Radeon HD 6770 and GeForce 840M - video card comparison
Passmark - benchmark score Radeon HD 6770 vs GeForce 840M
Radeon HD 6770
1286
GeForce 840M
1121
Radeon HD 6770
GeForce 840M
Architecture
TeraScale 2 (2009−2015)
Maxwell (2014−2018)
GPU code name
Juniper
N15S-GT
Market segment
Desktop
Laptop
Release date
January 2011
March 2014
Bus support
PCIe 2.0 x16
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
1x 6-pin
-
Boost clock speed
900 MHz
1124 MHz
Core clock speed
-
1029 MHz
Floating-point performance
1,360.0 gflops
863.2 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,040 million
-
Pipelines / CUDA cores
800
384
Power consumption (TDP)
108 Watt
33 Watt
Texture fill rate
34.00
17.98
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
4 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1050 MHz
2000 MHz
Memory bandwidth
76.8 GB/s
16.02 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 11
12 (11_0)
CUDA
-
+
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.4
4.5
Shader Model
5.0
5.1
Vulkan
-
1.1.126
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
GameWorks
-
+
GPU Boost
-
2.0
HD3D
-
-
Optimus
-
+
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-