NVIDIA GeForce GTX 780M Mac Edition vs AMD Radeon HD 6850 X2
GPU Specs Compare
Graphics Card
Release Date
Nov 2013
Sep 2011
Generation
GeForce 700M
Northern Islands
Type
Mobile
Desktop
Bus Interface
MXM-B (3.0)
PCIe 2.0 x16
Clock Speeds
Base Clock
771 MHz
-
Boost Clock
797 MHz
-
Memory Clock
1250 MHz
1050 MHz
Memory
Memory Size
4GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
160.0GB/s
134.4GB/s
Render Config
Shading Units
1536
960
TMUs
128
48
ROPs
32
32
L1 Cache
16 KB (per SMX)
8 KB (per CU)
L2 Cache
512 KB
512 KB
Compute Units
-
12
Theoretical Performance
Pixel Rate
25.50 GPixel/s
25.60 GPixel/s
Texture Rate
102.0 GTexel/s
38.40 GTexel/s
FP32 (float)
2.448 TFLOPS
1.536 TFLOPS
FP64 (double)
102.0 GFLOPS
-
Graphics Processor
GPU Name
GK104
Barts
GPU Variant
N14E-GTX-A2
Barts PRO(215-0798006)
Architecture
Kepler
TeraScale 2
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
3.54 billion
1.7 billion
Die Size
294 mm²
255 mm²
Board Design
TDP
122W
254W
Outputs
No outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
Suggested PSU
-
600 W
Power Connectors
-
2x 8-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
3.0
-
Shader Model
5.1
5.0