Radeon HD 7870 and Radeon X1650 GT - video card comparison
Radeon HD 7870
Radeon X1650 GT
Architecture
GCN (2011−2017)
R500 (2005−2007)
GPU code name
Pitcairn XT
RV560
Market segment
Desktop
Desktop
Release date
March 2012
May 2007
Interface
PCIe 3.0 x16
PCIe 1.0 x16
Supplementary power connectors
2x 6-pin
None
Core clock speed
1000 MHz
400 MHz
Manufacturing process technology
28 nm
80 nm
Number of transistors
2800 Million
330 million
Pipelines / CUDA cores
1280
-
Power consumption (TDP)
175 Watt
-
Texture fill rate
80.00
3.200
Memory type
GDDR5
GDDR3
Maximum RAM amount
2 GB
128 MB
Memory bus width
256 Bit
128 Bit
Memory clock speed
4800 MHz
800 MHz
Memory bandwidth
153.6 GB/s
12.8 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x VGA, 1x S-Video
Eyefinity
+
-
HDMI
+
-
DirectX
12 (11_1)
9.0c (9_3)
OpenCL
1.2
N/A
OpenGL
4.6
2.0
Shader Model
5.1
3.0
Vulkan
1.2.131
N/A