NVIDIA GeForce GT 640 OEM Rebrand vs ATI Radeon HD 5450

VS

NVIDIA GeForce GT 640 OEM Rebrand

ATI Radeon HD 5450

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 512MB VRAM Radeon HD 5450 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Released 2 years and 2 months late

More VRAM (1536GB vs 512GB)

Larger VRAM bandwidth (38.40GB/s vs 6.400GB/s)

64 additional rendering cores

ATI Radeon HD 5450 's Advantages

Lower TDP (19W vs 75W)

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand +299%

0.415 TFLOPS

Radeon HD 5450

0.104 TFLOPS

GeForce GT 640 OEM Rebrand

VS

Radeon HD 5450

Graphics Card

Apr 2012

Release Date

Feb 2010

GeForce 600

Generation

Evergreen

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

400 MHz

Memory

1536MB

Memory Size

512MB

DDR3

Memory Type

DDR2

192bit

Memory Bus

64bit

38.40GB/s

Bandwidth

6.400GB/s

Render Config

-

Compute Units

2

3

SM Count

-

144

Shading Units

80

24

TMUs

8

24

ROPs

4

-

64 KB (per SM)

L1 Cache

8 KB (per CU)

384 KB

L2 Cache

128 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

2.600 GPixel/s

17.28 GTexel/s

Texture Rate

5.200 GTexel/s

-

414.7 GFLOPS

FP32 (float)

104.0 GFLOPS

34.56 GFLOPS

FP64 (double)

-

Board Design

75W

TDP

19W

250 W

Suggested PSU

200 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

None

Power Connectors

None

Graphics Processor

GF116

GPU Name

Cedar

GF116-150-A1

GPU Variant

Cedar PRO

Fermi 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.17 billion

Transistors

0.292 billion

238 mm²

Die Size

59 mm²

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

2.1

CUDA

-

5.1

Shader Model

5.0

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