NVIDIA Tesla K40d vs AMD Radeon R9 280
GPU Specs Compare
Graphics Card
Release Date
Nov 2013
Mar 2014
Generation
Tesla Kepler
Volcanic Islands
Type
Professional
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
745 MHz
827 MHz
Boost Clock
876 MHz
933 MHz
Memory Clock
1502 MHz
1250 MHz
Memory
Memory Size
12GB
3GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
384bit
Bandwidth
288.4GB/s
240.0GB/s
Render Config
Shading Units
2880
1792
TMUs
240
112
ROPs
48
32
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
1536 KB
768 KB
Compute Units
-
28
Theoretical Performance
Pixel Rate
52.56 GPixel/s
29.86 GPixel/s
Texture Rate
210.2 GTexel/s
104.5 GTexel/s
FP32 (float)
5.046 TFLOPS
3.344 TFLOPS
FP64 (double)
1.682 TFLOPS
836.0 GFLOPS
Graphics Processor
GPU Name
GK110B
Tahiti
Architecture
Kepler
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
7.08 billion
4.313 billion
Die Size
561 mm²
352 mm²
GPU Variant
-
Tahiti PRO3(215-0821330)
Board Design
TDP
245W
200W
Suggested PSU
550 W
550 W
Outputs
No outputs
1x DVI2x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
-
1x 6-pin + 1x 8-pin
Graphics Features
DirectX
12 (11_1)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
3.0
1.2
Vulkan
1.2.175
1.2
CUDA
3.5
-
Shader Model
6.5 (5.1)
5.1