Mobility Radeon HD 4870 X2 and Radeon HD 5770 - video card comparison
Mobility Radeon HD 4870 X2
Radeon HD 5770
Architecture
Terascale 1 (2008−2010)
Terascale 2 (2009−2015)
GPU code name
M98-XT
Juniper
Market segment
Laptop
Desktop
Release date
January 2009
October 2009
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
-
1x 6-pin
Core clock speed
550 MHz
850 MHz
Floating-point performance
2x 880.0 gflops
1,360.0 gflops
Manufacturing process technology
55 nm
40 nm
Number of transistors
956 million
1,040 million
Pipelines / CUDA cores
1600
800
Power consumption (TDP)
-
108 Watt
Texture fill rate
22.00
34.00
Memory type
GDDR3, GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
888 MHz
4800 MHz
Memory bandwidth
89.6 GB/s
76.8 GB/s
Shared memory
-
-
Display Connectors
No outputs
2x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
10.1 (10_1)
11.2 (11_0)
OpenCL
1.1
1.2
OpenGL
3.3
4.4
Shader Model
4.1
5.0
Vulkan
N/A
N/A