NVIDIA GeForce GT 640M LE vs NVIDIA GeForce 705A
We compared two Mobile platform GPUs: 2GB VRAM GeForce GT 640M LE and 1024MB VRAM GeForce 705A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 640M LE 's Advantages
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (50.24GB/s vs 14.40GB/s)
48 additional rendering cores
NVIDIA GeForce 705A 's Advantages
Released 2 years and 2 months late
Lower TDP (15W vs 32W)
Score
Benchmark
FP32 (float)
GeForce GT 640M LE
+217%
0.289 TFLOPS
GeForce 705A
0.091 TFLOPS
Graphics Card
May 2012
Release Date
Jul 2014
GeForce 600M
Generation
GeForce 700A
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
785 MHz
Memory Clock
900 MHz
Memory
2GB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
128bit
Memory Bus
64bit
50.24GB/s
Bandwidth
14.40GB/s
Render Config
-
-
-
2
SM Count
1
96
Shading Units
48
16
TMUs
8
4
ROPs
4
-
-
-
-
-
-
64 KB (per SM)
L1 Cache
64 KB (per SM)
256 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
3.012 GPixel/s
Pixel Rate
950.0 MPixel/s
12.05 GTexel/s
Texture Rate
3.800 GTexel/s
-
-
-
289.0 GFLOPS
FP32 (float)
91.20 GFLOPS
24.08 GFLOPS
FP64 (double)
7.600 GFLOPS
Board Design
32W
TDP
15W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GF108
GPU Name
GF119
-
GPU Variant
GF119 B1
Fermi
Architecture
Fermi 2.0
TSMC
Foundry
TSMC
40 nm
Process Size
40 nm
0.585 billion
Transistors
0.292 billion
116 mm²
Die Size
79 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
1.1
OpenCL
1.1
N/A
Vulkan
N/A
2.1
CUDA
2.1
5.1
Shader Model
5.1
