Radeon HD 3870 X2 and Tegra X1 - video card comparison
Radeon HD 3870 X2
Tegra X1
Architecture
TeraScale (2005−2013)
Maxwell 2.0 (2015−2019)
GPU code name
R680
GM20B
Market segment
Desktop
Desktop
Release date
January 2008
-
Interface
PCIe 2.0 x16
IGP
Supplementary power connectors
1x 6-pin + 1x 8-pin
-
Core clock speed
825 MHz
1000 MHz
Floating-point performance
2x 528.0 gflops
-
Manufacturing process technology
55 nm
20 nm
Number of transistors
666 million
2,000 million
Pipelines / CUDA cores
320
256
Power consumption (TDP)
165 Watt
15 Watt
Texture fill rate
13.20
16.00
Memory type
GDDR3
System Shared
Maximum RAM amount
512 MB
System Shared
Memory bus width
256 Bit
System Shared
Memory clock speed
1802 MHz
System Shared
Memory bandwidth
57.66 GB/s
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Display Connectors
2x DVI, 1x S-Video
No outputs
DirectX
10.1 (10_1)
12 (12_1)
OpenCL
N/A
-
OpenGL
3.3
4.6
Shader Model
4.1
-
Vulkan
N/A
-