GeForce 9800 GX2 and Radeon HD 6450 GDDR5 - video card comparison
GeForce 9800 GX2
Radeon HD 6450 GDDR5
Architecture
Tesla (2006−2010)
Terascale 2 (2009−2015)
GPU code name
G92
Caicos
Market segment
Desktop
Desktop
Release date
March 2008
April 2011
Interface
PCIe 2.0 x16
-
Supplementary power connectors
6-pin & 8-pin
-
SLI options
+
-
Core clock speed
600 MHz
750 MHz
CUDA cores
256 (128 per GPU)
-
Floating-point performance
2x 384.0 gflops
-
Manufacturing process technology
65 nm
40 nm
Number of transistors
754 million
-
Pipelines / CUDA cores
128
160
Power consumption (TDP)
197 Watt
27 Watt
Maximum GPU temperature
105 °C
-
Texture fill rate
76.8 billion/sec
-
Memory type
GDDR3
GDDR5
Maximum RAM amount
512 MB
1 GB
Memory bus width
512 Bit
64 Bit
Memory clock speed
1000 MHz
900 MHz
Memory bandwidth
128 (64 per GPU)
-
Shared memory
-
-
Display Connectors
HDMIDual Link DVI
-
Multi monitor support
+
-
HDMI
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
S/PDIF
-
DirectX
11.1 (10_0)
11
CUDA
+
-
OpenCL
1.1
-
OpenGL
2.1
-
Shader Model
4.0
-
Vulkan
N/A
-