Home GPU Comparison AMD Radeon R9 M485X vs NVIDIA GeForce GTX 680MX Mac Edition

AMD Radeon R9 M485X vs NVIDIA GeForce GTX 680MX Mac Edition

We compared two Mobile platform GPUs: 8GB VRAM Radeon R9 M485X 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 R9 M485X 's Advantages
Released 3 years and 7 months late
More VRAM (8GB vs 2GB)
512 additional rendering cores
NVIDIA GeForce GTX 680MX Mac Edition 's Advantages
Lower TDP (122W vs 250W)

Score

Benchmark

FP32 (float)
Radeon R9 M485X +34%
2.961 TFLOPS
GeForce GTX 680MX Mac Edition
2.209 TFLOPS
VS

Graphics Card

May 2016
Release Date
Oct 2012
Crystal System
Generation
GeForce 600M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x16

Clock Speeds

-
-
-
-
-
-
1250 MHz
Memory Clock
1250 MHz

Memory

8GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
160.0GB/s
Bandwidth
160.0GB/s

Render Config

32
Compute Units
-
-
-
-
2048
Shading Units
1536
128
TMUs
128
32
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per SMX)
512 KB
L2 Cache
512 KB
-
-
-

Theoretical Performance

23.14 GPixel/s
Pixel Rate
23.01 GPixel/s
92.54 GTexel/s
Texture Rate
92.03 GTexel/s
2.961 TFLOPS
FP16 (half)
-
2.961 TFLOPS
FP32 (float)
2.209 TFLOPS
185.1 GFLOPS
FP64 (double)
92.03 GFLOPS

Board Design

250W
TDP
122W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
-

Graphics Processor

Amethyst
GPU Name
GK104
Amethyst XT
GPU Variant
N13E-GTX2-A2
GCN 3.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
5 billion
Transistors
3.54 billion
366 mm²
Die Size
294 mm²

Graphics Features

12 (12_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.0
OpenCL
3.0
1.2
Vulkan
1.1
-
CUDA
3.0
6.3
Shader Model
5.1

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