GeForce 9800 GTX and GeForce 8800 GTS 640 - video card comparison
GeForce 9800 GTX
GeForce 8800 GTS 640
Architecture
Tesla (2006−2010)
Tesla (2006−2010)
GPU code name
G92
G80
Market segment
Desktop
Desktop
Release date
March 2008
November 2006
Bus support
PCI-E 2.0
-
Interface
PCIe 2.0 x16
PCIe 1.0 x16
Supplementary power connectors
2x 6-pin
1x 6-pin
SLI options
+
-
Core clock speed
675 MHz
513 MHz
CUDA cores
128
-
Floating-point performance
432.1 gflops
228.1 gflops
Manufacturing process technology
65 nm
90 nm
Number of transistors
754 million
681 million
Pipelines / CUDA cores
128
96
Power consumption (TDP)
140 Watt
143 Watt
Maximum GPU temperature
105 °C
-
Texture fill rate
43.2 billion/sec
24.62
Memory type
GDDR3
GDDR3
Maximum RAM amount
512 MB
640 MB
Memory bus width
256 Bit
320 Bit
Memory clock speed
1100 MHz
1584 MHz
Memory bandwidth
70.4 GB/s
63.36 GB/s
Display Connectors
HDTVDual Link DVI
2x DVI, 1x S-Video
Multi monitor support
+
-
HDMI
Via Adapter
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
S/PDIF
-
DirectX
11.1 (10_0)
11.1 (10_0)
CUDA
+
+
OpenCL
1.1
1.1
OpenGL
2.1
3.3
Shader Model
4.0
4.0
Vulkan
N/A
N/A