Radeon HD 7850 and GeForce GT 640M - video card comparison
Passmark - benchmark score Radeon HD 7850 vs GeForce GT 640M
Radeon HD 7850
3976
GeForce GT 640M
943
Radeon HD 7850
GeForce GT 640M
Architecture
GCN 1.0 (2012−2020)
Kepler (2012−2018)
GPU code name
Pitcairn
N13P-GS
Market segment
Desktop
Laptop
Release date
March 2012
March 2012
Bus support
PCIe 2.1 x16
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin
-
Boost clock speed
1000 MHz
645 MHz
Core clock speed
-
Up to 625 MHz
CUDA cores
-
384
Floating-point performance
1,761 gflops
480.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,800 million
1,270 million
Pipelines / CUDA cores
1024
384
Power consumption (TDP)
130 Watt
32 Watt
Texture fill rate
55.04
Up to 20.0 billion/sec
Memory type
GDDR5
DDR3\GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
128bit
Memory clock speed
1200 MHz
1800 - 4000 MHz
Memory bandwidth
153.6 GB/s
Up to 64.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
-
HDMI
+
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DisplayPort support
-
-
DirectX
12
12 API
CUDA
-
+
Mantle
-
-
OpenCL
1.2
1.1
OpenGL
4.6
4.5
Shader Model
5.1
5.1
Vulkan
+
1.1.126
3D Blu-Ray
-
+
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
Optimus
-
+
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-