NVIDIA GeForce RTX 3080 vs NVIDIA GeForce GT 640 OEM

VS

NVIDIA GeForce RTX 3080

NVIDIA GeForce GT 640 OEM

We compared two Desktop platform GPUs: 10GB VRAM GeForce RTX 3080 and 2GB VRAM GeForce GT 640 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 3080 's Advantages

Released 8 years and 5 months late

Boost Clock1710MHz

More VRAM (10GB vs 2GB)

Larger VRAM bandwidth (760.3GB/s vs 28.51GB/s)

8320 additional rendering cores

NVIDIA GeForce GT 640 OEM 's Advantages

Lower TDP (50W vs 320W)

Score

Benchmark

FP32 (float)

GeForce RTX 3080 +4764%

29.77 TFLOPS

GeForce GT 640 OEM

0.612 TFLOPS

GeForce RTX 3080

VS

GeForce GT 640 OEM

Graphics Card

Sep 2020

Release Date

Apr 2012

GeForce 30

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1440 MHz

Base Clock

-

1710 MHz

Boost Clock

-

1188 MHz

Memory Clock

891 MHz

Memory

10GB

Memory Size

2GB

GDDR6X

Memory Type

DDR3

320bit

Memory Bus

128bit

760.3GB/s

Bandwidth

28.51GB/s

Render Config

-

68

SM Count

-

8704

Shading Units

384

272

TMUs

32

96

ROPs

16

272

Tensor Cores

-

68

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per SMX)

5 MB

L2 Cache

256 KB

-

Theoretical Performance

164.2 GPixel/s

Pixel Rate

6.376 GPixel/s

465.1 GTexel/s

Texture Rate

25.50 GTexel/s

29.77 TFLOPS

FP16 (half)

-

29.77 TFLOPS

FP32 (float)

612.1 GFLOPS

465.1 GFLOPS

FP64 (double)

25.50 GFLOPS

Board Design

320W

TDP

50W

700 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 Processor

GA102

GPU Name

GK107

GA102-200-KD-A1

GPU Variant

GK107-320-A2

Ampere

Architecture

Kepler

Samsung

Foundry

TSMC

8 nm

Process Size

28 nm

28.3 billion

Transistors

1.27 billion

628 mm²

Die Size

118 mm²

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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