GeForce GT 555M and Mobility Radeon HD 3870 - video card comparison
GeForce GT 555M
Mobility Radeon HD 3870
Architecture
Fermi (2010−2014)
RV6xx (2007−2010)
GPU code name
N12E-GE-B
M88-XT
Market segment
Laptop
Laptop
Release date
January 2011
March 2008
Bus support
PCI Express 2.0
-
Interface
PCIe 2.0 x16
PCIe 2.0 x16
SLI options
+
-
Boost clock speed
753 MHz
-
Core clock speed
Up to 753 MHz
660 MHz
CUDA cores
Up to 144
-
Floating-point performance
388.8 gflops
422.4 gflops
Manufacturing process technology
40 nm
55 nm
Number of transistors
1,170 million
666 million
Pipelines / CUDA cores
144
320
Power consumption (TDP)
35 Watt
55 Watt
Texture fill rate
Up to 16.2 billion/sec
10.56
Memory type
DDR3\DDR5
GDDR3
Maximum RAM amount
3 GB
512 MB
Memory bus width
Up to 192 bit/128 Bit
256 Bit
Memory clock speed
Up to 1569 MHz
850 MHz
Memory bandwidth
Up to 50.2 GB/s
54.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 API
10.1 (10_1)
CUDA
+
-
OpenCL
1.1
N/A
OpenGL
4.5
3.3
Shader Model
5.1
4.1
Vulkan
N/A
N/A
3D Blu-Ray
+
-
3D Gaming
+
-
Optimus
+
-