NVIDIA GeForce RTX 3070 vs NVIDIA GeForce GT 640

VS

NVIDIA GeForce RTX 3070 NVIDIA GeForce GT 640

We compared two Desktop platform GPUs: 8GB VRAM GeForce RTX 3070 and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 3070 's Advantages

Released 8 years and 3 months late

Boost Clock1725MHz

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (448.0GB/s vs 28.51GB/s)

5504 additional rendering cores

NVIDIA GeForce GT 640 's Advantages

Lower TDP (65W vs 220W)

Score

Benchmark

FP32 (float)

GeForce RTX 3070 +2830%

20.31 TFLOPS

GeForce GT 640

0.693 TFLOPS

GeForce RTX 3070

VS

GeForce GT 640

Graphics Card

Sep 2020

Release Date

Jun 2012

GeForce 30

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1500 MHz

Base Clock

-

1725 MHz

Boost Clock

-

1750 MHz

Memory Clock

891 MHz

Memory

8GB

Memory Size

2GB

GDDR6

Memory Type

DDR3

256bit

Memory Bus

128bit

448.0GB/s

Bandwidth

28.51GB/s

Render Config

46

SM Count

-

Compute Units

-

5888

Shading Units

384

184

TMUs

32

96

ROPs

16

184

Tensor Cores

-

46

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per SMX)

4 MB

L2 Cache

256 KB

Theoretical Performance

165.6 GPixel/s

Pixel Rate

7.216 GPixel/s

317.4 GTexel/s

Texture Rate

28.86 GTexel/s

20.31 TFLOPS

FP16 (half)

-

20.31 TFLOPS

FP32 (float)

692.7 GFLOPS

317.4 GFLOPS

FP64 (double)

28.86 GFLOPS

Graphics Processor

GA104

GPU Name

GK107

GA104-300-A1

GPU Variant

GK107-300-A2

Ampere

Architecture

Kepler

Samsung

Foundry

TSMC

8 nm

Process Size

28 nm

17.4 billion

Transistors

1.27 billion

392 mm²

Die Size

118 mm²

Board Design

220W

TDP

65W

550 W

Suggested PSU

250 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

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

1x 12-pin

Power Connectors

None

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.1

8.6

CUDA

3.0

6.6

Shader Model

5.1

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