AMD Radeon R9 M295X Mac Edition vs NVIDIA GeForce GT 420M
We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M295X Mac Edition and 512MB VRAM GeForce GT 420M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 M295X Mac Edition 's Advantages
Released 4 years and 2 months late
More VRAM (4GB vs 512GB)
Larger VRAM bandwidth (174.3GB/s vs 25.60GB/s)
1952 additional rendering cores
NVIDIA GeForce GT 420M 's Advantages
Lower TDP (23W vs 250W)
Score
Benchmark
FP32 (float)
Radeon R9 M295X Mac Edition
+1713%
3.482 TFLOPS
GeForce GT 420M
0.192 TFLOPS
Graphics Card
Nov 2014
Release Date
Sep 2010
Crystal System
Generation
GeForce 400M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1362 MHz
Memory Clock
800 MHz
Memory
4GB
Memory Size
512MB
GDDR5
Memory Type
DDR3
256bit
Memory Bus
128bit
174.3GB/s
Bandwidth
25.60GB/s
Render Config
32
Compute Units
-
-
SM Count
2
2048
Shading Units
96
128
TMUs
16
32
ROPs
4
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
64 KB (per SM)
512 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
27.20 GPixel/s
Pixel Rate
2.000 GPixel/s
108.8 GTexel/s
Texture Rate
8.000 GTexel/s
3.482 TFLOPS
FP16 (half)
-
3.482 TFLOPS
FP32 (float)
192.0 GFLOPS
217.6 GFLOPS
FP64 (double)
16.00 GFLOPS
Board Design
250W
TDP
23W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
Amethyst
GPU Name
GF108
Amethyst XT
GPU Variant
N11P-GE-A1
GCN 3.0
Architecture
Fermi
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
5 billion
Transistors
0.585 billion
366 mm²
Die Size
116 mm²
Graphics Features
12 (12_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.0
OpenCL
1.1
1.2
Vulkan
N/A
-
CUDA
2.1
6.3
Shader Model
5.1
