NVIDIA GeForce GTX 645 OEM vs NVIDIA GeForce 505 OEM

VS

NVIDIA GeForce GTX 645 OEM

NVIDIA GeForce 505 OEM

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM and 512MB VRAM GeForce 505 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 645 OEM 's Advantages

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (64.00GB/s vs 9.600GB/s)

560 additional rendering cores

NVIDIA GeForce 505 OEM 's Advantages

Lower TDP (25W vs 65W)

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM +2008%

0.949 TFLOPS

GeForce 505 OEM

0.045 TFLOPS

GeForce GTX 645 OEM

VS

GeForce 505 OEM

Graphics Card

Apr 2013

Release Date

Jan 2013

GeForce 600

Generation

GeForce 500

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

600 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

64bit

64.00GB/s

Bandwidth

9.600GB/s

Render Config

-

SM Count

2

576

Shading Units

16

48

TMUs

8

16

ROPs

4

-

16 KB (per SMX)

L1 Cache

-

256 KB

L2 Cache

32 KB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

2.356 GPixel/s

39.55 GTexel/s

Texture Rate

4.712 GTexel/s

-

949.2 GFLOPS

FP32 (float)

44.86 GFLOPS

39.55 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

25W

250 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1x VGA

None

Power Connectors

None

Graphics Processor

GK106

GPU Name

GT218

GK106-200-A1

GPU Variant

GT218-300-B1

Kepler

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.54 billion

Transistors

0.26 billion

221 mm²

Die Size

57 mm²

Graphics Features

12 (11_0)

DirectX

11.1 (10_1)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

1.2

5.1

Shader Model

4.1

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