Mobility Radeon HD 4870 and HD Graphics 4000 - video card comparison
Mobility Radeon HD 4870
HD Graphics 4000
Architecture
Terascale 1 (2008−2010)
Gen. 7 Ivy Bridge (2011−2012)
GPU code name
M98-XT
Ivy Bridge
Market segment
Laptop
Laptop
Release date
January 2009
March 2011
Interface
PCIe 2.0 x16
PCIe 1.0 x16
Boost clock speed
-
1350 MHz
Core clock speed
550 MHz
350 MHz
Floating-point performance
880.0 gflops
33.6 gflops
Manufacturing process technology
55 nm
22 nm
Number of transistors
956 million
1,200 million
Pipelines / CUDA cores
800
16
Power consumption (TDP)
-
unknown
Texture fill rate
22.00
20.80
Memory type
GDDR5
System Shared
Maximum RAM amount
1 GB
System Shared
Memory bus width
256 Bit
64/128 Bit
Memory clock speed
888 MHz
System Shared
Memory bandwidth
56.83 GB/s
-
Shared memory
-
+
Display Connectors
No outputs
No outputs
DirectX
10.1 (10_1)
11.1 (11_0)
OpenCL
1.1
1.2
OpenGL
3.3
4.0
Shader Model
4.1
5.0
Vulkan
N/A
1.1.80
Quick Sync
-
+