Radeon RX 540 and Radeon HD 6990M - video card comparison
Radeon RX 540
Radeon HD 6990M
Architecture
Polaris (2016−2019)
Terascale 2 (2009−2015)
GPU code name
Polaris 12
Blackcomb XTX
Market segment
Laptop
Laptop
Release date
March 2017
July 2011
Interface
PCIe 3.0 x16
MXM-B (3.0)
Supplementary power connectors
1x 6-pin
None
Boost clock speed
1219 MHz
-
Core clock speed
-
715 MHz
Floating-point performance
1,248 gflops
1,601.6 gflops
Manufacturing process technology
14 nm
40 nm
Number of transistors
1,500 million
1,700 million
Pipelines / CUDA cores
512
1120
Power consumption (TDP)
75 Watt
100 Watt
Texture fill rate
39.01
40.04
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
2 GB
Memory bus width
128 Bit
256 Bit
Memory clock speed
6000 MHz
900 MHz
Memory bandwidth
96 GB/s
115.2 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12.0
11.2 (11_0)
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.0
5.0
Vulkan
-
N/A
FreeSync
+
-