NVIDIA GeForce GT 640 vs NVIDIA GeForce RTX 5080

VS

NVIDIA GeForce GT 640

NVIDIA GeForce RTX 5080

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 16GB VRAM GeForce RTX 5080 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 5080 's Advantages

Released 12 years and 7 months late

Boost Clock2520MHz

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (973.8GB/s vs 28.51GB/s)

10368 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

GeForce RTX 5080 +7719%

54.19 TFLOPS

GeForce GT 640

VS

GeForce RTX 5080

Graphics Card

Jun 2012

Release Date

Jan 2025

GeForce 600

Generation

GeForce 50

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 5.0 x16

Clock Speeds

-

Base Clock

2235 MHz

-

Boost Clock

2520 MHz

891 MHz

Memory Clock

2400 MHz

Memory

2GB

Memory Size

16GB

DDR3

Memory Type

GDDR7

128bit

Memory Bus

256bit

28.51GB/s

Bandwidth

973.8GB/s

Render Config

-

SM Count

84

384

Shading Units

10752

32

TMUs

336

16

ROPs

128

-

Tensor Cores

336

-

RT Cores

84

16 KB (per SMX)

L1 Cache

128 KB (per SM)

256 KB

L2 Cache

64 MB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

322.6 GPixel/s

28.86 GTexel/s

Texture Rate

846.7 GTexel/s

-

FP16 (half)

54.19 TFLOPS

692.7 GFLOPS

FP32 (float)

54.19 TFLOPS

28.86 GFLOPS

FP64 (double)

846.7 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 2.1a

None

Power Connectors

1x 16-pin

Graphics Processor

GK107

GPU Name

GB203

GK107-300-A2

GPU Variant

GB203-400-A1

Kepler

Architecture

Blackwell 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

0

1.27 billion

Transistors

Unknown

118 mm²

Die Size

377 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

10.1

5.1

Shader Model

6.8

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