Radeon HD 6790 and GeForce GT 540M - video card comparison
Passmark - benchmark score Radeon HD 6790 vs GeForce GT 540M
Radeon HD 6790
1664
GeForce GT 540M
493
Radeon HD 6790
GeForce GT 540M
Architecture
Terascale 2 (2009−2015)
Fermi (2010−2014)
GPU code name
Barts
N12P-GS
Market segment
Desktop
Laptop
Release date
April 2011
January 2011
Interface
PCIe 2.0 x16
MXM-A (3.0)
Supplementary power connectors
2x 6-pin
-
Core clock speed
840 MHz
672 MHz
CUDA cores
-
96
Floating-point performance
1,344.0 gflops
258.05 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
1,700 million
585 million
Pipelines / CUDA cores
800
96
Power consumption (TDP)
150 Watt
35 Watt
Texture fill rate
33.60
10.8 billion/sec
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
1050 MHz
900 MHz
Memory bandwidth
134.4 GB/s
28.8 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
11.2 (11_0)
12 API
CUDA
-
+
OpenCL
1.2
1.1
OpenGL
4.4
4.5
Shader Model
5.0
5.1
Vulkan
N/A
N/A
3D Blu-Ray
-
+
3D Gaming
-
+
Optimus
-
+