AMD Radeon HD 6870 vs NVIDIA Quadro P620 Mobile
GPU · Specs Compare
Graphics Card
Release Date
Oct 2010
Feb 2018
Generation
Northern Islands
Quadro Mobile
Type
Desktop
Professional
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1050 MHz
1502 MHz
Base Clock
—
1177 MHz
Boost Clock
—
1443 MHz
Memory
Memory Size
1024MB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
128bit
Bandwidth
134.4GB/s
96.13GB/s
Render Config
Compute Units
14
—
Shading Units
1120
512
TMUs
56
32
ROPs
32
16
L1 Cache
8 KB (per CU)
48 KB (per SM)
L2 Cache
512 KB
1024 KB
SM Count
—
4
Theoretical Performance
Pixel Rate
28.80 GPixel/s
23.09 GPixel/s
Texture Rate
50.40 GTexel/s
46.18 GTexel/s
FP32 (float)
2.016 TFLOPS
1478 GFLOPS
FP16 (half)
—
23.09 GFLOPS
FP64 (double)
—
46.18 GFLOPS
Graphics Processor
GPU Name
Barts
GP107
GPU Variant
Barts XT(215-0798000)
—
Architecture
TeraScale 2
Pascal
Foundry
TSMC
Samsung
Process Size
40 nm
14 nm
Transistors
1.7 billion
3.3 billion
Die Size
255 mm²
132 mm²
Board Design
TDP
151W
40W
Suggested PSU
450 W
—
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
No outputs
Power Connectors
2x 6-pin
None
Graphics Features
DirectX
11.2 (11_0)
12 (12_1)
OpenGL
4.4
4.6
OpenCL
1.2
3.0
Vulkan
N/A
1.3
Shader Model
5.0
6.4
CUDA
—
6.1
▲ Specs Compare
Data sourced from official specifications and benchmark tests.