AMD Radeon HD 6870 X2 vs NVIDIA GRID K520

GPU · Specs Compare

Products
GPU AMD Radeon HD 6870 X2 AMD · 2011-07
GPU NVIDIA GRID K520 NVIDIA · 2013-07
Graphics Card
Release Date
Jul 2011
Jul 2013
Generation
Northern Islands
GRID
Type
Desktop
Professional
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1050 MHz
1250 MHz
Memory
Memory Size
1024MB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
134.4GB/s
160.0GB/s
Render Config
Compute Units
14
—
Shading Units
1120
1536
TMUs
56
128
ROPs
32
32
L1 Cache
8 KB (per CU)
16 KB (per SMX)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
28.80 GPixel/s
23.84 GPixel/s
Texture Rate
50.40 GTexel/s
95.36 GTexel/s
FP32 (float)
2.016 TFLOPS
2.289 TFLOPS
FP64 (double)
—
95.36 GFLOPS
Graphics Processor
GPU Name
Barts
GK104
GPU Variant
Barts XT(215-0798000)
—
Architecture
TeraScale 2
Kepler
Foundry
TSMC
TSMC
Process Size
40 nm
28 nm
Transistors
1.7 billion
3.54 billion
Die Size
255 mm²
294 mm²
Board Design
TDP
300W
225W
Suggested PSU
700 W
550 W
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
No outputs
Power Connectors
—
1x 8-pin
Graphics Features
DirectX
11.2 (11_0)
12 (11_0)
OpenGL
4.4
4.6
OpenCL
1.2
3.0
Vulkan
N/A
1.1
Shader Model
5.0
5.1
CUDA
—
3.0
▲ Specs Compare Data sourced from official specifications and benchmark tests.