GeForce GTX 680M and T400 - video card comparison
Passmark - benchmark score GeForce GTX 680M vs T400
GeForce GTX 680M
3312
T400
3739
GeForce GTX 680M
T400
Architecture
Kepler (2012−2018)
Turing (2018−2021)
GPU code name
N13E-GTX
TU117
Market segment
Laptop
Desktop
Release date
June 2012
May 2021
Bus support
PCI Express 3.0
-
Interface
MXM-B (3.0)
PCIe 3.0 x16
Supplementary power connectors
None
None
SLI options
+
-
Boost clock speed
758 MHz
1425 MHz
Core clock speed
720 MHz
-
CUDA cores
1344
-
Floating-point performance
2,038 gflops
-
Manufacturing process technology
28 nm
12 nm
Number of transistors
3,540 million
4,700 million
Pipelines / CUDA cores
1344
384
Power consumption (TDP)
100 Watt
30 Watt
Texture fill rate
80.6 billion/sec
34.20
Memory type
GDDR5
GDDR6
Maximum RAM amount
4 GB
2 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1800 MHz
10 GB/s
Memory bandwidth
115.2 GB/s
80 GB/s
Shared memory
-
-
Display Connectors
No outputs
3x mini-DisplayPort
DirectX
12 API
12 (12_1)
CUDA
+
7.5
OpenCL
1.1
3.0
OpenGL
4.5
4.6
Shader Model
5.1
6.6
Vulkan
1.1.126
1.2
Optimus
+
-