NVIDIA GeForce GTX 950 Low Power vs NVIDIA GeForce GT 640
We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 950 Low Power and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 950 Low Power 's Advantages
Released 3 years and 9 months late
Boost Clock1190MHz
Larger VRAM bandwidth (105.8GB/s vs 28.51GB/s)
384 additional rendering cores
NVIDIA GeForce GT 640 's Advantages
Lower TDP (65W vs 75W)
Score
Benchmark
FP32 (float)
GeForce GTX 950 Low Power
+163%
1.828 TFLOPS
GeForce GT 640
0.693 TFLOPS
Blender
GeForce GTX 950 Low Power
+459%
179
GeForce GT 640
32
OctaneBench
GeForce GTX 950 Low Power
+450%
44
GeForce GT 640
8
Graphics Card
Mar 2016
Release Date
Jun 2012
GeForce 900
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
1026 MHz
Base Clock
-
1190 MHz
Boost Clock
-
1653 MHz
Memory Clock
891 MHz
Memory
2GB
Memory Size
2GB
GDDR5
Memory Type
DDR3
128bit
Memory Bus
128bit
105.8GB/s
Bandwidth
28.51GB/s
Render Config
-
-
-
-
-
-
768
Shading Units
384
48
TMUs
32
32
ROPs
16
-
-
-
-
-
-
48 KB (per SMM)
L1 Cache
16 KB (per SMX)
1024 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
38.08 GPixel/s
Pixel Rate
7.216 GPixel/s
57.12 GTexel/s
Texture Rate
28.86 GTexel/s
-
-
-
1.828 TFLOPS
FP32 (float)
692.7 GFLOPS
57.12 GFLOPS
FP64 (double)
28.86 GFLOPS
Board Design
75W
TDP
65W
250 W
Suggested PSU
250 W
1x DVI
1x HDMI 2.0
3x DisplayPort 1.4a
Outputs
1x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
None
Power Connectors
None
Graphics Processor
GM206
GPU Name
GK107
GM206-251-A1
GPU Variant
GK107-300-A2
Maxwell 2.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
2.94 billion
Transistors
1.27 billion
228 mm²
Die Size
118 mm²
Graphics Features
12 (12_1)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.3
Vulkan
1.1
5.2
CUDA
3.0
6.4
Shader Model
5.1
