NVIDIA GeForce GTX 950 OEM vs NVIDIA GeForce GT 640 OEM
We compared two Desktop platform GPUs: 4GB VRAM GeForce GTX 950 OEM and 2GB VRAM GeForce GT 640 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 950 OEM 's Advantages
Released 3 years and 9 months late
Boost Clock1203MHz
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (80.19GB/s vs 28.51GB/s)
640 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GTX 950 OEM
+302%
2.464 TFLOPS
GeForce GT 640 OEM
0.612 TFLOPS
Graphics Card
Jan 2016
Release Date
Apr 2012
GeForce 900
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
937 MHz
Base Clock
-
1203 MHz
Boost Clock
-
1253 MHz
Memory Clock
891 MHz
Memory
4GB
Memory Size
2GB
GDDR5
Memory Type
DDR3
128bit
Memory Bus
128bit
80.19GB/s
Bandwidth
28.51GB/s
Render Config
-
-
-
-
-
-
1024
Shading Units
384
64
TMUs
32
32
ROPs
16
-
-
-
-
-
-
48 KB (per SMM)
L1 Cache
16 KB (per SMX)
1024 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
38.50 GPixel/s
Pixel Rate
6.376 GPixel/s
76.99 GTexel/s
Texture Rate
25.50 GTexel/s
-
-
-
2.464 TFLOPS
FP32 (float)
612.1 GFLOPS
76.99 GFLOPS
FP64 (double)
25.50 GFLOPS
Board Design
Unknown
TDP
50W
200 W
Suggested PSU
250 W
No outputs
Outputs
1x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
None
Power Connectors
None
Graphics Processor
GM206S
GPU Name
GK107
950 OEM
GPU Variant
GK107-320-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
6.7
Shader Model
5.1
