GeForce GTX 980 and Tesla K20X - video card comparison
GeForce GTX 980
Tesla K20X
Architecture
Maxwell (2014−2018)
Kepler (2012−2018)
GPU code name
GM204
GK110
Market segment
Desktop
Workstation
Release date
September 2014
November 2012
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Recommended system power (PSU)
500 Watt
-
Supplementary power connectors
2x 6-pins
1x 6-pin + 1x 8-pin
SLI options
+
-
Boost clock speed
1216 MHz
-
Core clock speed
1064 MHz
732 MHz
CUDA cores
2048
-
Floating-point performance
4,981 gflops
3,935 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
5,200 million
7,080 million
Pipelines / CUDA cores
2048
2688
Power consumption (TDP)
165 Watt
235 Watt
Texture fill rate
144 billion/sec
164.0
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
6 GB
Memory bus width
256 Bit
384 Bit
Memory clock speed
7.0 GB/s
5200 MHz
Memory bandwidth
224 GB/s
249.6 GB/s
Shared memory
-
-
Display Connectors
Dual Link DVI-I, HDMI 2.0, 3x DisplayPort 1.2
No outputs
Multi monitor support
4 displays
-
VGA аnalog display support
+
-
DisplayPort Multimode (DP++) support
+
-
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
2048x1536
-
G-SYNC support
+
-
Audio input for HDMI
Internal
-
DirectX
12 (12_1)
12 (11_0)
CUDA
+
3.5
OpenCL
1.2
1.2
OpenGL
4.5
4.6
Shader Model
6.4
5.1
Vulkan
1.1.126
1.1.126
BatteryBoost
+
-
GameStream
+
-
GameWorks
+
-
GeForce ShadowPlay
+
-
GPU Boost
2.0
-
H.264, VC1, MPEG2 1080p video decoder
+
-
Optimus
+
-