NVIDIA GeForce GT 640 vs ATI Radeon HD 5470

VS

NVIDIA GeForce GT 640

ATI Radeon HD 5470

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 512MB VRAM Radeon HD 5470 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (28.51GB/s vs 6.400GB/s)

304 additional rendering cores

ATI Radeon HD 5470 's Advantages

Lower TDP (19W vs 65W)

Score

Benchmark

FP32 (float)

GeForce GT 640 +566%

0.693 TFLOPS

Radeon HD 5470

0.104 TFLOPS

GeForce GT 640

VS

Radeon HD 5470

Graphics Card

Jun 2012

Release Date

Feb 2012

GeForce 600

Generation

Evergreen

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

891 MHz

Memory Clock

400 MHz

Memory

2GB

Memory Size

512MB

DDR3

Memory Type

GDDR3

128bit

Memory Bus

64bit

28.51GB/s

Bandwidth

6.400GB/s

Render Config

-

Compute Units

2

-

384

Shading Units

80

32

TMUs

8

16

ROPs

4

-

16 KB (per SMX)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

2.600 GPixel/s

28.86 GTexel/s

Texture Rate

5.200 GTexel/s

-

692.7 GFLOPS

FP32 (float)

104.0 GFLOPS

28.86 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

19W

250 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

None

Power Connectors

None

Graphics Processor

GK107

GPU Name

Cedar

GK107-300-A2

GPU Variant

Cedar PRO

Kepler

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.27 billion

Transistors

0.292 billion

118 mm²

Die Size

59 mm²

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

3.0

OpenCL

1.2

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

5.0

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