Radeon R7 250X and GeForce 840M - video card comparison
Passmark - benchmark score Radeon R7 250X vs GeForce 840M
Radeon R7 250X
2336
GeForce 840M
1121
Radeon R7 250X
GeForce 840M
Architecture
GCN 1.0 (2012−2020)
Maxwell (2014−2018)
GPU code name
Cape Verde
N15S-GT
Market segment
Desktop
Laptop
Release date
February 2014
March 2014
Bus support
PCIe 3.0
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
1 x 6-pin
-
Boost clock speed
1000 MHz
1124 MHz
Core clock speed
-
1029 MHz
Floating-point performance
1,216 gflops
863.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,500 million
-
Pipelines / CUDA cores
640
384
Power consumption (TDP)
80 Watt
33 Watt
Texture fill rate
38.00
17.98
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
4 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1625 MHz
2000 MHz
Memory bandwidth
96 GB/s
16.02 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 12
12 (11_0)
CUDA
-
+
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.5
Shader Model
5.1
5.1
Vulkan
-
1.1.126
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
GameWorks
-
+
GPU Boost
-
2.0
HD3D
-
-
Optimus
-
+
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-