AMD Radeon HD 6870 vs NVIDIA GeForce GTX 780M Mac Edition
GPU Specs Compare
Graphics Card
Release Date
Oct 2010
Nov 2013
Generation
Northern Islands
GeForce 700M
Type
Desktop
Mobile
Bus Interface
PCIe 2.0 x16
MXM-B (3.0)
Clock Speeds
Memory Clock
1050 MHz
1250 MHz
Base Clock
-
771 MHz
Boost Clock
-
797 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
25.50 GPixel/s
Texture Rate
50.40 GTexel/s
102.0 GTexel/s
FP32 (float)
2.016 TFLOPS
2.448 TFLOPS
FP64 (double)
-
102.0 GFLOPS
Graphics Processor
GPU Name
Barts
GK104
GPU Variant
Barts XT(215-0798000)
N14E-GTX-A2
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
151W
122W
Suggested PSU
450 W
-
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
No outputs
Power Connectors
2x 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