NVIDIA GeForce GTX 1080 Ti 10 GB vs NVIDIA GeForce GT 640 Rev. 2

VS

NVIDIA GeForce GTX 1080 Ti 10 GB

NVIDIA GeForce GT 640 Rev. 2

We compared two Desktop platform GPUs: 10GB VRAM GeForce GTX 1080 Ti 10 GB and 1024MB VRAM GeForce GT 640 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 1080 Ti 10 GB 's Advantages

Boost Clock1683MHz

More VRAM (10GB vs 1024GB)

Larger VRAM bandwidth (440.3GB/s vs 40.06GB/s)

2816 additional rendering cores

NVIDIA GeForce GT 640 Rev. 2 's Advantages

Lower TDP (49W vs 250W)

Score

Benchmark

FP32 (float)

GeForce GTX 1080 Ti 10 GB +1241%

10.77 TFLOPS

GeForce GT 640 Rev. 2

0.803 TFLOPS

GeForce GTX 1080 Ti 10 GB

VS

GeForce GT 640 Rev. 2

Graphics Card

Unknown

Release Date

May 2013

GeForce 10

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x8

Clock Speeds

1582 MHz

Base Clock

-

1683 MHz

Boost Clock

-

1376 MHz

Memory Clock

1252 MHz

Memory

10GB

Memory Size

1024MB

GDDR5X

Memory Type

GDDR5

320bit

Memory Bus

64bit

440.3GB/s

Bandwidth

40.06GB/s

Render Config

-

25

SM Count

-

3200

Shading Units

384

200

TMUs

32

80

ROPs

8

-

48 KB (per SM)

L1 Cache

16 KB (per SMX)

0 MB

L2 Cache

512 KB

-

Theoretical Performance

134.6 GPixel/s

Pixel Rate

8.368 GPixel/s

336.6 GTexel/s

Texture Rate

33.47 GTexel/s

168.3 GFLOPS

FP16 (half)

-

10.77 TFLOPS

FP32 (float)

803.3 GFLOPS

336.6 GFLOPS

FP64 (double)

33.47 GFLOPS

Board Design

250W

TDP

49W

600 W

Suggested PSU

200 W

1x HDMI 2.03x DisplayPort 1.4a

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

GP102

GPU Name

GK208

GP102-300-KA-A1

GPU Variant

GK208-400-A1

Pascal

Architecture

Kepler 2.0

TSMC

Foundry

TSMC

16 nm

Process Size

28 nm

11.8 billion

Transistors

1.02 billion

471 mm²

Die Size

87 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

6.1

CUDA

3.5

6.8

Shader Model

5.1

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