AMD Radeon HD 6850 1440SP Edition vs NVIDIA Tesla K40st
GPU Specs Compare
Graphics Card
Release Date
Aug 2012
Nov 2013
Generation
Northern Islands
Tesla
Type
Desktop
Professional
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1000 MHz
1502 MHz
Memory
Memory Size
1024MB
12GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
384bit
Bandwidth
128.0GB/s
288.4GB/s
Render Config
Compute Units
18
-
Shading Units
1440
2880
TMUs
72
240
ROPs
32
48
L1 Cache
8 KB (per CU)
16 KB (per SMX)
L2 Cache
512 KB
1536 KB
Theoretical Performance
Pixel Rate
23.20 GPixel/s
34.50 GPixel/s
Texture Rate
52.20 GTexel/s
138.0 GTexel/s
FP32 (float)
2.088 TFLOPS
3.312 TFLOPS
FP64 (double)
417.6 GFLOPS
1104 GFLOPS
Graphics Processor
GPU Name
Cypress
GK110B
GPU Variant
Cypress PRO(215-0735043)
-
Architecture
TeraScale 2
Kepler
Foundry
TSMC
TSMC
Process Size
40 nm
28 nm
Transistors
2.154 billion
7.08 billion
Die Size
334 mm²
561 mm²
Board Design
TDP
151W
245W
Suggested PSU
450 W
550 W
Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
No outputs
Power Connectors
2x 6-pin
-
Graphics Features
DirectX
11.2 (11_0)
12 (11_1)
OpenGL
4.4
4.6
OpenCL
1.2
3.0
Vulkan
N/A
1.1
Shader Model
5.0
5.1
CUDA
-
3.5