GeForce GT 640M Mac Edition vs GeForce 805A
We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 640M Mac Edition and 1024MB VRAM GeForce 805A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GT 640M Mac Edition 's Advantages
Larger VRAM bandwidth (40.00GB/s vs 16.02GB/s)
192 additional rendering cores
GeForce 805A 's Advantages
Released 1 years and 5 months late
Boost Clock758MHz
More VRAM (1024GB vs 512GB)
Lower TDP (15W vs 32W)
Score
Benchmark
FP32 (float)
GeForce GT 640M Mac Edition
+96%
572
GeForce 805A
291
Graphics Card
Feb 2013
Release Date
Jul 2014
GeForce 600M
Generation
GeForce 800A
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x8
Clock Speeds
-
Base Clock
719 MHz
-
Boost Clock
758 MHz
1250 MHz
Memory Clock
1001 MHz
Memory
512MB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
64bit
Memory Bus
64bit
40.00GB/s
Bandwidth
16.02GB/s
Render Config
384
Shading Units
192
32
TMUs
16
8
ROPs
8
16 KB (per SMX)
L1 Cache
16 KB (per SMX)
128 KB
L2 Cache
512 KB
Theoretical Performance
5.960 GPixel/s
Pixel Rate
6.064 GPixel/s
23.84 GTexel/s
Texture Rate
12.13 GTexel/s
572.2 GFLOPS
FP32 (float)
291.1 GFLOPS
23.84 GFLOPS
FP64 (double)
12.13 GFLOPS
Board Design
32W
TDP
15W
No outputs
Outputs
No outputs
Graphics Processor
GK107
GPU Name
GK208
N13P-GS
GPU Variant
-
Kepler
Architecture
Kepler 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.27 billion
Transistors
1.02 billion
118 mm²
Die Size
87 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.1
Vulkan
1.1
3.0
CUDA
3.5
5.1
Shader Model
5.1
