NVIDIA GeForce GT 640 vs NVIDIA GeForce RTX 3090

VS

NVIDIA GeForce GT 640

NVIDIA GeForce RTX 3090

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 24GB VRAM GeForce RTX 3090 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages

Lower TDP (65W vs 350W)

NVIDIA GeForce RTX 3090 's Advantages

Released 8 years and 3 months late

Boost Clock1695MHz

More VRAM (24GB vs 2GB)

Larger VRAM bandwidth (936.2GB/s vs 28.51GB/s)

10112 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

GeForce RTX 3090 +5034%

35.58 TFLOPS

GeForce GT 640

VS

GeForce RTX 3090

Graphics Card

Jun 2012

Release Date

Sep 2020

GeForce 600

Generation

GeForce 30

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1395 MHz

-

Boost Clock

1695 MHz

891 MHz

Memory Clock

1219 MHz

Memory

2GB

Memory Size

24GB

DDR3

Memory Type

GDDR6X

128bit

Memory Bus

384bit

28.51GB/s

Bandwidth

936.2GB/s

Render Config

-

SM Count

82

384

Shading Units

10496

32

TMUs

328

16

ROPs

112

-

Tensor Cores

328

-

RT Cores

82

16 KB (per SMX)

L1 Cache

128 KB (per SM)

256 KB

L2 Cache

6 MB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

189.8 GPixel/s

28.86 GTexel/s

Texture Rate

556.0 GTexel/s

-

FP16 (half)

35.58 TFLOPS

692.7 GFLOPS

FP32 (float)

35.58 TFLOPS

28.86 GFLOPS

FP64 (double)

556.0 GFLOPS

Board Design

65W

TDP

350W

250 W

Suggested PSU

750 W

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

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

None

Power Connectors

1x 12-pin

Graphics Processor

GK107

GPU Name

GA102

GK107-300-A2

GPU Variant

GA102-300-A1

Kepler

Architecture

Ampere

TSMC

Foundry

Samsung

28 nm

Process Size

8 nm

1.27 billion

Transistors

28.3 billion

118 mm²

Die Size

628 mm²

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.0

CUDA

8.6

5.1

Shader Model

6.6

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