Radeon HD 3870 X2 and Radeon HD 8790M - video card comparison
Passmark - benchmark score Radeon HD 3870 X2 vs Radeon HD 8790M
Radeon HD 3870 X2
729
Radeon HD 8790M
1344
Radeon HD 3870 X2
Radeon HD 8790M
Architecture
TeraScale (2005−2013)
GCN (2011−2017)
GPU code name
R680
Mars XTX
Market segment
Desktop
Laptop
Release date
January 2008
November 2012
Interface
PCIe 2.0 x16
MXM-A (3.0)
Supplementary power connectors
1x 6-pin + 1x 8-pin
None
Boost clock speed
-
900 MHz
Core clock speed
825 MHz
850 MHz
Floating-point performance
2x 528.0 gflops
691.2 gflops
Manufacturing process technology
55 nm
28 nm
Number of transistors
666 million
950 million
Pipelines / CUDA cores
320
384
Power consumption (TDP)
165 Watt
unknown
Texture fill rate
13.20
21.60
Memory type
GDDR3
GDDR5
Maximum RAM amount
512 MB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
1802 MHz
4500 MHz
Memory bandwidth
57.66 GB/s
64 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x S-Video
No outputs
DirectX
10.1 (10_1)
12 (11_1)
OpenCL
N/A
1.2
OpenGL
3.3
4.6
Shader Model
4.1
5.1
Vulkan
N/A
1.2.131