Home GPU Comparison AMD Radeon R5 M255 vs NVIDIA GeForce GTX 680MX Mac Edition

AMD Radeon R5 M255 vs NVIDIA GeForce GTX 680MX Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM Radeon R5 M255 and 2GB VRAM GeForce GTX 680MX Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 M255 's Advantages
Released 2 years late
Boost Clock940MHz
NVIDIA GeForce GTX 680MX Mac Edition 's Advantages
Larger VRAM bandwidth (160.0GB/s vs 32.00GB/s)
1152 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon R5 M255
0.721 TFLOPS
GeForce GTX 680MX Mac Edition +206%
2.209 TFLOPS
VS

Graphics Card

Oct 2014
Release Date
Oct 2012
Gem System
Generation
GeForce 600M
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x16

Clock Speeds

925 MHz
Base Clock
-
940 MHz
Boost Clock
-
1000 MHz
Memory Clock
1250 MHz

Memory

2GB
Memory Size
2GB
DDR3
Memory Type
GDDR5
128bit
Memory Bus
256bit
32.00GB/s
Bandwidth
160.0GB/s

Render Config

6
Compute Units
-
-
-
-
384
Shading Units
1536
24
TMUs
128
8
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per SMX)
256 KB
L2 Cache
512 KB
-
-
-

Theoretical Performance

7.520 GPixel/s
Pixel Rate
23.01 GPixel/s
22.56 GTexel/s
Texture Rate
92.03 GTexel/s
721.9 GFLOPS
FP16 (half)
-
721.9 GFLOPS
FP32 (float)
2.209 TFLOPS
45.12 GFLOPS
FP64 (double)
92.03 GFLOPS

Board Design

Unknown
TDP
122W
-
-
-
Portable Device Dependent
Outputs
No outputs
-
-
-

Graphics Processor

Topaz
GPU Name
GK104
Topaz PRO (216-0858030)
GPU Variant
N13E-GTX2-A2
GCN 3.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.55 billion
Transistors
3.54 billion
125 mm²
Die Size
294 mm²

Graphics Features

12 (12_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.1
OpenCL
3.0
1.2.170
Vulkan
1.1
-
CUDA
3.0
6.5
Shader Model
5.1

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