NVIDIA GeForce GTX 555 OEM vs NVIDIA GeForce GTX 645 OEM

VS

NVIDIA GeForce GTX 555 OEM

NVIDIA GeForce GTX 645 OEM

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 555 OEM and 1024MB VRAM GeForce GTX 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 555 OEM 's Advantages

Larger VRAM bandwidth (91.87GB/s vs 64.00GB/s)

NVIDIA GeForce GTX 645 OEM 's Advantages

Released 1 years and 11 months late

288 additional rendering cores

Lower TDP (65W vs 150W)

Score

Benchmark

FP32 (float)

GeForce GTX 555 OEM

0.848 TFLOPS

GeForce GTX 645 OEM +11%

0.949 TFLOPS

GeForce GTX 555 OEM

VS

GeForce GTX 645 OEM

Graphics Card

May 2011

Release Date

Apr 2013

GeForce 500

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

957 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

128bit

91.87GB/s

Bandwidth

64.00GB/s

Render Config

-

6

SM Count

-

288

Shading Units

576

48

TMUs

48

24

ROPs

16

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

384 KB

L2 Cache

256 KB

-

Theoretical Performance

8.832 GPixel/s

Pixel Rate

9.888 GPixel/s

35.33 GTexel/s

Texture Rate

39.55 GTexel/s

-

847.9 GFLOPS

FP32 (float)

949.2 GFLOPS

70.66 GFLOPS

FP64 (double)

39.55 GFLOPS

Board Design

150W

TDP

65W

450 W

Suggested PSU

250 W

2x DVI 1x mini-HDMI 1.3a

Outputs

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

2x 6-pin

Power Connectors

None

Graphics Processor

GF114

GPU Name

GK106

GF114-200-KB-A1

GPU Variant

GK106-200-A1

Fermi 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.95 billion

Transistors

2.54 billion

332 mm²

Die Size

221 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

2.1

CUDA

3.0

5.1

Shader Model

5.1

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