NVIDIA GeForce GTX 1080 Ti 10 GB vs NVIDIA GeForce GT 640 OEM Rebrand

VS

NVIDIA GeForce GTX 1080 Ti 10 GB

NVIDIA GeForce GT 640 OEM Rebrand

We compared two Desktop platform GPUs: 10GB VRAM GeForce GTX 1080 Ti 10 GB and 1536MB VRAM GeForce GT 640 OEM Rebrand 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 1536GB)

Larger VRAM bandwidth (440.3GB/s vs 38.40GB/s)

3056 additional rendering cores

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Lower TDP (75W vs 250W)

Score

Benchmark

FP32 (float)

GeForce GTX 1080 Ti 10 GB +2495%

10.77 TFLOPS

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GTX 1080 Ti 10 GB

VS

GeForce GT 640 OEM Rebrand

Graphics Card

Unknown

Release Date

Apr 2012

GeForce 10

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1582 MHz

Base Clock

-

1683 MHz

Boost Clock

-

1376 MHz

Memory Clock

800 MHz

Memory

10GB

Memory Size

1536MB

GDDR5X

Memory Type

DDR3

320bit

Memory Bus

192bit

440.3GB/s

Bandwidth

38.40GB/s

Render Config

-

25

SM Count

3

3200

Shading Units

144

200

TMUs

24

80

ROPs

24

-

48 KB (per SM)

L1 Cache

64 KB (per SM)

0 MB

L2 Cache

384 KB

-

Theoretical Performance

134.6 GPixel/s

Pixel Rate

4.320 GPixel/s

336.6 GTexel/s

Texture Rate

17.28 GTexel/s

168.3 GFLOPS

FP16 (half)

-

10.77 TFLOPS

FP32 (float)

414.7 GFLOPS

336.6 GFLOPS

FP64 (double)

34.56 GFLOPS

Board Design

250W

TDP

75W

600 W

Suggested PSU

250 W

1x HDMI 2.03x DisplayPort 1.4a

Outputs

2x DVI 1x mini-HDMI 1.3a

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

GP102

GPU Name

GF116

GP102-300-KA-A1

GPU Variant

GF116-150-A1

Pascal

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

16 nm

Process Size

40 nm

11.8 billion

Transistors

1.17 billion

471 mm²

Die Size

238 mm²

Graphics Features

12 (12_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

1.1

1.3

Vulkan

N/A

6.1

CUDA

2.1

6.8

Shader Model

5.1

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