NVIDIA GeForce GTX 645 OEM vs ATI Radeon HD 5670 640SP Edition

VS

NVIDIA GeForce GTX 645 OEM

ATI Radeon HD 5670 640SP Edition

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 512MB VRAM Radeon HD 5670 640SP 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 9 months late

More VRAM (1024GB vs 512GB)

ATI Radeon HD 5670 640SP Edition 's Advantages

64 additional rendering cores

Lower TDP (64W vs 65W)

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM

0.949 TFLOPS

Radeon HD 5670 640SP Edition +1%

0.96 TFLOPS

GeForce GTX 645 OEM

VS

Radeon HD 5670 640SP Edition

Graphics Card

Apr 2013

Release Date

Jul 2010

GeForce 600

Generation

Evergreen

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

64.00GB/s

Render Config

-

Compute Units

8

-

576

Shading Units

640

48

TMUs

32

16

ROPs

8

-

16 KB (per SMX)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

6.000 GPixel/s

39.55 GTexel/s

Texture Rate

24.00 GTexel/s

-

949.2 GFLOPS

FP32 (float)

960.0 GFLOPS

39.55 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

64W

250 W

Suggested PSU

250 W

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

Outputs

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

None

Power Connectors

None

Graphics Processor

GK106

GPU Name

Juniper

GK106-200-A1

GPU Variant

Juniper CE

Kepler

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.54 billion

Transistors

1.04 billion

221 mm²

Die Size

166 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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