NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce GTX 1080 11Gbps

VS

NVIDIA GeForce GT 640 OEM Rebrand

NVIDIA GeForce GTX 1080 11Gbps

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 8GB VRAM GeForce GTX 1080 11Gbps 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 180W)

NVIDIA GeForce GTX 1080 11Gbps 's Advantages

Released 5 years late

Boost Clock1733MHz

More VRAM (8GB vs 1536GB)

Larger VRAM bandwidth (352.3GB/s vs 38.40GB/s)

2416 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GTX 1080 11Gbps +2038%

8.873 TFLOPS

GeForce GT 640 OEM Rebrand

VS

GeForce GTX 1080 11Gbps

Graphics Card

Apr 2012

Release Date

Apr 2017

GeForce 600

Generation

GeForce 10

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1607 MHz

-

Boost Clock

1733 MHz

800 MHz

Memory Clock

1376 MHz

Memory

1536MB

Memory Size

8GB

DDR3

Memory Type

GDDR5X

192bit

Memory Bus

256bit

38.40GB/s

Bandwidth

352.3GB/s

Render Config

-

3

SM Count

20

144

Shading Units

2560

24

TMUs

160

24

ROPs

64

-

64 KB (per SM)

L1 Cache

48 KB (per SM)

384 KB

L2 Cache

2 MB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

110.9 GPixel/s

17.28 GTexel/s

Texture Rate

277.3 GTexel/s

-

FP16 (half)

138.6 GFLOPS

414.7 GFLOPS

FP32 (float)

8.873 TFLOPS

34.56 GFLOPS

FP64 (double)

277.3 GFLOPS

Board Design

75W

TDP

180W

250 W

Suggested PSU

450 W

2x DVI 1x mini-HDMI 1.3a

Outputs

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

None

Power Connectors

1x 8-pin

Graphics Processor

GF116

GPU Name

GP104

GF116-150-A1

GPU Variant

GP104-410-A1

Fermi 2.0

Architecture

Pascal

TSMC

Foundry

TSMC

40 nm

Process Size

16 nm

1.17 billion

Transistors

7.2 billion

238 mm²

Die Size

314 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

6.1

5.1

Shader Model

6.4

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