NVIDIA GeForce GTX 780M Mac Edition vs AMD Radeon R5 A255
We compared two Mobile platform GPUs: 4GB VRAM GeForce GTX 780M Mac Edition and 1024MB VRAM Radeon R5 A255 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 780M Mac Edition 's Advantages
More VRAM (4GB vs 1024GB)
Larger VRAM bandwidth (160.0GB/s vs 64.00GB/s)
1152 additional rendering cores
AMD Radeon R5 A255 's Advantages
Boost Clock has increased by 18% (940MHz vs 797MHz)
Score
Benchmark
FP32 (float)
GeForce GTX 780M Mac Edition
+239%
2.448 TFLOPS
Radeon R5 A255
0.721 TFLOPS
Graphics Card
Nov 2013
Release Date
Jan 2014
GeForce 700M
Generation
All-In-One
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x8
Clock Speeds
771 MHz
Base Clock
925 MHz
797 MHz
Boost Clock
940 MHz
1250 MHz
Memory Clock
1000 MHz
Memory
4GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
128bit
160.0GB/s
Bandwidth
64.00GB/s
Render Config
-
Compute Units
6
-
-
-
1536
Shading Units
384
128
TMUs
24
32
ROPs
8
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
25.50 GPixel/s
Pixel Rate
7.520 GPixel/s
102.0 GTexel/s
Texture Rate
22.56 GTexel/s
-
-
-
2.448 TFLOPS
FP32 (float)
721.9 GFLOPS
102.0 GFLOPS
FP64 (double)
-
Board Design
122W
TDP
Unknown
-
-
-
No outputs
Outputs
Portable Device Dependent
-
-
-
Graphics Processor
GK104
GPU Name
Topaz
N14E-GTX-A2
GPU Variant
Topaz PRO
(216-0858030)
Kepler
Architecture
GCN 3.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
3.54 billion
Transistors
1.55 billion
294 mm²
Die Size
125 mm²
Graphics Features
12 (11_0)
DirectX
12 (12_0)
4.6
OpenGL
4.6
3.0
OpenCL
2.1
1.1
Vulkan
1.2.170
3.0
CUDA
-
5.1
Shader Model
6.5
