NVIDIA Tesla K20X vs AMD Radeon HD 6850 1440SP Edition
GPU · Specs Compare
Graphics Card
Release Date
Nov 2012
Aug 2012
Generation
Tesla
Northern Islands
Type
Professional
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 2.0 x16
Clock Speeds
Memory Clock
1300 MHz
1000 MHz
Memory
Memory Size
6GB
1024MB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
256bit
Bandwidth
249.6GB/s
128.0GB/s
Render Config
Shading Units
2688
1440
TMUs
224
72
ROPs
48
32
L1 Cache
16 KB (per SMX)
8 KB (per CU)
L2 Cache
1536 KB
512 KB
Compute Units
—
18
Theoretical Performance
Pixel Rate
40.99 GPixel/s
23.20 GPixel/s
Texture Rate
164.0 GTexel/s
52.20 GTexel/s
FP32 (float)
3.935 TFLOPS
2.088 TFLOPS
FP64 (double)
1312 GFLOPS
417.6 GFLOPS
Graphics Processor
GPU Name
GK110
Cypress
Architecture
Kepler
TeraScale 2
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
7.08 billion
2.154 billion
Die Size
561 mm²
334 mm²
GPU Variant
—
Cypress PRO(215-0735043)
Board Design
TDP
235W
151W
Suggested PSU
550 W
450 W
Outputs
No outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
Power Connectors
1x 6-pin + 1x 8-pin
2x 6-pin
Graphics Features
DirectX
12 (11_0)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
3.0
1.2
Vulkan
1.1
N/A
CUDA
3.5
—
Shader Model
5.1
5.0
▲ Specs Compare
Data sourced from official specifications and benchmark tests.