Radeon HD 7770 and GeForce 8400 GS - video card comparison
Passmark - benchmark score Radeon HD 7770 vs GeForce 8400 GS
Radeon HD 7770
2235
GeForce 8400 GS
156
Radeon HD 7770
GeForce 8400 GS
Architecture
GCN (2011−2017)
Tesla (2006−2010)
GPU code name
Cape Verde
G86
Market segment
Desktop
Desktop
Release date
February 2012
April 2007
Interface
PCIe 3.0 x16
PCIe 1.0 x16
Supplementary power connectors
1x 6-pin
None
SLI options
-
+
Core clock speed
1000 MHz
459 MHz
Floating-point performance
-
29.376 gflops
Manufacturing process technology
28 nm
80 nm
Number of transistors
1,500 million
210 million
Pipelines / CUDA cores
640
16
Power consumption (TDP)
80 Watt
40 Watt
Texture fill rate
40.00
3.6 billion/sec
Memory type
GDDR5
DDR2
Maximum RAM amount
2 GB
256 MB
Memory bus width
128 Bit
64 Bit
Memory clock speed
4500 MHz
800 MHz
Memory bandwidth
72 GB/s
6.4 GB/s
Shared memory
-
-
Standard memory config per GPU
-
256 MB
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x VGA, 1x S-Video
Eyefinity
+
-
HDMI
+
-
DirectX
12 (11_1)
11.1 (10_0)
CUDA
-
1.1
OpenCL
1.2
1.1
OpenGL
4.6
2.1
Shader Model
5.1
4.0
Vulkan
1.2.131
N/A