NVIDIA GeForce GT 640 vs NVIDIA GeForce GTX 950 OEM

VS

NVIDIA GeForce GT 640

NVIDIA GeForce GTX 950 OEM

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 4GB VRAM GeForce GTX 950 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 7 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 GT 640

0.693 TFLOPS

GeForce GTX 950 OEM +255%

2.464 TFLOPS

GeForce GT 640

VS

GeForce GTX 950 OEM

Graphics Card

Jun 2012

Release Date

Jan 2016

GeForce 600

Generation

GeForce 900

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

937 MHz

-

Boost Clock

1203 MHz

891 MHz

Memory Clock

1253 MHz

Memory

2GB

Memory Size

4GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

128bit

28.51GB/s

Bandwidth

80.19GB/s

Render Config

-

384

Shading Units

1024

32

TMUs

64

16

ROPs

32

-

16 KB (per SMX)

L1 Cache

48 KB (per SMM)

256 KB

L2 Cache

1024 KB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

38.50 GPixel/s

28.86 GTexel/s

Texture Rate

76.99 GTexel/s

-

692.7 GFLOPS

FP32 (float)

2.464 TFLOPS

28.86 GFLOPS

FP64 (double)

76.99 GFLOPS

Board Design

65W

TDP

Unknown

250 W

Suggested PSU

200 W

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

GK107

GPU Name

GM206S

GK107-300-A2

GPU Variant

950 OEM

Kepler

Architecture

Maxwell 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

2.94 billion

118 mm²

Die Size

228 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_1)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.0

CUDA

5.2

5.1

Shader Model

6.7

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