GeForce GTX 675M and Radeon HD 7770M - video card comparison
GeForce GTX 675M
Radeon HD 7770M
Architecture
Fermi (2010−2014)
GCN (2011−2017)
GPU code name
N13E-GS1
Chelsea XT
Market segment
Laptop
Laptop
Release date
March 2012
April 2012
Bus support
PCI Express 2.0
-
Interface
MXM-B (3.0)
PCIe 2.0 x16
SLI options
+
-
Core clock speed
620 MHz
675 MHz
CUDA cores
384
-
Floating-point performance
952.3 gflops
691.2 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,950 million
1,500 million
Pipelines / CUDA cores
384
512
Power consumption (TDP)
100 Watt
32 Watt
Texture fill rate
39.7 billion/sec
21.60
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
256bit
128 Bit
Memory clock speed
1500 MHz
4000 MHz
Memory bandwidth
96.0 GB/s
64 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 (11_1)
CUDA
+
-
OpenCL
1.1
1.2
OpenGL
4.5
4.6
Shader Model
5.1
5.1
Vulkan
N/A
1.2.131
Optimus
+
-