Radeon HD 5850 and Mobility Radeon HD 4870 - video card comparison
Radeon HD 5850
Mobility Radeon HD 4870
Architecture
Terascale 2 (2009−2015)
Terascale 1 (2008−2010)
GPU code name
Cypress
M98-XT
Market segment
Desktop
Laptop
Release date
September 2009
January 2009
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
-
Core clock speed
725 MHz
550 MHz
Floating-point performance
2,088.0 gflops
880.0 gflops
Manufacturing process technology
40 nm
55 nm
Number of transistors
2,154 million
956 million
Pipelines / CUDA cores
1440
800
Power consumption (TDP)
151 Watt
-
Texture fill rate
52.20
22.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
1 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
2000 MHz
888 MHz
Memory bandwidth
128.0 GB/s
56.83 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
11.2 (11_0)
10.1 (10_1)
OpenCL
1.2
1.1
OpenGL
4.4
3.3
Shader Model
5.0
4.1
Vulkan
N/A
N/A