Radeon HD 8790M and Radeon HD 3870 - video card comparison
Passmark - benchmark score Radeon HD 8790M vs Radeon HD 3870
Radeon HD 8790M
1344
Radeon HD 3870
572
Radeon HD 8790M
Radeon HD 3870
Architecture
GCN (2011−2017)
TeraScale (2005−2013)
GPU code name
Mars XTX
RV670
Market segment
Laptop
Desktop
Release date
November 2012
November 2007
Interface
MXM-A (3.0)
PCIe 2.0 x16
Supplementary power connectors
None
1x 6-pin
Boost clock speed
900 MHz
-
Core clock speed
850 MHz
777 MHz
Floating-point performance
691.2 gflops
497.3 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
950 million
666 million
Pipelines / CUDA cores
384
320
Power consumption (TDP)
unknown
106 Watt
Texture fill rate
21.60
12.43
Memory type
GDDR5
GDDR4
Maximum RAM amount
2 GB
512 MB
Memory bus width
128 Bit
256 Bit
Memory clock speed
4500 MHz
2252 MHz
Memory bandwidth
64 GB/s
72.06 GB/s
Shared memory
-
-
Display Connectors
No outputs
2x DVI, 1x S-Video
DirectX
12 (11_1)
10.1 (10_1)
OpenCL
1.2
N/A
OpenGL
4.6
3.3
Shader Model
5.1
4.1
Vulkan
1.2.131
N/A