ATI Radeon HD 5830 vs NVIDIA GeForce GT 640 OEM Rebrand

VS

ATI Radeon HD 5830

NVIDIA GeForce GT 640 OEM Rebrand

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 5830 and 1536MB VRAM GeForce GT 640 OEM Rebrand to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 5830 's Advantages

Larger VRAM bandwidth (128.0GB/s vs 38.40GB/s)

976 additional rendering cores

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Released 2 years and 2 months late

More VRAM (1536GB vs 1024GB)

Lower TDP (75W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 5830 +331%

1.792 TFLOPS

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

Radeon HD 5830

VS

GeForce GT 640 OEM Rebrand

Graphics Card

Feb 2010

Release Date

Apr 2012

Evergreen

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

1536MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

192bit

128.0GB/s

Bandwidth

38.40GB/s

Render Config

14

Compute Units

-

SM Count

3

1120

Shading Units

144

56

TMUs

24

16

ROPs

24

-

8 KB (per CU)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

384 KB

-

Theoretical Performance

12.80 GPixel/s

Pixel Rate

4.320 GPixel/s

44.80 GTexel/s

Texture Rate

17.28 GTexel/s

-

1.792 TFLOPS

FP32 (float)

414.7 GFLOPS

358.4 GFLOPS

FP64 (double)

34.56 GFLOPS

Board Design

175W

TDP

75W

450 W

Suggested PSU

250 W

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

Outputs

2x DVI 1x mini-HDMI 1.3a

2x 6-pin

Power Connectors

None

Graphics Processor

Cypress

GPU Name

GF116

Cypress LE (215-0735047)

GPU Variant

GF116-150-A1

TeraScale 2

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

2.154 billion

Transistors

1.17 billion

334 mm²

Die Size

238 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

2.1

5.0

Shader Model

5.1

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