Radeon HD 7970 and Radeon RX 540 - video card comparison
Passmark - benchmark score Radeon HD 7970 vs Radeon RX 540
Radeon HD 7970
5405
Radeon RX 540
2872
Radeon HD 7970
Radeon RX 540
Architecture
GCN (2011−2017)
Polaris (2016−2019)
GPU code name
Tahiti XT
Polaris 12
Market segment
Desktop
Laptop
Release date
December 2011
March 2017
Bus support
PCIe 2.1 x16
-
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin + 1x 8-pin
1x 6-pin
Boost clock speed
925 MHz
1219 MHz
Floating-point performance
3,789 gflops
1,248 gflops
Manufacturing process technology
28 nm
14 nm
Number of transistors
4,313 million
1,500 million
Pipelines / CUDA cores
2048
512
Power consumption (TDP)
300 Watt
75 Watt
Texture fill rate
118.4
39.01
Memory type
GDDR5
GDDR5
Maximum RAM amount
6 GB
4 GB
Memory bus width
384 Bit
128 Bit
Memory clock speed
1375 MHz
6000 MHz
Memory bandwidth
264 GB/s
96 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
+
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 11
12.0
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.0
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
+
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-