Radeon HD 4870 and Quadro K620 - video card comparison
Passmark - benchmark score Radeon HD 4870 vs Quadro K620
Radeon HD 4870
1411
Quadro K620
2297
Radeon HD 4870
Quadro K620
Architecture
TeraScale (2005−2013)
Maxwell (2014−2018)
GPU code name
RV770
GM107
Market segment
Desktop
Workstation
Release date
June 2008
July 2014
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
None
Boost clock speed
-
1124 MHz
Core clock speed
750 MHz
1058 MHz
Floating-point performance
1,200.0 gflops
863.2 gflops
Manufacturing process technology
55 nm
28 nm
Number of transistors
956 million
1,870 million
Pipelines / CUDA cores
800
384
Power consumption (TDP)
150 Watt
41 Watt
Texture fill rate
30.00
26.98
Memory type
GDDR5
128 Bit
Maximum RAM amount
1 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
3600 MHz
1800 MHz
Memory bandwidth
115.2 GB/s
Up to 29 GB/s
Display Connectors
2x DVI, 1x S-Video
DVI-I DP
Number of simultaneous displays
-
4
DirectX
10.1 (10_1)
12
CUDA
-
5.0
OpenCL
1.1
1.2
OpenGL
3.3
4.5
Shader Model
4.1
5
Vulkan
N/A
+
3D Vision Pro
-
+
Mosaic
-
+
nView Desktop Management
-
+