NVIDIA GeForce GT 640 vs ATI Radeon HD 5870 Mac Edition

VS

NVIDIA GeForce GT 640

ATI Radeon HD 5870 Mac Edition

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 1024MB VRAM Radeon HD 5870 Mac Edition 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 late

More VRAM (2GB vs 1024GB)

Lower TDP (65W vs 228W)

ATI Radeon HD 5870 Mac Edition 's Advantages

Larger VRAM bandwidth (153.0GB/s vs 28.51GB/s)

1216 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

Radeon HD 5870 Mac Edition +292%

2.72 TFLOPS

GeForce GT 640

VS

Radeon HD 5870 Mac Edition

Graphics Card

Jun 2012

Release Date

Jun 2010

GeForce 600

Generation

Evergreen

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

891 MHz

Memory Clock

1195 MHz

Memory

2GB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

256bit

28.51GB/s

Bandwidth

153.0GB/s

Render Config

-

Compute Units

20

-

384

Shading Units

1600

32

TMUs

80

16

ROPs

32

-

16 KB (per SMX)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

27.20 GPixel/s

28.86 GTexel/s

Texture Rate

68.00 GTexel/s

-

692.7 GFLOPS

FP32 (float)

2.720 TFLOPS

28.86 GFLOPS

FP64 (double)

544.0 GFLOPS

Board Design

65W

TDP

228W

250 W

Suggested PSU

550 W

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

Outputs

1x DVI 2x mini-DisplayPort 1.1

None

Power Connectors

2x 6-pin

Graphics Processor

GK107

GPU Name

Cypress

GK107-300-A2

GPU Variant

Cypress XT (215-0735033)

Kepler

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.27 billion

Transistors

2.154 billion

118 mm²

Die Size

334 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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