Radeon HD 6870 X2 and GeForce GTS 250 - video card comparison
Radeon HD 6870 X2
GeForce GTS 250
Architecture
TeraScale 2 (2009−2015)
Tesla (2006−2010)
GPU code name
Barts
G92B
Market segment
Desktop
Desktop
Release date
July 2011
March 2009
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
-
6-pin
SLI options
-
+
Core clock speed
900 MHz
738 MHz
CUDA cores
-
128
Floating-point performance
2x 2,016.0 gflops
387.1 gflops
Manufacturing process technology
40 nm
55 nm
Number of transistors
1,700 million
754 million
Pipelines / CUDA cores
1120
128
Power consumption (TDP)
300 Watt
150 Watt
Maximum GPU temperature
-
105 °C
Texture fill rate
50.40
47.2 billion/sec
Memory type
GDDR5
GDDR3
Maximum RAM amount
1 GB
1 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
4200 MHz
1100 MHz
Memory bandwidth
134.4 GB/s
70.4 GB/s
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
Two Dual Link DVI
Multi monitor support
-
+
HDMI
+
+
Maximum VGA resolution
-
2048x1536
Audio input for HDMI
-
S/PDIF
DirectX
11.2 (11_0)
11.1 (10_0)
CUDA
-
+
OpenCL
1.2
1.1
OpenGL
4.4
3.0
Shader Model
5.0
4.0
Vulkan
N/A
N/A