NVIDIA GeForce GTX 645 OEM vs NVIDIA GeForce GTX 670

VS

NVIDIA GeForce GTX 645 OEM

NVIDIA GeForce GTX 670

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 2GB VRAM GeForce GTX 670 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 11 months late

Lower TDP (65W vs 170W)

NVIDIA GeForce GTX 670 's Advantages

Boost Clock980MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (192.3GB/s vs 64.00GB/s)

768 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM

0.949 TFLOPS

GeForce GTX 670 +177%

2.634 TFLOPS

GeForce GTX 645 OEM

VS

GeForce GTX 670

Graphics Card

Apr 2013

Release Date

May 2012

GeForce 600

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

915 MHz

-

Boost Clock

980 MHz

1000 MHz

Memory Clock

1502 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

192.3GB/s

Render Config

-

576

Shading Units

1344

48

TMUs

112

16

ROPs

32

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

27.44 GPixel/s

39.55 GTexel/s

Texture Rate

109.8 GTexel/s

-

949.2 GFLOPS

FP32 (float)

2.634 TFLOPS

39.55 GFLOPS

FP64 (double)

109.8 GFLOPS

Board Design

65W

TDP

170W

250 W

Suggested PSU

450 W

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

Outputs

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

None

Power Connectors

2x 6-pin

Graphics Processor

GK106

GPU Name

GK104

GK106-200-A1

GPU Variant

GK104-325-A2

Kepler

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.54 billion

Transistors

3.54 billion

221 mm²

Die Size

294 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.1

3.0

CUDA

3.0

5.1

Shader Model

5.1

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