GeForce 8800 GTX and Radeon HD 6450 GDDR5 - video card comparison
GeForce 8800 GTX
Radeon HD 6450 GDDR5
Architecture
Tesla (2006−2010)
Terascale 2 (2009−2015)
GPU code name
G80
Caicos
Market segment
Desktop
Desktop
Release date
November 2006
April 2011
Interface
PCIe 1.0 x16
-
Supplementary power connectors
2x 6-pin
-
SLI options
+
-
Core clock speed
576 MHz
750 MHz
CUDA cores
575
-
Floating-point performance
345.6 gflops
-
Manufacturing process technology
90 nm
40 nm
Number of transistors
681 million
-
Pipelines / CUDA cores
128
160
Power consumption (TDP)
155 Watt
27 Watt
Texture fill rate
36.8 billion/sec
-
Memory type
GDDR3
GDDR5
Maximum RAM amount
768 MB
1 GB
Memory bus width
384 Bit
64 Bit
Memory clock speed
900 MHz
900 MHz
Memory bandwidth
86.4 GB/s
-
Shared memory
-
-
Display Connectors
2x DVI, 1x S-Video
-
DirectX
11.1 (10_0)
11
CUDA
+
-
OpenCL
1.1
-
OpenGL
3.3
-
Shader Model
4.0
-
Vulkan
N/A
-