GeForce GT 540M and Radeon X1900 XT - video card comparison
GeForce GT 540M
Radeon X1900 XT
Architecture
Fermi (2010−2014)
R500 (2005−2007)
GPU code name
N12P-GS
R580
Market segment
Laptop
Desktop
Release date
January 2011
January 2006
Interface
MXM-A (3.0)
PCIe 1.0 x16
Supplementary power connectors
-
1x 6-pin
Core clock speed
672 MHz
625 MHz
CUDA cores
96
-
Floating-point performance
258.05 gflops
-
Manufacturing process technology
40 nm
90 nm
Number of transistors
585 million
384 million
Pipelines / CUDA cores
96
-
Power consumption (TDP)
35 Watt
100 Watt
Texture fill rate
10.8 billion/sec
10.00
Memory type
DDR3
GDDR3
Maximum RAM amount
2 GB
256 MB
Memory bus width
128 Bit
256 Bit
Memory clock speed
900 MHz
1450 MBps
Memory bandwidth
28.8 GB/s
46.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
2x DVI, 1x S-Video
DirectX
12 API
9.0c (9_3)
CUDA
+
-
OpenCL
1.1
N/A
OpenGL
4.5
2.1 (full)
Shader Model5.13.0
Vulkan
N/A
N/A
3D Blu-Ray
+
-
3D Gaming
+
-
Optimus
+
-