NVIDIA GeForce GT 640 vs NVIDIA GeForce GT 120 Mac Edition
We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 512MB VRAM GeForce GT 120 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 640 's Advantages
Released 3 years and 5 months late
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (28.51GB/s vs 25.60GB/s)
352 additional rendering cores
NVIDIA GeForce GT 120 Mac Edition 's Advantages
Lower TDP (50W vs 65W)
Score
Benchmark
FP32 (float)
GeForce GT 640
+670%
0.693 TFLOPS
GeForce GT 120 Mac Edition
0.09 TFLOPS
Graphics Card
Jun 2012
Release Date
Jan 2009
GeForce 600
Generation
GeForce 100
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
891 MHz
Memory Clock
800 MHz
Memory
2GB
Memory Size
512MB
DDR3
Memory Type
GDDR3
128bit
Memory Bus
128bit
28.51GB/s
Bandwidth
25.60GB/s
Render Config
-
-
-
-
SM Count
4
384
Shading Units
32
32
TMUs
16
16
ROPs
8
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
-
256 KB
L2 Cache
32 KB
-
-
-
Theoretical Performance
7.216 GPixel/s
Pixel Rate
4.400 GPixel/s
28.86 GTexel/s
Texture Rate
8.800 GTexel/s
-
-
-
692.7 GFLOPS
FP32 (float)
89.60 GFLOPS
28.86 GFLOPS
FP64 (double)
-
Board Design
65W
TDP
50W
250 W
Suggested PSU
250 W
1x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
Outputs
1x DVI
1x mini-DisplayPort
None
Power Connectors
None
Graphics Processor
GK107
GPU Name
G96C
GK107-300-A2
GPU Variant
-
Kepler
Architecture
Tesla
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
1.27 billion
Transistors
0.314 billion
118 mm²
Die Size
121 mm²
Graphics Features
12 (11_0)
DirectX
11.1 (10_0)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
1.1
5.1
Shader Model
4.0
