GeForce GTX 680M and GeForce 256 SDR - video card comparison
GeForce GTX 680M
GeForce 256 SDR
Architecture
Kepler (2012−2018)
Celsius (1999−2005)
GPU code name
N13E-GTX
NV10 A3
Market segment
Laptop
Desktop
Release date
June 2012
October 1999
Bus support
PCI Express 3.0
-
Interface
MXM-B (3.0)
AGP 4x
Supplementary power connectors
None
None
SLI options
+
-
Boost clock speed
758 MHz
-
Core clock speed
720 MHz
120 MHz
CUDA cores
1344
-
Floating-point performance
2,038 gflops
-
Manufacturing process technology
28 nm
220 nm
Number of transistors
3,540 million
17 million
Pipelines / CUDA cores
1344
-
Power consumption (TDP)
100 Watt
-
Texture fill rate
80.6 billion/sec
0.48
Memory type
GDDR5
SDR
Maximum RAM amount
4 GB
32 MB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1800 MHz
143 MHz
Memory bandwidth
115.2 GB/s
1.144 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x VGA
DirectX
12 API
7.0
CUDA
+
-
OpenCL
1.1
N/A
OpenGL
4.5
1.2
Shader Model
5.1
-
Vulkan
1.1.126
N/A
Optimus
+
-