AMD Radeon HD 6870 X2 vs NVIDIA GeForce GTX 980
GPU · Specs Compare
Graphics Card
Release Date
Jul 2011
Sep 2014
Generation
Northern Islands
GeForce 900
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1050 MHz
1753 MHz
Base Clock
—
1127 MHz
Boost Clock
—
1216 MHz
Memory
Memory Size
1024MB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
134.4GB/s
224.4GB/s
Render Config
Compute Units
14
—
Shading Units
1120
2048
TMUs
56
128
ROPs
32
64
L1 Cache
8 KB (per CU)
48 KB (per SMM)
L2 Cache
512 KB
2 MB
Theoretical Performance
Pixel Rate
28.80 GPixel/s
77.82 GPixel/s
Texture Rate
50.40 GTexel/s
155.6 GTexel/s
FP32 (float)
2.016 TFLOPS
4.981 TFLOPS
FP64 (double)
—
155.6 GFLOPS
Graphics Processor
GPU Name
Barts
GM204
GPU Variant
Barts XT(215-0798000)
GM204-400-A1
Architecture
TeraScale 2
Maxwell 2.0
Foundry
TSMC
TSMC
Process Size
40 nm
28 nm
Transistors
1.7 billion
5.2 billion
Die Size
255 mm²
398 mm²
Board Design
TDP
300W
165W
Suggested PSU
700 W
450 W
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
1x DVI1x HDMI 2.03x DisplayPort 1.4a
Power Connectors
—
2x 6-pin
Graphics Features
DirectX
11.2 (11_0)
12 (12_1)
OpenGL
4.4
4.6
OpenCL
1.2
3.0
Vulkan
N/A
1.3
Shader Model
5.0
6.4
CUDA
—
5.2
▲ Specs Compare
Data sourced from official specifications and benchmark tests.