Mobility Radeon HD 3870 and HD Graphics 4000 - video card comparison
Mobility Radeon HD 3870
HD Graphics 4000
Architecture
RV6xx (2007−2010)
Gen. 7 Ivy Bridge (2011−2012)
GPU code name
M88-XT
Ivy Bridge
Market segment
Laptop
Laptop
Release date
March 2008
March 2011
Interface
PCIe 2.0 x16
PCIe 1.0 x16
Boost clock speed
-
1350 MHz
Core clock speed
660 MHz
350 MHz
Floating-point performance
422.4 gflops
33.6 gflops
Manufacturing process technology
55 nm
22 nm
Number of transistors
666 million
1,200 million
Pipelines / CUDA cores
320
16
Power consumption (TDP)
55 Watt
unknown
Texture fill rate
10.56
20.80
Memory type
GDDR3
System Shared
Maximum RAM amount
512 MB
System Shared
Memory bus width
256 Bit
64/128 Bit
Memory clock speed
850 MHz
System Shared
Memory bandwidth
54.4 GB/s
-
Shared memory
-
+
Display Connectors
No outputs
No outputs
DirectX
10.1 (10_1)
11.1 (11_0)
OpenCL
N/A
1.2
OpenGL
3.3
4.0
Shader Model
4.1
5.0
Vulkan
N/A
1.1.80
Quick Sync
-
+