Radeon HD 4870 and HD Graphics 2500 - video card comparison
Radeon HD 4870
HD Graphics 2500
Architecture
TeraScale (2005−2013)
Gen. 7 Ivy Bridge (2011−2012)
GPU code name
RV770
Ivy Bridge GT1
Market segment
Desktop
Laptop
Release date
June 2008
April 2012
Interface
PCIe 2.0 x16
PCIe 1.0 x16
Supplementary power connectors
2x 6-pin
-
Boost clock speed
-
1150 MHz
Core clock speed
750 MHz
650 MHz
Floating-point performance
1,200.0 gflops
13.8 gflops
Manufacturing process technology
55 nm
22 nm
Number of transistors
956 million
392 million
Pipelines / CUDA cores
800
6
Power consumption (TDP)
150 Watt
unknown
Texture fill rate
30.00
6.900
Memory type
GDDR5
System Shared
Maximum RAM amount
1 GB
System Shared
Memory bus width
256 Bit
64/128 Bit
Memory clock speed
3600 MHz
System Shared
Memory bandwidth
115.2 GB/s
-
Shared memory
-
+
Display Connectors
2x DVI, 1x S-Video
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