NVIDIA GeForce GTX 645 OEM vs ATI Radeon HD 5870 Mac Edition

VS

NVIDIA GeForce GTX 645 OEM

ATI Radeon HD 5870 Mac Edition

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM 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 GTX 645 OEM 's Advantages

Released 2 years and 10 months late

Lower TDP (65W vs 228W)

ATI Radeon HD 5870 Mac Edition 's Advantages

Larger VRAM bandwidth (153.0GB/s vs 64.00GB/s)

1024 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM

0.949 TFLOPS

Radeon HD 5870 Mac Edition +186%

2.72 TFLOPS

GeForce GTX 645 OEM

VS

Radeon HD 5870 Mac Edition

Graphics Card

Apr 2013

Release Date

Jun 2010

GeForce 600

Generation

Evergreen

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

1195 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

153.0GB/s

Render Config

-

Compute Units

20

-

576

Shading Units

1600

48

TMUs

80

16

ROPs

32

-

16 KB (per SMX)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

27.20 GPixel/s

39.55 GTexel/s

Texture Rate

68.00 GTexel/s

-

949.2 GFLOPS

FP32 (float)

2.720 TFLOPS

39.55 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

GK106

GPU Name

Cypress

GK106-200-A1

GPU Variant

Cypress XT (215-0735033)

Kepler

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.54 billion

Transistors

2.154 billion

221 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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