Radeon HD 7770 and Radeon HD 8790M - video card comparison
Passmark - benchmark score Radeon HD 7770 vs Radeon HD 8790M
Radeon HD 7770
2235
Radeon HD 8790M
1344
Radeon HD 7770
Radeon HD 8790M
Architecture
GCN (2011−2017)
GCN (2011−2017)
GPU code name
Cape Verde
Mars XTX
Market segment
Desktop
Laptop
Release date
February 2012
November 2012
Interface
PCIe 3.0 x16
MXM-A (3.0)
Supplementary power connectors
1x 6-pin
None
Boost clock speed
-
900 MHz
Core clock speed
1000 MHz
850 MHz
Floating-point performance
-
691.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,500 million
950 million
Pipelines / CUDA cores
640
384
Power consumption (TDP)
80 Watt
unknown
Texture fill rate
40.00
21.60
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
4500 MHz
4500 MHz
Memory bandwidth
72 GB/s
64 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
+
-
HDMI
+
-
DirectX
12 (11_1)
12 (11_1)
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.2.131
1.2.131