NVIDIA GeForce GT 640 vs NVIDIA GeForce GTX 480

VS

NVIDIA GeForce GT 640

NVIDIA GeForce GTX 480

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 1536MB VRAM GeForce GTX 480 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages

Released 2 years and 3 months late

More VRAM (2GB vs 1536GB)

Lower TDP (65W vs 250W)

NVIDIA GeForce GTX 480 's Advantages

Larger VRAM bandwidth (177.4GB/s vs 28.51GB/s)

96 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

GeForce GTX 480 +94%

1.345 TFLOPS

GeForce GT 640

VS

GeForce GTX 480

Graphics Card

Jun 2012

Release Date

Mar 2010

GeForce 600

Generation

GeForce 400

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

891 MHz

Memory Clock

924 MHz

Memory

2GB

Memory Size

1536MB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

384bit

28.51GB/s

Bandwidth

177.4GB/s

Render Config

-

SM Count

15

384

Shading Units

480

32

TMUs

60

16

ROPs

48

-

16 KB (per SMX)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

768 KB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

21.03 GPixel/s

28.86 GTexel/s

Texture Rate

42.06 GTexel/s

-

692.7 GFLOPS

FP32 (float)

1345 GFLOPS

28.86 GFLOPS

FP64 (double)

168.1 GFLOPS

Board Design

65W

TDP

250W

250 W

Suggested PSU

600 W

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

Outputs

2x DVI 1x mini-HDMI 1.3a

None

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GK107

GPU Name

GF100

GK107-300-A2

GPU Variant

GF100-375-A3

Kepler

Architecture

Fermi

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.27 billion

Transistors

3.1 billion

118 mm²

Die Size

529 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

2.0

5.1

Shader Model

5.1

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