NVIDIA GeForce GT 640M Mac Edition vs AMD Radeon R7 A260
We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 640M Mac Edition and 1024MB VRAM Radeon R7 A260 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R7 A260 's Advantages
Released 11 months late
Boost Clock980MHz
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (57.60GB/s vs 40.00GB/s)
Score
Benchmark
FP32 (float)
GeForce GT 640M Mac Edition
0.572 TFLOPS
Radeon R7 A260
+31%
0.752 TFLOPS
Graphics Card
Feb 2013
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
900 MHz
-
Boost Clock
980 MHz
1250 MHz
Memory Clock
900 MHz
Memory
512MB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
64bit
Memory Bus
128bit
40.00GB/s
Bandwidth
57.60GB/s
Render Config
-
Compute Units
6
-
-
-
384
Shading Units
384
32
TMUs
24
8
ROPs
8
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
128 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
5.960 GPixel/s
Pixel Rate
7.840 GPixel/s
23.84 GTexel/s
Texture Rate
23.52 GTexel/s
-
-
-
572.2 GFLOPS
FP32 (float)
752.6 GFLOPS
23.84 GFLOPS
FP64 (double)
-
Board Design
32W
TDP
Unknown
-
-
-
No outputs
Outputs
Portable Device Dependent
-
-
-
Graphics Processor
GK107
GPU Name
Topaz
N13P-GS
GPU Variant
Topaz XT
(216-0858020)
Kepler
Architecture
GCN 3.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.27 billion
Transistors
1.55 billion
118 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
