GeForce GTX 680MX Mac Edition vs Radeon R5 A255
We compared two Mobile platform GPUs: 2GB VRAM GeForce GTX 680MX 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
GeForce GTX 680MX Mac Edition 's Advantages
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (160.0GB/s vs 64.00GB/s)
1152 additional rendering cores
Radeon R5 A255 's Advantages
Released 1 years and 3 months late
Boost Clock940MHz
Score
Benchmark
FP32 (float)
GeForce GTX 680MX Mac Edition
+206%
2209
Radeon R5 A255
721
Graphics Card
Oct 2012
Release Date
Jan 2014
GeForce 600M
Generation
All-In-One
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x8
Clock Speeds
-
Base Clock
925 MHz
-
Boost Clock
940 MHz
1250 MHz
Memory Clock
1000 MHz
Memory
2GB
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
23.01 GPixel/s
Pixel Rate
7.520 GPixel/s
92.03 GTexel/s
Texture Rate
22.56 GTexel/s
2.209 TFLOPS
FP32 (float)
721.9 GFLOPS
92.03 GFLOPS
FP64 (double)
-
Board Design
122W
TDP
Unknown
No outputs
Outputs
Portable Device Dependent
Graphics Processor
GK104
GPU Name
Topaz
N13E-GTX2-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