Mobility Radeon HD 4870 and GeForce GT 445M - video card comparison
Mobility Radeon HD 4870
GeForce GT 445M
Architecture
Terascale 1 (2008−2010)
Fermi (2010−2014)
GPU code name
M98-XT
N11E-GE
Market segment
Laptop
Laptop
Release date
January 2009
September 2010
Interface
PCIe 2.0 x16
PCIe 2.0 x16
SLI options
-
+
Core clock speed
550 MHz
590 MHz
CUDA cores
-
144
Floating-point performance
880.0 gflops
339.8 gflops
Manufacturing process technology
55 nm
40 nm
Number of transistors
956 million
1,170 million
Pipelines / CUDA cores
800
144
Power consumption (TDP)
-
35 Watt
Texture fill rate
22.00
10.6 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
3 GB
Memory bus width
256 Bit
192 Bit
Memory clock speed
888 MHz
1250 MHz
Memory bandwidth
56.83 GB/s
60.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
10.1 (10_1)
12 API
CUDA
-
+
OpenCL
1.1
1.1
OpenGL
3.3
4.5
Shader Model
4.1
5.1
Vulkan
N/A
N/A