GeForce GTX 650 and Radeon X1900 XT - video card comparison
GeForce GTX 650
Radeon X1900 XT
Architecture
Kepler (2012−2018)
R500 (2005−2007)
GPU code name
GK107
R580
Market segment
Desktop
Desktop
Release date
September 2012
January 2006
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 1.0 x16
Supplementary power connectors
One 6-pin
1x 6-pin
Core clock speed
1058 MHz
625 MHz
CUDA cores
384
-
Floating-point performance
812.5 gflops
-
Manufacturing process technology
28 nm
90 nm
Number of transistors
1,270 million
384 million
Pipelines / CUDA cores
384
-
Power consumption (TDP)
64 Watt
100 Watt
Texture fill rate
33.9 billion/sec
10.00
Memory type
GDDR5
GDDR3
Maximum RAM amount
2 GB
256 MB
Memory bus width
128-bit GDDR5
256 Bit
Memory clock speed
5.0 GB/s
1450 MBps
Memory bandwidth
80.0 GB/s
46.4 GB/s
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One Mini HDMI
2x DVI, 1x S-Video
Multi monitor support
4 displays
-
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
9.0c (9_3)
CUDA
+
-
OpenCL
1.2
N/A
OpenGL
4.3
2.1 (full)
Shader Model5.13.0
Vulkan
1.1.126
N/A
3D Blu-Ray
+
-
3D Gaming
+
-
3D Vision
+
-