Radeon HD 7770 and Radeon HD 6770 - video card comparison
Passmark - benchmark score Radeon HD 7770 vs Radeon HD 6770
Radeon HD 7770
2235
Radeon HD 6770
1286
Radeon HD 7770
Radeon HD 6770
Architecture
GCN (2011−2017)
TeraScale 2 (2009−2015)
GPU code name
Cape Verde
Juniper
Market segment
Desktop
Desktop
Release date
February 2012
January 2011
Bus support
-
PCIe 2.0 x16
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
1x 6-pin
Boost clock speed
-
900 MHz
Core clock speed
1000 MHz
-
Floating-point performance
-
1,360.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,500 million
1,040 million
Pipelines / CUDA cores
640
800
Power consumption (TDP)
80 Watt
108 Watt
Texture fill rate
40.00
34.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
4500 MHz
1050 MHz
Memory bandwidth
72 GB/s
76.8 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
2x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
+
1
HDMI
+
+
DisplayPort support
-
-
DirectX
12 (11_1)
DirectX® 11
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
Vulkan
1.2.131
-
AppAcceleration
-
-
CrossFire
-
1
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-