NVIDIA GeForce GT 640M Mac Edition vs NVIDIA GeForce 800A
We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 640M Mac Edition and 1024MB VRAM GeForce 800A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 640M Mac Edition 's Advantages
Larger VRAM bandwidth (40.00GB/s vs 14.40GB/s)
336 additional rendering cores
NVIDIA GeForce 800A 's Advantages
Released 1 years and 1 months late
More VRAM (1024GB vs 512GB)
Lower TDP (15W vs 32W)
Score
Benchmark
FP32 (float)
GeForce GT 640M Mac Edition
+528%
0.572 TFLOPS
GeForce 800A
0.091 TFLOPS
Graphics Card
Feb 2013
Release Date
Mar 2014
GeForce 600M
Generation
GeForce 800A
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1250 MHz
Memory Clock
900 MHz
Memory
512MB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
64bit
Memory Bus
64bit
40.00GB/s
Bandwidth
14.40GB/s
Render Config
-
-
-
-
SM Count
1
384
Shading Units
48
32
TMUs
8
8
ROPs
4
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
64 KB (per SM)
128 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
5.960 GPixel/s
Pixel Rate
950.0 MPixel/s
23.84 GTexel/s
Texture Rate
3.800 GTexel/s
-
-
-
572.2 GFLOPS
FP32 (float)
91.20 GFLOPS
23.84 GFLOPS
FP64 (double)
7.600 GFLOPS
Board Design
32W
TDP
15W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GK107
GPU Name
GF119
N13P-GS
GPU Variant
-
Kepler
Architecture
Fermi 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
1.27 billion
Transistors
0.292 billion
118 mm²
Die Size
79 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
2.1
5.1
Shader Model
5.1
