GeForce GTX 280M and Mobility Radeon HD 3870 - video card comparison
GeForce GTX 280M
Mobility Radeon HD 3870
Architecture
G9x (2007−2010)
RV6xx (2007−2010)
GPU code name
N10E-GTX
M88-XT
Market segment
Laptop
Laptop
Release date
March 2009
March 2008
Bus support
PCI-E 2.0
-
Interface
MXM-IV
PCIe 2.0 x16
SLI options
+
-
MXM Type
MXM 3.0 Type-B
-
Core clock speed
585 MHz
660 MHz
CUDA cores
128
-
Floating-point performance
374.5 gflops
422.4 gflops
Gigaflops
562
-
Manufacturing process technology
55 nm
55 nm
Number of transistors
754 million
666 million
Pipelines / CUDA cores
128
320
Power consumption (TDP)
75 Watt
55 Watt
Texture fill rate
38 billion/sec
10.56
Memory type
GDDR3
GDDR3
Maximum RAM amount
1 GB
512 MB
Memory bus width
256 Bit
256 Bit
Memory clock speed
Up to 950 MHz
850 MHz
Memory bandwidth
61 GB/s
54.4 GB/s
Shared memory
-
-
Display Connectors
HDMIDual Link DVISingle Link DVIDisplayPortLVDSVGA
No outputs
HDMI
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
S/PDIF
-
DirectX
11.1 (10_0)
10.1 (10_1)
CUDA
+
-
OpenCL
1.1
N/A
OpenGL
2.1
3.3
Shader Model
4.0
4.1
Vulkan
N/A
N/A
Power management
8.0
-