Radeon HD 3850 and Radeon HD 7490M - video card comparison
Radeon HD 3850
Radeon HD 7490M
Architecture
TeraScale (2005−2013)
Terascale 2 (2009−2015)
GPU code name
RV670
Seymour XTX
Market segment
Desktop
Laptop
Release date
November 2007
December 2011
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
-
Core clock speed
668 MHz
800 MHz
Floating-point performance
427.5 gflops
256.0 gflops
Manufacturing process technology
55 nm
40 nm
Number of transistors
666 million
370 million
Pipelines / CUDA cores
320
160
Power consumption (TDP)
75 Watt
9 Watt
Texture fill rate
10.69
6.400
Memory type
GDDR3
GDDR5
Maximum RAM amount
1 GB
512 MB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1660 MHz
3800 MHz
Memory bandwidth
53.12 GB/s
30.4 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x S-Video
No outputs
DirectX
10.1 (10_1)
11.2 (11_0)
OpenCL
N/A
1.2
OpenGL
3.3
4.4
Shader Model
4.1
5.0
Vulkan
N/A
N/A