AMD Radeon HD 6870 X2 vs NVIDIA GeForce GTX 650 Ti
GPU Specs Compare
Graphics Card
Release Date
Jul 2011
Oct 2012
Generation
Northern Islands
GeForce 600
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1050 MHz
1350 MHz
Memory
Memory Size
1024MB
1024MB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
128bit
Bandwidth
134.4GB/s
86.40GB/s
Render Config
Compute Units
14
-
Shading Units
1120
768
TMUs
56
64
ROPs
32
16
L1 Cache
8 KB (per CU)
16 KB (per SMX)
L2 Cache
512 KB
256 KB
Theoretical Performance
Pixel Rate
28.80 GPixel/s
14.85 GPixel/s
Texture Rate
50.40 GTexel/s
59.39 GTexel/s
FP32 (float)
2.016 TFLOPS
1425 GFLOPS
FP64 (double)
-
59.39 GFLOPS
Graphics Processor
GPU Name
Barts
GK106
GPU Variant
Barts XT(215-0798000)
GK106-220-A1
Architecture
TeraScale 2
Kepler
Foundry
TSMC
TSMC
Process Size
40 nm
28 nm
Transistors
1.7 billion
2.54 billion
Die Size
255 mm²
221 mm²
Board Design
TDP
300W
110W
Suggested PSU
700 W
300 W
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
2x DVI1x mini-HDMI 1.4a
Power Connectors
-
1x 6-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