GeForce 840A and Radeon HD 4850 X2 - video card comparison
Passmark - benchmark score GeForce 840A vs Radeon HD 4850 X2
GeForce 840A
1214
Radeon HD 4850 X2
1166
GeForce 840A
Radeon HD 4850 X2
Architecture
Maxwell (2014−2018)
TeraScale (2005−2013)
GPU code name
GM108
R700
Market segment
Desktop
Desktop
Release date
March 2014
November 2008
Interface
PCIe 3.0 x8
PCIe 2.0 x16
Supplementary power connectors
-
1x 6-pin + 1x 8-pin
Boost clock speed
1124 MHz
-
Core clock speed
1029 MHz
625 MHz
Floating-point performance
863.2 gflops
2x 1,000.0 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
-
956 million
Pipelines / CUDA cores
384
800
Power consumption (TDP)
33 Watt
250 Watt
Texture fill rate
17.98
25.00
Memory type
DDR3
GDDR3
Maximum RAM amount
2 GB
512 MB
Memory bus width
64 Bit
256 Bit
Memory clock speed
2002 MHz
1990 MHz
Memory bandwidth
16.02 GB/s
63.68 GB/s
Display Connectors
No outputs
4x DVI, 1x S-Video
DirectX
12 (11_0)
10.1 (10_1)
CUDA
5.0
-
OpenCL
1.2
1.1
OpenGL
4.6
3.3
Shader Model
5.1
4.1
Vulkan
1.1.126
N/A