX 6800 clocks at 2.000 GHz, which corresponds to a speed of 16.0 Gbps.
The graphics memory speed of the AMD Radeon RX 7900 XT is 20.0 Gbps and the clock speed is 2.500 GHz.
Clock Speeds
Clock Speeds
Sapphire Nitro+ Radeon RX 6800
AMD Radeon RX 7900 XT
Base Clock
1.850 GHz
1.500 GHz
Boost Clock
2.190 GHz
2.400 GHz
Avg (Game) Clock
1.98 GHz
2.00 GHz
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
Sapphire Nitro+ Radeon RX 6800
AMD Radeon RX 7900 XT
TDP
250 W
300 W
TDP (up)
285 W
--
Tjunction max
100 °C
97 °C
PCIe-Power
2 x 8-Pin
2 x 8-Pin
More information
The Sapphire Nitro+ Radeon RX 6800 is powered by 2 x 8-Pin connectors. The TDP (Thermal Design Power) of the graphics card is 250 W.
The AMD Radeon RX 7900 XT has 2 x 8-Pin PCIe power connectors that supply it with energy. The manufacturer specifies the TDP of the card as 300 W.
Cooler & Fans
Cooler & Fans
Sapphire Nitro+ Radeon RX 6800
AMD Radeon RX 7900 XT
Fan-Type
Axial
Axial
Fan 1
2 x 100 mm
3 x 90 mm
Fan 2
1 x 90 mm
--
Cooler-Type
Air cooling
Air cooling
Noise (Idle)
0 dB
0 dB
Noise (Load)
37 dB
37 dB
More information
The Sapphire Nitro+ Radeon RX 6800 is equipped with a total of 3 Axial main fans.
The AMD Radeon RX 7900 XT has 3 Axial main fans that cool the GPU and memory.
Connectivity
Connectivity
Sapphire Nitro+ Radeon RX 6800
AMD Radeon RX 7900 XT
Max. Displays
4
4
HDCP
2.3
2.3
HDMI
1x HDMI 2.1
1x HDMI 2.1
DisplayPort
3x DP 1.4a
2x DP 2.1
USB-C
--
1
More information
Up to 4 screens can be operated with the Sapphire Nitro+ Radeon RX 6800.
The AMD Radeon RX 7900 XT supports the operation of a maximum of 4 monitors.
Featureset
Featureset
Sapphire Nitro+ Radeon RX 6800
AMD Radeon RX 7900 XT
Max. resolution
7680x4320
7680x4320
DirectX
12_2 (Ultimate)
12_2 (Ultimate)
Raytracing
Yes
Yes
DLSS / FSR
Yes
Yes
LED
Addressable LED
No LED lighting
More information
With the Sapphire Nitro+ Radeon RX 6800 it is possible to operate a screen with a maximum resolution of up to 7680x4320 pixels.
The maximum supported resolution of the AMD Radeon RX 7900 XT is 7680x4320 pixels.
Supported Video Codecs
Supported Video Codecs
Sapphire Nitro+ Radeon RX 6800
AMD Radeon RX 7900 XT
h264
Decode / Encode
Decode / Encode
h265 / HEVC
Decode / Encode
Decode / Encode
VP8
Decode / Encode
Decode / Encode
VP9
Decode / Encode
Decode / Encode
AV1
Decode
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
Sapphire Nitro+ Radeon RX 6800
AMD Radeon RX 7900 XT
Length
310 mm
276 mm
Height
134 mm
113 mm
Width
55 mm
51 mm
Width (Slots)
3 Slots
3 Slots
SFF-Ready
No
No
More information
The Sapphire Nitro+ Radeon RX 6800 is connected to the system via PCIe 4.0 x 16 lanes and requires 3 PCIe-Slots space in the housing.
The AMD Radeon RX 7900 XT needs the space of 3 PCIe-Slots in the case and has a PCIe 4 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.
Here you can rate the Sapphire Nitro+ Radeon RX 6800 to help other visitors make their purchasing decisions. The average rating is 5.0 stars (3 ratings). Rate now:
Here you can rate the AMD Radeon RX 7900 XT to help other visitors make their purchasing decisions. The average rating is 4.4 stars (20 ratings). Rate now:
