NVIDIA GeForce GT 640M Mac Edition vs NVIDIA GeForce GT 320M
We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 640M Mac Edition and 1024MB VRAM GeForce GT 320M 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
Released 2 years and 11 months late
Larger VRAM bandwidth (40.00GB/s vs 25.28GB/s)
360 additional rendering cores
NVIDIA GeForce GT 320M 's Advantages
More VRAM (1024GB vs 512GB)
Lower TDP (23W vs 32W)
Score
Benchmark
FP32 (float)
GeForce GT 640M Mac Edition
+979%
0.572 TFLOPS
GeForce GT 320M
0.053 TFLOPS
Graphics Card
Feb 2013
Release Date
Mar 2010
GeForce 600M
Generation
GeForce 300M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1250 MHz
Memory Clock
790 MHz
Memory
512MB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
64bit
Memory Bus
128bit
40.00GB/s
Bandwidth
25.28GB/s
Render Config
-
-
-
-
SM Count
3
384
Shading Units
24
32
TMUs
8
8
ROPs
8
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
-
128 KB
L2 Cache
64 KB
-
-
-
Theoretical Performance
5.960 GPixel/s
Pixel Rate
4.000 GPixel/s
23.84 GTexel/s
Texture Rate
4.000 GTexel/s
-
-
-
572.2 GFLOPS
FP32 (float)
52.80 GFLOPS
23.84 GFLOPS
FP64 (double)
-
Board Design
32W
TDP
23W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GK107
GPU Name
GT216
N13P-GS
GPU Variant
-
Kepler
Architecture
Tesla 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
1.27 billion
Transistors
0.486 billion
118 mm²
Die Size
100 mm²
Graphics Features
12 (11_0)
DirectX
11.1 (10_1)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
1.2
5.1
Shader Model
4.1
