The SAPPHIRE PURE Radeon RX 7900 GRE 16GB has 5120 shader units and these clock at a maximum of 2.33 GHz and achieve an FP32 computing power of 47.78 TFLOPS.
Quick comparison
In FP32 performance, the SAPPHIRE PURE Radeon RX 7900 GRE 16GB is 130 % faster than the AMD Radeon RX 6800 XT.
AMD Radeon RX 6800 XTSAPPHIRE PURE Radeon RX 7900 GRE 16GB
The AMD Radeon RX 6800 XT is equipped with a graphics chip of the RDNA 2 architecture, which has 72 streaming multiprocessors.
The graphics card SAPPHIRE PURE Radeon RX 7900 GRE 16GB is based on the RDNA 3 architecture and is equipped with 80 execution units.
Memory
Memory
AMD Radeon RX 6800 XT
SAPPHIRE PURE Radeon RX 7900 GRE 16GB
Memory Size
16 GB
16 GB
Memory Type
GDDR6
GDDR6
Memory Clock
2.000 GHz
2.250 GHz
Memory Speed
16.0 Gbps
18.0 Gbps
Memory bandwidth
512 GB/s
576 GB/s
Memory Interface
256 bit
256 bit
More information
The AMD Radeon RX 6800 XT is equipped with a 16 GB large GDDR6 graphics memory, which is equipped with 2.000 GHz clocks.
The SAPPHIRE PURE Radeon RX 7900 GRE 16GB has a 16 GB large GDDR6 graphics memory and the memory clock is 2.250GHz.
Clock Speeds
Clock Speeds
AMD Radeon RX 6800 XT
SAPPHIRE PURE Radeon RX 7900 GRE 16GB
Base Clock
1.825 GHz
1.287 GHz
Boost Clock
2.250 GHz
2.333 GHz
Avg (Game) Clock
2.02 GHz
1.97 GHz
Overclocking
Yes
Yes
More information
The AMD Radeon RX 6800 XT has a turbo clock of 2.250 GHz. The turbo frequency of the SAPPHIRE PURE Radeon RX 7900 GRE 16GB is 2.333 GHz.
Thermal Design
Thermal Design
AMD Radeon RX 6800 XT
SAPPHIRE PURE Radeon RX 7900 GRE 16GB
TDP
300 W
275 W
TDP (up)
345 W
--
Tjunction max
100 °C
97 °C
PCIe-Power
2 x 8-Pin
2 x 8-Pin
More information
The AMD Radeon RX 6800 XT has 2 x 8-Pin connectors through which it is supplied with power. The manufacturer specifies the maximum operating temperature of the graphics card as 100 °C.
The SAPPHIRE PURE Radeon RX 7900 GRE 16GB is equipped with a 2 x 8-Pin PCIe power connector that supplies it with power. The maximum operating temperature of the card is 97 °C.
Cooler & Fans
Cooler & Fans
AMD Radeon RX 6800 XT
SAPPHIRE PURE Radeon RX 7900 GRE 16GB
Fan-Type
Axial
Axial
Fan 1
3 x 80 mm
3 x 100 mm
Cooler-Type
Air cooling
Air cooling
Noise (Idle)
0 dB
0 dB
Noise (Load)
37 dB
--
More information
The graphics processor and graphics memory of the AMD Radeon RX 6800 XT are cooled with a Air cooling.
The SAPPHIRE PURE Radeon RX 7900 GRE 16GB is cooled by a Air cooling.
Connectivity
Connectivity
AMD Radeon RX 6800 XT
SAPPHIRE PURE Radeon RX 7900 GRE 16GB
Max. Displays
4
4
HDCP
2.3
2.3
HDMI
1x HDMI 2.1
2x HDMI 2.1
DisplayPort
2x DP 1.4a
2x DP 2.1
USB-C
1
--
More information
The AMD Radeon RX 6800 XT supports the downward compatible copy protection HDCP in version 2.3.
The SAPPHIRE PURE Radeon RX 7900 GRE 16GB supports HDCP in version 2.3 and all previous versions.
Featureset
Featureset
AMD Radeon RX 6800 XT
SAPPHIRE PURE Radeon RX 7900 GRE 16GB
Max. resolution
7680x4320
7680x4320
DirectX
12_2 (Ultimate)
12_2 (Ultimate)
Raytracing
Yes
Yes
DLSS / FSR
Yes
Yes
LED
Non addressable LED
Addressable LED
More information
The AMD Radeon RX 6800 XT supports the DirectX standard from Microsoft in version 12_2 (Ultimate).
The SAPPHIRE PURE Radeon RX 7900 GRE 16GB supports Microsoft's DirectX version 12_2 (Ultimate).
Supported Video Codecs
Supported Video Codecs
AMD Radeon RX 6800 XT
SAPPHIRE PURE Radeon RX 7900 GRE 16GB
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
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
AMD Radeon RX 6800 XT
SAPPHIRE PURE Radeon RX 7900 GRE 16GB
Length
270 mm
320 mm
Height
120 mm
129 mm
Width
--
53 mm
Width (Slots)
3 Slots
3 Slots
Weight
1,503 g
--
SFF-Ready
No
No
More information
The AMD Radeon RX 6800 XT is -- wide and therefore needs the space of 3 PCIe-Slots in the case.
The width of the SAPPHIRE PURE Radeon RX 7900 GRE 16GB is -- and thus requires the space of 3 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.
Time Spy Extreme Graphics score SAPPHIRE PURE Radeon RX 7900 GRE 16GB +12.4 %
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.
3840x2160 (2160p) SAPPHIRE PURE Radeon RX 7900 GRE 16GB +31.3 %
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.
Geekbench 6 - OpenCL SAPPHIRE PURE Radeon RX 7900 GRE 16GB +8.2 %
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.
FP32 (TFLOPS) SAPPHIRE PURE Radeon RX 7900 GRE 16GB +130.4 %
Here you can rate the AMD Radeon RX 6800 XT to help other visitors make their purchasing decisions. The average rating is 4.2 stars (23 ratings). Rate now:
Here you can rate the SAPPHIRE PURE Radeon RX 7900 GRE 16GB to help other visitors make their purchasing decisions. The average rating is 5.0 stars (5 ratings). Rate now:
