Radeon R9 390 X2 and GeForce 8600 GT - video card comparison
Radeon R9 390 X2
GeForce 8600 GT
Architecture
GCN 2.0 (2013−2017)
Tesla (2006−2010)
GPU code name
Grenada
G84
Market segment
Desktop
Desktop
Release date
September 2015
April 2007
Interface
PCIe 3.0 x16
PCIe 1.0 x16
Supplementary power connectors
4x 8-pin
None
SLI options
-
+
Core clock speed
1000 MHz
540 MHz
Floating-point performance
2x 5,120 gflops
76.16 gflops
Manufacturing process technology
28 nm
80 nm
Number of transistors
6,200 million
289 million
Pipelines / CUDA cores
2560
32
Power consumption (TDP)
580 Watt
47 Watt
Texture fill rate
160.0
8.6 billion/sec
Memory type
GDDR5
GDDR3
Maximum RAM amount
8 GB
512 MB
Memory bus width
512 Bit
128 Bit
Memory clock speed
5400 MHz
700 MHz
Memory bandwidth
345.6 GB/s
22.4 GB/s
Standard memory config per GPU
-
256 MB
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
2x DVI, 1x S-Video
HDMI
+
-
DirectX
12 (12_0)
11.1 (10_0)
CUDA
-
1.1
OpenCL
2.0
1.1
OpenGL
4.6
2.1
Shader Model
6.3
4.0
Vulkan
1.2.131
N/A