Radeon HD 6990 and GeForce GTX 1660 - video card comparison
Passmark - benchmark score Radeon HD 6990 vs GeForce GTX 1660
Radeon HD 6990
3103
GeForce GTX 1660
12040
Radeon HD 6990
GeForce GTX 1660
Architecture
TeraScale 3 (2010−2013)
Turing (2018−2021)
GPU code name
Antilles
Turing TU116
Market segment
Desktop
Desktop
Release date
March 2011
March 2019
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 8-pin
1x 8-pin
Boost clock speed
-
1785 MHz
Core clock speed
830 MHz
1530 MHz
Floating-point performance
2x 2,549.8 gflops
-
Manufacturing process technology
40 nm
12 nm
Number of transistors
2,640 million
6,600 million
Pipelines / CUDA cores
1536
1408
Power consumption (TDP)
375 Watt
120 Watt
Texture fill rate
79.68
157.1
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
6 GB
Memory bus width
256 Bit
192 Bit
Memory clock speed
5000 MHz
8000 MHz
Memory bandwidth
160.0 GB/s
192.1 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 4x mini-DisplayPort
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
11.2 (11_0)
12 (12_1)
CUDA
-
7.5
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
6.5
Vulkan
N/A
1.2.131