NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce GTX 950

VS

NVIDIA GeForce GT 640 OEM Rebrand

NVIDIA GeForce GTX 950

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 2GB VRAM GeForce GTX 950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Lower TDP (75W vs 90W)

NVIDIA GeForce GTX 950 's Advantages

Released 3 years and 4 months late

Boost Clock1188MHz

More VRAM (2GB vs 1536GB)

Larger VRAM bandwidth (105.8GB/s vs 38.40GB/s)

624 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GTX 950 +339%

1.825 TFLOPS

GeForce GT 640 OEM Rebrand

VS

GeForce GTX 950

Graphics Card

Apr 2012

Release Date

Aug 2015

GeForce 600

Generation

GeForce 900

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1024 MHz

-

Boost Clock

1188 MHz

800 MHz

Memory Clock

1653 MHz

Memory

1536MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

192bit

Memory Bus

128bit

38.40GB/s

Bandwidth

105.8GB/s

Render Config

-

3

SM Count

-

144

Shading Units

768

24

TMUs

48

24

ROPs

32

-

64 KB (per SM)

L1 Cache

48 KB (per SMM)

384 KB

L2 Cache

1024 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

38.02 GPixel/s

17.28 GTexel/s

Texture Rate

57.02 GTexel/s

-

414.7 GFLOPS

FP32 (float)

1.825 TFLOPS

34.56 GFLOPS

FP64 (double)

57.02 GFLOPS

Board Design

75W

TDP

90W

250 W

Suggested PSU

250 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x DVI 1x HDMI 2.0 3x DisplayPort 1.4a

None

Power Connectors

1x 6-pin

Graphics Processor

GF116

GPU Name

GM206

GF116-150-A1

GPU Variant

GM206-250-A1

Fermi 2.0

Architecture

Maxwell 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.17 billion

Transistors

2.94 billion

238 mm²

Die Size

228 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_1)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.3

2.1

CUDA

5.2

5.1

Shader Model

6.4

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