Radeon HD 7970 and Radeon RX 6800 XT - video card comparison
Passmark - benchmark score Radeon HD 7970 vs Radeon RX 6800 XT
Radeon HD 7970
5405
Radeon RX 6800 XT
25788
Radeon HD 7970
Radeon RX 6800 XT
Architecture
GCN (2011−2017)
Navi / RDNA2 (2020−2022)
GPU code name
Tahiti XT
Navi 21
Market segment
Desktop
Desktop
Release date
December 2011
November 2020
Bus support
PCIe 2.1 x16
-
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Supplementary power connectors
1x 6-pin + 1x 8-pin
2x 8-pin
Boost clock speed
925 MHz
2250 MHz
Core clock speed
-
1825 MHz
Floating-point performance
3,789 gflops
-
Manufacturing process technology
28 nm
7 nm
Number of transistors
4,313 million
26,800 million
Pipelines / CUDA cores
2048
4608
Power consumption (TDP)
300 Watt
300 Watt
Texture fill rate
118.4
648.0
Memory type
GDDR5
GDDR6
Maximum RAM amount
6 GB
16 GB
Memory bus width
384 Bit
256 Bit
Memory clock speed
1375 MHz
16000 MHz
Memory bandwidth
264 GB/s
512.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x HDMI, 2x DisplayPort, 1x USB Type-C
Eyefinity
+
-
HDMI
+
+
DisplayPort support
-
-
DirectX
DirectX® 11
12 Ultimate (12_2)
Mantle
-
-
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.5
Vulkan
-
1.2
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-